Tobacco brown spot was a seriously common disease,an experiment on biological characteristics of Alternaria alternata was conducted to find the most appropriate growth environment of Alternaria alternate.The results showed that the growth of tobacco brown spot disease best in 25℃,darkness and humidity 100%,ZA medium was most suitable for Alternaria alternate growth,and OA medium was the most suitable sporulation of Alternaria alternate.The growth of Alternaria alternate increased with temperature and humidi...
烟草赤星病(tobacco brown spot)是烟草的主要病害之一,在全国各地均有发生,每年发病面积约占我国种植面积的30%~35%,2007—2009年全国烟区因赤星病造成的产值损失达41 856.47万元。贵州省处于云贵高原东部斜坡过渡带,92.5%的面积为山地和丘陵,属高原季风湿润气候,多种气候带并