大型水稻灌区高产节水灌溉优化配水模型研究

An Optimal Distribution Model of Irrigation Water for a Large Irrigated Rice Area

根据江苏省北部地区水资源供需矛盾突出的现状，以大型水稻灌区为研究对象，研究水资源的优化分配问题，从水稻水分生产函数和作物需水模型入手，建立了外引河湖水、内提回归水两种水源供水条件下的水稻全生育期适时调度优化配水数学模型。以灌区典型年供水资料，对优化配水模型进行了复核验证。所建立的模型，与灌区实际用水条件基本相符，为水稻灌区用水管理提供了一条新路。

Aiming to ease up the severe shortage of water resources in north Jiangsu, this paper presents a mathematical optimal distribution model of irrigation water for large irrigated rice areas, in which water from a river or lake out the areas and water from the return flow within the areas are taken as irrigation water resources. The model is developed on the bases of crop water production functions and crop water requirement models and may applies to the whole growing season of rice. Results of testifying the model with an actual case of a typical year show that its performance is good and may be used as a helpful tool in irrigation management in large irrigated rice area in north Jinsu.