Auxin is an important regulatory factor in the process of plant growth and development, and plants achieve their own growth and development through the regulation of auxin. As a member of the early auxin response gene family, the SAUR gene family is one of the indispensable regulatory factors in the auxin signal transduction pathway. In order to study the role of SAUR genes in biological processes such as plant growth and development and stress response, the bioinformatics characteristics, expression patterns, and regulatory mechanisms of the SAUR gene family were analyzed. The functions of SAUR genes in plant cell elongation growth, light-mediated cotyledon and apical hook opening, flower organ formation, fruit development, and stress response were summarized. It was pointed out that SAUR genes not only affected plant growth and development in multiple aspects, but also participated in the response of plants to abiotic stress. This study provides a theoretical basis for future research on the molecular mechanisms of SAUR genes and the cultivation of plant varieties.

产单核细胞李氏杆菌是一种常见的食源性致病菌，其致死率高达30%。该菌能够在高盐度、高酸度和冷藏温度等极端条件下存活和增殖，对人畜健康构成了重大威胁。然而抗生素的滥用导致药物残留和多重耐药性等问题的出现，从而使得李氏杆菌病的防治异常困难。噬菌体相关生物制剂的发展为解决以上问题提供了可行方案。本文综述了李氏杆菌噬菌体在食品保鲜、生物检测、基因工程等方面的应用，同时还探讨了噬菌体与宿主之间的互作机制，旨在为李氏杆菌噬菌体在食品污染防控中提供一定的理论依据。

Saline-alkali stress is one of the abiotic stresses in the process of plant growth and development, which can cause water deficit, changes in cell membrane permeability, metabolic disorders and blockage of protein synthesis in plants, resulting in crop yield reduction or death. Finding effective methods to reduce the harm of saline-alkali stress and strategies to improve the saline tolerance of plants are of great significance to the comprehensive utilization of saline land. In this paper, the latest researches on the damage and adaptive mechanism of plants under saline-alkali stress in recent years were summarized, and the physiological and molecular mechanisms of plants responding to saline-alkali stress were summed up. Furthermore, the physiological mechanisms of plants under saline-alkali stress were analyzed, which were mainly regulated by accumulating osmotic substances, increasing the activity of antioxidant enzymes and ionic compartmentalization, etc., and the molecular mechanisms were mainly regulated by signal transduction, transcription factor regulation and the expression of plant salt-tolerance-related gene, etc. This study pointed out the trends and urgent problems in the development of plant adaptation to saline-alkali environments, with a view to providing a certain theoretical basis for the selection and cultivation of saline and alkali tolerant plants.

The area of saline alkali land in China accounts for one tenth of the total area of saline alkali land in the world, which seriously restricts agricultural production. It is very important to repair and make good use of saline alkali land. At present, the methods of saline-alkali land remediation include chemical remediation, engineering remediation and bioremediation, among which bioremediation is an economical, efficient, green and sustainable method. Bioremediation improves the soil and environment of saline-alkali land through biological resources such as plants and microorganisms. Halophytes can grow and reproduce in saline-alkali soil and have the ability to repair high concentration saline-alkali soil, while common crops can enhance their salt tolerance through gene mining and variety cultivation to achieve the purpose of repairing saline-alkali soil. Microorganisms can also be used to improve crop salt tolerance or degrade salt and alkaline substances in saline-alkali soil. Bioremediation is a green and environmentally friendly method for the remediation of saline-alkali land, which is in line with the development strategy of sustainable agriculture and circular economy in China.

This study focuses on evaluating the application of anaerobic digestion technology in the treatment of organic waste, conversion into renewable energy and organic fertilizers, and exploring the mitigation effects of that on the environment. The effects of temperature, carbon to nitrogen ratio, organic loading rate, volatile fatty acids, hydraulic residence time and pH on the efficiency and stability of anaerobic digestion were analyzed by literature review. The results show that these parameters have significant effects on promoting microbial activity, accelerating organic decomposition and maintaining stable operation of the system. The effectiveness of anaerobic digestion technology is verified by the typical studies of organic wastes such as corn stalks, livestock manure and food waste, and the structure and function of key microbial communities in the process are elaborated, including the mechanisms of action of bacteria and archaea at different stages such as hydrolysis, acidification, acetogenesis and methanogenesis. In addition, the generation of toxic substances and its management strategies are also discussed. Finally, the findings of this study suggest that improving the efficiency of anaerobic digestion, developing new reactor technologies, and strengthening research on microbial population will help make anaerobic digestion technology more efficient, stable, and widely applied in the future.

【目的】试验旨在研究抗鸭甲肝病毒基因3型(Duck hepatitis A virus genotype 3,DHAV-3)的北京鸭专门化品系(即抗性品系Z7-R)与DHAV-3易感品系(Z7-S)的脂质代谢轮廓,并筛选品系间差异脂质标志物。【方法】选取2日龄Z7系DHAV-3抗性北京鸭和易感北京鸭各6只,采集血液与肝脏组织,进行血液生化指标测定与基于液相色谱-质谱联用技术(LC-MS)的非靶向肝脏脂质组检测。采用t检验、偏最小二乘分析(PLS-DA)和差异倍数(FC)综合筛选品系间显著差异脂质。【结果】Z7-R系北京鸭血浆总胆固醇、低密度脂蛋白和磷脂含量均显著高于Z7-S系(P<0.05)。脂质组分析共鉴定到1 532个脂质代谢物,涵盖了脂肪酰(FA)、甘油酯(GL)、甘油磷脂(GP)、鞘脂(SP)、固醇脂(ST)5个大类。共筛选到84个显著差异脂质,其中甘油酯类主要为甘油三酯(TG),且Z7-R系含量均高于Z7-S系(P<0.05);甘油磷脂类主要为溶血磷脂酰胆碱(LPC)、溶血磷脂酰乙醇胺(LPE)和游离脂肪酸(FFAs),且Z7-R系含量均低于Z7-S系(P<0.05)。共筛选到10个显著差异的脂质显著富集到鞘脂代谢、甘油磷脂代谢、甘油酯代谢、亚油酸代谢和α-亚麻酸代谢通路中。【结论】脂质组学技术可用于区分北京鸭Z7-R系与Z7-S系,筛选到的10个显著差异脂质物质可作为潜在的DHAV-3抗性与易感性状相关生物标志物。

