三江平原易涝地区抗旱灌溉问题

Drought Relief Measures and Irrigation in Lowland of Three River Plain

以七虎林河流域为例，利用ＦＬＯＷＡＴ水资源模拟模型对该地区水量分配，土壤水变化等量化分析，提出三江平原易涝地区存在干旱问题，对农业生产影响较大。为了保持粮食高产稳产，应发展农田灌溉，并提出发展灌溉的模式。

The drought is another main hazard restraining agricultural production in the lowland area, which is composed mainly of lessive clay soil. And it often occurs during the end of Spring and the begining of Summer while the wheat is in the ear, the soy bean bears pods and corn is in the heading period. All of them are in key growing season. This paper took Qi Hulin basin as an example, using water resources model FLOWAT, to numerically analyse water distribution and soil water variation. The results show that the drought seriously lowers the crop production. In order to keep up high and steady crop production, some drought relief measures and irrigation methods are presented.