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

表3 冬小麦籽粒产量、耗水量、水分利用效率之间的相关分析

Table 3 Correlation coefficient among grain yield, water consumption and water use efficiency

指标 Index 相关系数Correlation coefficient P值 P-value 籽粒产量 Grain yield 土壤耗水量 Soil water consumption 总耗水量 Total water consumption 籽粒产量 Grain yield 土壤耗水量 Soil water consumption 总耗水量 Total water consumption 土壤耗水量 Soil water consumption 0.570 0.004 总耗水量 Total water consumption 0.447 -0.120 0.028 0.576 水分利用效率 Water use efficiency 0.748 0.842 -0.528 0.000 0.000 0.032