The relationship was analysised between organic matter, soil granular composition and cation exchange capacity(CEC) in Qinghai major soil types.
通过对青海主要土壤类型剖面的有机质、机械组成、阳离子交换量三者之间的关系分析。
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According to chemical composition, exchangeable cation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.
The composition of exchangeable cation and the soil nutrient content can be used as the indexes to evaluate soil chemical fertility evolution, especially the former is more important.