太湖平原水田区灌溉回归水分析

Analysis of Irrigation Return Flow in the Rice-Growing District of Taihu Lake Plain

江苏太湖平原地区灌溉水源丰富,排水通畅,但由于年际水量分配不均,干旱仍时有发生。根据这一情况,对灌溉水的利用问题进行了研究。在大、小区水量平衡的基础上,提出了灌溉水的回归系数和回归水的重复利用系数,以及灌溉水的重复利用系数。为本区水利规划、用水管理和供水规划提供了可靠的依据。

The Taihu lake plain region of Jiangsu province abounds with irrigation water resource and unobstructed drainage. However, the drought will be happened frequently because of the uneven yearly water distribution. The reuse of irrigation water has been studied in this paper according to above situation. The return coefficient of irrigation water. reuse coefficient of return flow and reuse coefficient of irrigation water have been released based on the water balances in plot and field. The study provides a reliable basis for water conservancy planing, water management and water supply planing.