本文研究了四川省内6种紫色岩及其土壤中硅、铁、锰、铜、锌等几种元素的含量变化规律,阐明了上述元素在成岩与成土过程中分散与富集的特点,同时指出了上述元素全量及有效性含量的不一致性,提出了土壤地球化学分类指标及建议,可为合理施用微量元素肥料提供科学依据。 In this paper, the variation of the contents of silicon, iron, manganese, copper, zinc and other elements in six purple rocks and their soils in Sichuan Province were studied. The characteristics of the elements dispersed and enriched during diagenesis and soil formation were elucidated. At the same time, it points out the inconsistency of the total amount and the effective content of the above elements and puts forward the index and suggestion of soil geochemical classification, which can provide a scientific basis for the rational application of trace element fertilizers.