一、病害1.根腐病。该病为半夏最常见的病害,多发生在高温、多湿季节和越夏种茎贮藏期间;主要危害半夏地下块茎,造成腐烂,随即地上部分枯黄倒苗直至死亡。防治方法:选用无病种进行栽培,雨季及大雨过后应及时疏沟排水;播种前用木霉的分生孢子悬浮液处理半夏块茎,或以5%的草木灰溶液浸种2小时,或用50%“多菌灵”加上40%的“乙磷铝”300倍液浸种30分钟, First, the disease 1. Root rot. The disease is the most common diseases of Pinellia, occurred in the high temperature, wet season and the summer stems during storage; the main damage Pinellia underground tubers, causing decay, and then the ground part of the yellowing down to the death. Prevention and treatment methods: Select the disease-free cultivation, rainy season and heavy rain should be timely dredging drainage; Trichoderma suspension before sowing with pinellia tuber treatment, or 5% of the ash solution soaking 2 hours, or 50 % “Carbendazim ” plus 40% “B phosphoricum ” 300 times soaking seed 30 minutes,