孔隙水是我国干旱、半干旱地区工农业供水和城市供水的重要水源。北方地区地下水资源中以第四系松散岩层中的地下水资源所占比重最大,其中又以浅层地下水居多,约达孔隙水资源的80％—90％。从大区域来看,用于大面积农田供水的地下水开采量所占的比重最大,可占总开采量的80％以上。这充分说明浅层地下水在农田供水中的重要作用。因而研究平原地区浅层地下水 Pore ​​water is an important water source for industrial and agricultural water supply and urban water supply in the arid and semi-arid areas of our country. Among the groundwater resources in the north, the groundwater resources in Quaternary loose rock strata account for the largest proportion, of which the shallow groundwater mostly accounts for about 80% to 90% of the pore water resources. From a large area perspective, groundwater exploitation for large-scale farmland water supply accounts for the largest proportion, accounting for more than 80% of the total extraction. This fully demonstrates the important role of shallow groundwater in farmland water supply. Thus study the shallow groundwater plain