早疫病是茄子的一种重要病害。保护地栽培发病率高,特别是苗期受害尤为严重。可侵染叶、茎和果实。从苗期即可开始危害,成株期也可发病。主要危害叶片,造成早期落叶,果实产量受到影响,应及早防治。发病症状嫩叶发病一般先从叶尖部先发病,病斑呈褐色,有霉层。成叶发病叶面上先出现褪绿点状斑,后变为灰褐色,病斑圆形或近圆形,边缘褐色至黑色,中央灰白色,具同心轮纹, Early blight is an important disease of eggplant. Protected cultivation of high incidence, especially in the seedling damage is particularly serious. May infiltrate leaves, stems and fruits. From the seedling stage can begin to harm, adult stage can also be disease. The main hazard leaves, resulting in early deciduous, fruit yield affected, should be early control. The incidence of symptoms of young leaves generally first onset from the tip, lesions were brown, moldy layer. Into the leaves of the disease appeared first chlorotic spot-like spots, after turning into a gray brown, spotted round or nearly circular, brown to black edge, the central gray, with concentric rings,