Chinese Milk Vetch as Green Manure Mitigates Nitrous Oxide Emission from Monocropped Rice System in South China
文献类型： 外文期刊
作者： Xie, Zhijian 1 ; Shah, Farooq 1 ; Tu, Shuxin 2 ; Xu, Changxu 1 ; Cao, Weidong 5 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resources Environm, Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang, Jiangxi, Peoples R China
2.Huazhong Agr Univ, Coll Resources & Environm, Microelement Res Ctr, Wuhan, Hubei, Peoples R China
3.Abdul Wali Khan Univ Mardan, Dept Agr, Khyber Pakhtunkhwa, Pakistan
4.Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou, Hubei, Peoples R China
5.CAAS, Inst Agr Resources & Reg Planning, Beijing, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2016 年 11 卷 12 期
页码：
收录情况： SCI
摘要：
Monocropped rice system is an important intensive cropping system for food security in China. Green manure (GM) as an alternative to fertilizer N (FN) is useful for improving soil quality. However, few studies have examined the effect of Chinese milk vetch (CMV) as GM on nitrous oxide (N2O) emission from monocropped rice field in south China. Therefore, a pot-culture experiment with four treatments (control, no FN and CMV; CMV as GM alone, M; fertilizer N alone, FN; integrating fertilizer N with CMV, NM) was performed to investigate the effect of incorporating CMV as GM on N2O emission using a closed chamber-gas chromatography (GC) technique during the rice growing periods. Under the same N rate, incorporating CMV as GM (the treatments of M and NM) mitigated N2O emission during the growing periods of rice plant, reduced the NO3- content and activities of nitrate and nitrite reductase as well as the population of nitrifying bacteria in top soil at maturity stage of rice plant versus FN pots. The global warming potential (GWP) and greenhouse gas intensity (GHGI) of N2O from monocropped rice field was ranked as M
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