黄瓜炭疽病在南方普遍发生 ,北方近年随着保护地面积的扩大 ,也有加重趋势。除黄瓜外 ,冬瓜、苦瓜、瓠瓜等葫芦科蔬菜及西瓜、甜瓜等也可受害发病。叶片、叶柄、茎、果等都可感染受害。幼苗多发生于子叶边缘 ,病斑呈半圆形 ,水渍状 ,渐由淡黄色变成灰色至深褐色 ,潮湿时长出粉 Cucumber anthracnose is common in the south. In recent years, with the expansion of protected areas in the north, there is also a tendency to increase. In addition to cucumber, melon, bitter gourd, gourd and other Cucurbitaceae vegetables and watermelon, melon, etc. can also suffer from the disease. Leaves, petiole, stems, fruit, etc. can be infected victims. More seedlings occur in the cotyledon edge, the lesion was semicircular, water-like, gradually from pale yellow to dark brown, moist flour