组合生物炭和DMPP通过微生物社区调节减少小麦作物的N2O排放
Haizhong Wu1,2,3, Dengxiao Zhang1,3, Xiaobo Shen1
1College of Resources and Environment, Henan Agricultural University, Zhengzhou, China.
Frontiers in plant science
|October 17, 2025
概括
延迟的应用与生物炭和化抑制剂相结合,显著减少了氧化 (N2O) 排放. 这种方法还通过改变土壤微生物群落,提高了宽作物的使用效率.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 延迟的应用可以提高农业中的使用效率.
- 延迟应用对氧化 (N2O) 排放和潜在的微生物机制的影响需要进一步调查.
- 生物炭和化抑制剂 (如DMPP) 是减轻N2O排放的潜在工具.
研究的目的:
- 研究生物炭和DMPP对土壤N2O排放在延迟应用下的影响.
- 了解影响N2O排放的微生物机制,以应对这些治疗.
- 评估延迟N应用,生物炭和DMPP对N使用效率和N减少的综合益处.
主要方法:
- 一个实地实验用六种治疗方法:对照,最佳N (ON),农民常规N (FN),ON +生物炭 (ONB),ON + DMPP (OND) 和ON +生物炭 + DMPP (ONDB).
- 测量累积N2O排放的方法.
- 分析土壤微生物群落,包括氨氧化细菌 (AOB) 和古菌 (AOA),以及参与化和脱化 (nirS, nirK, nosZ) 的基因.
主要成果:
- 与ON.相比,OND和ONDB处理显著减少了N2O累积排放量,分别减少了32%和38%.
- DMPP修正案减少了AOB的丰富性,同时提高了AOB社区中*Nitrospira*的比例.
- 相关性和随机森林分析确定了特定的微生物种群 (例如,Nitrospira,Cronobacter,Ramlibacter,Methylobacillus) 作为N2O排放的关键驱动因素.
结论:
- 延迟应用与生物炭和DMPP (ONDB处理) 的结合有效地减少了土壤N2O排放.
- 这种综合方法提供了减轻温室气体排放的双重好处,同时提高了使用效率.
- 了解微生物群落的转变对于优化在作物系统中管理N2O排放的战略至关重要.
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