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。
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.
施用有机肥料，明显降低土壤交换性氢铝含量，增加土壤养分，保持作物的稳产和高产。
Applying organic chemical fertilizer decreased significantly exchangeable al in soil, increased soil nutrients content, and kept the high and stable yield of crops.
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