植物吸收养分的数学机理模型是在土壤肥力与植物营养两个学科的共同深入研究以及电子计算机的应用中建立与发展起来的。近２０年来，国外有关这方面的研究发展较快，并已逐步应用到土壤供肥能力与施肥方法的评价、作物的生长模型及产量预报等方面。本文从一般根系养分吸收模型的理论基础及其参数出发，论述了养分吸收机理模型研究的发展概况与趋势 The mathematic model of plant nutrient uptake was established and developed in the common and in-depth study of both soil fertility and plant nutrition and the application of electronic computers. In the recent 20 years, the overseas research on this area has been developing rapidly, and has been gradually applied to the evaluation of soil fertility and fertilization methods, crop growth model and yield forecast. In this paper, starting from the theoretical basis and the parameters of the general root nutrient uptake model, the development and trend of the research on nutrient absorption mechanism model