粘闭作用(puddling)是指土壤在渍水的条件下,从事机械操作,土壤结构体受到破坏,颗粒充分分散,如果作用强烈,土壤将形成粘粒都持有较厚水膜的均匀质体,这种均匀质体称为粘闭土壤。世界上绝大多数水稻种植地区都把粘闭耕层土壤作为水稻栽培的一项重要措施,其主要 Puddling refers to the fact that under the conditions of waterlogging, the soil is subjected to mechanical operations, the soil structure is destroyed, and the particles are sufficiently dispersed. If the action is strong, the soil will form a homogeneous plastid This homogeneous mass is called clayey soil. The vast majority of rice-growing areas in the world regard the use of clayey soils as an important measure of rice cultivation, mainly