The composition of exchangeablecation 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。
2
According to chemical composition, exchangeablecation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.