关键词: 海带, 灰色关联分析, TOPSIS, 综合指数, 经济性状, Saccharina japonica , Grey correlation analysis, TOPSIS, Comprehensive index, Economic characters

Abstract: Application of mathematical tool for comprehensive evaluation of Saccharina japonica traits is of great significance to Saccharina japonica breeding and variety production performance comparison. By method of TOPSIS evaluation method, comprehensive index method and the evaluation method of combining these three methods, we carry out main economic characters research of the leaf length, leaf width, bandwidth, wave plait thickness, leaf thickness, fresh weight for Rongfu, ZajiaoNo. 1, Ailunwan, Pingbancai, Fujian, Sanhai and Dongfang No. 3. The results showed that Rongfu, Ailunwan and Sanhai reveals the best comprehensive characters, while Fujian and Zaohoucheng the worst. Among different evaluation methods, TOPSIS evaluation method and comprehensive index method showed the highest consistency, which is better than grey relation analysis. The result of comprehensive analysis is in compatible with the result in regional test which shows that these three methods can evaluate the economic characters comprehensively and objectively.