中文摘要：

以便研究在西方的吉林的 Zhenlai 设计土壤的地质的性质，特别土壤的 dispersivity，作者执行了基本物理化学的测试和 dispersivity 鉴定测试。结果证明土壤的 dispersivity 在 0-30 厘米(表面土壤) 以内随深度的增加增加；它作为 30-100 厘米的在内的深度增加减少。而且， dispersivity 索引的统计分析和 DP 是确实线性的物理化学的 propertity 索引表演与全部的可溶的盐内容，钠离子内容， ESP， pH 和有机物内容相关。同时，它是否定地线性的与泥土内容，和线性关系相关更好。通过土壤样品的分散机制的学习，钠 montmorillonite，可交换的钠的更高的百分比和高 pH 是为在西方的吉林的土壤的分散的主要原因，这能被结束。

英文摘要：

In order to research engineering geological properties of the soil in Zhenlai of western Jilin, especially the dispersivity of soil, the authors carried out the basic physicocbemical test and dispersivity identification test. The results show that the dispersivity of the soil increases with the increase of depth within 0-30 cm （surface soil） ; it decreases as the depth increases within in 30-100 cm. Furthermore, the statistical analysis of the dispersivity indexes and physicochemical propertity indexes show that the DP is positively linear correlated with total soluble salt content, sodium ion content, ESP, pH and organic matter content. Meanwhile, it is negatively linear correlated with clay content, and the linear relationship is better. Through the study of the dispersion mechanism of soil samples, it can be concluded that sodium montmorillonite, higher percentage of exchangeable sodium and high pH are the main reasons for the dispersion of soils in western Jilin.