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一、基本情况河南省三义寨引黄灌区是1958年兴建的大型灌区,灌区当时涉及河南、山东两省的开封、商丘及菏泽3个地区的18个县(市),渠首闸设计过水能力为520m~3/s,设计灌溉面积132万hm~2,在工程尚未形成灌排体系的情况下,于1958年明15日放水蓄灌,引起地下水位普遍升高,导致大面积次生盐碱化,被迫于1961年停灌。后经1974年和1990年2次改造后,渠首闸目前过水能力为150m~3/s。灌区缩为河南省的豫东地区。河南省计委以豫计经规[1992]1943号文批复:建设新三义寨引黄灌溉工程,总干渠设计流量为107m~3/s,灌溉面积22．67万hm~2。灌区包括开封、商丘两市的9个县(区),总土地面积43．43万hm~2,总耕地面积27．00万hm~2。
First, the basic situation Sanyi Village, Henan Province, the Yellow River irrigation area was built in 1958 large-scale irrigation area, irrigation area was involved in Henan, Shandong provinces Kaifeng, Shangqiu and Heze three districts 18 counties (cities), the first gate design Water capacity of 520m ~ 3 / s, design irrigation area of 1.32 million hm ~ 2, in the project has not yet formed irrigation and drainage system in the case of the 15th in 1958 to release water and storage irrigation, causing a general rise in groundwater levels, resulting in a large area times Salinization, was forced to stop irrigation in 1961. After the second transformation in 1974 and 1990, the initial water gate capacity was 150m 3 / s. Irrigated area reduced to Henan Province, Henan Province. Planning Commission of Henan Province to Yu gauge [1919] No. 1943 reply: the construction of the new Sanyi Village Yellow River irrigation project, the main canal design flow of 107m ~ 3 / s, irrigation area of 226,700 hm ~ 2. The irrigated areas include 9 counties (districts) in Kaifeng and Shangqiu with a total land area of 434,300 hm 2 and a total cultivated land area of 270,000 hm 2.