绵疫病俗称“水烂”,是茄子的主要病害之一。此病蔓延迅速,严重时可使成片果实腐烂税落,给生产上造成巨大损失。主要危害果实,受害以下部老果为多,病斑初期为水浸状近圆形黄褐色或暗褐色,扩大后稍有凹陷。温度高时,病斑会发展到全株,病果极易腐烂脱落。若条件适宜,也能侵害茄子的叶及花。绵疫病原菌在土壤中和病株残体上越冬,翌年借雨水溅射到茄果上危害;病菌靠风雨进行传播,高温、高湿、密植不通风、雨后暴晴发病最盛。果实发病高峰紧接降雨高峰之后,一般田在大雨后2～3天即可出现大量烂果,其防治方法: As one of the main diseases of eggplant, it is commonly known as “rotten water”. The rapid spread of the disease, severe decay can turn into pieces of the film tax losses to the production of huge losses. The main damage to the fruit, the victim to the Ministry of the old fruit as much, the initial lesion was nearly round brown or dark brown, expand slightly depressed. High temperature, the lesion will develop to the whole plant, the disease can easily decay. If the conditions are right, but also against eggplant leaves and flowers. Phytoplasma disease in the soil and plant debris overwinter, the following year by rain splashing on the eggplant harm; bacteria spread by wind and rain, high temperature, high humidity, close planting is not ventilated, the most stormy after the onset of rain. Fruit peak incidence peak immediately after the rain, the general field 2 to 3 days after heavy rain can appear a lot of rotten fruit, and its prevention and treatment methods: