Residue separate horizon can effectively prevent groundwater and salt up in high watertable saline area.
秸秆隔层能有效地阻隔水盐上行，防止耕层盐化，在高水位盐渍化区可采用此种方法。
2
The multicyclic tectonic movement, multiperiodic raising and falling of lake watertable have provided the basis of materials for the forming of each kind of lithologic gas pool.
指出多旋回的构造运动，多期湖平面升降，为多类型岩性圈闭的形成奠定了物质基础；
3
Based on the natural flow character of groundwater and the principle of flow simulation, a digital watertable model was built by the method of inverse distance weights in the GIS environment.