蚕豆是各地冬种粮肥兼收的重要作物。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,稍后逐渐扩大成圆形赤色 Broad beans are important crops that are used throughout the winter for grain yield. The main diseases are: root rot is a fungal disease, the onset of disease, the most obvious feature is the lower edge of the leaves of plants darker, severe blackening charred whole leaf, bean production can be reduced 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 . Early onset of red spot, the leaves first produce small red spots, and later gradually expanded into a round red