机井是我县灌溉的主要水利设施和农业增产的保障。由于近几年的持续干旱,地下水开采量远远超过补给量,引起了地下水位的逐年下降,水位埋深已由1979年的2.50米降至1984年底的7.95米,地下水开采日趋困难,机井出水量显著减少,再加上缺乏科学管理,机井装置存在许多技术问题,致使 Well is my county irrigation major water conservancy facilities and agricultural stimulation. Due to the continuous droughts in recent years, the amount of groundwater exploitation far exceeds the recharge rate, causing the water table to decline year by year. The water table depth has dropped from 2.50 meters in 1979 to 7.95 meters at the end of 1984, making exploitation of groundwater increasingly difficult. A significant reduction in water volume, coupled with the lack of scientific management, poses a number of technical problems with the well arrangement