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应用信息熵理论对13个甘蔗品系的7项农艺性状和6项工艺性状指标进行综合评价。结果表明:根据信息熵理论计算出各评价性状的熵权(即权重)与专家依靠经验评判确定的权重大小趋势一致;参试材料的综合评价结果与实际表现一致;认为选育甘蔗优良品种,应对熵权值大的性状,如蔗糖产量、甘蔗产量、有效茎数、蔗糖分等加大选择强度,熵权值小的性状如重力纯度等可从轻考虑。信息熵理论应用于甘蔗品种综合评价,在一定程度上能克服传统综合评价方法的局限性,从而提高评价结果的可靠性和客观性,可为甘蔗品种选育提供新的思路和方法。
According to the theory of information entropy, seven agronomic traits and six trait indexes of 13 sugarcane lines were comprehensively evaluated. The results show that: according to the information entropy theory, the entropy weight (ie, weight) of each evaluation trait is consistent with the trend of weights determined by experts based on experience evaluation; the comprehensive evaluation results of the tested materials are consistent with the actual performance; The traits with large entropy weight such as sucrose yield, sugarcane yield, effective stalks, increased selection intensity of sucrose fraction, and entropy weights of small traits such as gravity purity may be considered lightly. The information entropy theory applied to the comprehensive evaluation of sugarcane varieties can overcome the limitation of traditional comprehensive evaluation methods to a certain extent so as to improve the reliability and objectivity of evaluation results and provide new ideas and methods for breeding sugarcane varieties.