强化型EM菌剂对金针菇菌糠堆肥的影响

刘维维, 金晓, 辛寒晓, 史庆华, 姚强, 刘丽英, 孙中涛

中国农学通报. 2020, 36(22): 78-85

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中国农学通报 ›› 2020, Vol. 36 ›› Issue (22) : 78-85. DOI: 10.11924/j.issn.1000-6850.casb20190600342
资源·环境·生态·土壤·气象

强化型EM菌剂对金针菇菌糠堆肥的影响

作者信息 +

Effect of Enhanced EM Microbial Agent on the Spent Flammulina Mushroom Substrate Composting

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History +

摘要

为提高EM菌剂在菌糠堆肥中的应用效果,加速腐熟进程,改善堆肥质量,采用纤维素酶与木聚糖酶高产菌株黑曲霉SNH-7、蛋白酶高产菌株枯草芽孢杆菌SNK-103与EM菌剂进行复配,研制强化型EM菌剂,并研究其对菌糠堆肥的影响。结果表明:与普通EM菌剂相比,接种强化型EM菌剂的处理堆肥过程中微生物代谢更加旺盛,温度、pH、EC值、总有机碳、可溶性有机碳、总氮、铵态氮、硝态氮、C/N、腐植酸和黄腐酸含量等理化指标的升高或降低幅度更大,腐熟进程加快;成品堆肥的GI提高,C/N降低,总氮、硝态氮、总腐植酸和游离腐植酸的含量升高,生物安全性更好、肥效更高。说明在EM菌剂中补充纤维素酶、木聚糖酶和蛋白酶高产菌株,可强化其对纤维素、木质素和蛋白质的降解能力,在无辅料、高C/N、低pH的不利条件下,添加该菌剂能加速堆肥进程,提高堆肥质量。

Abstract

To improve the application effect of EM microbial agent in spent mushroom substrate composting, accelerate the process of decomposition and improve the quality of the compost, an enhanced EM microbial agent was prepared by adding the cellulase and xylanase-producting strain Aspergillus niger SNH-7 and the protease-producing strain Bacillus subtilis SNK-103 to the common EM microbial agent, and its effect on spent mushroom substrate composting was studied. Results showed that the microbial metabolism was more vigorous during composting by inoculating the enhanced EM microbial agents, comparing with common EM microbial agents. The physical and chemical indexes such as temperature, pH, EC, total organic carbon, soluble organic carbon, total nitrogen, ammonium nitrogen, nitrate nitrogen, C/N, humic acid and fulvic acid content increased or decreased more greatly, which meant that the maturation process was accelerated. The GI of the finished compost increased, C/N decreased, and the contents of total nitrogen, nitrate nitrogen, total humic acid and free humic acid increased, which indicated that the compost had better biological safety and higher fertilizer efficiency. All these indicated that supplementation of high-yield strains of cellulase, xylanase and protease in EM microbial agent could accelerate the composting process of spent mushroom substrate and improve the composting quality by strengthening its ability to degrade cellulose, lignin and protein under no excipients, high C/N, and low pH.

关键词

菌糠 / 堆肥 / EM菌剂 / 枯草芽孢杆菌 / 黑曲霉

Key words

spent mushroom substrate / compost / EM microbial agent / Bacillus subtilis / Aspergillus niger

引用本文

导出引用
刘维维 , 金晓 , 辛寒晓 , 史庆华 , 姚强 , 刘丽英 , 孙中涛. 强化型EM菌剂对金针菇菌糠堆肥的影响. 中国农学通报. 2020, 36(22): 78-85 https://doi.org/10.11924/j.issn.1000-6850.casb20190600342
Liu Weiwei , Jin Xiao , Xin Hanxiao , Shi Qinghua , Yao Qiang , Liu Liying , Sun Zhongtao. Effect of Enhanced EM Microbial Agent on the Spent Flammulina Mushroom Substrate Composting. Chinese Agricultural Science Bulletin. 2020, 36(22): 78-85 https://doi.org/10.11924/j.issn.1000-6850.casb20190600342

