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以中国传统名花──洛阳牡丹330个品种为研究材料，采用模糊数学方法构造项目、类目反应表，建立专家打分系统．在此基础上构造评估模型，并对每个品种进行评估．采用方差分析及参数估计的方法将330个品种划分为4等:其中Ⅰ等（优)含16个品种，为大家共认的珍稀品种；Ⅱ等（良）含51个品种，为牡丹的上等品种；Ⅲ等（一般）含231个品种；Ⅳ等（差)含32个品种．本研究较科学地解决了洛阳牡丹品种种质资源的定量评估及等级划分问题，为牡丹品种的计算机管理、信息交流、选种育种、市场销售提供了定量依据．
Based on the 330 famous varieties of Luoyang peony in China, which are the famous traditional flowers in China, the fuzzy mathematics method is used to construct the project, the category of response list and the expert scoring system. Based on this, the evaluation model was constructed and each variety was evaluated. The variance analysis and parameter estimation method were used to classify 330 cultivars into four groups. Among them, 16 cultivars (Ⅰ) and 16 cultivars were recognized as rare cultivars, and Ⅱ (including 51 cultivars) And other varieties; Ⅲ (general) contains 231 varieties; Ⅳ (poor) contains 32 varieties. This study more scientifically solved the quantitative evaluation and grading of Luoyang peony germplasm resources, which provided the quantitative basis for the computer management, information exchange, seed selection breeding and market sale of Peony varieties.