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一九八三年,关中地区配套机井122199眼,井灌面积747.6万亩,地下水开采量15.78亿立米,其中:农业6.90亿立米,工业及生活用水8.88亿立米。全区年平均降水890.3毫米,比多年平均596毫米多294.3毫米;汛期比往年延长,集中于七——十月,占年降水量的65%以上。由于降水丰富,增加了地下水的补给,估算约35亿立米,加上其它因素影响,八三
In 1983, there were 122,199 auxiliary wells in Guanzhong area, with a well-irrigation area of 7.476 million mu and a groundwater extraction volume of 1.578 billion cubic meters, of which 690 million cubic meters were agricultural and 888 million cubic meters were industrial and domestic water. The average annual rainfall of 890.3 mm in the region is 294.3 mm more than the average of 596 mm in many years. The flood season is prolonged as compared with previous years, focusing on July-October, accounting for more than 65% of the annual rainfall. As a result of abundant rainfall and increased recharge of groundwater, it is estimated that about 3.5 billion cubic meters. Coupled with other factors,