黄瓜棒孢叶斑病(Cucumber Corynespora target leaf spot),又名靶斑病、褐斑病、小黄点病,是一种喜欢高温高湿的病害,主要危害叶片,严重时蔓延至叶柄、茎蔓和果实。以保护地受害严重,多发生于黄瓜生长中后期,引起落叶。发病初期病斑表现为多角形,易与黄瓜角斑病和霜霉病混淆,发病后期又与炭疽病有许多相似之处。一般病田叶发病率为10%~25%,严重时可达60%~70%。 Cucumber Corynespora target leaf spot (Cucumber Corynespora target leaf spot), also known as target spot disease, brown spot, small yellow dot disease, is a kind of disease like high temperature and humidity, the main damage to leaves, in severe cases spread to petiole, stem Man and fruit. Serious damage to the protection, and more occurred in the late cucumber growth, causing deciduous. Lesions at the onset of the performance of polygonal, easy and cucumber angular leaf spot and downy mildew confused, late onset and anthrax have many similarities. The incidence of general disease leaves 10% to 25%, severe up to 60% to 70%.