本文研究了柑桔27个种类及品种的根皮率。结果表明:柑桔砧木的根皮率不仅与其本身的树高呈极显著的负相关,而且还与其嫁接品种的生长势呈显著负相关,证明根皮率法可用于预测柑桔砧木的矮化效应;进一步论证了测定根皮率的最适根粗范围为2-3毫米。并根据根皮率的大小,排列了所测23个柑桔种类及品种的矮化序列。 This paper studied the citrus root bark rate of 27 species and varieties. The results showed that the root bark rate of citrus rootstock was not only significantly negatively correlated with its own tree height but also negatively correlated with the growth potential of its grafted varieties. It was proved that root bark rate could be used to predict dwarfing of citrus rootstock Effect; Further demonstration of the determination of root bark rate of the most appropriate root range of 2-3 mm. According to the size of root bark, the dwarfing sequences of 23 citrus varieties and varieties were arranged.