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莲藕褐斑病:是莲藕常见的一种叶部病害,在叶片上产生淡褐色病斑,使病叶局部干枯。防治方法:合理密植,确保藕田通风透光;适当增施磷、钾肥,提高植株抗病性;及时清除病株残体,防止病害传播蔓延。发病初期,及时。用25%多菌灵600倍液或75%百菌清1000倍液喷雾。莲藕黑斑病:又叫褐纹病,仅发生在叶片上,严重时病斑汇合,叶片枯黄。防治方法:冬季清除田间病株残叶,并集中烧毁。发
Lotus leaf brown spot disease: Lotus leaf is a common disease of leaves, leaves in the light brown spot, the diseased leaves partially dry. Prevention and treatment methods: Reasonable and close planting, to ensure the lotus field ventilation and transparency; appropriate phosphorus and potassium fertilizer to improve plant disease resistance; timely removal of diseased plants to prevent the spread of disease spread. Early onset, in time. With 25% carbendazim 600 times or 75% chlorothalonil 1000 times spray. Lotus black spot disease: also known as brown-spot disease, occurs only on the leaves, severe disease spots confluence, yellow leaves. Prevention and treatment methods: remove field leaves in winter and concentrated burned. hair