强透水层上均质土壤中溶质浓度分布的解析解

The Analytical Solution of Solute′s Concentration Distribution in Homogeneous soil of Impermeable Stratum

从溶质输移扩散方程出发 ,针对强透水层上均质土壤的液体饱和状态 ,在顶层含有大量饱和溶质 (如养分等 )维持着渗透扩散的条件下 ,进行严密的数学推证 ,给出均质土壤中溶质浓度分布的解析解。分析了解的合理性 ,讨论了解的正确性。此解对土壤改良等类似问题具有实际应用价值 。

In this article, starting from solute′s transport and diffusion equation, aiming at the saturation state of liquid in homogeneous soil of impermeable stratum and on the condition that lots of saturated solute (e.g. nutriment) on top of the soil maintain diffusion, a strict mathematical deduction is carried out, and the analytical solution of solute′s concentration distribution in homogeneous soil is given. In addition, the rationality of the solution is analysed, and its validity discussed. It is indicated that this solution has not only a practical application prospect for the amelioration of soil and similar problems, but also has theoretical significance.