众所周知 ,土壤盐渍化的主要因素有 3种 :1土壤母质或地下水中含盐 ,2地下水位高 ,3蒸发量大。以往国内外关于盐渍土改良的传统观念认为 :土壤母质或地下水中含盐和蒸发量大 2个因素均属自然条件 ,人类无法控制和改变 ,而地下水位高低 ,可以通过各种人为措施加以调控 ,因此无论 As we all know, there are three main factors of soil salinization: 1 soil parent material or groundwater salt, 2 high groundwater level, 3 large evaporation. In the past, the traditional concept of saline soil improvement at home and abroad held that the two factors, salt and evaporation in the soil parent material or groundwater, are natural conditions and can not be controlled or changed by human beings. However, the groundwater level can be increased by various man-made measures Regulated, so no matter