【摘 要】
：
红壤开垦后,由于生物循环方式的改变,不是原来那样自然循环状态,而是加进了人为的因素,红壤肥力发生急剧的变化,既可向肥力逐渐上升的方向变化,也可向肥力逐渐退化方向变化
【机 构】
：
云南省农科院士肥所,云南省农科院士肥所,云南省农科院士肥所,云南省农科院士肥所,
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红壤开垦后,由于生物循环方式的改变,不是原来那样自然循环状态,而是加进了人为的因素,红壤肥力发生急剧的变化,既可向肥力逐渐上升的方向变化,也可向肥力逐渐退化方向变化。究其原因,垦植后的红壤,由于生态环境的改变,每年进入土壤中凋落物量减少,土壤有机质一般比较缺乏,品质
After the reclamation of red soil, due to the change of the biological circulation mode, instead of the natural circulation as before, human factors are added to make the fertility of red soil change drastically, which can change to the direction of increasing fertility or to gradually degrade fertility Change of direction. The reason, red soil after cultivation, due to changes in the ecological environment, annual litter into the soil to reduce the amount of soil organic matter is generally lacking, quality
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