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应用灰色关联度分析法对长江中下游片冬麦区９个供试小麦种的１０个主要性状进行生态适应性综合分析。结果表明，灰色关联度分析法行之有效，在实践上具有指导意义，其评价结果与品种表现一致。其中宁９３１２、安农９２４８４品种关联度最大，综合性状最好，生态适应性广且高产稳产，宜大面积推广应用。
The gray relational analysis (PCA) was used to analyze the ecological adaptability of 10 main wheat cultivars in 9 winter wheat growing areas in the middle and lower reaches of the Yangtze River. The result shows that the method of gray relational analysis is effective and has guiding significance in practice. Its evaluation result is consistent with that of breed. Among them, Ning 9312 and Annong 92484 had the highest degree of correlation, the best comprehensive characters, wide ecological adaptability, high and stable yield, and should be widely applied and popularized.