Global comprehensive evaluation shows that green manure enhances crop productivity while mitigating gaseous nitrogen losses
文献类型： 外文期刊
作者： Huang, Hua 1 ; Zhang, Zihui 1 ; Wu, Qi 1 ; Liu, Zeyu 1 ; Wang, Qinghe 1 ; Ying, Yuhang 1 ; Zhang, Zechao 1 ; Zhang, Huijuan 1 ; Wang, Yifan 1 ; Zhang, Guangxin 1 ; Bangura, Kemoh 5 ; Liu, Enke 3 ; Xue, Jianfu 1 ; Gao, Zhiqiang 1 ; Cai, Tie 2 ; Zhang, Peng 2 ; Wu, Peng 1 ;
作者机构： 1.Shanxi Agr Univ, Coll Agr, Taigu 030801, Shanxi, Peoples R China
2.Northwest A&F Univ, Coll Agron, Yangling 712100, Shanxi, Peoples R China
3.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr Northeastern China, Daqing, Peoples R China
5.Sierra Leone Agr Res Inst SLARI, Rokupr Agr Res Ctr RARC, PMB 1313, Freetown, Sierra Leone
关键词： Crop productivity; Green manure; Global assessment; N2O; NH3
期刊名称：RESOURCES CONSERVATION AND RECYCLING （ 影响因子：10.9； 五年影响因子：12.7 ）
ISSN： 0921-3449
年卷期： 2025 年 220 卷
页码：
收录情况： SCI
摘要： Green manure (GM) is promising for use in sustainable agriculture, but its impacts on nitrogen emissions from farmland and crop productivity are unclear. Thus, we conducted a meta-analysis based on 2,616 data pairs from 218 studies to clarify the effects of GM. GM enhanced soil nitrogen retention to increase the crop yield and nitrogen use efficiency (NUE) by 3.71 % and 24.41 %, respectively, and reduce ammonia (NH3) emissions by 9.09 %, but with no significant impact on nitrous oxide (N2O) emissions. GM was most effective in low-quality soil and warm, humid climates, especially legume GM. Combining GM with high nitrogen fertilizer use may further reduce NH3 emissions. Machine learning models showed that GM could increase global maize and rice yields by 9.78 % and 11.10 %, respectively, and reduce NH3 emissions from major crops by 9.92 %, but increase N2O emissions from paddy fields by 9.45 %. In general, GM can enhance crop productivity and reduce agricultural environmental costs to promote green development.
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