Yield sustainability of winter wheat under three limited-irrigation schemes based on a 28-year field experiment

作     者：Yanmei Gao Meng Zhang Zhimin Wang Yinghua Zhang Yanmei Gao;Meng Zhang;Zhimin Wang;Yinghua Zhang

作者机构：College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China School of Life ScienceShanxi Normal UniversityTaiyuan 030031ShanxiChina Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-quality and Efficiency in Loess PlateauShanxi Agricultural UniversityTaigu 030801ShanxiChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2022年第10卷第6期

页      面：1774-1783页

核心收录：

学科分类：082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0901[农学-作物学] 

基　　金：supported by the National Natural Science Foundation of China(31871563) China Agriculture Research System of MOF and MARA(CARS-3) Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-quality and Efficiency in Loess Plateau(SBGJXTZX-44) 

主　　题：Yield Sustainability Cultivars Climate change Phenology 

摘      要：Sustainable intensification is an agricultural development direction ***,little is known about the yield sustainability of winter wheat(Triticum aestivum L.)under limited irrigation schemes on the North China Plain(NCP).A 28-year field experiment from 1991 to 2018 at Wuqiao Experimental Station was used to characterize long-term yield,evapotranspiration(ET),and water use efficiency(WUE)trends under three irrigation treatments(W1,irrigation just before sowing;W2,irrigation before sowing and at jointing stage;W3,irrigation before sowing,at jointing stage,and at anthesis).Yield gaps and the effects of genetic improvement,climate change,and climate variables on wheat yield and key phenological stages were estimated using the Agricultural Production Systems Simulator(APSIM)*** yield and WUE of winter wheat increased during the 28 years under the three irrigation treatments,and the upward trend of WUE followed a saturation curve *** increased *** results showed that genetic improvement dramatically prolonged the phenological stages of vegetative growth period and contributed to yield increase by 0.03%-15.6%.The rapid increase in yield with lower water use was associated mainly with an increase in biomass with genetic improvement and partly with an increase in harvest index.A curvilinear relationship between WUE and yield emphasized the importance of obtaining high yields for high *** yield gaps between potential yield and yield under W1 treatment increased from 1991 to 2018 but were relatively constant for the W2 and W3 *** atmospheric CO_(2) concentration offset the negative effects of temperature increase on yield,leading to minor(-2.3%to 0.3%)changes in yield under climate ***,genetic improvement played a dominant role in yield increase,and limited-irrigation schemes(W2 and W3)can increase wheat yield and promote sustainability of crop production on the NCP.