| 添加麦秸对鸡粪堆肥过程中氮素减排及细菌群落的影响 |
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| 引用本文： | 曹丽娜,王岩,王跃,李沛,郑珂,刘佳琪,李红丽.添加麦秸对鸡粪堆肥过程中氮素减排及细菌群落的影响[J].农业环境科学学报,2023,42(11):2560-2569. |
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| 作者姓名： | 曹丽娜 王岩 王跃 李沛 郑珂 刘佳琪 李红丽 |
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| 作者单位： | 郑州大学生态与环境学院, 郑州 450001;郑州大学河南省环境与资源国际联合实验室, 郑州 450001 |
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| 基金项目： | 国家重点研发计划项目(2021YFD1700900) |
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| 摘 要： | 好氧堆肥是实现鸡粪资源化利用最主要的技术手段，然而在堆肥过程中氮素损失较为严重，既降低肥效又引起严重的污染。本文以纯鸡粪堆肥为对照，利用麦秸将鸡粪堆肥的C/N调节至15，分析了堆肥过程材料中理化性质、氮素转化和微生物群落变化，探讨了减少堆肥氮素损失的技术与机理。结果显示，加入麦秸后堆肥高温持续时间达到23 d，比对照延长了9 d,pH较对照组明显降低，氮素损失降低了39.67%。硝态氮含量达到281.99 mg·kg-1，比对照增加了68.75%。微生物群落趋于稳定，具有硝化功能的细菌o＿＿Staphylococcales、o＿＿Brachybacterium、f＿＿Staphylococcaceae、g＿＿Staphylococcus、g＿＿Salinicoccus相对丰度比对照分别增加了88.45%、96.39%、88.45%、96.08%、79.20%，有利于堆体氮素保留和转化。试验结果表明，加入麦秸秆之后影响了鸡粪堆肥的细菌群落结构，增加了具有硝化功能的细菌丰度，从而减少了堆体氮素的损失。
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| 关 键 词： | 氮素减排 麦秸 鸡粪 好氧堆肥 细菌多样性 |
| 收稿时间： | 2023/6/26 0:00:00 |
Effects of wheat straw addition on nitrogen emission reduction and bacterial community during chicken manure composting |
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| CAO Lin,WANG Yan,WANG Yue,LI Pei,ZHENG Ke,LIU Jiaqi,LI Hongli.Effects of wheat straw addition on nitrogen emission reduction and bacterial community during chicken manure composting[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2023,42(11):2560-2569. |
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| Authors: | CAO Lin WANG Yan WANG Yue LI Pei ZHENG Ke LIU Jiaqi LI Hongli |
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| Institution: | College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China;Henan International Joint Laboratory of Environment and Resources, Zhengzhou University, Zhengzhou 450001, China |
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| Abstract: | Aerobic composting is the main technical mean used in the resource use of chicken manure. However, nitrogen loss in the composting process is more severe, which not only reduces the fertilizer efficiency but also causes severe pollution. In this study, the C/N of chicken manure compost was adjusted to 15 using wheat straw. The physicochemical properties, nitrogen conversion, and microbial community changes of the composting process were analyzed, and mechanisms for reducing compost nitrogen loss were explored. The results showed that the duration of high compost temperatures after adding wheat straw lasted 23 days, which was 9 days longer than the control. The pH was significantly reduced, and the nitrogen loss was reduced by 39.67%. The nitrate nitrogen content reached 281.99 mg·kg-1, which was increased by 68.75% compared to the control. The microbial community stabilized, and the relative abundance of bacteria with nitration function, such as o__Staphylococcales, o__Brachybacterium, f__Staphylococcaceae, g__Staphylococcus and g__Salinicoccus, increased by 88.45%, 96.39%, 88.45%, 96.08%, and 79.20% compared with the control group, respectively, which were beneficial to the retention and transformation of nitrogen in the pile. The experimental results showed that the addition of wheat straw affected the bacterial community structure of chicken manure compost, while increasing bacteria abundance with nitrification function, and reducing nitrogen loss in the pile. |
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| Keywords: | nitrogen emission reduction wheat straw chicken manure aerobic compost bacterial diversity |
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