土壤胶体(颗粒)是土壤固相中最活跃的部分。它不仅有巨大的表面,而且带有电荷,因此可表现出电动性质,包括电动电位和等电点。电动性质是胶体体系中有扩散双电层存在的一个指标。电动性质的变化影响胶体体系的稳定性。因此,不论是在基础研究中还是在生产实践中,都需要研究电动性质。 Soil colloids (granules) are the most active part of the soil solid phase. It not only has a huge surface, but also with electric charge, so it can show the electric properties, including electric potential and isoelectric point. The electrokinetic property is an indicator of the existence of a diffused electric double layer in a colloidal system. Changes in the nature of the electric motor affect the stability of the colloidal system. Therefore, both in basic research and in production practice, the need to study the nature of the motor.