随着工农业生产的迅速发展和人民生活水平的不断提高,人们对水的需要,不仅在数量上而且在质量上提出了更多更高的要求,同时既需要了解水质的现状,又需要预测水质的将来情势,因此就必须对水质进行预报。本文采用灰色系统GM(1,1)模型,利用我区香溪河流域兴山断面1983～1989年化学耗 With the rapid development of industrial and agricultural production and continuous improvement of people’s living standards, people’s demands for water not only bring forth more and more requirements in terms of quantity and quality, they also need to understand not only the current status of water quality but also the water quality The future situation, it is necessary to forecast the water quality. In this paper, gray system GM (1,1) model, the use of Xiangxi River Basin Xingshan Section 1983 ~ 1989 chemical consumption