【摘要】 人民胜利渠灌区渠井结合节水灌溉的斗渠、农渠全部采用了混凝土U形渠道,田间灌水工程中推广短畦窄垄,达到了节水的目的。渠井结合工程布局方案包括机井合理密度、渠井位置、田面工程规格、配套排水工程布设等。以翟坡镇灌溉区为典型,进行了渠井结合工程的效益分析:666.7 hm2耕地工程建设需要投资105.64万元,每年可创经济效益74.14万元,还本年限为1.76 a,经济效益显著;渠井结合节水灌溉的田间工程措施还可调控地下水位,提高水的利用率,社会效益显著。更多还原

【Abstract】 The aim of irrigation water saving are achieved by the adoption of U type canal for tertiary canals and the application of border-irrigation for field irrigation measures in the combination of canal and well irrigation in People’s Victory Channel irrigation area.The layout plan of canal and well combination includes the reasonable well density,the relative location between canals and wells,field irrigation engineering specification,drainage arrangement,etc.As an example,the assessment of the project benefit and economic benefit of an irrigation area in Zhaipo Town is carried out.The results show that the cost of engineering construction for 666.7 hm2 arable land is 1.056 4 million Yuan,the annual economic benefit is 0.741 4 million Yuan,the investment payback period is 1.76 year and all these means that the economic benefit is obvious.The field engineering measures of water saving irrigation by the combination of canal and well irrigation can also control groundwater level,increase water using efficiency and has significant social benefits.更多还原