灌溉排水学报2011，Vol.30Issue(3)：6-11,6.
海河流域冬小麦水分生产率特征分析
Characteristics of Water Use Efficiency of Winter Wheat on Haihe Basin
摘要
Abstract
The paper analyzes the spatial distribution and the changing regularity of water use efficiency (WUE) of winter wheat on Haihe basin with the investigating data from the typical irrigation regions. The chosen water use efficiency indicators include total farmland water supply water use efficiency (WUE,) and irrigation water use efficiency (WUE,). It shows: the WUE, is 1. 50 kg/m3 at farmland scale and 0. 97 kg/m3 at irrigation region scale, while WUE-, achieves 2. 21 kg/m3 and 1. 24 kg/m3 at relevant scales. In general WUE of Haihe basin is at relatively high level compared with other regions in China. The spatial distribution of WUE is higher in the south part and lower in the north. In current conditions, the average yield of winter wheat reaches 6 075 kg/hm2. When increasing the amount of irrigation, average yield grows little but WUE gets evidently decreased. Therefore the total farmland water supply of winter wheat in Haihe basin can be appropriately reduced to achieve high WUE of winter wheat as well as receive more reasonable allocation of regional water resources.关键词
海河流域；冬小麦；农田总供水水分生产率；灌溉水分生产率Key words
Haihe basin/ winter wheat/ total farmland water supply water use efficiency (WUE,)/ irrigation water use efficiency (WUE/)分类
农业科技引用本文复制引用
杨迎,伍靖伟,杨金忠..海河流域冬小麦水分生产率特征分析[J].灌溉排水学报,2011,30(3):6-11,6.基金项目
国家973计划项目(2010CB428802)：国家自然科学基金项目(51079101) （2010CB428802）
