Chinese Milk Vetch Improves Plant Growth, Development and N-15 Recovery in the Rice-Based Rotation System of South China
文献类型： 外文期刊
作者： Xie, Zhijian 1 ; He, Yaqin 2 ; Tu, Shuxin 2 ; Xu, Changxu 1 ; Liu, Guangrong 1 ; Wang, Huimin; Cao, Weidong; Liu, H 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resources & Environm, Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang 330200, Jiangxi, Peoples R China
2.Huazhong Agr Univ, Coll Resource & Environm, Microelements Res Ctr, Wuhan 430070, Peoples R China
3.Jiangxi Agr Univ, Sch Econ & Management, Key Lab Agr Resources & Ecol Poyang Lake Basin Ji, Nanchang 330045, Jiangxi, Peoples R China
4.Jiangxi Agr Univ, Sch Econ & Management, Key Lab Agr Resources & Ecol Poyang Lake Basin Ji, Nanchang 33004
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2017 年 7 卷
页码：
收录情况： SCI
摘要： Chinese milk vetch (CMV) is vital for agriculture and environment in China. A pot experiment combined with N-15 labeling (including three treatments: control, no fertilizer N and CMV; N-15-labeled urea alone, (NU)-N-15; substituting partial (NU)-N-15 with CMV, (NU)-N-15-M) was conducted to evaluate the impact of CMV on plant growth, development and (NU)-N-15 recovery in rice-based rotation system. The (NU)-N-15-M mitigated oxidative damage by increasing antioxidant enzymes activities and chlorophyll content while decreased malondialdehyde content in rice root and shoot, increased the biomass, total N and N-15 uptake of plant shoots by 8%, 12% and 39% respectively, thus inducing a noticeable increase of annual N-15 recovery by 77% versus (NU)-N-15 alone. Remarkable increases in soil NH4+ and populations of bacteria, actinomycetes and azotobacter were obtained in legume-rice rotation system while an adverse result was observed in soil NO3-content versus fallow-rice. CMV as green manure significantly increased the fungal population which was decreased with cultivating CMV as cover crop. Therefore, including legume cover crop in rice-based rotation system improves plant growth and development, annual N conservation and recovery probably by altering soil nitrogen forms plus ameliorating soil microbial communities and antioxidant system which alleviates oxidative damages in plants.
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