您好，欢迎访问江西省农业科学院 机构知识库！

Rational utilization of leguminous green manure to mitigate methane emissions by influencing methanogenic and methanotrophic communities

文献类型： 外文期刊

作者： Zhou, Guopeng 1 ; Gao, Songjuan 3 ; Xu, Changxu 4 ; Dou, Fugen 5 ; Shimizu, Katsu-yoshi 6 ; Cao, Weidong 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China

2.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China

3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China

4.Jiangxi Acad Agr Sci, Inst Soil&Fertilizer & Resource&Environm, Nanchang 330200, Jiangxi, Peoples R China

5.Texas A&M AgriLife Res Ctr, Beaumont, TX 77713 USA

6.Kagoshima Univ, Fac Agr, Kagoshima 8900065, Japan

关键词： Co-incorporation of rice straw and green manure; Greenhouse gas; Microbial mechanism; Paddy soil

期刊名称：GEODERMA （ 影响因子：6.114； 五年影响因子：6.183 ）

ISSN： 0016-7061

年卷期： 2020 年 361 卷

页码：

收录情况： SCI

摘要： Although rice straw return is widely recommended for maintaining or improving soil fertility and rice yields, it inevitably increases methane (CH4) emissions. Effective measures to mitigate CH4 emissions while guaranteeing grain yields are urgently needed. A 2-year mesocosm experiment was conducted. Six management systems, i.e., no residue (traditional management, CF), 100% rice straw (a popular practice among farmers, FR), 50% rice straw (F1/2R), leguminous green manure (FM), mixture of leguminous green manure and 100% rice straw (FMR), and a mixture of leguminous green manure and 50% rice straw (FM1/2R), were used. Compared with the CF, the organic residue returns could effectively improve rice productivity but increase the CH4 emissions. Notably, when compared with the FR, both F1/2R and FM could reduce the CH4 emissions, with equal crop yields, and FM1/2R not only increased the rice yields but also reduced the CH4 emissions, whereas FMR increased the rice yields and the CH4 emissions. Applications of organic residues significantly increased the soil methane production potentials (MPPs), methane oxidation potentials (MOPs), the abundances of methanogens and methanotrophs, and changed methanogenic and methanotrophic community structures in comparison with the CF. The partial least squares path model (PLS-PM) results showed that the MPPs had a strong direct effect on CH4 emissions, whereas an abundance of methanogens could serve as a proxy for predicting CH4 emissions. Moreover, relatively high MOPs associated with high Type I/Type II methanotroph ratios and relatively low dissolved organic carbon (DOC) concentrations were found to be central in lowering CH4 emission fractions under the F1/2R and FM1/2R treatments. Above all, the combined utilization of leguminous green manure and rice straw exhibited potential prospects for the enhancement of rice yields and for the mitigation of CH4 emissions, and the practice of mixing leguminous green manure with 50% rice straw performed the best of the treatments tested.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江西省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台