青枯病是蔬菜(尤其是瓜类)常见的病害,也是重要的病害,全国各地均有发生。青枯病是一种危害全株性的土传、细菌性病害,主要靠灌溉水传播。一般在幼苗期较少显症,多在现蕾开花后表现急性显症。染病植株比健株稍矮,叶色较淡,在晴天高温的日间,病株茎和叶片自上而下萎垂,晚间和清晨尚可恢复,经34天或更短时间全株茎叶萎蔫枯死,但病株在短 Wilt disease is a common disease of vegetables (especially melons), and is also an important disease that has occurred all over the country. Bacterial wilt is a soil-borne, bacterial disease that is harmful to the whole plant, and mainly spreads by irrigation water. Generally less seedlings in the seedling symptoms, and more after the emergence of acute flowering conspicuous symptoms. Infected plants slightly shorter than the healthy plants, leaf color lighter, sunny day in the hot, diseased plants stems and leaves wilting from top to bottom, night and early morning can still be restored, after 34 days or less whole plant stems and leaves Withered dead, but the diseased plants in short