白绢病乃茉莉常见的病害之一。一般盆栽的较易发生,露天种的发病少。江西南昌地区10月上中旬至花树进入温室前的阶段为发病盛期,由于温度渐低,花盆内过多地浇水,盆土太潮湿而导致诱发该病。其症状:在接近盆土的花树茎基部,病组织初呈褐色,上生白色绢丝状的网膜,并向茎上部及土表扩展,以后逐渐变成黄色至褐色如油菜籽状的菌核。茉莉发病后,初期叶片由上向下依次脱落,随后枝梢干枯,最后整株枯死。 White silk disease is one of the common diseases of jasmine. Generally prone to potted plants, less incidence of open-pit species. Nanchang, Jiangxi Province in mid-October to spend trees before entering the greenhouse stage of the peak incidence, due to the lower temperature, excessive watering pots, basin soil is too damp and lead to the disease. Symptoms: At the base of the flower tree near the basin soil, the diseased tissue begins with a brown, supernatant white silk thread-like omentum and spreads to the upper part of the stem and to the earth’s surface and later gradually turns yellow to brown like rapeseed Sclerotinia. After the onset of jasmine, the initial leaves fall off from top to bottom, followed by dry branches, and finally the whole plant died.