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本文利用灰色关联度分析方法对耐荫性甘薯品比试验7个品种的8个主要农艺性状时鲜薯产量的影响进行了分析。结果表明：成薯率、单薯重、成薯数、分枝数等四个性状的影响较大，因此认为在耐荫性甘薯新品种选育过程中，良好的结薯习性和多分枝的生长特性是主要的选择指标。
In this paper, the gray relational analysis method was used to analyze the effects of sweet potato yield on the yield of fresh potato in 8 main agronomic traits of 7 varieties. The results showed that: potato yield, single potato weight, potato number, number of branches and other four traits have a greater impact, so that in the tolerance of sweet potato new varieties breeding process, good tuber habits and multi-branched Growth characteristics are the main selection criteria.