茶园赤星病、白星病属低温高湿性病害，在高山茶区发生较普遍，春秋多雨季节发生最多，夏秋高温干旱季节发生较少，主要危害幼嫩芽叶和成叶。茶树受害后，芽叶和新梢生长不良，芽重减轻，产量降低，严重时大量落叶，树势衰弱。另外，茶叶品质也有很大影响，病叶制成的干茶，味 Tea plantation brown spot disease, white star disease is a low temperature and humidity disease, occurs in the mountain tea area is more common in spring and autumn and rainy season occurs the most, summer and autumn high temperature and drought seasons occur less, the main damage to young shoots and leaves. Tea tree victims, buds and shoots poor growth, bud weight reduction, yield reduction, a large number of severe deciduous, tree weak. In addition, the quality of tea also has a great impact, sick leaves made of dry tea, taste