東海地方洪積層台地の赤色土 : 渥美半島高師原および宇治山田市西方蚊野の例について

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In this paper it deals with the morphological, mechanical and chemical characteristics of the Red Soils formed over the diluvial deposits of Takashihara and Kano, Pacific Coast of Central Japan (See Tables 1,2 and 3). 1. Main soil formers and profile characteristics of the soils are given in Tables 1 and 2. These soils consist of very thin organic layer (A_0) and slightly dark-coloured surface soils over the reddish orange compact B horizons underlain by grav〓l beds. The lower part of the A horizon does no〓 show any evidence of bleaching. The aggregates of the B horizon do not give a friable consistency, but they are fairly plastic when moist, and hard when dry. 2. According to heavily leaching, the soils are strongly to very strongly acid in reaction, and the degrees of base-saturation range from 20 to 40 percent, except for that of the A_0 layer of Takashihara soil which reaches to about 64 percent. The colloidal clays of them are more allitic than those of the Red Soil of Northern Kyushu and the red earths South China. 3. Exchange reactions (pH in water minus pH in 0.01 n sodium sulphate) of the various horizons show neutrality. From this and other properties it may be considered that these soils are subjected to the anionic solvation and eluviation, and consequently, they are not the products of podzolization.
社団法人日本土壌肥料学会の論文
1951-08-15