近年来,保护地黄瓜种植发展很快,满足了人民生活需要。但是,黄瓜病害也越来越重,一般减产10%,严重的可达30%,现将细菌性角斑病、黑星病、炭疽病的症状识别与防治技术介绍如下:1.症状识别(1)黄瓜细菌性角斑病叶片病斑受叶脉限制,病斑呈多角形,前期淡褐色,后期灰白色,分泌出乳白色的菌脓,病斑往往穿孔。 In recent years, cucumber planting in protected areas has developed rapidly and has met the needs of people’s lives. However, the cucumber disease is also getting heavier and heavier, the general reduction of 10%, a serious up to 30%, now the bacterial angular leaf spot, scab, anthrax symptoms identification and prevention techniques are as follows: 1. Symptom identification 1) Cucumber bacterial angular leaf spot leaf lesions by the veins, lesions were polygonal, pre-light brown, gray later, milky white fungus secretion, lesions often perforation.