摘要土壤胶体内部存在一定的双电层，所谓的离子交换就是在相应的扩散层当中，相应的补偿离子能够与溶液当中游离态的电荷完成等价交换，进行等价交换的前提条件是 相 应 的 电 荷 要 与 补 偿 离 子 所 带 电 荷 一 致 。 阳 离 子 交 换 量可以归结为土壤内部的负电胶体依靠静电引力有效完成阳离子吸附的数量级，单位 kg 土壤中富含具有代换性质的阳离子总量在这里可以表示为厘摩尔单位千克土。凭借其本身存在的强劲吸附效果，在一定程度上不仅可以改变其内部溶液浓度，还能进行一系列污染物的吸附，确保成分呈现出多样化，从而促使内部溶液实现平衡状态，与此同时还能避免养分流失。其阳离子所具备的交换性在一定程度上可以彰显内部养分含量，有效把控阳离子交换性能可以实现土壤的有效改良。关键词：土壤胶体，阳离子交换，污染物吸附ABSTRACTThere is a certain electric double layer inside the soil colloid. The so-called ion exchange is in the corresponding diffusion layer, and the corresponding compensating ions can be equivalently exchanged with the free electric charge in the solution. The precondition for the equivalent exchange is that the corresponding electric charge is required. It is consistent with the charge of the compensation ion. The amount of cation exchange can be attributed to the fact that the negative electrocolloid inside the soil is effectively on the order of cation adsorption by electrostatic attraction. The total amount of cations rich in substitutional properties per unit kg of soil can be expressed herein as centistokes of kilograms of soil. With its strong adsorption effect, it can not only change its internal solution concentration, but also adsorb a series of pollutants to ensure that the composition is diversified, which promotes the equilibrium of the internal solution. Can avoid nutrient loss. The exchangeability of the cation can highlight the internal nutrient content to a certain extent, and eff...
