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探讨了坡地赤红壤水分性能退化的特征、结果表明，与地带性自然植被下坡地赤红壤比较，次生植被或人工植被下坡地赤红壤水分性能变劣：表现在导水性降低，2h饱和渗水量明显减少，自然赤红壤比耕型赤红壤的减幅大；持水能力下降，在同样吸力下，土壤持水量较少；供水能力下降，在同样吸力段，表土释放的水量较少；亚表土在低吸力段释放水量较少。
The results showed that compared with the red soil in the downland of natural zonal vegetation, the water quality of the latosolic red soil in the secondary vegetation or artificial vegetation was deteriorated: the water conductivity decreased, the saturated water seepage quantity in 2h Obviously decreased, the decrease of natural red soil was more than that of tillable red soil, and the water holding capacity decreased. Under the same suction, the soil water content was less and the water supply capacity decreased. In the same suction section, Less water is released at low suction.