玉米青枯病(茎腐病)是世界性玉米产区重要病害之一。近年来,国内有发展和加重的趋势,并成为抗病育种的重要障碍。本文简要报道1981～1984年对陕西关中地区玉米青枯病的病原菌及其致病性的研究结果。1981～1984年在关中地区24个县、市采集典型病株,以茎基髓部标样,PSA 分离 Corn bacterial wilt (stalk rot) is one of the most important diseases in the world corn producing area. In recent years, there has been a trend of development and aggravation in China and has become an important obstacle to disease breeding. This article briefly reports the results of the research on the pathogens and their pathogenicity of corn bacterial wilt in Guanzhong area from 1981 to 1984. From 1981 to 1984, the typical diseased plants were collected from 24 counties and cities in Guanzhong region.