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本文对雄县试区试验田的土壤特性空间变异性进行经典统计分析，并利用地质统计学半方差分析法定量描述土壤特性的空间相关结构，然后使用Ｋｒｉｇｉｎｇ最优内插估值法得到了田间土壤特性参数的空间分布等值图。分析结果表明，该试验田０～１００ｃｍ土壤范围内的平均含水量不仅在整个空间分布上而且在纵横曲型剖面上都呈现出弱变异性，空间相关结构显著，相关距离约６０～８０ｍ。采用上述结论和等值图不但能减少样本采样的数量和密度，还能根据田间含水量的空间分布特征合理布点采样，实施土壤墒情的科学监测。
In this paper, the statistical analysis of spatial variability of soil properties in the pilot area of Xiongxian County was carried out, and the spatial correlation of soil properties was quantitatively described by using geostatistical semi-variance analysis. Then Kriging’s optimal interpolation method was used to obtain the field soil Spatial distribution isometric map of characteristic parameters. The results show that the average water content in the 0-100 cm soil layer in the experimental area shows weak variability not only in the whole spatial distribution but also in the vertical and horizontal curve sections with significant spatial correlation with a relative distance of about 60-80 m. Adopting the above conclusion and the equivalent graph can not only reduce the number and density of sample samples, but also can reasonably arrange sampling according to the spatial distribution characteristics of field moisture content and implement scientific monitoring of soil moisture content.