异菌脲防治烟草赤星病据通化市植保站黄存达等用５０％异菌脲４００～６２５ｐｐｍ对烟草ＮＣ８９品种进行防效试验，于发病初期首次施药，药后７天。防效８０％以上，药后１５天防效稍降；第一次施后隔１５天再次施药，药后７天防效在８６％以上，药后１５天为７８％～８... Iprodione prevention and treatment of tobacco brown spot disease According to Tonghua City Plant Protection Station Huang Cunda et al 50% iprodione 400 ~ 625ppm Tobacco NC89 varieties of anti-efficacy test, the first application in the early onset of drug, 7 days after treatment. Anti-effect of more than 80%, 15 days after the anti-drug effect decreased slightly; the first post-delivery 15 days after the re-application, 7 days after the anti-drug effect in 86% or more, 15 days after the drug 78% ~ 8 ...