湖北省地带性土壤发生学特性的探讨

研究了湖北省不同气候带、不同母质上发育的棕红壤、黄棕壤和黄褐土的主要性状。结果表明,某些性状如土体的Sa、ba值和粘粒的活性等,其风化和淋溶强度虽都有自北而南增强的趋势,但有重叠现象,可作参考性分类依据;土壤饱和度、粘粒的交换量、酸度和粘粒的矿物学组成等在各土类之间有较好的分异性,可作为本地区土壤分类的诊断特性。

TENTATIVE RESEARCH ON GENETIC CHARACTERISTICS OF ZONAL SOILS IN HUBEI PROVINCE

Brown-red earth, yellow-brown earth and yellow sinnamon soil are the major tran-sitional soil groups located in Hubei Province. This paper deals with some characteris-tics of soils derived from granite, earthy shale, and quaternary loess-like deposits, anddiscussed the classification of these soils. The paper shows that Sa ratio, ba value and the activity of clay are more or lessoverlapped in different kind of soils, although there is a tendency of increasing wea-thering and leaching from north to south. But some properties such as base saturation,CEC of clay, acidity and mineral composition are more differential between soil groups,which can be used as a diagnostic characters of soil classification in this region.