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本项研究使用作物系数法估算华北地区372个县站的冬小麦需水量并绘出全华北地区的冬小麦需水量等值线图.华北地区冬小麦需水量地理分布规律是从南向北逐渐升高.300—400kg/亩产量水平的冬小麦需水量,在全区变动在400—525mm范围,最低值区在河南南部,高值区出现在渤海湾一带.
In this study, the crop coefficient method was used to estimate the winter wheat water requirement in 372 counties of North China and draw the contour map of winter wheat water demand in North China. The geographical distribution of winter wheat water demand in North China increased gradually from south to north. The water requirement of winter wheat with 300-400kg / mu production level fluctuated in the range of 400-525mm, with the lowest value in southern Henan and high value in Bohai Bay.