青泥层又称潜育层、还原层(不是一般淹水条件下的耕作还原层),是一部分水稻土中剖面形态的一个重要特征,是水稻土中的一个不良层次。水稻土是否有青泥层发育以及青泥层发育的状况如何对于水稻土的生产性能有着极为密切的关系。因此,研究青泥层的形成条件、特征特性以及在分类上的地位等,对于研究水稻土和稻田改良有很重要的意义。 The green layer, also called latent layer and reduction layer (not the tillage layer under general flooding conditions), is an important characteristic of the profile shape of part of paddy soil and is an undesirable layer in paddy soil. Whether paddy soil has the development of green mud layer and the development of green mud layer has a very close relationship with the performance of paddy soil. Therefore, it is very important to study the formation conditions, the characteristics and the classification of green clay layer in the study of paddy soil and paddy field improvement.