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

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  • Shangying Cai

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Yi Ma

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Zhenkang Bao

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Ziying Yang

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Xiangyu Niu

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Qingzhen Meng

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Dongsheng Qin

    (Henan Sangao Agricultural and Animal Husbandry Co., Ltd., Xinyang 465200, China)

  • Yan Wang

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Junfeng Wan

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

  • Xiaoying Guo

    (College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
    International Joint Laboratory of Environment and Resources of Henan Province, Zhengzhou 450001, China)

Abstract

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.

Suggested Citation

  • Shangying Cai & Yi Ma & Zhenkang Bao & Ziying Yang & Xiangyu Niu & Qingzhen Meng & Dongsheng Qin & Yan Wang & Junfeng Wan & Xiaoying Guo, 2024. "The Impacts of the C/N Ratio on Hydrogen Sulfide Emission and Microbial Community Characteristics during Chicken Manure Composting with Wheat Straw," Agriculture, MDPI, vol. 14(6), pages 1-18, June.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:6:p:948-:d:1416851
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    References listed on IDEAS

    as
    1. Jingmiao Shao & Chunyu Gao & Patience Afi Seglah & Jie Xie & Li Zhao & Yuyun Bi & Yajing Wang, 2023. "Analysis of the Available Straw Nutrient Resources and Substitution of Chemical Fertilizers with Straw Returned Directly to the Field in China," Agriculture, MDPI, vol. 13(6), pages 1-20, June.
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