Abstract: A field experiment was carried out to study the occurrence of rice sheath blight. The results showed that different varieties of Wuyunjing series have difference sensitivity to rice sheath blight. The rice sheath blight of Wuyunjing 21, Wuyunjing 24 and Wuyunjing 27 spread quickly under high temperature and high humidity conditions, these varieties belong to susceptible varieties; the rice sheath blight of Wuyunjing 29, Wuyunjing 30 and Wuyunjing 31 were light, these varieties belong to resistant varieties; the other varieties belong to middle susceptible varieties.

Key words: Wuyunjing, rice sheath blight, the difference of sensitivity

摘要： 通过分品种分小区种植、系统调查了水稻纹枯病的发生情况。结果表明，不同武运粳系列品种对纹枯病的敏感度有差异，武运粳21号、武运粳24号、武运粳27号在高温高湿条件下纹枯病发展蔓延较快，属感病品种；武运粳29号、武运粳30号、武运粳31号纹枯病发生较轻，属抗病品种；其余品种为中感品种。

关键词: 武运粳, 纹枯病, 敏感性差异