略谈《广韵》反切中的低频上字

An Outline Study of the Low Frequency Fanqie Top Words in Guang Yun

《广韵》中有一些反切上字出现的频率很低,这首先是因为《广韵》反切来源的复杂,而整理者对全书反切并没有作完全的整理。其次,也是因为常用的上字不能给本字作上字,不得不临时换用一个上字,而这样换用的上字可能并不常用。最后,除去偶然因素,上字与被切字双声叠韵也是一个重要原因。

Guang Yun has some Fanqie top words. Their appearance frequency is very low. Firstly, it is because of Guang Yun＇s complication source of Fanqie, and the sorting of Fanqie to the whole book doesn＇t make a complete sorting. Secondly, it is also because of the common use of Fanqie top word can＇t give itself to be its top word and has to change to use another top word at the time. But this word combined is probably seldom used. Finally, in spite of the accidental factors, an important reason is that Fanqie top words and the sliced words are alliteration and assonance.