盐化问题是制约区域发展的重要因素之一。为了解决祖厉河流域盐化问题，利用相关分析法对流域内盐化水土的分布和形成原因进行了调查和分析。结果表明：流域内的水土盐化是相互影响、相互制约和相互转换的，呈现出较显著的对数关系，相关系数为0．8125。流域内水土的盐化分布具有显著的空间分异特征，盐分由地面垂直向下逐渐减少，由上游至下游、干流南岸至北岸逐渐增加。水质类型由上游的咸水演变成下游的盐水，土体类型由上游的弱盐化土发展到中下游的中盐化土。成土母质中0．5％～0．8％的易溶盐是流域盐化的主要盐分来源，干旱与半干旱区特殊的气候条件、岩土类型、地形和人类活动又加速了流域内的盐化进程。%The water and soil salinization is one of the important factors that restrict and influence the regional development. In order to solve the problem of the salinization of Zuli River basin,the distribution and salinization of the brine and salt soil in the basin were studied by the methods of correlation. The results show that the water and soil salinization of the Zuli River basin are mutual constraint,mutual influence and mutual trans-formation. There is extremely significant logarithmic relation between them,and the correlation coefficient is 0. 812 5. The distribution of the brine and salt soil has significant spatial differential features,where salt content increases gradually from upstream to downstream and the north bank of the river is more than that of the south bank. Longitudinal also shows a significant phenomenon that the salt is accumulated to the surface water and soil surface. Saline water in the river basin is from the brine water to salt water from upstream to downstream and the saline soil is also from weak salt saline soil to saline soil. The soluble salt is 0. 5% ~0. 8% of the soil-forming parent materials that is a key source of salt in the basin. The arid and semi-arid special climate condition,soil types,topography and human activities have speeded up the process of salinization of the basin.
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