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对不同畜禽粪便在堆肥过程中各种含氮化合物的动态变化进行了研究,结合综合性腐
熟度评价指标——种子发芽指数(GI),探讨了畜禽粪便堆肥过程中与氮有关的腐熟度评价
指标.结果表明:随着堆肥的进行,除奶牛粪外,其它畜禽粪便的全氮(TN)含量均呈先下
降而后平稳变化趋势,奶牛粪则呈先增加而后平稳变化趋势;各种畜禽粪便中,碱解性氮(
HN)含量先增后降;NH4+-
N含量先下降而后保持平稳;NO3--N含量则持续增
加;NH4+-N/NO3--N迅速降低.堆肥腐熟度指标中,除综合性评价指标GI值外,HN/
TN和NH4+-N/TN也可作为评价畜禽粪便腐熟程度的优选指标,而NO3--N/TN只能作为一般性评价指标.根据综合性评价指标GI值达到腐熟要求的标准(GI>0.50),除仔猪粪外,其它畜禽粪便在HN/TN<20.77%、NH4+-N/TN<10.06%及NO3--N/TN>0.38%时基本达到腐熟要求.


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以鸡粪和麦秸为原料,在静态通气条件下,研究了堆腐过程堆体温度及氧化还原酶活性变化。结果表明,添加微生物菌剂后,堆体不同部位温度均高于CK(不加微生物菌剂)处理,且升温阶段持续时间较短。微生物菌剂处理堆料50℃以上的持续时间为14~20 d,CK处理50℃以上的持续时间7.5~10 d;添加微生物菌剂处理的过氧化氢酶活性在第1~26 d均大于CK处理;堆料中添加菌剂处理在堆腐中期的脱氢酶活性大于CK处理;添加菌剂处理在堆肥的第5~28 d,多酚氧化酶活性大于CK处理的活性;说明微生物菌剂可促进有机物的降解及其降解产物的转化。添加菌剂处理在堆腐30 d后E4/E6(为胡敏酸在465 nm与665 nm波长下吸光值的比值)比值为1.57~1.68,CK处理为2.16~2.41,表明添加菌剂能促进腐殖质的缩合和芳构化。
[32]
史龙翔, 谷洁, 潘洪加, 等. 复合菌剂提高果树枝条堆肥过程中酶活性[J]. 农业工程学报, 2015,31(5):244-251.
为了探讨接种复合菌剂对果树枝条堆肥过程的影响,以猪粪和果树枝条为试验材料,研究了复合菌剂对高温好氧堆肥过程的温度、酶活性及微生物群落功能多样性的影响。结果表明,接种复合菌剂在堆肥前期提高堆肥温度,比对照处理高温期(高于55℃)持续时间多 3d,促进堆料的腐熟。接种菌剂还能有效地提高果树枝条堆肥过程中酶活性,纤维素酶、漆酶、锰过氧化物酶和木质素过氧化物酶活性在堆肥过程中分别比CK处理提高15.0%~19.8%、1.0%~11.0%、4.1%~26.8%、4.0%~22.2%。Biolog 微平板法测定结果表明,接种复合菌剂显著提高了堆肥中微生物的平均每孔颜色变化率(average well color development),并改变了高温期和降温期微生物对6大类碳源的利用;主成分分析表明,复合菌剂主要在高温期发挥作用,对堆料中微生物起分异作用的碳源主要为糖类和氨基酸类。
[33]
Meng L, Li W, Zhang S, et al. Feasibility of co-composting of sewage sludge, spent mushroom substrate and wheat straw[J]. Bioresource Technology, 2017,226.
In this work, the mesoporous SBA-15 and a series of modified catalysts based on it, such as Al-SBA-15 and Ni/Al-SBA-15, were synthesized and used for eliminating the char formation during the depolymerization of hydrolyzed lignin. The temperature, time and solvent effects on the lignin depolymerization were also investigated. Results showed that the repolymerization was effectively suppressed over SBA-15 due to its well-ordered pore structure and large pore size. The addition of Al and Ni elements in SBA-15 could improve the lignin depolymerization performance and saturate the instable intermediates. Ethanol was found to be more effective in suppressing repolymerization than other solvents. 81.4% liquefaction degree and 21.90wt% monomer yield was achieved, and no obvious char was observed after the depolymerization of hydrolyzed lignin in ethanol solvent at 300 degrees C for 4h over Ni/Al-SBA-15(20) catalyst.
[34]
姜新有, 王晓东, 周江明, 等. 初始pH值对畜禽粪便和菌渣混合高温堆肥的影响[J]. 浙江农业学报, 2016,28(9):1595-1602.
以猪粪和菌渣为主要原料,过磷酸钙和石灰作为pH调节剂,设计8个不同pH值的堆肥处理,研究堆肥初始pH值与堆肥腐熟进程及理化性状的关系。结果表明,在本试验条件下,随着堆肥初始pH值的提高,堆肥升温速率、最高温度和有机物降解率均上升。然而,pH值的提高导致堆肥中NH4+-N的积累量下降,堆肥产品中氮素损失上升。综合考虑堆肥效率和产品质量等因素,建议畜禽粪便堆肥中添加石灰量不要超过堆料鲜质量的0.6%或添加过磷酸钙量不要超过堆料鲜质量的5.2%。堆肥初始pH值在6.42~6.83之间有利于减少氮素损失和提高堆肥效率。
[35]
Xi B D, He X S, Wei Z M, et al. Effect of inoculation methods on the composting efficiency of municipal solid wastes[J]. Chemosphere, 2012,88(6):744-750.
