盐渍土的盐分来源：地下水运动的影响

The salt content in saline-alkali soil is mainly brought by the movement of groundwater. Therefore, in arid areas, the level and mineralization of groundwater directly affect the degree of soil salinization. The higher the groundwater level is, the easier it is for groundwater to rise to the surface through soil capillaries, resulting in more salt left in the surface soil due to evaporation. Especially when the mineralization of groundwater is high, soil salinization will be more severe.