渠道防渗与灌溉用水有效利用系数关系分析  

Relationship between canal lining and effective utilization coefficient of irrigated water

作　　者：高峰[1] 黄修桥[1] 王景雷[1] 李英能[1] 

机构地区：[1]水利部中国农业科学院农田灌溉研究所,新乡453003

出　　处：《中国水利》2009年第3期22-24,共3页China Water Resources

基　　金：水利部前期工作经费;水利部公益性行业科研专项经费项目(200701002)

摘　　要：分析了渠道防渗措施对灌溉用水有效利用系数的影响,两者总体上成正比关系;针对某一灌区采取何种措施才能更快地提高灌溉用水有效利用系数要作具体分析;针对不同的井渠结合灌区及不同的区域,应根据机井密度、地下水位、渠道引水量及当地降水量等因素进行综合分析来确定其适宜防渗率。The influence of canal lining to effective utilization coefficient of irrigated water is in direct proportion as a whole. The main influential factors of effective utilization coefficient of irrigated water are of varied kinds such as structural and managerial. Canal lining is not the only key measure for water conservation. Specific analysis is needed for examining what kinds of measures should be taken for the increase of coefficient. The determination of seepage prevention rate may be conducted by comprehensive investigation of density of tube well, groundwater level, water diversion from canal and local precipitation in different irrigation district of using both well and canals as well as conditions of different regions.

关 键 词：适宜渠道防渗率 灌溉用水有效利用系数 井渠结合灌区 节水改造 

分 类 号：S274[农业科学—农业水土工程]