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本文研究了发育于福建中亚热带和南亚热带13个土壤剖面的理化性质、微形态性质和粘粒矿物性质,讨论了这些土壤的富铝化程度、红壤和砖红壤性红壤土类划分指标的选择及分类问题,结果表明,供试土壤均处于中度脱硅富铝化阶段,但在程度上有差别。以B层粘粒高岭石的平均含量为主要指标,平均硅铝率为辅助指标,将供试土壤分为两个土类:第一类是砖红壤性红壤,其B层粘粒高岭石平均含量大于70%,或介于60—70%之间,但硅铝率小于2.10;第二类为红壤,其B层粘粒高岭石平均含量小于60%,或介于60—70%之间,但硅铝率大于2.10,这里红壤和砖红壤性红壤的概念不完全等同于地带性土壤的概念。
In this paper, the physical and chemical properties, micromorphological properties and clay mineral properties of 13 soil profiles developed in the middle and subtropical and subtropical regions of Fujian Province were studied. The degree of aluminum enrichment in these soils was discussed, and the selection criteria for soil classification of red soils and latosol soils The results showed that all the tested soils were in the stage of moderate desiliconization and aluminization, but to some extent. Taking the average content of clay kaolinite in B layer as the main index and the average Si / Al ratio as an auxiliary index, the test soil is divided into two types of soil: the first type is the red soil of brick red soil, and the clay of B grade kaolinite The average content of rock is more than 70%, or between 60-70%, but the Si-Al ratio is less than 2.10. The second type is red soil. The average content of kaolinite in layer B is less than 60%, or between 60-70% %, But the silica-alumina ratio is greater than 2.10, where the concept of red soil and red brick red soil is not exactly the same as the concept of zonal soil.