Digital soil mapping is a novel and efficient soil mapping technique that utilizes 3S technology and is theoretically based on soil formation science, geography and mathematics. Domestic and foreign scholars had conducted extensive research on the generation of environmental collaborative variables, the acquisition of sample data, the selection of digital soil mapping models or methods, and the generation and validation of soil maps, especially on mapping methods. This paper introduced five categories of digital soil mapping techniques, including geostatistical methods, deterministic interpolation, mathematical statistics, machine learning, and expert knowledge models. At the same time, the mapping method suitable for the study area was chosen based on the merits of various approaches, from the aspects of target variables, topography and geomorphological features, sample density and distribution status and more. The future development direction of digital soil mapping included incorporating human activity factors into environmental synergistic variables; establishing more effective sampling methods based on machine learning and data mining; the application of new modeling methods (deep learning and multimodal methods).

随着测序技术的发展，大量组学测序技术不断涌现并得以推广，产生了包括基因组、表观基因组、转录组、蛋白质组、代谢组、微生物组等大量的组学数据。这些数据对深入研究和揭示畜禽重要经济性状(生长性状、繁殖性状、肉质性状、抗病性状等)的复杂调控过程具有重要意义。仅通过单一层面的组学无法揭示畜禽重要经济性状的复杂性，而多组学技术可以系统解析畜禽重要经济性状的机理和表型，并逐渐成为研究畜禽重要经济性状的主要方法。本文综述了多组学技术的方法、优点及其在畜禽重要经济性状研究中的应用，旨在对畜禽重要经济性状的研究提供参考和思路。

Polyethylene (PE), as one of the most used plastics in the world, has widely existed in the natural environment because of its wear-resistant, high molecular weight and indestructible properties. PE would break down into microplastics (MPs) and accumulate in large quantities, and currently MPs has become an important pollutant that affects the ecosystem. Currently, many studies have been demonstrated that PE could be partially degraded, but further research is needed in screening of microorganisms or enzymes that could completely degrade PE and construct a complete biodegradation pathway for PE. Therefore, this paper summarizes the classification, recycle methods and characterization methods of PE, microorganisms and enzymes that degrade PE, biodegradation pathways and influencing factors, and proposes future research directions of PE biodegradation. These findings provide theoretical basis for the degradation mechanism of PE.

To enhance the efficient application of water-soluble fertilizers containing amino-acids in agricultural production, and to promote green, high-quality development of agriculture. The study reviewed the source and production technology of amino-acids raw material, the functional characteristics, the development status, the application in agricultural production and the future development trend of water-soluble fertilizers containing amino-acids. The results showed that water-soluble fertilizers containing amino-acids were widely used in food crops, vegetable crops, fruit crops and cash crops, had positive effects on crop growth, formation of fruit quality and soil improvement. However, the application of fertilizer on different crops needed to be further explored according to the growth and development rules and nutritional requirements of the plant. The water-soluble fertilizers containing single amino-acids cannot satisfy the market demand, it is necessary to develop new types of fertilizers combining function and nutrition of amino acids.

遗传评估软件在动物领域的应用极大地提高了育种工作效率。随着基因组测序技术不断完善和人工智能技术的兴起，动物遗传评估软件也得到了快速的发展。本文首先介绍了常规育种和基因组育种在动物育种领域的应用，然后重点回顾了GBLUP方法、贝叶斯方法和机器学习以及深度学习方法的全基因组遗传评估软件的特点和发展历史，最后展望了计算机软件在动物遗传评估育种中的未来发展趋势，旨为动物育种领域的研究人员提供相关遗传评估软件的参考。

The genus Polygonatum Mill, commonly referred to as "Huang Jing," are plants renowned for their medicinal and edible properties. Their active constituents, including polysaccharides, flavonoids, and saponins, exhibit notable pharmacological effects. Recent studies have predominantly centered on the extraction of saponin components from the genus Polygonatum, which are attributed with anti-fatigue, antioxidant, hypoglycemic, lipid-lowering, and immune-enhancing properties. While there has been some advancement in the structural analysis of the genus Polygonatum saponins, their biosynthetic pathways remain underexplored. The synthesis of saponins in the genus Polygonatum occurs via the mevalonic acid pathway and the 2-C-methyl-D-erythritol-4-phosphate pathway, encompassing multiple enzymatic steps. This research indicates that the genus Polygonatum saponins exert diverse biological effects, including anti-tumor, antibacterial, anti-inflammatory, antiviral, and immune regulatory activities, and hold significant potential in medicine, food, cosmetics, and other sectors. Nonetheless, current studies are limited by inadequate structural analysis, an incomplete understanding of biosynthetic pathways, and ambiguous mechanisms of pharmacological action. Future endeavors should prioritize the isolation, structural analysis, synthetic biology, and pharmacology of the genus Polygonatum saponins to advance their scientific investigation and product development, thereby laying a foundation for the creation of novel therapeutic agents.

