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在土壤水分物理特性研究中,土壤最重要的特性——土壤孔隙度引起了很大的注意。众所周知,孔隙度决定着土壤水分和空气状况,由于这些因素的配合可造成植物生长的良好条件或不利条件。为了深入理解土壤导水性、土壤水分上升和保持的能力,根区空气的可给程度等,必须按照孔隙的动态的有效大小把孔隙进行区分。活性毛管水所占据的土壤孔隙和通气孔隙在农业生产实践中具有最重要的意义。非活性孔隙含有移动缓慢的毛管水,这种水分很少为植物吸收。
In the study of physical properties of soil moisture, the most important characteristic of soils - soil porosity has aroused a great deal of attention. It is well-known that porosity determines the soil moisture and air conditions, and good or bad conditions for plant growth can result from the combination of these factors. In order to gain a deeper understanding of soil conductivity, the ability of soil moisture to rise and maintain, the availability of air in the root zone, etc., the pores must be distinguished according to the dynamic and effective size of the pores. The soil pores and aeration pores occupied by active capillary water have the most important significance in agricultural production practice. Inactive pores contain slow-moving capillary water, which is rarely absorbed by plants.