The method of grey comprehensive evaluation and its application based on the principle of maximum deviation

Based on the evaluation method of grey comprehensive subordination degree, a new method of determining the weight for the variety regional test was proposed in accordance with the principle of maximum deviation in this paper. Using the method, the analysis was carried out for the regional test of winter wheat variety in the south of Huanhuai River valley in China in 2002-2003.The results show that the analysis method overcomes the weakness of subjectivity from the methods of expert consultant and analytical hierarch process, its analysis results will be more objective and reliable. The production practices in large areas show that the method has a definite feasibility and availability.