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对比研究了我国南方主要类型退化红壤的有机质含量状况及腐殖质的组成特征，并定位观测了施肥对退化红壤有机质的积累过程的影响。
The organic matter content and humus composition of the main types of degraded red soils in southern China were comparatively studied. The effects of fertilization on the accumulation of organic matter in degraded red soils were also investigated.