【Objective】 Mining the key drought-resistant genes of maize, revealing its drought-resistant molecular mechanism, and providing genetic resources and theoretical guidance for the cultivation of new drought-resistant maize varieties.【Method】Transcriptome data combined with weighted gene co-expression network (WGCNA) and screening methods for physiological and biochemical indicators of drought resistance were used to identify ZmPAL genes associated with drought resistance and rewatering. Genome-wide analysis of the genes encoding PAL was performed using bioinformatics methods. Quantitative real-time fluorescence PCR (qRT-PCR) was used to detect the expression of ZmPAL genes under drought treatment conditions, as well as the expression characteristics of ZmPAL5 among different inbred lines and the expression patterns in different tissues. Finally, genetic transformation was used to analyze the drought resistance function of ZmPAL5 in maize, and the deletion-type Arabidopsis mutant was analyzed for drought resistance with the help of CRISPR/Cas9 technology for the PAL5 homologous gene.【Result】Nineteen maize ZmPAL genes were identified, six of which were clustered on chromosome 5 and encoded proteins that were mostly hydrophilic acidic proteins and relatively evolutionarily conserved in the PAL family of genes. The promoter region of ZmPAL genes contained a large number of cis-acting elements associated with hormonal and abiotic stress responses. Six core genes were identified, four of which were significantly up-regulated for expression after drought treatment. In particular, ZmPAL5 showed an 8.57-fold increase in expression after drought stress. The expression level of ZmPAL5 was found to be significantly higher in the drought-resistant inbred line Zheng 8713 than in the drought-sensitive inbred line B73 under both drought stress and rewatering treatments. Meanwhile, ZmPAL5, a constitutively expressed gene, showed a high level of expression in young stems. Overexpressed ZmPAL5 maize grew well under drought stress, and its relative water content, lignin, chlorophyll, soluble protein, proline content, and activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase were 1.52, 1.49, 1.47, 1.43, 1.44, 1.41, 1.53, 1.41, and 1.35 times, but the malondialdehyde content was 0.65 times that of the wild type. The PAL5-deficient Arabidopsis mutant was sensitive to drought. Under drought stress, its physiological and biochemical indexes showed the opposite trend to those of overexpression of ZmPAL5 maize. 【Conclusion】 Six core genes (ZmPAL3, ZmPAL5, ZmPAL6, ZmPAL8, ZmPAL11, and ZmPAL13) were screened in response to drought stress, in which the expression of ZmPAL5 was positively correlated with drought resistance. ZmPAL5 positively regulated the drought resistance and resilience of the plant by influencing the content of osmotically regulated substances and antioxidant enzyme activities.

In order to explore the effective way to realize the protection of livestock and poultry genetic resources in China, the current situation of the protection of livestock and poultry genetic resources was systematically sorted out, and the realistic difficulties faced by the protection were deeply analyzed. The results show that, at present, the number of protected varieties has been increasing, regulations and policies have been improved, protected areas, seed conservation farms and gene banks have begun to take shape, and the quality of the workforce has been improved. However, it is also faced with the dilemma of not digging deep into the characteristics of resources, and the disconnection between protection and exploitation; the weak support of regulations and policies, and the lack of linkage in the management system; the obsolete facilities in the protected areas, conservation farms and gene banks, and the outdated protection technology; the insufficient financial support, and the single channel of investment. Based on this, the following countermeasures and suggestions are put forward: strengthen the depth mining of resources, improve the level of development and utilization; establish and improve laws and regulations, integrate departmental management resources; strengthen the guidance of fiscal funds and establish a diversified investment and financing system; continue to promote the development and construction of seed conservation farms, protected areas and gene banks.

Chitosan is a natural, safe, and cheap product of chitin deacetylation, which is widely used in industry production due to its own features. In this paper, the function and application of chitosan and its nanoparticles in seed treatment, soil remediation and increasing efficiency of fertilizer and pesticide synergy were reviewed. Chitosan can be used for seed treatment and soil amendment, promoting plant growth and inducing plant tolerance to abiotic and biological stresses. In recent years, chitosan has also been used to synthesize chitosan nanoparticles, as carriers of fertilizers, pesticides, fungicides and microelements, in order to achieve the purpose of reducing stockpiles and increasing efficiency, and promote the sustainable development of agriculture. Finally, future research directions of chitosan and its nanoparticles in agriculture were prospected.

In order to effectively control Huanglongbing (HLB) and reduce the loss of HLB to the global citrus industry, this study reviewed the latest research on the control of HLB in recent years. The results showed that there were no effective agents and disease-resistant varieties. At present, the main methods of controlling HLB include traditional ‘three fast methods’, namely planting disease-free seedlings to control HLB from the sources, preventing and controlling Diaphorina citr to block its transmission path, and digging infected trees to eliminate the infection source; expanded physical control technologies include seedling virus-free, light, steam heat treatment, etc.; multi-directional chemical drug control technologies include antibiotics, nanomaterials, immune inducers and antimicrobial peptides; emerging biological control technologies include various probiotics, microbial preparations, etc. Finally, the application prospect of soil amendment and biological control agent combined treatment of HLB and citrus transgenic disease resistance technology based on genetic improvement was prospected, to provide theoretical basis and practical reference for effective control of HLB.

