灌区水资源优化利用的水盐区分法

本文提出把灌区优化利用水资源同当地水盐状态特征结合起来的水盐区分法,依据土壤水盐特征把灌区划分为不同的分区,各分区以独立的水资源用户,建立其以改善或充分利用水盐环境的水资源优化利用模型,采用LP方法,组形成灌区多目标的LP模型集,求解该模型集,可得到优化的配水方案,实现以土壤水盐为状态指导灌溉的节水途径。以景泰川一期灌区为应用实例,论证了该方法的应用过程和有效性。

A WSD METHOD FOR THE OPTIMAL UTILIZATION OF WATER RESOURCES IN AN IRRIGATED AREA

In this paper, a WSD (water - salinity division) methed which combines the optimal irrigation with the optimal controlling water-salinity environment is put forward. According to the water-salinity feature of the soil, the irrigated region is classified into different subregions. The optimal model of ameliorating or utilizing the water-salinity environment for each subregion is built up as one independent water user. By using the LP method, the multiobjective LP models for the irrigated region can be formed. The optimal water disrtibution is obtained through resolving the models. Take Jintai Irrigated Area of Gansu as an example, the application and effectiveness of the method is demonstrated.