本文给出了谷类作物沟、畦灌溉设计的优化模型。该模型是利用现有的,进行灵敏度分析的标准线性规划程序,将非线性的目标函数和约束条件进行线性处理,並借助微机运算求得解答,模型给出了设计变量的最优解(入流量、径流长度、灌水截止时间和畦田宽度)。求解优化模型时采用了田间资料。结果证明,灌水截止时间是很关键的设计变量,供水和有效灌水时间对于设计而言均属重要因素。 This paper gives the optimization model of furrow irrigation and furrow irrigation design for cereal crops. The model uses the existing standard linear programming procedures for sensitivity analysis to linearly process the nonlinear objective functions and constraints. The model is solved by means of computer operations. The model gives the optimal solution of the design variables Flow, Runoff Length, Irrigation Deadline, and Obsidian Width). Field data was used to solve the optimization model. The results show that the deadline for irrigation is a key design variable, and water supply and effective irrigation time are all important factors in design.