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蚕豆是各地冬种粮肥兼收的重要作物。目前已陆续进入开花结荚期,正是防治蚕豆多种病害夺高产的关键时期,其主要病害有: 根腐病。是一种真菌病害,发病后,最明显的特征是植株下部叶片的叶缘变黑,严重时整叶变黑焦枯,可使蚕豆减产30%～50%。在防治上,如果病害已发生,可及时用灰粪拌磷、钾肥点穴或开沟埋施,并用50%多菌灵或70%甲基托布津1000倍液淋穴,有很好的防治效果。赤斑病。发病初期,叶片上先产生赤色小斑点,梢后逐渐扩大成圆形赤色斑点,在冬春温暖潮湿时,病斑迅速扩展,病叶变枯萎,最后枯死。防治此病应采取轮作、开沟排渍水、增施磷钾肥或草木灰、火土灰等措施进行预防。药剂防治可选用50%多菌灵100克或70%甲基托布津70克兑水50公斤全面喷施。
Broad beans are important crops that are used throughout the winter for grain yield. Now it has gradually entered the flowering pod stage, it is the critical period for the prevention and treatment of a wide range of diseases of Vicia faba, its main diseases are: root rot. Is a fungal disease. After the onset of disease, the most obvious feature is that the leaf margin of the lower leaves of the plants becomes black. In severe cases, the whole leaves become black and scorched, which can reduce the yield of broad beans by 30% to 50%. In the prevention and control, if the disease has occurred, the timely use of lime mixed with phosphorus, potassium fertilizer points or trenching embedding, and 50% carbendazim or 70% thiophanate-methyl 1000 times liquid hole, a very good control effect . Red spot. Early onset, the leaves first produce small red spots, the tip gradually expanded into circular red spots, warm and humid in winter and spring, the rapid expansion of disease spots, diseased leaves withered, and finally died. Prevention and treatment of the disease should take rotation, ditching row of waterlogging, by the application of phosphorus and potassium or ash, fire ash and other measures to prevent. Pharmacy control optional 50% carbendazim 100 grams or 70% thiophanate-methyl 70 grams of water to fully spray 50 kg.