n. succession
misc. crop rotation
农民在耕地上轮栽农作物。
得出结果:26年生杉阔轮栽模式土壤有机质和全N含量增加.土壤生化活性加强.土壤速效养分供应量增强;
The results indicated that the soil organic matter and total N of 26-year-old PBCA stand increased. the activities of soil biochemistry strengthened. the amount of available nutrient supply enhanced.
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