茶黑腐病(Corticium invisum Pet-ch)是我区发生十分普遍的茶树茎叶病害,随着茶树年令的增长,复盖面积密度增大,病原的逐渐积累,为害也日趋严重。据我们调查,茶黑腐病株发病率在20—35%,严重的茶园发病率达50%以上。我们在病害发生高峰期进行病株与健株芽梢密度对比调 Tea black rot disease (Corticium invisum Pet-ch) is a very common occurrence of tea tree stem and leaf diseases in our district. With the annual growth of tea trees, the covered area density increases, the pathogen gradually accumulates, and the damage is also worsening. According to our investigation, the incidence of tea black rot strains in 20-35%, the incidence of serious tea more than 50%. At the peak of disease occurrence, we compared the density of shoots with that of healthy plants