赣语余干方言的入声以其独特的鼻音尾吸引着学界的关注。本文在对余干县城和石口镇两个方言点多名发音人调查的基础上,讨论了余干方言入声的性质。调查表明,余干入声鼻尾占整个入声音节的比例较稳定,且承担了阴入和阳入的音高区别。但是,此鼻尾只出现在停顿前,且阳入字在停顿前也常常不带鼻尾;另一方面,在后接余干方言中唯一的高调阴去调时,入声会导致阴去变调,且阴去变成的调与入声单念时所带鼻尾的声调一致。我们认为,余干方言在历史上可能经历了一个调头下降的过程,致使原来的音高信息主要体现在音节的后半段,而入声字为保持短促,又逐渐舍弃了其后半段,其区别性音高遂成为浮游调。这一猜想在对余干石口镇的调查中得到了证实。因此,余干入声鼻尾的性质是承载浮游调的浊鼻音除阻,它在音系上有严格的出现环境,最好不要分析为字音的底层。 The accents of Gan dialect Yugan dialect attract the academic attention with its unique nasal consonant. Based on the investigation of several speakers in Yugan county and ShiKou town, this article discusses the nature of Yugan dialect. Surveys show that the proportion of Yugan nasal constellations occupying the entire syllable is relatively stable, and assumes the distinction of overcast and overtone. However, this nose only appeared before the pause, and the Yang character often did not have a nose tail before the pause. On the other hand, when the only high-key Yin tone to follow in the Yugan dialect, Tonal, and Yin to become the tune into a single tone with the nasal tail tone consistent. In our opinion, the Yugan dialect may have undergone a turnaround process in history. As a result, the original pitch information is mainly reflected in the latter half of the syllable. However, in order to maintain shortness, the entering voice gradually abandons its second half, Its distinctive pitch then became a float adjustment. This conjecture was confirmed in a survey of Yugan stone town. Therefore, the nature of the end of the sound into the nasal tail is boring tune turbot nasal block, it has a strict environment in the phonology, it is best not to analyze the pronunciation of the underlying.