芋头在我国主要分布在南方,属于宿根性草本蔬菜作物。由于北方的气候条件和习惯的影响,种植面积较少。因此,虫害发生较轻,但病害主要是芋疫病在北方发生较重,甚至,可达到90%的发病率。严重影响到球茎的产量和品质。在本地区引种试种期间均有发生。(一)病害特点芋疫病主要危害芋叶片和少量危害到球茎。叶片上初生黄褐色圆形斑点,然后逐渐扩大为明显的浓 Taro in China is mainly distributed in the south, belong to the perennial herb vegetable crops. Due to the climatic conditions and habits in the north, there is less planted area. Therefore, the occurrence of pests is light, but the disease is mainly taro epidemic occurred in the north heavier, and even up to 90% of the incidence. Seriously affect the yield and quality of the bulb. Introduced in the region during the trial have occurred. (A) disease characteristics Taro disease the main hazards of taro leaves and a small amount of damage to the bulbs. Pale yellow brown newborn spots, and then gradually expanded to a significant concentration