优化雷达图法在烤烟上部叶外观质量综合评价中的应用

本研究通过采用权重法计算夹角大小、运用平均三角形法提取雷达图唯一特征量、消除短板效应系数λ来构造周长评价向量、简化综合评价函数对传统雷达图法存在的不足进行优化,并将优化后的雷达图法应用于攀枝花不同氮施用量的烤烟上部叶外观质量综合评价中。结果表明,优化雷达图法较传统雷达图法能得到唯一的评价结果,优化雷达图法综合评价出的样本外观质量优劣排序与指数和法的一致,而优化雷达图法反映信息更丰富更直观。

Application of Optimized Radar-graph Method on Comprehensive Evaluation of Appearance Quality of Upper Leaves of Flue-cured Tobacco

In this study, the method of weighting was adopted to calculate the corner dimension.The average triangle method was applied to obtain characteristic quantities of radar-graph and eliminate the short-board effect coefficient λ to structure the perimeter evaluation vector.It can simplify the optimization of comprehensive evaluation function on shortcomings of traditional radar chart method.Then the optimized traditional radar-graph was utilized in the comprehensive evaluation of appearance quality of flue-cured Tobacco's upper leaves in different Nitrogen treatments of Panzhihua.The results showed that the optimization radar-graph method could obtain the only consequence which was better than the traditional radar-graph method.The quality sort of sample's appearance quality by optimization radar-graph method was consistent with Index sum method while the optimization radar-graph method could express richer and more intuitive information than Index sum method.