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本文按照《中国土壤系统分类（首次方案）》，首先以盐积层、碱积层等检索出盐成土，将难于改良的盐土和碱土完全集中起来，然后用新建立的干旱土表层和干旱土特有的诊断表下层检索出干旱土。并根据钙积层、石膏层、盐积层、粘化层以及雏形层等诊断层，按此顺序检索正常干旱土亚纲各土类，基本上与原半荒漠土壤和棕漠土．灰漠土等主要土类相对应，文中列举各主要亚类的理化分析结果，并对干旱土诊断层和诊断特征概念和指标作了较明确的修订，以便在实践中应用。
According to “China’s soil system classification (first program)”, this paper first retrieves salt into soil by salt stratification, alkali accumulation and so on, and combines the hard-to-modify saline soil and alkaline earth completely. Then, with newly established arid soil surface and drought Drought-soil is retrieved below the soil-specific diagnostic table. Based on the diagnostic layers of calcareous layer, gypsum layer, salt layer, viscous layer and rudimentary layer, the soil types of normal arid sub-class are retrieved in this order, which is basically the same as the original semi-desert soil and brown desert soil. Gray desert soil and other major types of soil corresponding to the article lists the major sub-categories of physical and chemical analysis of the results, and the diagnosis of arid soil and diagnostic features of the concepts and indicators made a more clear amendment for practical application.