修正灌溉水利用效率指标体系的研究

Modified index system for utilization efficiency of irrigation water

建立科学的灌溉水利用效率指标体系有助于准确评价灌溉水的利用效率,从而为节水灌溉项目决策及灌溉管理提供科学的依据。本文分析了目前灌溉水利用效率指标体系存在的问题,并作了系统的修正,提出了由渠道水利用效率、渠系水利用效率、田间水利用效率、作物水利用效率和灌区灌溉水利用效率组成的灌溉水利用效率指标体系,并分别给出了这些指标的定义及计算方法。

The shortcoming of the current index system for water use efficiency of irrigation region is analyzed. On this basis, a modified index system is proposed. The new system is consisted of five indexes including water conveyance efficiency of canal,water conveyance efficiency of canal system,water application efficiency,consumptive use efficiency of plant and overall water use efficiency of irrigation region.The definitions of these indexes are accurately defined and the methods for calculating these indexes are given.