Optimization of inter-seasonal nitrogen allocation increases yield and resource-use efficiency in a water-limited wheat-maize cropping system in the North China Plain

作     者：Xiaonan Zhou Chenghang Du Haoran Li Zhencai Sun Yifei Chen Zhiqiang Gao Zhigan Zhao Yinghua Zhang Zhimin Wang Ying Liu Xiaonan Zhou;Chenghang Du;Haoran Li;Zhencai Sun;Yifei Chen;Zhiqiang Gao;Zhigan Zhao;Yinghua Zhang;Zhimin Wang;Ying Liu

作者机构：College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China College of Information and Electrical EngineeringChina Agricultural UniversityBeijing 100193China Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-Quality and Efficiency in Loess PlateauTaigu 030801ShanxiChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2024年第12卷第3期

页      面：907-914页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 

基　　金：supported by Hebei Province Key Research Project(21327003D-1) Beijing Science and Technology Planning Project(Z221100006422005) China Postdoctoral Science Foundation(2023M743815) China Agriculture Research System(CARS301) 

主　　题：Cropping system Water-saving irrigation North China Plain Nitrogen optimization Sustainable intensification 

摘      要：Winter wheat–summer maize cropping system in the North China Plain often experiences droughtinduced yield reduction in the wheat season and rainwater and nitrogen(N)fertilizer losses in the maize *** study aimed to identify an optimal interseasonal water-and N-management strategy to alleviate these *** ratios of allocation of 360 kg N ha^(-1)between the wheat and maize seasons under one-time presowing root-zone irrigation(W0)and additional jointing and anthesis irrigation(W2)in wheat and one irrigation after maize sowing were set as follows:N1(120:240),N2(180:180),N3(240:120)and N4(300:60).The results showed that under W0,the N3 treatment produced the highest annual yield,crop water productivity(WPC),and nitrogen partial factor productivity(PFPN).Increased N allocation in wheat under W0 improved wheat yield without affecting maize yield,as surplus nitrate after wheat harvest was retained in the topsoil layers and available for the subsequent *** W2,annual yield was largest in the N2 *** risk of nitrate leaching increased in W2 when N application rate in wheat exceeded that of the N2 treatment,especially in the wet *** to W2N2,the W0N3 maintained 95.2%grain yield over two *** WPCwas higher in the W0 treatment than in the W2 ***,following limited total N rate,an appropriate fertilizer N transfer from maize to wheat season had the potential of a“triple winfor high annual yield,WPCand PFPN in a water-limited wheat–maize cropping system.