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1 灌区概况信阳市南湾灌区地处淮河流域上游,跨越信阳市西北部的广袤地带,灌溉范围涉及信阳市平桥区、罗山县、息县、上天梯非金属矿管理区和驻马店市正阳县计24个乡镇,受益人口76万人,是河南省大型灌区之一。灌区兴建于1959年,1960年部分开灌,1966年全部建成通水。从1960年开灌至2001年底,灌区累计供水总量为90.9亿m~3,累计灌溉面积150万hm~2,增产粮食47亿kg,为当地工农业生产发展作出了巨大贡献。
1 Introduction of Irrigation District The Nanwan Irrigation District of Xinyang City is located in the upper reaches of the Huaihe River Basin and extends over the vast area in the northwestern part of Xinyang City. The irrigation range covers Pingqiao District, Luoshan County, Xixian County, Shangtianti Non-Metallic Mine Management Area and Zhumadian City Counting 24 townships in Yang County, benefiting from a population of 760,000, it is one of the major irrigation districts in Henan Province. Irrigation area was built in 1959, some open irrigation in 1960, 1966 all built into the water. From the opening of irrigation in 1960 to the end of 2001, the accumulated total water supply in the irrigation area was 9.09 billion m 3, with an accumulated irrigated area of 1.5 million hm 2 and an additional grain output of 4.7 billion kg, making a tremendous contribution to the local industrial and agricultural production.