近年来炭疽病、疫病已严重影响许多地方芋正常生长。由于芋田需常浇水、灌水,田间湿度大,小气候十分有利于病害发生,一旦错过防治适期,在暴发后用药,不但防效差,而且产量损失重。芋炭疽病主要危害叶片受害初期形成淡黄色水渍状小点,往后形成褐色略凹陷圆形病斑,四周有黄色的变色圈,病斑后期干缩成羊皮纸状、很薄,易破裂穿孔;病情加重后,多个病斑相互连接成不规则 In recent years, anthrax and epidemics have seriously affected the normal growth of taro in many places. As taro field watering, irrigation, field humidity, the microclimate is very conducive to disease occurs, once missed the appropriate period of control, after the outbreak of medication, not only poor control efficiency, and heavy production loss. Taro anthracnose main damage to the early victims of the formation of light yellow water-like dots, the formation of brown slightly concave round after the lesion, surrounded by yellow discoloration circle, lesion shrink into parchment late, very thin, easy to rupture Perforation; exacerbations, the multiple lesion interconnected into irregular