| According to the fact that the viewpoints on whether the interlayer soil influences the maximum height of the capillary water rise or not always keep difference,the maximum height of the capillary water rise in sand-layered soil was studied through the experiment and analysis which was based on the dynamics theory of the soil water movement.The results showed that the maximum height of the capillary water rise of layered soil was mainly determined by the sand soil texture,position,thickness and their mutual relationship,and they also were closer connected with other soil texture in the profile.When the soil profile was certain,the height was possible influenced by the worse sand particle size distribution, the thicker sand layer or the higher sand layer position as compared to the uniform soil. With D10 means effective particle diameter of the sand layer and “μ” means no uniform coefficient of it and “z” means the position of it,the paper concluded that the height would decrease when the sand layer meets with the conditions,i.e..This will provide important information for further studies on transport of water and salt in layered soil regions. |