【摘要】 对棕壤、黄棕壤、黄褐土和（土娄）土344个样品阳离子交换量（CEC）与有机质、粘粒用方程y（CEC）=b₀+b₁χ₁（粘粒％）+b₂χ₃（有机质％）+b₃χ₁χ₂进行回归分析表明,在粘粒与有机质数量比为3～16（平均为8左右接近有机质与粘粒CEC之比）时,有机粘粒复合显著影响土壤CEC,且复合消耗有机质与粘粒总交换点的数量分别为41.8％,26.7％,31.9％和19.8％。更多还原

【Abstract】 Results analysed by using multiple regression equation. F(CEC) = 60+61x1 (clay%) +62x2 (organic matter%) +b3iilxi of CEC, organic matter and clay of 344 soil samples of brown earth,yellow brown earth, yellow drab-earth and lou soil indicated that when the content ratio of clay to organic matter Was 3-16 (average 8 or so, close to the CEC rate of organic matter to clay) , the organic-clay complex affected soil CEC significantly. This also revealed the complex depleted an amount of total exchange-site of clay and organic matter by 41.8%} 26.7%} 31.9% and!9.8% in four types of soils.更多还原