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：本文研究结果表明，玄武岩发育的红壤和砖红壤粘粒中全铁和游离氧化铁均明显高于花岗岩发育的红壤和赤红壤。粘粒中ＳＩＯ２／Ｒ２Ｏ３和ＳｉＯ２／Ａｌ２Ｏ３同一母质发育的砖红壤和赤红壤低于红壤，这表明前者富铝化和富铁化程度强于后者。ＴｉＯ２含量较高，范围为１２．６～１６．０ｇｋｇ－１，这是玄武岩发育的红壤的特点，其胶体的比表面、ＣＥＣ值高于花岗岩发育的近一倍； 电位也有同样趋势。对于同一剖面，ＣＥＣ和 电位呈正相关；但就４个剖面整体考虑，二者相关不显著。ＣＥＣ、Ｓ·Ａ和 电位用回归方程处理，Ｒ２＝０．９６２４（ｎ＝１６）。
The results of this study show that the total iron and free iron oxide in the red clay and the red clay in the developed basalts are significantly higher than that in the red and red latosols of granite. Red clay and red soil with the same parent material of SIO2 / R2O3 and SiO2 / Al2O3 in clay show a lower level than red soil, indicating that the former is more aluminiferous and iron-rich than the latter. The content of TiO2 is higher in the range of 12.6-16.0gkg-1, which is characteristic of basalts-developed red soil. The specific surface area and CEC value of colloids are nearly double that of granite. Potential also has the same trend. For the same section, CEC and potential were positively correlated; but considering the four sections as a whole, the correlation between them was not significant. CEC, S · A and potential were treated with regression equation, R2 = 0.9624 (n = 16).