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.
交换性阳离子组成、养分全量及速效含量可作为评价红粘土红壤化学肥力演化的指标。
According to chemical composition, exchangeable cation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.
根据宣城沸石化学成分、可交换阳离子组成和热处理晶体结构演化，判断宣城沸石为富钙斜发沸石，具有低热稳定性的特点。
According to chemical composition, exchangeable cation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.
根据宣城沸石化学成分、可交换阳离子组成和热处理晶体结构演化，判断宣城沸石为富钙斜发沸石，具有低热稳定性的特点。
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