In recent years, the betel nut planting industry in Hainan Province has developed rapidly. Industrial adjustment and optimization will be the focus of its future development, and a reasonable production area layout is crucial for the sustainable development of the betel nut industry in Hainan. Using regional comparative advantage index and resource endowment coefficient, this study analyzed the spatial-temporal evolution characteristics and driving factors of betel nut production in various cities and counties in Hainan from 2005 to 2022. The results showed that the scale of betel nut cultivation in Hainan had significantly increased, but the yield had significantly decreased. The calculated results of the comprehensive comparative advantage index and resource endowment coefficient showed strong consistency. The central regions of Qiongzhong, Ding'an, Baoting, and Tunchang had stronger comparative advantages in betel nut production, which were key areas for the production layout in Hainan. The leading advantage of traditional planting areas in the east was gradually weakening, while the overall western region lacked comparative advantages but showed a clear upward trend. The production of betel nuts in Hainan presents a pattern of retreating in the east, advancing in the west, and maintaining dominance in the center. The driving factors of spatial-temporal evolution mainly include higher economic benefits, the diffusion of high-yield cultivation and management techniques, and the spread of diseases and pests such as yellowing disease. It is recommended to reasonably adjust the layout of betel nut production, moderately control of planting scale, strengthen socialized services, clarify the regulatory policies for edible betel nut products, and accelerate the transformation and upgrading of the betel nut industry.

Modern breeding techniques based on biotechnology have a great impact on crop genetic improvement. CRISPR/Cas gene editing system’s components, mechanisms, breakthrough progresses of gene editing technology in the gene functional verification and crop genetic improvement, current utilization in various vegetable crops such as tomato, watermelon, cabbage, carrot, cucumber, and others, were summarized in this review. The CRISPR/Cas gene editing system stands out as the most extensively utilized gene-editing tool. This review aims to enhance comprehension of the CRISPR/Cas gene editing system and promote its vital role in vegetable crop improvement. This review discusses the factors affecting genetic transformation efficiency, methods to improve genetic transformation efficiency, the defects of the CRISPR gene editing system and the constraints in its current utilization in vegetable crops, including challenges related to the transformation and regeneration processes, and the genotype dependent for certain crops. In conclusion, this review suggests that future research should focus on extensive genotype screening to facilitate easier genetic transformation, the advancement of efficient crop transformation and regeneration systems, and the development of more efficient, innovative, precise, and multi-functional gene editing tools.

An important goal of soil management in the Songnen Plain is improvement of soda saline-alkali soil. Summing up the previous research results on soil improvement, this article summarized the application types, action mechanisms, improvement effects, existing problems of improvers in soil improvement, and looked forward to the application prospects of improvers, in order to provide reference for future in-depth research. The results showed that improvers could be divided into inorganic improvers, organic improvers, and microbial agents. The use of combined improvers was better than that of single improver. The application of improvers improved soil physical and chemical properties, structure, nutrient content, and micro ecological environment, and promote plant growth. The research and development of new organic improvers were the focus of future research.

In order to elucidate the response of crop nitrogen absorption and utilization to salt and alkali stress and the regulation mechanisms, based on domestically and internationally research progress, this article summed the effect of salt and alkali stress on crop growth from the aspects of seed germination, seedling growth, root growth, photosynthesis, osmotic regulation system, redox system, and ion balance; discussed the impact of salt and alkali stress on crop nitrogen absorption and utilization and the undying mechanisms from the aspects of soil nitrogen cycling, root nitrogen absorption, and nitrogen assimilation; summarized the regulatory methods on crop nitrogen uptake and utilization under salt alkali stress such as nitrogen efficient variety selection, soil conditioner application, organic matter application, growth regulator application, and endophytic mycorrhizal colonization, and discussed the undying mechanisms. This article pointed out that soil salinization was one of the key soil barrier factors limiting crop production. Increasing nitrogen fertilizer application was an effective way to alleviate salt stress, but improper nitrogen fertilizer application could lead to a decrease in nitrogen utilization efficiency. Further in-depth research on crop nitrogen response mechanisms and regulatory pathways under salt stress from the soil-crop system could be of great significance for crop nutrient management and stable and high crops yield under soil salinization.

Vermicomposting is a simple, feasible, low-cost and environmentally friendly bio-microbial coupled organic waste recycling technology. The physicochemical and microbial characteristics of vermicomposting in the treatment of organic waste were summarized. The application research progress of vermicomposting in agricultural production was introduced, and the following suggestions were proposed in view of the problems existing in the practical application of vermicomposting. (1) In order to develop and produce high quality commercial earthworm manure, it is suggested to use the relevant factors affecting the quality of earthworm compost products to carry out mathematical modeling of vermicomposting, so as to efficiently optimize the parameters of vermicomposting, reduce research and development costs and improve production efficiency for large-scale production of earthworm manure; (2) in order to ensure the stable output of high quality earthworm manure, equipment with intelligent control of pH, carbon to nitrogen ratio, temperature and humidity and light should be developed to form automatic and large-scale vermiculture; (3) in order to promote the development of the circular economy of "planting and breeding integration", the effective parts containing humic acid in the process of culturing earthworms can be reused, and the efficiency of vermicompost utilization in agricultural planting and soil remediation should be strengthened.

Leaves are the main places for photosynthesis and organic synthesis of cotton.  Leaf shape has important effects on the photosynthetic efficiency and canopy formation, thereby affecting cotton yield.  Previous studies have shown that LMI1 is the main gene regulating leaf shape. In this study, the LMI1 gene (LATE MERISTEM IDENTITY1) was inserted into the 35S promoter expression vector, and cotton plants overexpressing LMI1(OE) were obtained through genetical transformation.  Statistical analysis of the biological traits of T₁ and T₂ populations showed that compared to wild type (WT), OE plants had significant larger leaves, thicker stems and significantly increased dry weight.  Furthermore, plant sections of the main vein and petiole showed that the number of cell in those tissues of OE plants increased significantly.  In addition, RNA-seq analysis revealed differential expression of genes related to gibberellin synthesis and NAC gene family (genes containing the NAC domain) in OE and WT plants, suggesting that LMI1 is involved in secondary wall formation and cell proliferation, and promotes stem thickening.  Moreover, GO (Gene Ontology) analysis enriched the terms of calcium ion binding, and KEGG (Kyoto Encyclopedia of Genes and Genomes) analysis enriched the terms of fatty acid degradation, phosphatidylinositol signal transduction system, and cAMP signal pathway.  These results suggested that LMI1 OE plants were responsive to gibberellin hormone signals, and altered messenger signal (cAMP, Ca²⁺) which amplified this function, to promote the stronger above ground vegetative growth.  This study found the LMI1 soared the nutrient growth in cotton, which is the basic for higher yield.

