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建国以来,我区水库工程从无到有,从小到大得到迅速发展.截止1989年底统计,共建成大、中、小型水库337座,总库容达4.36亿 m~3,有效库容2.81亿 m~3,设施灌溉面积124.2万亩,有效灌溉面积为103.41万亩。小(二)型水库299座,占水库总数的88.7%,其有效库容为0.81亿 m~3,占总有效库容约28.7%,有效灌溉面积为28.06万亩,占全区水库有效灌溉面积的27.1%,占全区总有效灌溉面积186.65万亩的15%,养鱼水面达1.2万亩。小(二)型水库数量多、分布广,对汉中地区粮食产量的增长,起到了不可低估的作用,见表1.
Since the founding of the People’s Republic of China, a total of 337 large, medium and small-sized reservoirs have been built up by the end of 1989 with total capacity of 436 million m 3 and effective storage capacity of 281 million m ~ 3, Irrigation area of 1,242,000 mu of facilities, effective irrigation area of 1,041,400 mu. There are 299 small reservoirs, accounting for 88.7% of the total reservoirs, with an effective storage capacity of 81 million m3, accounting for 28.7% of the total effective storage area and an effective irrigated area of 280,600 mu, accounting for an area of effective irrigated area of the reservoir 27.1% of the total irrigated area, accounting for 15% of the total effective irrigation area of 186.65 million mu and the water surface of fish farming reaching 12000 mu. The number of small (two) type reservoirs is large and distributed widely, which plays a role that can not be underestimated in the growth of grain output in Hanzhong area (Table 1).