土壤胶体概念( soil colloid) 一)分散条统(分散体条) 分散体無是由两种或两种以上物质组成的,一种物质呈连分 布状态,量相对也比较大,稀为分散介质(分散剂);另一种物质分 子不连续,量也比较小,称为分散相(质)。分散相如票与分散介 质之间汲有明显物理界面,分散体糸称为嵱漩,若票分散介质与分 散相有明显的物理界面,叫儆悬浮漩(粗分散体糸)。当分散相介 于二者之间,构成了相对稳定的体糸,叫儆胶体亲统。 土壤本身就是一个复杂的多元分散体。把土壤中较小颗蒞叫胶 体。空气和嫦漩成为分散剂。 The soil contains minute particles called soil colloids. They are smaller than one hundredth-thousand of a millimeter. Soil colloids are thin and disc-like. There are mineral as well as organic soil colloids. Mineral colloids are usually found to be fine particles of clay minerals.一.土壤胶体概念（soil colloid） （一）分散系统（分散体系） 分散体系是由两种或两种以上物质组成的，一种物质呈连续分 布状态，量相对也比较大，称为分散介质(分散剂）；另一种物质分 子不连续，量也比较小，称为分散相（质）。分散相如果与分散介 质之间没有明显物理界面，分散体系称为溶液，若果分散介质与分 散相有明显的物理界面，叫做悬浮液（粗分散体系）。当分散相介 于二者之间时，构成了相对稳定的体系，叫做胶体系统。 土壤本身就是一个复杂的多元分散体。把土壤中较小颗粒叫胶 体。空气和溶液成为分散剂。 The soil contains minute particles called soil colloids. They are smaller than one hundredth-thousand of a millimeter. Soil colloids are thin and disc-like. There are mineral as well as organic soil colloids. Mineral colloids are usually found to be fine particles of clay minerals