面源污染已成为影响流域水环境和水安全的重要来源，是当前国内外学者关注的热点之一，同时也是最具挑战性的研究领域之一。科学高效地治理面源污染问题已经纳入国家战略计划。因此，在新形势和政策背景下如何推进面源污染研究工作，以保障流域水环境可持续发展已成为紧迫任务。本文较为全面地回顾和总结了我国面源污染研究现状，归纳了主要研究方法和典型治理措施，并基于研究中存在的主要问题，结合我国水污染治理现状给出相应建议，指出未来发展趋势。本文可为面源污染的全过程监管、评估及治理提供重要参考，有助于完善我国水污染治理体系。

猪萨佩罗病毒(Porcine sapelovirus,PSV)属于小RNA病毒科萨佩罗病毒属,是一种无包膜单股正链RNA病毒。与其他猪肠道病毒相似,PSV主要通过粪-口途径传播,也可通过接触和气溶胶传播。仔猪对该病毒易感,其可引起仔猪神经系统、呼吸系统、消化系统等的功能紊乱,严重时可导致猪死亡,不同毒株之间毒力与组织嗜性存在差异。临床中PSV常与猪捷申病毒、猪流行性腹泻病毒、猪库布病毒等多种病毒混合感染,使其临床症状复杂、诊断难度增加,从而加快病毒传播速度。此外,PSV存在的基因重组现象及跨种传播风险,对养猪业造成潜在威胁。目前已有核酸水平、蛋白水平、血清学等多种检测方法可用于PSV的实验室检测,已有多种细胞系可建立其体外感染模型,用于该病毒的相关研究。截至目前,PSV的研究主要集中于流行病学研究及其分离鉴定,有关PSV感染和致病机制研究较少且无商品化疫苗和有效的抗病毒药物。笔者对PSV的病原学特征、流行病学、致病机制、临床防控等方面的研究进展进行综述,以期为PSV的进一步防控研究提供理论依据。

In the context of "dual carbon" goal, the scientific construction of evaluation methods and index systems for low-carbon villages in China has important pioneering significance for rural development and planning, and can also provide important support and basis for evaluating and quantifying rural low-carbon levels. Based on the rural energy construction and low-carbon/zero-carbon energy technology, further integrate the concepts of rural revitalization strategy, ecological civilization construction, rural living environment improvement and beautiful rural construction, scientifically set the evaluation object and scope, so as to build a low-carbon village index system. The weight of each index in the evaluation index system was determined by the analytic hierarchy method (AHP), the score was assigned, and the rationality of the low-carbon village evaluation system was verified using the Cronbach alpha coefficient method. Focusing on low-carbon energy use, energy saving, domestic waste treatment and resource utilization, and low-carbon village management in rural life, a total of 15 indicators of 4 standard layers are set up, highlighting the construction level of low-carbon technology application and energy efficiency improvement in village construction, fully considering China's regional differences, combining relevant national policies, standards, norms, etc., setting index data quantification and calculation evaluation benchmark values, and improving and establishing a low-carbon village evaluation system at multiple scales and dimensions. Through the reliability test of the Cronbach alpha coefficient, the reliability of the first-level indicators of China's low-carbon village index system was 0.850, 0.828, 0.833 and 0.805, respectively, and the reliability test results exceeded 0.80, indicating that the evaluation method and index system of China's low-carbon villages were reasonable and feasible.

【Objective】 In order to provide theoretical basis for molecular breeding of soybean drought resistance, the different evaluation indexes of drought resistance were comprehensively used to screen soybean germplasm with drought-resistance, and the candidate drought-tolerant genes were identified. 【Method】 In 2018, 2019, 2020 and 2021, a total of 188 soybean germplasm were used to determine pod number per plant, biomass per plant and yield per plant under well-watered and drought stressed conditions. Drought resistance index (DI), improved drought resistance index (IDI), weighted drought resistance coefficient (WDC) and weighted drought resistance index (WDI) were used to identify drought resistance of soybean germplasm. The single nucleotide polymorphisms (SNP) loci significantly associated with these parameters were detected by genome-wide association study (GWAS), and the candidate genes for drought resistance were screened by RNA-seq and qRT-PCR analysis of soybean seedling leaves under drought stress. 【Result】 The DI, IDI, WDC and WDI of 188 soybean germplasm varied widely, and five classification criteria for each drought resistance parameter were determined by hierarchical classification method. Among them, Liaodou 15, Liaodou 69, Liaodou 14, Jinzhangzi Huangdou, Zhonghuang 606, Kexin 3 and Koreane 4 were identified as first-grade drought resistant by all evaluation methods. By using GWAS for DI, IDI, WDC and WDI, a total of 15 significantly SNP loci were detected under multiple environments, and the contribution rate of these loci to phenotypic variation ranged from 12.46% to 25.60%. There are 226 annotated genes within 200 kb intervals of upstream and downstream for the significant SNP loci. According to RNA-seq and qRT-PCR analysis of drought-resistant cultivar Liaodou 14 and drought-sensitive cultivar Liaodou 21 under drought stress, a total of 32 annotated genes were significantly differentially expressed by drought stress. Among them, eight genes including Glyma.02G182900, Glyma.04G012400, Glyma.06G258900, Glyma.15G100900, Glyma.01G172600, Glyma.04G012300, Glyma.01G172200 and Glyma.04G010300, encodes calcium-dependent protein kinase, universal stress protein A-like protein, G-type lectin S-receptor-like serine/threonine-protein kinase, protein phosphatase 2C, isoflavone reductase, isoflavone reductase homolog, auxin-like protein, and bZIP transcription factor, respectively. 【Conclusion】 Seven germplasm were identified from 188 soybean germplasm by comprehensive application of different drought tolerance parameters. A total of 15 SNP loci significantly associated with drought tolerance parameters were identified by GWAS, and eight candidate genes were identified.

