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根据菲克定律、改性传质双膜论、液膜寿命分布函数,建立了包膜型控释肥料养分释放的偏微分方程组。用拉普拉斯变换法求解该方程组,并将拉普拉斯变换与液膜寿命分布函数结合,得到了养分释放速率的表达式,为进一步研究提供了理论基础。
According to Fick’s law, modified mass transfer double membrane theory and liquid membrane lifetime distribution function, the partial differential equations of nutrient release of coated controlled release fertilizer were established. The Laplace transform method was used to solve the system, and the Laplace transform was combined with the liquid film lifetime distribution function to obtain the expression of nutrient release rate, which provided a theoretical basis for further research.