摘要
桑干河灌区由于年久失修,水资源浪费严重,为提高灌区灌溉效益,对灌区的节水改造十分必要。本文针对桑干河灌区目前存在的问题,通过渠系节水改造工程后,灌溉水利用系数由0.384提高到0.522,年节水量1021.9万m3,完全满足向首都北京供水970万m3的节水目标,节水效益显著,可促进灌区农业的持续发展。
In the view of the existing problems i n Sangganhe irrigation district,th is paper presents a scheme of wa-ter -saving improvement for the canal system.After the scheme is impleme nted,the irrigation water utilization coef-ficient is increased from 0.384to 0.522,and the annual water -saving amo unt is 10129000m 3 ,which can fully reach the objective of supplying 9700000m 3 water to Beijing annually.Therefore,the water -saving benefit is ob-vious,and it can promote the sustain able development of the irrigation d istrict.
出处
《山西水利科技》
2003年第3期44-45,共2页
Shanxi Hydrotechnics
