甜瓜细菌性角斑病是危害甜瓜的叶片、叶柄、茎、卷须和果实的一种细菌性病害，这种病菌除侵染甜瓜外还侵染葫芦、西葫芦、丝瓜、西瓜等，严重影响产量和品质。 　　一、发病症状 甜瓜细菌性角斑病从苗期至成株期均可受害。子叶染病，初为水浸状斑，渐变淡褐色，病斑受叶脉限 Melon bacterial angular leaf disease is a bacterial disease that damages the leaves, petioles, stems, tendrils and fruits of muskmelon. In addition to infecting muskmelon, this bacterium infects cucurbits, zucchini, sponge gourd and watermelon, which seriously affect the yield and quality. First, the incidence of symptoms Melon bacterial angular leaf disease can be affected from seedling to adult stage. Cotyledonary disease, the initial flooding-like spot, gradually pale brown, lesion by the veins