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该文应用灰色关联分析的原理，通过各性状对单株产量的关联系数εi（k）及关联度γi，研究影响秋甘薯早世代品系单株产量的主要性状的重要程度。结果表明，秋甘薯早世代的主要性状与单株薯块产量之间的关联度依次为单薯重＞蔓粗＞分枝数＞上薯数＞结薯数＞藤叶重＞蔓长＞上薯重，为选育高产的适宜秋栽的品种提供了重要理论依据。
In this paper, the principle of gray relational analysis was used to study the importance of the main traits that affect the yield per plant of the early sweet-flowering sweet potato strain through the correlation coefficient εi (k) and the correlation γi of the yield per plant. The results showed that the correlation between the main characters of early autumn sweet potato and the yield of single potato tuber was the order of single potato weight> crude product> number of branches> number of top potato> number of tuber> weight of vine leaves> length of vine The weight of potato provides an important theoretical basis for the selection of high-yielding varieties suitable for autumn planting.