土体构造又称为土体构型,是指土壤剖面层次排列及相互关系,它对土壤肥力因素有直接的影响。从上到下,由表及里地认识土壤整体构造及其对肥力的影响,才能掌握土壤运动变化的客观规律,以便调节、改良和不断提高土壤肥力,为农业生产服务。在土壤普查中,准确运用这方面知识,对于正确观察,鉴定土壤剖面,划分土种很有意义。 Soil structure, also known as soil structure, refers to the hierarchical arrangement of soil profiles and their relationship, which has a direct impact on soil fertility factors. From top to bottom, we can understand the overall structure of the soil and its effect on fertility from the perspective of the table, so as to grasp the objective law of the change of soil movement in order to adjust, improve and continuously improve soil fertility and serve agricultural production. In the soil census, the accurate use of this knowledge is very meaningful for the correct observation and identification of soil profiles and the division of soil types.