您好，欢迎访问新疆农业科学院 机构知识库！
新疆农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Substitution of Inorganic Nitrogen Fertilizer with Green Manure (GM) Increased Yield Stability by Improving C Input and Nitrogen Recovery Efficiency in Rice Based Cropping System

文献类型： 外文期刊

作者： Qaswar, Muhammad 1 ; Huang, Jing 1 ; Ahmed, Waqas 1 ; Liu, Shujun 1 ; Li, Dongchu 1 ; Zhang, Lu 1 ; Liu, Lisheng 1 ; Xu, 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Observat Stn Qiyang Agriecol Syst, Qiyang 426182, Hunan, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Conservat, Urumqi 830091, Peoples R China

4.Henan Univ Sci & Technol, Coll Agr, Luoyang 471000, Peoples R China

关键词： green manure; carbon input; crop yield stability; soil C:N ratio; nitrogen recovery efficiency

期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）

ISSN：

年卷期： 2019 年 9 卷 10 期

页码：

收录情况： SCI

摘要： A long-term field experiment was carried out (since 2008) for evaluating the effects of different substitution rates of inorganic nitrogen (N) fertilizer by green manure (GM) on yield stability and N balance under double rice cropping system. Treatments included, (1) N-0 (no N fertilizer and no green manure); (2) N-100 (recommended rate of N fertilizer and no green manure); (3) N-100-M (recommended rate of N fertilizer and green manure); (4) N-80-M (80% of recommended N fertilizer and green manure); (5) N-60-M (60% of recommended N fertilizer and green manure); and (6) M (green manure without N fertilization). Results showed that, among all treatments, annual crop yield under N-80-M treatment was highest. Crop yield did not show significant differences between N-100-M and N-80-M treatments. Substitution of different N fertilizer rates by GM reduced the yield variability index. Compared to the N-0 treatment, yield variability index of early rice under N-100-M, N-80-M, and N-60-M treatments was decreased by 11%, 26%, and 36%, respectively. Compared to the N-0 treatment, yield variability index of late rice was decreased by 12%, 38%, 49%, 47%, and 24% under the N-100, N-100-M, N-80-M, N-60-M, and M treatments, respectively. During period of 2009-2013 and 2014-2018, nitrogen recovery efficiency (NRE) was highest under N-80-M treatment and N balance was highest under N-100 treatment. NRE of all treatments with GM was increased over the time from 2009-2013 to 2014-2018. All treatments with GM showed increasing trend of SOC over the years. Substitution of N fertilizer by GM also increased C inputs and soil C:N ratio compared to the N-100 and N-0 treatments. Boosted regression model indicated that C input, N uptake and AN were most influencing factors of crop yield. Thus, we concluded that N fertilization rates should be reduced by 20% under GM rotation to attain high yield stability of double rice cropping system through increasing NRE and C inputs.

  • 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：新疆农业科学院

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