魔芋软腐病和白绢病是魔芋生产上的两大病害,被称为魔芋的“两大克星”。这两大病害病菌传播快,发病率高,轻者致茎叶黄化,严重时致茎杆腐烂、植株倒伏、球茎腐烂,造成严重减产,甚至绝收。在生产中应采取“预防为主,综合防治”的方针及早严加防治,从而减轻危害。一、发病症状及特点1.魔芋软腐病:软腐病是细菌性病害,主要为害叶片、叶柄及球茎。苗期 Konjac soft rot and sclerotium is the production of konjac two major diseases, known as konjac “two major killer ”. The two major diseases of bacteria spread fast, high incidence of light to the stems and leaves yellowing, stem serious stem rot, plant lodging, decay of the stems, resulting in serious production cuts, or even absolute. In the course of production, the principle of “prevention first, comprehensive prevention and control” should be adopted to prevent and control as soon as possible so as to reduce the harm. First, the incidence of symptoms and features 1. Konjac soft rot: soft rot is a bacterial disease, the main damage to leaves, petioles and corms. Seedling