在试验资料的基础上,对两种作物水分生产函数模型进行了分析。说明了作物全生育期水分的抛物线模型和作物生育阶段水分的Jensen模型在理论上的一致性和差异性,为灌溉水量的优化分配提供了依据。同时分析了只用Jensen模型对灌溉水量进行作物间和作物生育期内的优化,是有一定的缺陷的。 Based on the experimental data, the water production function models of two crops were analyzed. It shows that there is a theoretical consistency and difference between the parabola model and the Jensen model at the growth stage of crops during the whole growing season, which provides a basis for the optimal distribution of irrigation water. At the same time, it is analyzed that the Jensen model only has some defects in the optimization of irrigation water during crop and crop growth period.