陆浑灌区位于河南省西部浅山丘陵区,跨黄河、淮河两大流域,修建干渠251km,从嵩县境内的黄河支流“伊河”引水灌溉,范围涉及洛阳、郑州、平顶山3市的6个县(市),面积可控制6.73万 hm~2,同时还可解决灌区内4万多居住人口吃水困难问题。然而,近些年来,灌区可灌土地明显减少,实灌面积由上世纪90年代末的3.2万 hm~2下降至2002年普查统计的2.0万 hm~2,并且还有继续下滑之势。1 陆浑灌区可灌耕地减缩成因 Luhun Irrigation District is located in the hilly area of ​​shallow mountain in the west of Henan Province, crossing the Yellow River and Huaihe River. The main channel is 251km long and is irrigated by the Yellow River tributary “Yihe ” in Songxian County. The scope covers Luoyang, Zhengzhou and Pingdingshan 3 Counties (cities) with an area of ​​67,300 hm ~ 2 can be controlled. At the same time, it can also solve the problem of draft of more than 40,000 living population in the irrigated area. However, in recent years, the irrigated area has been significantly reduced. The actual irrigated area has dropped from 32,000 hm ~ 2 in the late 1990s to 20,000 hm ~ 2 in the 2002 census and has continued to decline. 1 Lu Hun irrigated area to reduce causes