论文部分内容阅读
本文对浙江省红壤和黄壤12个代表剖面进行了室内外研究,认为它们的(B)层的粉砂/粘粒比可反映矿质土粒的风化蚀变强度;其粘粒的硅铝率,只反映这两个土类富铝化的共同属性,但不能作为区分这两个土类的分类标准。因为受母质特性之影响,这两个土类的各亚类或土属的硅铝率。存在着客观交叉的情况。而黄红壤亚类的粉砂/粘粒比及硅铝率,均偏离典型红壤或黄壤,从而反映了“黄红壤”是一种过渡性土壤。粘粒的矿物学鉴定和土壤盐基饱和度及腐殖质组分分析等,均证实了野外土壤勘察中对这些土类和亚类划分的确切性。
In this paper, 12 representative sections of red soil and yellow soil in Zhejiang Province were studied indoor and abroad. The results show that the silt / clay ratio of (B) can reflect the weathered alteration strength of mineral soil. Only reflect the common properties of the two soil Al-rich, but not as a distinction between the two soil classification criteria. Because of the influence of the parent material, the ratio of silica to alumina in each sub-class or soil type of these two soil types. There is an objective cross. However, silt / clay ratio and silica-alumina ratio of yellow-red soil sub-class deviate from the typical red or yellow soil, which reflects that “yellow-red soil” is a transitional soil. Mineralogical identification of clay particles and analysis of soil base saturation and humus composition all confirm the accuracy of the classification of these soils and sub-categories in field soil investigation.