1·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.
该系统在面向对象建模、模型前处理、参数设置、模型后处理等方面突破了传统建模方式，实现了GIS功能与地下水数值模型的完全整合。