烟草赤星病的发生及综合防治

The Occurrence and Integrated Management Tobacco Brown Spot

烟草赤星病是烟草成熟时期发生的一种由交链孢菌(Alternariasp.)引起的真菌性叶斑病害,使烟叶的产量和品质大幅度下降。本文对烟草赤星病菌(Alternariaalternata)的生物学特性、病害的发生条件、症状、流行规律、影响因素及防治措施等方面作了总结阐述,为有效防治赤星病提供科学依据和措施。

Tobacco brown spot is a kind of fungal leave spot disease, it recurred by Alternaria sp. when tobacco is ripe, and make the quantity and quality drop. This paper summarizes the biological trait of Alternaria alternata (Freis)keissler and the condition、 symptom、epidemic rule、influential factors and prevention methods of Alternaria alternata, and offers scientific basis and measures.