您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Improving nitrogen use efficiency and reducing environmental cost with long-term nutrient expert management in a summer maize-winter wheat rotation system

文献类型： 外文期刊

作者： Huang, Shaohui 1 ; He, Ping 1 ; Jia, Liangliang 2 ; Ding, Wencheng 1 ; Ullah, Sami 1 ; Zhao, Rongrong 1 ; Zhang, Jiaji 1 ;

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

2.Hebei Acad Agr & Forestry Sci, Hebei Fertilizer Technol Innovat Ctr, Inst Agr Resources & Environm, Shijiazhuang 050051, Hebei, Peoples R China

3.Univ Okara, Dept Biol, Okara 56130, Pakistan

关键词： Nutrient expert; Yield; Nitrogen use efficiency; Environmental cost; Economic benefit

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：5.374； 五年影响因子：6.368 ）

ISSN： 0167-1987

年卷期： 2021 年 213 卷

页码：

收录情况： SCI

摘要： Excessive fertilization, poor management, low nitrogen (N) use efficiency and heavy pollution are the current issues that exist in intensively cultivated summer maize-winter wheat rotation system in China. To address these problems, we adopted the Nutrient Expert (NE) decision support system and compared it with the Farmer's Practice (FP). We explored the effects of NE and FP on grain yield, N use efficiency, soil N accumulation, environmental cost, and profitability in the rotation system from 2009 to 2018. The results showed that there was no significant yield difference between the NE (14.4 Mg ha- 1) and FP (14.3 Mg ha- 1), while reducing N application by 23.1 % in NE. Compared with the FP treatment, the NE increased the apparent recovery efficiency of N (apparent REN), accumulated recovery efficiency of N (accumulated REN), agronomic efficiency of N (AEN) and partial factor productivity of N (PFPN) by 25.0 %, 26.8 %, 31.1 % and 32.1 %, respectively, which also indicated a less N loss achieved by NE. The NE resulted in less N accumulation in the soil profile than FP, with reductions of 32.1 % and 44.2 % in the 0-100 cm and 60-100 cm soil layers, respectively. Moreover, calculations of economic benefit that considered the environmental cost showed that NE had an economic advantage (13.8 % of increase in net income; and 27.2 % of decrease in environmental cost) over FP. This study proved that long-term NE management is a sustainable management approach with advantages in maintaining grain yield, improving N use efficiency and profitability, and reducing environmental cost for the summer maize-winter wheat rotation system.

  • 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：江苏省农业科学院

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