Embryo transfer technology is a modern reproductive technology that can accelerate the expansion and reproduction rate of domestic animal populations. It has been widely applied in the promotion and rapid expansion of excellent animal breeds such as cattle, sheep, and horses. This article reviews the superovulation technology, synchronous estrus technology and factors affecting embryo transfer involved in sheep embryo transfer, so as to provide ideas for the improvement of sheep embryo transfer technology and its application in the sheep industry, and lay a foundation for subsequent technological progress.

In this paper, the research status and development trend of rice quality at home and abroad were reviewed, the genetic basis of rice quality formation, regulatory molecular mechanisms and strategies for optimizing rice quality were summarized, and the correlation between rice quality and related genes such as starch, protein, lipid, aroma and color was revealed. Two specific countermeasures to improve rice quality, gene editing technology and molecular marker-assisted technology, were described. The challenges in rice quality research, such as imbalance between rice quality and yield, difficulty in transforming and popularizing rice quality improvement technology, regional adaptability of rice in breeding process, high breeding cost and long breeding cycle, and consumer acceptance of improved rice, were pointed out. Countermeasures were put forward from the aspects of multi-party cooperation and resource sharing, strengthening basic research and innovative technology, efficient screening and evaluation methods, considering diversified needs, and promoting the integration of industry-university-research and technology transformation, so as to provide theoretical guidance for optimizing rice quality and cultivating high-quality rice varieties.

The herbicide glyphosate is widely used in agriculture because of its high efficiency and low cost, but it also poses certain harm. This paper provided a brief introduction to glyphosate toxicity and mechanism. It was clarified that the harm of glyphosate to water environment was mainly in the aspects of affecting water quality, aquatic organisms and ecosystems. The harm to soil was mainly reflected in the destruction of soil microbial ecology, the destruction of soil microbial community structure and function, and the influence of soil enzyme activity. The research progress of bioremediation of glyphosate-contaminated soil was introduced. The bioremediation of glyphosate-contaminated soil was mainly microbial degradation methods. Compared with non-biodegradation such as adsorption and photolysis, microbial degradation was more environmentally friendly, efficient and promising. Finally, the microbial degradation methods of glyphosate contaminated soil remediation were prospected, in order to provide reference for the application and improvement of glyphosate microbial degradation technology in glyphosate contaminated soil.

The global warming rate and the frequency of extreme high temperature weather are continuously increasing, which could bring catastrophic impacts to rice production. To further clarify the response mechanism of rice to high temperature, this article summarized the research progress in the direction of rice heat damage from high temperature, focused on the impact of high temperature on rice production, and deeply analyzed the physiological (photosynthetic characteristics/antioxidant system) and gene molecular mechanisms of rice’s response to high temperature. We concluded that the heat tolerance characteristics of rice were formed by the interaction between varieties and the environment. Results showed that, the photosynthetic characteristics of rice were influenced by both stomatal and non-stomatal limiting factors, and the antioxidant process was achieved by enhancing the activity of antioxidant enzymes and reducing the content of malondialdehyde; rice improved plant heat adaptability by activating the expression of key genes and stimulating the transduction of heat signals within the plant; by optimizing “Before production-During production-After production” comprehensive management and monitoring system, we could explore innovative cultivation systems, and thoroughly investigate the high temperature defense mechanisms of rice. Therefore, this study aimed to clarify the physiological and molecular mechanisms of rice in response to high temperature stress, providing a scientific reference for future heat-tolerant rice breeding work and improving rice sustainable production.

This study aims to screen one or two kinds of herbicides which are suitable for the control of X. sibiricum in Ningxia region. The plant control effects and fresh weight control effects of 5 herbicides, including 2 methyl 4 chlorodimethylamine salt, fluroxypyr, saflufenacil·glyphosate, nitrosulone, topramezone on X. sibiricum, were determined by field experiments. After 21 days, the results of plant control effects showed that among the five herbicides, 2 methyl 4 chlorodimethylamine salt 60% AS with 750 mL/hm², fluroxypyr 200 g/L EC with 900 mL/hm², and saflufenacil·glyphosate 40% OD with 1500 mL/hm² presented excellent plant control effect, and the control effects were 96.62%, 98.31%, and 100%, respectively; the results of fresh weight control effects showed that fluroxypyr 200 g/L EC with 900 mL/hm² and saflufenacil·glyphosate 40% OD with 1500 mL/hm² had remarkable control effects, which were 93.94% and 100%, respectively. Based on the results of control effects, as well as the different crops, the biocidal herbicide saflufenacil·glyphosate can be selected for the control of X. sibiricum in wasteland, forest land, ditches, etc. In the control of X. sibiricum in gramineous crop fields such as wheat and corn, fluroxypyr herbicides were the first choice.

