土壤在单位时间内所通过的水量（mm/s）称为导水率，它与土壤的渗透系数是成正相关的。
土壤大孔隙和土壤饱和导水率深度增加呈减小的趋势，并且变异性和复杂性很大。
The macropore and saturated hydraulic conductivity have increase with the increase of altitude and have great variability and complexity.
当土壤水吸力增大到一定值时，中间土层的土壤非饱和导水率反而大于底土层和表土层。
While the soil water suctions increased to some values, the unsaturated hydraulic conductivities in middle soil layers were higher than those in topsoil layers.
同一土壤随含水量增大，土壤水分通量和导水率增加。
Water flux and hydraulic conductivity increased with an increase in water contents.
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