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一、灌区概况冯家山水库灌区位于我省关中西部,灌溉凤翔、宝鸡、岐山、扶风等七县原上163万亩耕地。自1974年水库投灌以来,灌区地下水位上升,据实测资料,仅79至86年的7年间,全灌区平均上升4.85m,年平均0.69m,上升区(ΔH>0.5m)面积940km~2,占全灌区总面积的92％,其中上升值大于3m的面积约400km~2,占上升区的42％。
I. Introduction of irrigation area Fengjiashan Reservoir Irrigation District is located in the western part of Guanzhong in our province and irrigated 163 million mu of cultivated land in seven counties including Fengxiang, Baoji, Qishan and Fufeng. The water table of irrigated area has risen since the reservoir was irrigated in 1974. According to the measured data, the total irrigated area increased by 4.85m on average in the seven years from 79 to 86, with an average annual rate of 0.69m and an area of 940km ~ 2 in the ascending area (ΔH> 0.5m) , Accounting for 92% of the total area of the whole irrigation area. The area with an increment of more than 3m is about 400km ~ 2, accounting for 42% of the ascending area.