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将作物临界土壤含盐量和地下水临界埋深等概念应用于防治灌区土壤盐碱化最优规划，提出了非线性规划最优灌排模型。以新疆巩留县团结灌区灌排工程为实例，求解了不同年型（Ｐ＝２０％、５０％、７５％、９５％）的防治土壤盐碱化灌排优化决策，求得的灌排水量、淋洗水量、作物生长季节土壤盐分动态变化及地下水位年内调控过程等结果，与灌区实际情况拟合较好。
The concepts of crop salinity and groundwater critical depth are applied to the optimal plan of soil salinization in irrigated area. The optimal irrigation and drainage model for nonlinear programming is proposed. Taking the Irrigation and Drainage Project of Tungjie Irrigation District in Gongliu County, Xinjiang as an example, the optimal decision of preventing and controlling soil salinization and irrigation with different years (P = 20%, 50%, 75%, 95% The amount of irrigation water, the dynamic change of soil salinity during the growing season and the regulation process of groundwater level during the year, which is in good agreement with the actual situation in the irrigation area.