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土壤性质的空间变异性对于土壤改良和作物高产都是重要的。本文就土壤饱和水力传导度的空间变异性、孔性数值与饱和水力传导度的相关分析和用大孔隙度标定饱和水力传导度的空间变异性进行了研究。研究结果表明土壤饱和水力传导度的半方差图体现了该土性的空间结构;土壤饱和水力传导度主要通过大孔隙度来表征,二者的关系可以用直线函数和幂函数的关系式来表示;可以从大孔隙度的分布导出和表征饱和水力传导度标定因子的频率分布,作为他和水力传导度的空间分布的度量。
Spatial variability of soil properties is important for both soil improvement and crop productivity. In this paper, the spatial variability of soil saturated hydraulic conductivity, correlation analysis between porosity and saturated hydraulic conductivity and spatial variability of saturated hydraulic conductivity using macroporosity were studied. The results show that the semi-variogram of soil saturated hydraulic conductivity reflects the spatial structure of the soil; saturated hydraulic conductivity of soil is mainly characterized by macroporosity, the relationship between the two can be expressed by the relationship between linear function and power function The frequency distribution of calibration factors of saturated hydraulic conductivity can be derived and characterized from the distribution of macroporosity as a measure of the spatial distribution of hertz and hydraulic conductivity.