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农田灌溉是用水大户,当前农田灌溉用水量约占全国总用水量的70%。研究农田灌溉的节水问题,对水资源的合理配置有重要意义。世界银行提出“真实”节水和ET管理,是改进农田灌溉管理,合理配置水资源的先进方法。本文基于节水灌溉项目管理的角度,将世界银行贷款节水灌溉项目区辽中县子项目区五年实施结果整理、分析。从地下水灌溉抽取量、地下水位变化、灌溉效率、灌溉定额、农业节水措施、项目区ET平均、项目区ET综合与降雨量、水分生产率等方面评价“真实”节水量。
Farmland irrigation is a big user of water, and current farmland irrigation water accounts for about 70% of the national total. Studying the water-saving problem of farmland irrigation is of great significance to the rational allocation of water resources. The World Bank proposed “Real ” water saving and ET management, which is an advanced method to improve farmland irrigation management and rationally allocate water resources. Based on the perspective of water-saving irrigation project management, the paper summarizes and analyzes the five-year implementation results of the subproject area of Liaozhong County in World Bank Loan Water Saving Irrigation Project. Evaluate the “true” water saving from the aspects of groundwater extraction, groundwater level change, irrigation efficiency, irrigation quota, agricultural water saving measures, ET average in project area, ET comprehensiveness and rainfall in project area, and water productivity.