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针对节水压采区水资源紧缺、种植结构不合理、灌溉定额较大等问题，提出了基于作物水分生产函数的多目标种植结构优化模型。以衡水市为例，以种植结构和灌水量为优化变量，以经济效益最大和总灌溉水量最小为优化目标，建立了多目标优化模型，通过改进的NSGA-II算法进行优化计算，得出了不同灌溉水价水平下对应的种植结构和灌水量调整方案。结果表明，小麦种植面积比现状种植面积有所减少，玉米、花生等耗水量小的作物面积有所增加。通过优化，合理提高灌溉水价可促进高耗水作物种植面积的减少，扩大低耗水作物种植面积。
In view of the problems of shortage of water resources, irrational planting structure and large irrigation quota in water saving and pressure mining area, a multi-objective planting structure optimization model based on crop water production function is proposed. Taking Hengshui City as an example, taking the planting structure and irrigation volume as optimization variables, the multi-objective optimization model was established with the goal of maximizing the economic benefits and minimizing the total amount of irrigation water. The optimized NSGA-II algorithm was used to optimize the model. Corresponding planting structure and irrigation volume adjustment plan under different irrigation water price level. The results showed that the area planted with wheat decreased as compared with the current planting area, and the area of crops with small water consumption such as corn and peanut increased. Through optimization and reasonable increase of irrigation water price, the reduction of planted area of high water consumption crops can be promoted and the planting area of low water consumption crops can be expanded.