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Exploring a Sustainable Cropping System in the North China Plain Using a Modelling Approach

文献类型： 外文期刊

作者： Wang, Huanyuan 1 ; Li, Baoguo 1 ; Jin, Liang 3 ; Hu, Kelin 1 ;

作者机构： 1.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China

2.Shaanxi Prov Land Engn Construct Grp Co Ltd, Nat Resources Minist, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710075, Peoples R China

3.Heilongjiang Acad Agr Sci, Soil Fertilizer & Environm Resources Inst, Harbin 150086, Peoples R China

关键词： water use efficiency; N use efficiency; different cropping systems; WNMM model; North China Plain

期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）

ISSN：

年卷期： 2020 年 12 卷 11 期

页码：

收录情况： SCI

摘要： The North China Plain (NCP) is one of the most important grain production regions in China. However, it currently experiences water shortage, severe nonpoint source pollution, and low water and N use efficiencies (WUE and NUE). To explore sustainable agricultural development in this region, a field experiment with different cropping systems was conducted in suburban Beijing. These cropping systems included a winter wheat and summer maize rotation system for one year (WM), three harvests (winter wheat-summer maize-spring maize) in two years (HT), and continuous spring maize monoculture (CS). Novel ways were explored to improve WUE and NUE and to reduce N loss via the alternative cropping system based on the simulation results of a soil-crop system model. Results showed that the annual average yields were ranked as follows: WM > HT > CS. The N leaching of WM was much larger than that of HT and CS. WUE and NUE were ranked as follows: WM < HT < CS. Comprehensive evaluation indices based on agronomic and environmental effects indicated that CS or HT have significant potential for approaches characterized by water-saving, fertilizer-saving, high-WUE, and high-NUE properties. Once spring maize yield reached an ideal level HT and CS became a high-yield, water-saving, and fertilizer-saving cropping systems. Therefore, this method would be beneficial to sustainable agricultural development in the NCP.

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