华北冬小麦开花期补灌的增产效应及其影响因素

张经廷,吕丽华,董志强,张丽华,姚艳荣,申海平,姚海坡,贾秀领

Yield-increasing effect of supplementary irrigation at winter wheat flowering and its influencing factors based on water and nitrogen coupling in north China

Jing-Ting ZHANG,Li-Hua LYU,Zhi-Qiang DONG,Li-Hua ZHANG,Yan-Rong YAO,Hai-Ping SHEN,Hai-Po YAO,Xiu-Ling JIA

图1 冬小麦开花期补灌增产率与播前2 m土体贮水量的关系

Fig. 1 Relationship between the yield-increasing ratio of supplementary irrigation at flowering stage of winter wheat and the water storage in 2 m soil body before sowing