茶云纹叶枯病是一种发生普遍而又严重的病害。病菌以菌丝体在树上和土面病叶中越冬,通过雨水传播,潜育期5—18天。病害的流行与气候条件、茶树生长的关系密切。本病是一种高温高湿性病害,当旬平均气温>28℃,降雨量>40毫米,相对湿度>80%时,则下一句病害常常流行;凡受旱害、冻害、缺肥以及密植茶树发病较重。品种间发病程度有差季 Tea leaf blight is a common and serious disease. Mycotoxins in the tree and soil sick leaves in the winter, spread through the rain, the incubation period of 5-18 days. Disease prevalence and climatic conditions, tea tree growth are closely related. The disease is a high temperature and humidity disease, when the average temperature of more than 28 ℃, rainfall> 40 mm, relative humidity> 80%, then the next disease often popular; who suffer from drought, frost damage, lack of fertilizer and dense planting tea Serious onset. There is a difference between the varieties of disease season