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Effects of combined application of animal slurry and mineral fertiliser on rice yield and soil nitrogen cycle microbes

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  • Pengcheng Wang

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Wuhan, Hubei, P.R. China)

  • Siyuan Jin

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Wuhan, Hubei, P.R. China)

  • Henglin Xiao

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Wuhan, Hubei, P.R. China)

  • Zhi Zhang

    (Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Wuhan, Hubei, P.R. China
    Key Laboratory for Crop and Animal Integrated Farming, Ministry of Agriculture and Rural Affairs, Nanjing, Jiangsu, P.R. China)

  • Cheng Hu

    (Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Wuhan, Hubei, P.R. China)

  • Yan Qiao

    (Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Wuhan, Hubei, P.R. China)

  • Donghai Liu

    (Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Wuhan, Hubei, P.R. China)

  • Xifa Guo

    (Agricultural Technology Promotion Service Center of Kanjiang Office, Wuxue, Hubei, P.R. China)

  • Xiangrong Peng

    (Wuxue City Agriculture and Rural Bureau, Wuxue, Hubei, P.R. China)

Abstract

This paper studied the response of rice yield and soil nitrogen (N) cycling microorganisms to the combined application of animal slurry and mineral fertiliser. A pot experiment was conducted on typical yellow-brown paddy soil. There were five treatments: (1) CK - no N fertilisation; (2) S0 - mineral fertilisation; (3) S30 - 30% slurry with 70% mineral fertilisation; (4) S60 - 60% slurry with 40% mineral fertilisation; and (5) S100 - slurry application. Rice yield, yield components, and soil properties were investigated at harvest. The abundance of soil N cycle functional genes abundance was quantified via quantitative real-time PCR. The rice yield reached a high level when the proportion of slurry used to replace mineral fertiliser was 30-50%. The yield in response to mineral fertiliser (S0) was equivalent to that in response to no N fertilisation since the formation of effective panicles was inhibited. With the slurry replacement ratio increase, the available phosphorus and potassium contents in the soil improved, but the nitrate content decreased. Considering the entire soil N cycle, nitrogen-fixing microbes (nifH), ammonia-oxidising archaea (AOA amoA) and nitrite-reducing microbes (nirS and nirK) had greater abundances, reaching 108 copies. Compared with those in the S0 treatment, the abundances of most N cycle functional genes in the S30 treatment, except for napA, significantly increased from 31.2% to 100.9%, and the increase in the abundance of nirS and nosZ in the S100 treatment reached 4 times, which was obviously greater than that of the other genes. Correlation analysis revealed that high soil pH promoted N fixation and nitrification, while NH4+-N had the opposite effect on N fixation and nitrification, and available phosphorus and potassium actively influenced denitrification. These results showed that a 30-50% slurry application ratio was recommended for rice, which was beneficial for maintaining high yields and high abundances of soil N cycle functional genes.

Suggested Citation

  • Pengcheng Wang & Siyuan Jin & Henglin Xiao & Zhi Zhang & Cheng Hu & Yan Qiao & Donghai Liu & Xifa Guo & Xiangrong Peng, 2024. "Effects of combined application of animal slurry and mineral fertiliser on rice yield and soil nitrogen cycle microbes," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 70(4), pages 220-228.
    • Handle: RePEc:caa:jnlpse:v:70:y:2024:i:4:id:315-2023-pse
    DOI: 10.17221/315/2023-PSE
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    References listed on IDEAS

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    1. Yin, Gaofei & Wang, Xiaofei & Du, Huiying & Shen, Shizhou & Liu, Canran & Zhang, Keqiang & Li, Wenchao, 2019. "N2O and CO2 emissions, nitrogen use efficiency under biogas slurry irrigation: A field study of two consecutive wheat-maize rotation cycles in the North China Plain," Agricultural Water Management, Elsevier, vol. 212(C), pages 232-240.
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