不同土壤类型土壤含盐量分布研究

目的]为了研究玛纳斯河流域3种主要土壤类型中含盐量分布情况。方法]采用烘干法，测定土壤可溶性含盐量。结果]3种土壤类型的盐分分布情况差异显著，中壤土含盐量较低，沙壤土、沙土的表层含盐量较高；3种土壤类型不同深度盐分变化趋势间差异很大，中壤土含盐量在20cm处最大，20cm以下土壤含盐量呈下降趋势；沙壤土含盐量在60cm处最大，60cm以下土壤呈下降趋势；沙土盐分在0～150cm土层处于增加趋势。结论]该研究可为该地区土壤盐渍化治理及发展趋势评价提供科学依据。

Research on Distribution of Soil Salt Content of Different Soil Types

Objective] The research aimed to study the distribution of soil salt content of three kinds of soil types in Manas river basin. Method] The content of soluble salt content was determined with drying method. Result] The difference of salinity distribution situation of three kinds of soil type was remarkable. Salt content of the loam was low, and salt content in the surface layer of the sandy soil was high. The difference of salinity change tendency of three kinds of soil types was also big,the content of loam salt in 20 cm layer was the biggest,and salt content in the 20 cm following layer showed drop tendency. The content of sandy soil in 60 cm layer was the biggest, and that of the 60 cm fol- lowing soil assumed drop tendency. The content of sandy soil in the 0 - 150 cm layer was in the increase tendency. Conclusion] The study provided a scientific basis for the management and the development trend of soil salinization in the area of evaluation.