关键词: 干旱预测, 灰色系统理论, GM(1, 1)模型

Abstract: Through the analysis of the annual precipitation data of the three monitoring points in Suining from 1990 to 2009, this paper established the GM(1, 1) drought forecasting model according to grey system and then made predictions on the possible drought ages between 2011 and 2040, which provides a scientific basis for drought prevention in this region.

Key words: drought prediction, grey system, GM(1,1) model