Four types of inoculation methods were studied during the composting of municipal solid wastes and dry grass (MSWG). The methods included a control group as well as initial-stage, two-stage, and multi-stage inoculations. Fulvic acids were extracted from the composting materials and characterized by spectroscopic techniques. The results showed that inoculation of microbes in MSWG enhanced the biodegradation of aliphatics, proteins, and polysaccharides. The inoculation also increased the molecular weight, humic- and fulvic-like compound content, as well as humification degree of the composting products. The inoculation of microbes in MSWG significantly improved composting process and efficiency. The improvement efficiency was in the order of initial-stage < two-stage < multi-stage inoculations. Inoculation of microbes based on composting organic matter composition and temperature enhanced composting efficiency.
[36]
Wei Z, Xi B, Zhao Y, et al. Effect of inoculating microbes in municipal solid waste composting on characteristics of humic acid[J]. Chemosphere, 2007,68(2):368-374.
Municipal solid waste (MSW) compost contains a significant amount of humic substances. In this study, the compost consisted of residual MSW with the metal, plastic and glass removed. In order to enhance degradation processes and the degree of composting humification, complex microorganisms (Bacillus casei, Lactobacillus buchneri and Candida rugopelliculosa) and ligno-cellulolytic (Trichoderma and White-rot fungi) microorganisms were respectively inoculated in the composting process. During the MSW composting, humic acid (HA) was extracted and purified. Elements (C, N, H, O) and spectroscopic characteristics of the HA were determined using elementary analyzer, UV, Fourier transform infrared (FTIR), and fluorescence spectroscopy. The elements analysis, UV, FTIR and fluorescence spectra all led to the same conclusion, that is inoculations with microbes led to a greater degree of aromatization of HA than in the control process (CK) with no inoculation microbes. This indicated that inoculation with microbes in composting would improve the degree humification and maturation processes, in the following order: lingo-cellulolytic>complex microorganisms>CK. And mixed inoculation of MSW with complex microorganisms and lingo-cellulolytic during composting gave a greater degree of HA aromatization than inoculation with complex microorganisms or lingo-cellulolytic alone. But comparing with the HA of soil, the HA of MSW compost revealed a lower degree of aromatization.

基金

山东省现代农业产业技术体系专项基金项目“蔬菜栽培与肥料岗位”(SDAIT-05-05)
山东省农业重大应用技术创新项目“功能性有机物料在设施番茄绿色生产中应用技术的集成与示范”(2018年)
山东省重大科技创新工程项目“滨海盐碱地生态保育地力提升关键技术研究与示范”(2017CXGC0311)
山东省农科院农业科技创新工程资助项目“农业微生物资源保护与共享利用”(CXGC2017A01)

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