水资源与水工程学报2017，Vol.28Issue(2)：244-248,5.DOI:10.11705/j.issn.1672-643X.2017.02.42
小型灌区灌溉水利用系数测定及影响因素研究
Research on the measurement and influence factors of irrigation water utilization coefficient in small-sized irrigation area
摘要
Abstract
The utilization coefficient of irrigation water were calculated by using the head-tail method,which was focused on 11 small-sized irrigation areas during 2013 and 2014 in Shanghai City.The impact laws and degree of different influence factors which affected utilization coefficient of irrigation water were investigated with the principal component analysis.The results showed that the utilization coefficient of irrigation water in 9 of 11 sampled irrigation areas were above 0.7,of which,the maximum was 0.861,which was significant higher than average level of the whole country.Besides,rice cultivation proportion,seepage-proofing canal lengths,the lining rate of canal and the area ratio of water-saving irrigation had greater impacts on the utilization coefficient of irrigation water,and seepage-proofing canal lengths,the lining rate of canal and the area ratio of water-saving irrigation had great positive contribution rates,while rice cultivation proportion have great negative contribution rate.The utilization coefficients of irrigation water could be increased by optimizing the cropping structure,carrying out water-saving irrigation project construction as before,and vigorously extending water-saving irrigation technology.关键词
灌溉水利用系数/影响因素/首尾法/主成分分析法/小型灌区Key words
utilization coefficient of irrigation water/influence factor/head-tail method/principal component analysis/small-sized irrigation area分类
农业科技引用本文复制引用
吴七斤,顾太义,王甫..小型灌区灌溉水利用系数测定及影响因素研究[J].水资源与水工程学报,2017,28(2):244-248,5.基金项目
国家自然科学基金项目(51609065、51309080) （51609065、51309080）
江苏省水利科技项目 （）
