影响陕西烟草蚜传病毒病发生因子的研究

研究结果表明,陕西烟草蚜传病毒病的发生与有翅蚜的第一次迁飞期的长短、早晚和有翅蚜量均呈显著正相关;同一烟草品种移栽越早,大田发病越重;不同烟草品种间存在不同的耐病性;越冬蚜量和越冬毒源似乎不是影响烟草蚜传病毒病的主要因素;有翅蚜的第二次迁飞与烟草蚜传病毒病的相关性不大。文中还分析了影响陕西烟草蚜传病毒病的其它因素,如气象因素、栽培条件、烟草生长阶段抗病性、烟蚜的越冬寄主或中间寄主、烟蚜的天敌因素对烟草蚜传病毒病的影响。 

Study on factors affecting the incidence of tobacco virus diseases transmitted by aphis in Shaanxi

Research results shown that the incidence of tobacco virus diseases spread by aphis was highly correlated with the starting time and the length of the first migration period of alate aphis and the amount of alate aphis in this period. The earlier the tobacco seedlings were transplanted, the severer the virus diseases. The tolerance of varieties tobacco breeds to virus shown obvious difference. It seemed that the occurence of tobacco virus diseases has nothing to do with the amount of over winter aphis and virus over wintered and the second migration of aphis. Other factors affecting tobacco virus disease were also discussed.