850农场地下水资源可持续开采利用研究

850农场是三江平原地下水开采强度最大农场之一,井灌面积占平原面积57.7%,现地下水埋深约5 m,处理想埋深中,地下水用量约405 m^3/hm^2·a,产量还略高于本场渠灌稻。本地区井灌面积达2.07×104hm^2,只要在节水灌溉上下功夫,可达采补平衡。若在雨洪资源化上下功夫,“西水东调”和建河滩“漏水库”,还可发展水田,水田比例由现0.577上升到0.60以上,故此850农场地下水可持续开采利用。

Research on Sustainable Exploitation Practice of Groundwater on 850 Farm

850 Farm is one of the farms on which the exploitation intensity of ground water resource is the highest. On 850 Farm, the area of well-irrigated farm land accounts for 57. 7% of plain, the present buried depth is about 5m which is still the ideal buried depth, ground water consumption is about 405 m^3/hm^2·a, and the yield of well-irrigated rice is slightly more than canal-irrigated rice. In this area, the well-irrigated farm land has reached 2. 07×10^4/hm^2 , so, only if we make more effort to saving water, the balance of mining and supplementing can be realized. If we make an effort in reclaiming rainfall and flood, diverting water from the west to the east and constructing leaking reservoir on river bank, the proportion of peddy field can be add up from 57.7% to 60%, so,the ground water exploitation is sustainable on 850 Farm.