进行了３种农药田间试验，结果表明，４０％菌核净５００倍液平均防效为９０．５％，４０％新星１００００倍液的平均防效为６１．５％，８０％大生—Ｍ４５８００倍液的平均防效为５２．７％。４０％菌核净５００倍液防治烟草赤星病效果最佳，其增产增质较为显著。 Three kinds of pesticide field experiments were conducted. The results showed that the average control effect of 40% sclerotium 500 times was 90.5%, and the average control effect of 40% nova 10000 times solution was 61.5%, 80% The average liquid control effect was 52.7%. 40% sclerotium net 500 times the best prevention and treatment of tobacco brown spot disease, its increase yield more significant increase.