马铃薯早疫病又称夏疫病、轮纹病,是马铃薯上最常见的病害之一,在我国南北方马铃薯种植地区都普遍发生为害,常造成枝叶枯死,明显影响生产。近几年,此病有进一步加重的趋势,在部分地区的为害程度不亚于晚疫病,并且除为害马铃薯外,还可侵害其它几种茄科蔬菜。 Early blight of potato, also known as summer blight, rotundity, is one of the most common diseases on potatoes. It is commonly harmed in the potato growing areas in north and south of our country. It often causes the branches and leaves to die and obviously affects the production. In recent years, the disease has the tendency of further aggravating. In some areas, the degree of damage is no less than that of late blight. In addition to harming potatoes, it can also infringe on several other solanaceous vegetables.