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.
红壤长期施用单一化学肥料，土壤明显酸化，土壤交换性氢铝显著增加，作物生长变差，产量降低。
The soil became acid obviously, the exchangeable al in soil increased significantly, crop grew poorly and the yield decreased after applying sole chemical fertilizer for long term.
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