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采用通径分析法、对单株茎数、株高、秧重、大中薯块数等与产量的相关系数进行了分析。结果表明，在所分析的几个性状中，以大中薯块数和主茎数对产量的形成起作用较大。它们对产量的决定度分别是57．7％和30．8％。各性状对产量的形成，除自身的直接作用外，还包括通过其它性状的间接作用，甚至有的性状则完全是通过影响其它性状而对产量形成起作用的。从相关系数上看，各性状的相关性都达到显著或极显著水平。出苗期与其它性状之间均呈极显著负相关。
Path analysis method was used to analyze the correlation coefficient between plant stem number, plant height, seedling weight, the number of large and medium potatoes and yield. The results showed that in the analysis of several traits, in order to block the number of large and medium tubers and the main stems on the formation of large amounts of production. Their determination of output is 57.7% and 30.8% respectively. In addition to their direct effects, the traits of the traits also include the indirect effects of other traits. Even some traits act on the yield formation entirely by affecting other traits. From the correlation coefficient, the correlation of each trait reached significant or extremely significant level. There was a significant negative correlation between seedling emergence and other traits.