黄瓜黑星病是国内植物检疫对象。这种病害首先从东北三省被发现,此病屡禁不止大有不断扩展之势。近几年在北京、河北、内蒙、山东、山西、海南等相继发生流行。目前随保护地黄瓜大面积种植,从外地引种也越多,病害随种子传播,造成在我国各地均有发生,且危害逐年加重。黄瓜黑星病不但严重影响 Scab is a domestic plant quarantine object. This disease was first discovered in three provinces of northeast China. The disease has been constantly expanding despite repeated acts. In recent years in Beijing, Hebei, Inner Mongolia, Shandong, Shanxi, Hainan and other epidemic occurred one after another. At present, large areas of cucumber are planted with protected areas, and the more plants are introduced from other places, the disease spreads with the seeds, resulting in occurrence in all parts of China and the harm is increasing year by year. Cucumber scab not only seriously affected