贵州遵义地区表层土壤微量元素均匀化现象及其农业地质环境效应

利用1：50000遵义市、遵义县2幅区域土壤地球化学调查成果，对该区土壤中环境微量元素分布特征及地球化学异常作了分析，认为岩石风化形成的土壤微量元素含量受控于母岩，但表层土壤长期经受相同的风化作用后，其土壤微量元素具有相似的特征，出现土壤微量元素总量均匀化现象，说明土壤中元素经过长期风化后，各元素在不同区域土壤中的含量基本相同，出现均匀化现象，依据这个特征可判断土壤的风化程度。

Homogeneity Phenomenon of Trace Elements in the Surface Soil in Zunyi Area of Guizhou and Its Agro-geological Environment Effect

On the basis of the survey results of 1：50 000 soil geochemistry in Zunyi City and Zunyi County, the distribution characteristics of environmental trace elements and geochemistry abnormity in this region were analyzed. It was thought that the content of trace elements in soil formed by rock weathering was controlled by host rocks. After the surface soil suffered from the same weathering effect for the long - term,the trace elements in soil had the similar characteristics and the homogeneity phenomenon appeared in the total content of trace elements in soil. All of these indicated that each element in different regions of soil after weathering for a long term had same content and the homogeneity phenomenon appeared. Therefore,the weathering degree of soil can be judged according to the characteristics.