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发生在土壤中的各种过程,包括盐分的运动,都与土壤的特性有关,因此,对这些过程,例如对由于灌水或冲洗而引起的土壤剖面脱盐动态进行模拟时,模拟的结果如何同样也取决于模式反映自然条件的程度。在对土壤剖面中的盐分运动进行数学模拟时,土壤中水分的对流和盐分的扩散流起着重要作用。为了计算水分对流的数量,必需知道引起对流运动的力——水势梯度Φ,Φ=ψ_k+G(ψ_k—毛管吸附势,G—重力势)
The various processes that occur in the soil, including the movement of the salt, are all related to the characteristics of the soil and so how are the simulations also done for these processes, for example when simulating the desalination of the soil profile due to irrigation or irrigation? Depends on the extent to which patterns reflect natural conditions. Mathematical modeling of salt movement in the soil profile plays an important role in the convection of water and the diffusion of salt in the soil. In order to calculate the amount of water convection, it is necessary to know the force-water potential gradient Φ, Φ = ψ_k + G (ψ_k-capillary adsorption potential, G-gravity potential)