Study on Water Use Efficiency Indicators in Winter Wheat Irrigation

摘要：

Three categories of winter wheat water use efficiency indicators in single leaf level, crop yield and economic production are synthetized. With the actual situation of the study site, WUE indicators measured by crop yield are chosen in the paper, and WUEi、 WUEa、 WUEET and WUEp0 at estuary of irrigation channel and water distribution point measured by crop yield are determined. The results show that the WUE indicators at water distribution point can reflect the actual situation of winter wheat water use for the whole irrigation area, while the WUE indicators at estuary of irrigation channel can mirror water use in fields. Under irrigation, rainfall, groundwater recharge information preparing completely, WUEET can be adopted. With incomplete or no groundwater information, WUEa at water distribution point can approximately substitute for WUEET at water distribution point. But WUEi、WUEa、 WUEET at estuary of irrigation channel and water distribution point cant be replaced by WUEPO respectively at any time.

关键词： Winter wheat Irrigation water use efficiency (WUEi) Effective rainfall water use efficiency (WUFp0) Field water use efficiency (WUEET) Estuary of irrigation channel Water distribution point

作者: WANG Jing YANG Jin-zhong

作者单位: National Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430072, China

会议类型: 国际会议

会议名称: 2008 International Conference on IAEA(2008农业信息化、自动化与电气化国际会议)

会议地点: 镇江

会议语种:英文

页码: 750-755

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）