几种主要土壤中Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ和Ｓｍ含量分别为２７．０、４８．８、１５．３、２５．３和３９ｍｇ／ｋｇ。５种轻稀土元素占稀土总量的７５１％，说明供试土壤以含铈（Ｃｅ）等轻稀土元素为主。镧（Ｌａ）系元素含量随原子量的增大而有规律递减。岩石和土壤中稀土元素的全量和盐浸稀土元素含量有极显著的相关关系。土壤稀土活化率平均为８３５％，而岩石中只有０５０％，稀土元素全量、盐浸稀土元素含量或稀土活化率都是棕壤＞褐土＞砂姜黑土＞潮土 The contents of La, Ce, Pr, Nd and Sm in several major soils were 27.0, 48.8, 15.3, 25.3 and 39 mg / kg, respectively. Five kinds of light rare earth elements accounted for 75.1% of the total amount of rare earth, indicating that the test soil with cerium (Ce) and other light rare earth elements based. Lanthanum (La) elemental content decreases regularly with increasing atomic weight. There is a significant correlation between the total amount of rare earth elements in rock and soil and the content of rare earth elements in salt leaching. The average REE of the soil is 835%, while that of the rock is only 050%. The contents of all the REEs, the contents of rare earth elements and the activation rates of REEs are brown earth> cinnamon soil> saprolite black soil>