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Responses of N 2 O, CO 2 , and NH 3 Emissions to Biochar and Nitrification Inhibitors Under a Delayed Nitrogen Application Regime

Author

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  • Haizhong Wu

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    College of Geography and Planning, Chizhou University, Chizhou 247100, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
    These authors contributed equally to this work.)

  • Daichang Wang

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
    These authors contributed equally to this work.)

  • Dengxiao Zhang

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Wei Rao

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Qingsong Yuan

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Xiaobo Shen

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Guozhen Ma

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Xiaolei Jie

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

  • Shiliang Liu

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
    Key Laboratory of Arable Land Quality Conservation in the Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China)

Abstract

Greenhouse gas and NH 3 emissions are exacerbated by the inappropriate timing and excessive application of nitrogen (N) fertilizers in wheat cultivation in China. In this study, the impacts on N 2 O, CO 2 , and NH 3 emissions of a delayed and reduced N application regime on the Huang-Huai-Hai Plain were investigated. The treatments comprised the control (N 0 ), conventional N at 270 kg N ha −1 (N 270 ) and optimized N application of 180 kg N ha −1 (N 180 ), N 180 + biochar at 7.5 t ha −1 (N 180 B 7.5 ), N 180 + biochar at 15 t ha −1 (N 180 B 15 ), N 180 + DMPP (a nitrification inhibitor; N 180 D), N 180 D + biochar at 7.5 t ha −1 (N 180 DB 7.5 ), and N 180 D + biochar at 15 t ha −1 (N 180 DB 15 ). Reduced N application (N 180 ) lowered N 2 O and NH 3 emissions. Biochar application resulted in a 4–25% and 12–16% increase in N 2 O and NH 3 emissions, respectively. Application of DMPP significantly decreased N 2 O emissions by 32% while concurrently inducing a 9% increase in NH 3 emissions. Co-application of DMPP and biochar significantly reduced the activity of nitrification enzymes (HAD, NOO), resulting in a reduction of 37–38% in N 2 O emissions and 13–14% in NH 3 emissions. No significant differences in CO 2 emissions were observed among the various N treatments except the N 0 treatment. Application of DMPP alone did not significantly affect grain yield. However, biochar, in combination with DMPP, effectively increases grain yield. The findings suggest that the N 180 DB 15 treatment has the potential to reduce emissions of N 2 O and NH 3 while concurrently enhancing soil fertility (pH, SOC) and wheat yield.

Suggested Citation

  • Haizhong Wu & Daichang Wang & Dengxiao Zhang & Wei Rao & Qingsong Yuan & Xiaobo Shen & Guozhen Ma & Xiaolei Jie & Shiliang Liu, 2024. "Responses of N 2 O, CO 2 , and NH 3 Emissions to Biochar and Nitrification Inhibitors Under a Delayed Nitrogen Application Regime," Agriculture, MDPI, vol. 14(11), pages 1-23, November.
  • Handle: RePEc:gam:jagris:v:14:y:2024:i:11:p:1986-:d:1514641
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    References listed on IDEAS

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    1. Hanqin Tian & Rongting Xu & Josep G. Canadell & Rona L. Thompson & Wilfried Winiwarter & Parvadha Suntharalingam & Eric A. Davidson & Philippe Ciais & Robert B. Jackson & Greet Janssens-Maenhout & Mic, 2020. "A comprehensive quantification of global nitrous oxide sources and sinks," Nature, Nature, vol. 586(7828), pages 248-256, October.
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    Cited by:

    1. Chi, Yanbing & Wei, Chenchen & Yang, Peiling & Yang, Le & Fan, Linlin & Shi, Miaomiao, 2025. "Quantifying the influence of 3,4-dimethylpyrazole phosphate on soil nitrous oxide production in multi-year reclaimed water-irrigated soil," Agricultural Water Management, Elsevier, vol. 310(C).

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