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花园口引黄灌区始建于1955年,1956年投入使用。设计流量46m~3/S,灌溉面积1.61万hm~2,实灌面积1.13万hm~2。通过长期的引黄灌溉改良土壤,发展引黄种稻而形成一稻一麦的稻麦轮作区,据1995年灌区调查情况看,灌区开灌前平均产量1383Kg/hm~2,1995年灌区平均产量为11250Kg/hm~2,净增产9867Kg,比开灌前提高7.13倍。但由于水费不到位,行政管理体制的不健全等诸多因素,灌区黄灌面积逐年衰减,庙李镇、柳林镇于1993年退出引黄灌溉,1995年祭城镇也不
Yellow River Irrigation District irrigation district was founded in 1955, put into use in 1956. Design flow 46m ~ 3 / S, irrigated area of 16100 hm ~ 2, real irrigation area of 11300 hm ~ 2. According to the survey of irrigated areas in 1995, the average yield of irrigated area before irrigation was 1383Kg / hm ~ 2. In 1995, the average irrigated area Yield 11250Kg / hm ~ 2, net yield 9867Kg, 7.13 times higher than before irrigation. However, owing to the inadequate water charges and the imperfect administrative system, the area of irrigated area has been declining year by year. Miaoli Town and Liulin Town quit irrigating the Yellow River in 1993,