灰色关联度分析法和DTOPSIS法在两系杂交粳稻品种综合评价中的应用研究

Application of Grey Correlation Analysis and DTOPSIS Method in Comprehensive Evaluation of Two-line Japonica Hybrid Rice Varieties

采用灰色关联度分析法和DTOPSIS法对信阳市农业科学院组配的18个两系杂交粳稻品种和对照品种9优418的品比试验结果进行分析,为水稻新品种的综合评价提供理论依据。结果表明,灰色关联度分析法和DTOPSIS法对19个水稻品种的排名结果差异不大,仅品种M2和M14的排序稍有不同,这两种方法的排序结果相关性达到极显著水平,说明二者对于水稻品种优劣的综合评价具有一致性。与产量表现的排名结果相比,DTOPSIS法与灰色关联度分析法的排名结果更吻合。Ci值差异大于产量差异和Gi值差异,说明在综合评价水稻品种时,DTOPSIS法比产量排序法和灰色关联度分析法更能区分品种的优劣。

The results of rice variety comparison experiments of 18 two-line japonica hybrid rice varieties developed by Xinyang Academy of Agricultural Sciences and the control variety 9 You 418 were analyzed by using the grey correlation analysis method and the DTOPSIS method,which provided a theoretical basis for the comprehensive evaluation of new rice varieties.The results showed that the ranking results of 19 rice varieties by the grey correlation analysis method and the DTOPSIS method were not very different,except for the ranking of varieties M2 and M14.The correlation between the ranking results of the two methods reached a very significant level,indicating that the two methods had consistency in the comprehensive evaluation of rice varieties.Compared with the ranking results of yield performance,the ranking results of the DTOPSIS method and the grey correlation analysis method were more consistent.The difference of Ci value was greater than the difference of yield and Gi value,indicating that in the comprehensive evaluation of rice varieties,the DTOPSIS method was better than the yield ranking method and the grey correlation analysis method to distinguish the superiority of varieties.