一、叶部病害I．蛇眼病。症状：大多发生在老叶L。病斑圆形，八径2～5毫米，中央淡褐色至灰白色，边缘紫红色，似蛇眠状、表1所有白色粉霉。防治方法：发病初期喷布SOO～70O倍7引（由陆情可湿性粉剂液；或80O倍10％多菌灵胶悬剂液，IO天后再喷1次，并及时摘除病叶集中处理。2· First, leaf disease I. Snake eye disease. Symptoms: Mostly occur in the old leaves. Disease spot round, eight diameter 2 to 5 mm, the central light brown to off-white, purple edge, like a snake-like, Table 1, all white powdery mildew. Prevention and treatment methods: the early onset of the spray SOO ~ 70O times 7 cited (from the land wettable powder solution; or 80O times 10% carbendazim suspension solution, IO days and then spray 1, and timely removal of sick leaves focus on treatment. 2·