Effect of the Lolium multifolrum as green-fertilizer covered on the development and anti-disease ability of flue-cured tobacco was studied. The result showed that Lolium multifolrum green-fertilizer covered caused bad influence on flue-cured tobacco development, and incurred that the flue-cured tobacco yield and valve were better; the effect was more big when the yields of Lolium multifolrum was more high; but Lolium multifolrum green-fertilizer covered could develop the anti-disease ability to Black shank ...