The Impacts of the C/N Ratio on Hydrogen Sulfide Emission and Microbial Community Characteristics during Chicken Manure Composting with Wheat Straw

稻草 肥料 硫化氢 堆肥 农学 鸡粪 环境科学 微生物种群生物学 化学 生物 硫黄 细菌 遗传学 有机化学
作者
Shangying Cai,Yi Ma,Zhenkang Bao,Ziying Yang,Xiangyu Niu,Qingzhen Meng,Dongsheng Qin,Yan Wang,Junfeng Wan,Xiaoying Guo
出处
期刊:Agriculture [Multidisciplinary Digital Publishing Institute]
卷期号:14 (6): 948-948 被引量:4
标识
DOI:10.3390/agriculture14060948
摘要

Wheat straw (WS) has long been subjected to rough treatment by traditional incineration, which not only results in the waste of biomass resources but also poses a risk of atmospheric pollution and is not conducive to the sustainable utilization of natural resources. With great humification potential, WS can be utilized as a valuable composting material. The study optimized the C/N ratio by mixing WS and chicken manure (CM) as composting raw materials, and found that this method could significantly improve the compost quality. In comparison to the conventional poplar woodchip (PW) conditioning, the incorporation of WS resulted in an elevated composting temperature, an extended high-temperature period, a more expeditious lignocellulose degradation, a notable enhancement in the organic matter content, a suppression of hydrogen sulfide production under low C/N ratio, and a promotion of elemental sulfur conversion, collectively contributing to an enhanced overall quality and environmental friendliness of the compost. Correlation analysis of microbial communities and environmental factors demonstrated that the mixed compost facilitated the growth of actinomycetes and sulfur-transforming bacteria. Additionally, structural equation model indicated that parameters such as temperature and pH value played a key role in the composting process.
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