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本文应用地统计学的方法，对黄淮海平原０～２００ｃｍ各土层的含盐量及其盐分组成进行了半方差函数分析，结果表明：黄淮海平原土壤盐分具有明显的空间变异特征，该区盐分已集中分布在某些较大的区域。目前，盐渍土或盐渍化土壤比较分散的局面已经不再存在；根据土壤盐分的空间分布特征，可将影响盐分分布的因素划分为区域因素（稳定因素）和非区域因素（随机因素）；同时，还可以判断这些因素的影响程度。对黄淮海平原土壤盐分组分的空间特征分析，可将盐分组成离子分为二大类，Ｋ＋、Ｎａ＋、Ｃａ２＋、Ｃｌ－和ＣＯ３２－为非区域性盐分离子；ＳＯ４２－、Ｍｇ２＋和ＨＣＯ３－为区域性盐分离子。
In this paper, the geostatistics method was used to analyze the salt content and its salt composition in different soil layers from 0 to 200 cm in the Huang-Huai-Hai Plain. The results showed that the soil salinity had obvious spatial variation characteristics in Huang-Huai-Hai Plain, Salinity has been concentrated in some larger areas. According to the spatial distribution of soil salinity, the factors influencing salinity distribution can be divided into regional factors (stable factors) and non-regional factors (random factors) ; At the same time, you can also determine the extent of the impact of these factors. Analysis of the spatial characteristics of soil salinity components in the Huang-Huai-Hai Plain shows that salt ions can be divided into two groups: K +, Na +, Ca2 +, Cl- and CO32- as non-regional salt ions; SO42-, Mg2 + and HCO3- Regional salt ion.