This experiment was conducted in Yuyao City, Zhejiang Province, to investigate the effects of different seeding rates on the yield of direct-seeded late rice under the spring broccoli+single-season late rice rotation model. The rice variety Yongyou 1540 was used as the test material, 5 seeding rate treatments were designed: 11.25 (T1), 15.00 (T2), 18.75 (T3), 22.50 (T4), and 26.25 kg/hm2 (T5). Parameters such as rice growth period, tillering dynamics, and yield were measured for each treatment. The results showed that different seeding rates had no significant effect on the rice growth period. The number of seedlings during the tillering stage generally increased with higher seeding rates (except in the survey conducted on August 5). In terms of economic traits and yield, treatment T3 achieved the highest number of effective panicles (2.45 million panicles/hm2) and seed-setting rate (86.7%), while treatment T4 achieved the highest 1 000-grain weight (22.6 g). The yields treatments T3 and T4 were higher outputs of 7 877 and 7 658 kg/hm2, respectively. In conclusion, under the spring broccoli + single-season late rice rotation model, the suitable seeding rate for single-season late rice ranges from 18.75 to 22.50 kg/hm2.
This paper summarized the high yield cultivation technology for summer maize using dense planting and drip irrigation with integrated water and fertilizer management in Northern Anhui Province. Before sowing, maize varieties suitable for dense planting, such as Annong 218, are selected. Fine land preparation is carried out, and straw returning is implemented to enhance soil fertility. Precision sowing is performed before June 25 using a navigation-equipped seeder to complete direct seeding, fertilization, and drip tape laying in a single operation. Base fertilizer is applied through layered deep placement of maize-specific compound fertilizer at 40-45 kg/667 m2, accompanied by the installation of a precise drip irrigation system. Field management emphasizes accurate regulation of water and fertilizer, with staged drip irrigation and topdressing according to growth stages. Chemical control to prevent lodging is applied at the 6-8 leaf stage. Pest and disease control follows a prevention-first approach, and pesticides should be applied during the seedling stage, bell mouth stage, and tasseling and flowering stage to prevent rust, maize borer. Harvesting is conducted when the grain milk line disappears and moisture content falls below 28%, using high-performance combine harvesters. Post-harvest operations include grain drying, drip tape recycling, and straw returning. This technology system integrates superior varieties, dense planting, precise water and fertilizer management, and full mechanization to achieve high yield, efficiency, and green sustainable production in summer maize cultivation.
The relationship between forest and wildlife protection was explored through literature review analysis, and corresponding protection strategies were proposed based on the current status. In terms of the relationship, forests provide wildlife with habitats, food sources and a variety of ecological services, while wildlife plays an irreplaceable role in maintening ecological balance in forest ecosystems. At present, forest and wildlife protection still face challenges such as forest area, overutilization of wildlife resources and ecology environmental, which threaten biodiversity and the stability of ecosystems. To this end, it is necessary to strictly implement forest protection management systems, promote sustainable forest management methods, strengthen ecological restoration projects, and continuously improve the quality and coverage of forests; rely on sound laws and regulations to regulate the utilization of wildlife resources, increase law enforcement efforts, and raise public awareness of protection; at the same time, actively promote ecological restoration and green development, strengthen environmental monitoring and pollution control, and promote the coordinated and sustainable development of the economy, society and ecological environment. This paper provides a reference for forest and wildlife protection work.
As a versatile material, biochar exhibits extensive application potential in environmental remediation due to its adsorption capabilities. Modification methods were summarized from 3 aspects: pore structure, surface functional groups, and loaded metal active components. In terms of pore structure regulation, activating agents such as ZnCl2 and KOH can be used to tailor the pore structure of biochar, increasing its specific surface area and the number of active sites, thereby enhancing its adsorption capacity for gases (CO2) and organic pollutants. Regarding the modulation of surface functional groups, methods including oxidation (introducing acidic oxygen-containing functional groups such as hydroxyl and carboxyl groups using strong acids and strong bases), amination (introducing amino groups using urea or ammonia), and sulfonation (incorporating sulfonic groups with concentrated H2SO4) enable the directed introduction of oxygen-, nitrogen-, and sulfur-containing functional groups. These modifications improve biochar’s ability to adsorb heavy metals and organic pollutants. In the case of loading metal active components, employing metal salts (such as MgCl2, FeCl3, and ZnCl2) facilitates comprehensive enhancement of biochar’s properties, including specific surface area, pore structure, pore size distribution, and surface functional groups. This review provides a valuable reference for the directed modification and improvement of biochar.
This article reviewed the nutritional characteristics and application prospects of colored potatoes, analyzes the key areas that need to be focused on, and proposed corresponding strategies. Related in vitro and animal model studies have shown that colored potatoes have potential value in regulating blood lipids and antioxidation. They were widely applied in agricultural cultivation and scientific research, food processing, and ornamental agriculture. However, the current industrial development required focused attention on key aspects including variety breeding, market awareness, cultivation techniques, and pest and disease control. Based on this, the following strategies were proposed: the enhancement of variety breeding and genetic mechanism research, along with the improvement of the variety regulation system; the promotion of market awareness and competitiveness through multi-channel publicity and brand building; and the adoption of green and efficient cultivation techniques, coupled with the establishment of a monitoring, early warning, and integrated prevention and control system for pests and diseases. This study provides a reference for the rational utilization and sustainable development of the colored potato industry.
