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本文对几种主要土壤的水分特征曲线进行测定，并探讨了土壤水分有效性等问题，得出本流域土壤的持水性能从淡栗褐土、潮土、砂土到红土依次降低的结论。
In this paper, the water characteristic curves of several main soils were measured, and the problems of soil water availability were also discussed. The conclusions were drawn that the water holding capacity of soils in the watershed decreased from pale brown cinnamon soil, alluvial soil and sandy soil to red soil in turn.