依据江西省第二次土壤普查资料，以侵蚀 - 生产力评价模型（ EPIC ）中的 K 值作为土壤抗侵蚀性的衡量指标，通过 ArcGIS9.2 和 GS+9.0 软件，分析比较了反距离权重插值法、径向基函数插值法和普通克里格插值法。对江西省土壤抗侵蚀性空间插值的精度。结果表明：研究区域土壤抗侵蚀性的变化范围为 0.149 2 ～ 0.415 7 ，均值为 0.283 9 ，变异系数为 18.06% ，存在中等程度的空间变异性，块金系数为 11.09% ，具有强烈的空间相关性；综合考虑各种插值方法的交叉验证结果和插值效果，认为普通克里格插值法最佳；研究区域土壤抗侵蚀性的空间分布有从东、南、西向中部、北部和东北部不断减小的趋势，且与各土壤亚类抗侵蚀性均值的空间分布规律趋于一致。

 On the basis of the second soil survey data of Jiangxi Province, this paper took K values of EPIC model as measuring indicators of soil anti-erodibility, compared the accuracy of different interpolation methods ， including IDW(inverse distance weighted) ， Spline and Ordinary Kriging, by the software of ArcGIS9.2 and GS+9.0 for the spatial interpolation of soil anti-erodibility in Jiangxi Province. The results show as follows: The spatial variability of soil anti-erodibility at the study area is moderate difference, with the range from 0.149 2 to 0.415 7, mean of 0.283 9, and variance coefficient of 18.06%. The nugget-to-sill ratio is 11.09%  , which indicates that the soil anti-erodibility has strongly spatial relativity in the study area. Taking account of cross-validation and interpolation results comprehensively, Ordinary Kriging interpolation is the best of three methods. Spatial distribution of soil anti  erodibility appears with the decreasing trend from the east, south, west to the central, north and northeast in the study area; in comparison with the mean of each soil sub-class anti-erodibility, both of them have the same law of spatial distribution.