品种综合评价的数学方法

品种的好坏、优劣直接影响农业生产，因此，选育的新品种在投入生产前需要进行品比实验、生产试验和品种鉴定。这些工作实际上就是对选育的新品种进行综合的客观评价。基于这种需要，本文给出了一种建立在主成分分析基础上的综合评价数学方法。应用这种方法对家蚕３０个品种进行综合评价，获得了与实际情况相当吻合的评价结果。根据评价值Ａκ，将这３０个家蚕品种分为４大类，Ａκ〉７．００的为优秀品种，７．００〉Ａκ〉－７．００的为低劣品种，而Ａκ〈－７．００则为极低劣品种。

A Mathematical Method for Comprehensive Evaluation of Varieties

Agricultural production is directly affected with good or bad varieties applied, therefore it is necessary to do comparison and identification of varieties before new breed varieties are applied to agricultural production. These works are to comprehesively and objectively evaluate varieties. For this requirement, a mathematical method for comprehensive evaluation of varieties was developed from analysis of principal component and was applied to evaluate 30 silkworm varieties. The result was considerably identifed with production practices of these 30 silkworm varieties. According to Ak, these 30 silkworm varieties may be divided into 4 groups : excellent varieties with Ak > 7.00, good varieties with 7.00 > Ak > 0, bad varieties with 0 > Ak > -7.00 and very bad varieties with Ak < -7.00.