灰色关联度法在烤烟品种重要性状综合评价中的运用

Application of Grey Relational Analysis in Evaluating Major Attributes in National Variety Trial of Flue-cured Tobacco

摘要: 以2008年全国烤烟品种区域试验北方区参试品种的主要农艺性状、经济性状、化学成分、抗病性等调查记载数据为基础，应用灰色关联度法对各供试品种（系）的主要性状进行了综合分析。结果表明，灰色关联度法对于烤烟品种性状综合评价应用性较强，较以往的方法更系统、简洁、明了、易于操作；在等权关联度法和加权关联度法的对比分析中，得出加权关联度法结果更接近实际评价，从而说明权重对于灰色关联度法评价区试品种有着很重要的作用。

Abstract: The grey relational analysis was applied to evaluate the main characters such as main agronomic traits, the economic characters, chemical composition and the diseases resistance of the test varieties of 2008’s national flue-cured tobacco variety regional test in the northern. The results indicated that grey relational analysis was suitable for the comprehensive evaluation of flue-cured tobacco varieties, and it was systematic, simple and easy to operate. Compared with equal relational grade analysis, the weighted grade analysis was more close to the actual evaluation. It showed that weight was important to evaluate test varieties in grey relational analysis.