河南97个方言点儿化韵的演变情况表明韵尾具有舌尖-[+前]特征的韵母儿化后没有方言差异,韵尾具有舌尖-[-前]特征的韵母儿化后有方言差异。文章逐组讨论了后一类儿化韵的语音变异与可能的结构性因素的影响,包括基本韵母对变韵系统的制约、变韵系统自身的自组织以及变韵系统之间的相互作用等。 The evolution of rhyming in 97 dialects in Henan shows that there is no dialect difference after the rhyme has the tongue - [+ front] characteristic, and the rhyme has the tongue - [- former] characteristic. The article discusses the effects of phonetic variations and possible structural factors of the latter class of children on a group-by-group basis, including the constraints of basic vowels on the rhyming system, the self-organization of the rhyming system, and the interaction between the rhyming systems .