玉米矮花叶病是世界上为害最严重的一种病毒病害。目前世界上凡是种植玉米的国家和地方都有不同程度的发生。我国自1968年在河南新乡和安阳、河北邯郸一带首先暴发流行以来逐年扩展,尤其是近几年,扩展迅猛,为害加重,已成为遍及全国各主要玉米产区重要病害。山西省1994～1996年玉米矮花叶病发生严重,阳泉 Maize dwarf mosaic disease is the most damaging virus disease in the world. At present, all countries and places that plant corn in the world have different degrees of occurrence. Since 1968, the first outbreak in the areas of Xinxiang and Anyang in Henan, and Handan in Hebei Province has been expanding year by year. Especially in recent years, China has expanded rapidly and worsened. It has become an important disease spreading all over the country in all major maize producing areas. Shanxi Province 1994-1996 maize dwarf mosaic disease serious, Yangquan