There were no significant difference that the impact of different types of nitrogen fertilizer on Weixian radish formation of leaf area.
不同氮肥种类对潍县萝卜叶面积形成的影响差异不明显。
The results of principal components analysis showed that color , characters of root and leaf are the decisive factors affecting radish germplasm classification according to morphological characters.
主成分分析表明，利用形态性状对萝卜分类时，首先考虑的是颜色，其次是根的性状，最后是叶的性状。
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