土壤的渗透性能是土壤重要的水分物理性质之一。它与土壤质地、结构、孔隙度、通气度、土壤湿度、温度、有机质含量、盐分含量等有关。渗透性能良好的土壤,在一定的降雨强度和灌溉定额条件下,水分可完全进入土壤贮存起来或变为土内径流;而渗透性差的土壤,则易形成地表泾流。定量地测定渗透性与其土壤物理性质的关系,不仅对解决造林、施肥、灌溉、土壤改良、水利等方面的实际问题 Soil permeability is one of the most important water physical properties of soils. It is related to soil texture, structure, porosity, air permeability, soil moisture, temperature, organic matter content and salt content. Under the conditions of certain rainfall intensity and irrigation quota, the soil with good permeability can be fully stored in the soil or turned into soil runoff. However, the soil with poor permeability can easily form the surface runoff. The quantitative determination of the relationship between permeability and soil physical properties not only provides practical solutions to the problems of afforestation, fertilization, irrigation, soil improvement and water conservancy