烟草赤星病是我省的主要病害 ,随着烤烟施肥量的增加 ,采收成熟度的提高 ,发病加重 ,严重田块发病率高达 80 % ,每一株烟上的病斑多达上百个 ,造成烟叶品质下降 ,每年给烤烟生产带来很大的损失〔1〕。另一方面 ,目前防治烟草赤星病的药剂还不多〔2〕,常用药剂还是菌核净、大力 Tobacco brown spot disease is the main disease in our province. With the increase of the amount of tobacco fertilizer applied, the maturity of harvest increases, the incidence increases. The incidence of serious field is as high as 80%. There are hundreds of spots on each tobacco , Resulting in decreased quality of tobacco leaves each year to bring great loss of flue-cured tobacco 〔1〕. On the other hand, the current control of tobacco brown spot disease is not much medicine [2], commonly used agents or sclerotia net, vigorously