为探讨滹沱河流域山区段当前及未来不同发展情景下生态承载力的时空变化，应用植被净初级生产力改进的生态足迹模型测算分析了流域2015—2020年生态承载力的时空格局变化，并借助经过精度验证的PLUS模型对2030年区域自然发展、经济发展及生态保护三种发展情景下的生态承载力时空格局进行预测。结果表明：2015—2030年滹沱河流域山区段单位面积生态承载力整体格局变化不大，但内部空间分异明显，整体呈东南及西北区域单位面积生态承载力高，而东北、西南部区域单位面积生态承载力低的特点。2015—2020年区域生态承载力总量由1.078 0×10~6bhm~2增加到1.079 6×10~6bhm~2，呈上升趋势；2030年自然发展和经济发展情景下区域生态承载力总量分别为1.078 3×10~6、1.078 2×10~6bhm~2，与2020年相比呈下降趋势，草地向耕地的转移、林地向建设用地的转移是生态承载力下降的主要原因；2030年生态保护情景下生态承载力总量为1.080 2×10~6bhm~2，与2020年相比呈上升趋势，耕地向林地、草地转移是区域生态承载力增加的主要原因。各类用地的生态承载力总量由高到低依次为草地>耕地>林地>建设用地>水域，生态保护情景有益于林地、草地生态承载力总量的增加，经济发展情景有益于耕地和建设用地生态承载力总量的增加，水域生态承载力总量在各种发展情景下变化较小。生态保护情景更有利于未来生态承载力的增加，符合区域未来发展方向。严格控制草地向耕地的转变以及林地向建设用地的转变，继续实施退耕还林、还草生态工程，加强区域废弃矿山生态复垦的力度，将会提高区域未来生态承载力，实现区域生态安全及经济、社会、生态的可持续发展。

Citrus is the largest category of fruit in China, which is widely planted and has many cultivars for fresh fruit market. To extend shelf life, promote intensive processing, improve enterprise’s benefit, current research progresses related to fruit storage and processing have been reviewed. At first, new preservation technologies applied in Citrus fruits’ storage were summarized. Subsequently, innovation technologies for processing products and by-products utilization were discussed. Finally, functional components in Citrus with potential application in pharmaceutical industry were also reviewed. Therefore, depending on different cultivars in production areas, fruit sorting system after post-harvest are recommended for orange and lemon varieties. Meanwhile, the non-thermal processing technology and enzymatic digestion for de-peeling is utilized for tradition processing products, such as sweet orange and tangerine. Functional components in Citrus will be extracted and prepared to medicinal and edible food. In conclusion, new technology for storage and processing are used in Citrus to extendindustry chain, which significantly boost industry development in future.

China faces significant challenges of large population and limited arable land resources. In recent years, extreme weather events and ongoing soil degradation have significantly influenced China's agricultural production. With advances in agricultural science and technology, incorporating new materials into agricultural practices has been proven to be an effective strategy for adapting to these developments and environmental shifts. Seaweed extract, specifically seaweed oligosaccharides, are natural active substances derived from seaweed using modern technology. They are employed in agriculture as inducers for plant stress and disease resistance, biostimulants, and fertilizer enhancers. With continuous research progresses on the potential applications of seaweed oligosaccharides in agriculture, significant advancements have been achieved in their study and use. To further systematically understand and apply seaweed oligosaccharides, this paper discussed their sources, classification, and production methods. It summarized their impact on bolstering crop stress and disease resistance, fostering growth and development, and improving nutrient absorption, as well as their effectiveness and mechanisms across various crops. This provided innovative approaches and tools for the sustainable and efficient development of Chinese agriculture in the current context.

【Objective】Based on the current “dual carbon” strategic goal, this study aimed to clarify the current characteristics, spatio-temporal pattern and influencing factors of agricultural net carbon sink, so as to provide the important support for accelerating agricultural sink increase and emission reduction.【Method】Based on the scientific reconstruction of the index system, the carbon sink/carbon emission factor method was used to measure and analyze the current situation of China’s agricultural net carbon sink. Then the spatial autocorrelation model was used to discuss the spatial dependence and spatial heterogeneity. Finally, the least-squares method was used to analyze the main factors affecting the change of its intensity. 【Result】From 2005 to 2022, the total amount of agricultural net carbon sink in China was in an obvious upward trend, although there were some interannual fluctuations, and its evolutionary characteristics could be roughly divided into four stages, namely, “continuous rise”, “fluctuating decline”, “rapid rise”, and “slow rise”; the intensity of agricultural net carbon sink was also in an obvious upward trend, with only a slight difference in the trajectory of the evolution, and the difference in its growth rate could be roughly categorized into four stages: “continuous rapid growth”, “slow growth”, “fluctuating ups and downs”, and “slow growth”. 2022, the amount of agricultural net carbon sink had a large interprovincial difference, with Inner Mongolia being the first and Shanghai being the last, and compared with the year of 2005, all the provinces had a significant increase. In 2022, the net carbon sink intensity of agriculture would be the highest in Henan and the lowest in Qinghai, with all provinces showing different degrees of increase compared with 2005. China’s provincial agricultural net carbon sink intensity as a whole showed obvious spatial dependence, but there was also a local spatial clustering phenomenon, more than 70% of the provinces showed obvious spatial clustering characteristics, and the number of provinces located in the high-high clustering and the low-low clustering was approaching. The structure of arable land use, urbanization level, rural residents' income level and the internal industrial structure of agriculture all had a significant impact on the intensity of agricultural net carbon sink; specifically, the higher the ratio of sown area of grain crops, or the higher the urbanization rate, or the higher the income level of rural residents, or the larger the ratio of plantation industry to animal husbandry, the higher the intensity of net carbon sink in agriculture.【Conclusion】The total amount and intensity of China’s agricultural net carbon sink were in a fluctuating upward trend and there were obvious inter-provincial differences. The intensity of China’s agricultural net carbon sink showed obvious spatial dependence and spatial heterogeneity. The intensity of the agricultural net carbon sink was affected by the structure of arable land use, the level of urbanization, the level of rural residents' income, and the structure of the internal industries of agriculture. The measures should be taken to promote the enhancement of sink and emission reductions and to promote the enhancement of agricultural net carbon sink in agriculture, such as establishing a sound policy support system for the development of low-carbon agriculture, strengthening inter-provincial exchanges and cooperation, and increasing financial support for agriculture.

