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在小区面积为7．5m×7．5m的冬小麦农田，用烘干法和时域反射仪分别测定了表层0—15cm土壤重量含水量（θg）和体积含水量（θv），并用θv／θg求得土壤的容重（ρ）。小区内测定网格单元为0．5m×0．5m。根据测定结果，用常规统计方法计算了均值、平均差、标准差、变异系数等传统统计特征值，并指出了用该方法表示土壤特性引起的困惑。在此基础上，将分形理论与地统计学原理相结合，计算了θg、θv．ρ的分形维数，分别为1．58—1．75、1．67—1．75、1．77—1．83。研究结果表明，土壤并非具有理想分形特征的介质，它只是在一定的空间尺度内才具有分形特征。
In winter wheat farmland with a plot area of 7.5m × 7.5m, the soil water content (θg) and volumetric water content (θv) of 0-15cm soil layer were measured by the drying method and time domain reflectometer, Find the soil bulk density (ρ). Intra-cell measurement grid unit is 0.5m × 0.5m. According to the measurement results, traditional statistical methods such as mean value, mean difference, standard deviation, coefficient of variation and other traditional statistical eigenvalues were calculated and the confusion caused by the soil characteristics was pointed out. On this basis, the fractal theory and geostatistics combined, calculated θg, θv. ρ fractal dimension, respectively, 1.58-1.75,1.67-1.75,1.77-1.83. The results show that soil is not a medium with ideal fractal characteristics, but it has fractal characteristics only within a certain spatial scale.