新疆阿拉尔地区土壤盐渍化特征

Soil Salinization Features in Aral Area,Xinjiang

阿拉尔地区是重要的农业生产基地,由于研究区盐渍化程度及分布情况认识不足,制约了研究区的农业发展。针对阿拉尔地区盐渍化土壤现状,借助统计学与野外实测数据相结合的方法,利用SPSS2. 0数据分析软件,对阿拉尔土壤盐渍化的空间分布特征及影响因子进行了研究。结果表明:阿拉尔地区盐渍化表聚强烈,盐渍化类型以硫酸盐型为主,不同深度的土壤盐渍化特征不同,0～0. 2m、0. 6～0. 8m土壤盐渍化以中等盐渍化为主,1. 4～1. 6m以轻度盐渍土为主,整体轻度盐渍土面积不断增加;盐渍化与地下水特征关系密切,地下水矿化度> 3g/L,对应盐渍化多为中度-重度盐渍化,地下水埋深1～3m,盐渍化多为中度-重度盐渍化。

The Aral area is an important agricultural production base. As a result of insufficient understanding on salinization degree and distribution in the study area, has restricted agricultural development. In allusion to salinized soil status quo in the area, with the help of statistics combined with field measured data, through SPSS2. 0 data analysis software has carried out study on soil salinization spatial distribution features and impacting factors. The result has shown that the salinization surface polymerization is strong, saliniza- tion is mainly sulfate type. Soil salinization has different features at different depths, within 0 - 0.2m, 0. 6- 0. 8m mainly medium salinizadon; 1.4- 1.6m mainly mild salinization, mild salinization area has steadily risen as a whole. Salinizadon has close relation- ship with groundwater features, when groundwater mineralization degree 〉 3g/l, corresponding salinization is mostly medium to heavy, groundwater buried depth 1- 3m, salinization mostly medium to heavy.