Hyperspectral remote sensing is an important technology for crop research. In order to promote the healthy development and basic research of crop growth cycle, improve the application level of remote sensing technology in crop research, this paper summarizes the analysis algorithms of hyperspectral in crop research, focus on the research progress of hyperspectral in crop growth, crop information monitoring, and crop information extraction. This paper systematically reviews the studies on leaf area index, biomass estimation, nitrogen monitoring, chlorophyll monitoring, pest and disease monitoring, heavy metal monitoring, crop carbon to nitrogen ratio, and water content, which still need to be further developed. Analysis shows that the combination of hyperspectral technology and artificial intelligence has achieved initial results in crop research which is still difficult to meet the intelligent needs of modern agriculture. If the new generation of information technology and large models are used to empower, enormous research potential will be unleashed.

[Purpose/Significance] As the cultural treasure of the Chinese nation, cultural heritage plays an important role in highlighting China's cultural background and strengthening national identity. In the process of globalization and digitization, the protection and inheritance of cultural heritage is facing new opportunities and challenges. How to effectively promote the protection and inheritance of cultural heritage and enhance the international influence of Chinese culture is an issue to be considered in the process of building a cultural power. [Method/Process] This paper takes the Chinese tea culture videos on YouTube platform as the research object, constructs the theoretical framework of "Cognitive-Affective-Conative", analyzes users' cognition of Chinese tea culture through LDA topic clustering of video comments, and further explores users' emotional responses. Then, based on the "5W" model, an international communication power measurement model is constructed from three aspects: communication subject, communication audience, and communication content to verify the interaction mechanism among conation, affect and conation. The communication subject factors include influence and credibility. The communication audience factors combine user cognitive themes and user emotions to form user cognitive agreement. The communication content factors are analyzed in terms of video theme, duration, subtitles, and background music. [Results/Conclusions] The video theme of tea sets, the video duration of 4-20 minutes, and the credibility and influence of the communication subject significantly enhance the international communication effect of tea culture videos. While background music and users' cognitive agreement of the tea ceremony negatively affected the communication effect. From the current practice, it can be seen that the application of AI technology in the dissemination of tea culture cannot greatly improve the dissemination effect of videos, which may have much to do with the political nature of video accounts. Based on the above conclusions, this paper further puts forward relevant suggestions for digital intelligence technology to strengthen the protection and inheritance of cultural heritage. The empowerment of digital information technology in the process of cultural heritage protection and inheritance mainly plays a role in the digital storage, data management, digital presentation, and popular dissemination of cultural heritage resources. Looking to the future, with advances in science and technology, new technologies will not only help protect and inherit cultural heritage, but also promote the creative transformation and innovative development of cultural heritage, and maintain its vitality and value.

To explore the growth differences among different green manure varieties and their effects on rice yield, nutrient accumulation and soil properties after turning over, the winter fallow field (CK) was used as the control, three common green manures (Astragalus sinicus L., Vicia villosa var. and Vicia sativa L.) were selected to conduct field experiments to analyze the differences in the characteristics of green manures during the growth period and their effects on rice yield, nutrient accumulation and soil properties after turning over. The results showed that the performance of plant height and biomass in the three types of green manure was as followed: Vicia villosa var. > Vicia sativa L. > Astragalus sinicus L., with Vicia villosa var. being the best and suitable for planting in the region. After turning over green manures, the rice yield significantly increased compared to CK, with the yield under Vicia villosa var. reached 10.47 t/hm², which was 58.88% higher than that of CK. Green manure turning over could improve the taste value and nutrient accumulation of rice. Compared with CK, the taste value of rice treated with Astragalus sinicus L., Vicia villosa var. and Vicia sativa L. increased by 5.58%, 9.46% and 11.16%, respectively, and total potassium accumulation in rice straw increased by 50.88%, 42.87% and 67.70%, respectively, the total nitrogen accumulation in rice grains increased by 17.25%, 45.62% and 47.74%, respectively and the total potassium accumulation in rice seeds increased by 17.96%, 54.28%, and 48.88%, respectively, the total phosphorus accumulation in rice shoots increased by 11.32%, 62.16% and 27.41%, respectively, the total accumulation of total potassium increased by 45.53%, 44.73% and 64.64%, respectively, with the best comprehensive effect being the Vicia villosa var. and Vicia sativa L.. Green manure could improve soil properties and had the potential to improve soil fertility. Among them, the treatment of Vicia sativa L. had a pH increase of 2.96%, organic matter increased by 10.05%, and total nitrogen content increased by 4.41% compared to CK. The treatment of Astragalus sinicus L. had an organic matter increase of 1.43%, total nitrogen content increase of 24.25%, total phosphorus content increase of 9.20%, and available phosphorus content increase of 10.95% compared to CK. In summary, the biomass and nutrient accumulation of Vicia villosa var. and Vicia sativa L. were both high, and their flipping could improve the yield, taste value and nutrient accumulation of rice. Therefore, they were recommended as green manure varieties for planting in this region; Astragalus sinicus L. and Vicia sativa L. had the potential to increase soil fertility through tillage, while Vicia sativa L. had a better effect. This study could provide a theoretical basis for the utilization of green manure and sustainable agricultural production in the northern Jiangsu region.