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在烟草炼苗期采用杀蚜剂、病毒抑制剂、纱网罩烟苗 ,田间生长期采用杀蚜剂、病毒抑制剂和不同移栽期防治烟草蚜传病毒病。结果表明 ,杀蚜剂防治烟草蚜传病毒病效果较差 ,病毒抑制剂效果一般为 6 0 %左右 ;随移栽期推迟 ,烟草蚜传病毒病发病显著减轻。炼苗期烟草苗床是传毒介体有翅蚜着落的靶子中心 ,是烟田蚜传病毒病的主要初侵染源 ,为防治烟草蚜传病毒病的关键时期。用纱网罩烟苗能阻止传毒介体与烟草接触交叉传染 ,结合适时喷施病毒抑制剂 ,能有效防治烟草蚜传病毒病发生 ,同时能有效保护环境和介体天敌
The aphids, virus inhibitors and gauze cover tobacco seedlings were used during the tobacco refining stage. Aphids, virus inhibitors and different virus-resistant stages were used in the field to control tobacco aphids. The results showed that the effect of aphides on the control of tobacco aphids was poor, and the effect of virus inhibitors was generally 60%. With the delay of transplanting, the incidence of tobacco virus aphid-borne viruses was significantly reduced. The tobacco seedling bed during the refining stage was the target center of the aphid-larvae that was the poison mediator. It was the main source of early-stage infection of aphid-borne viruses and was the key period to prevent and cure the tobacco aphid-borne virus disease. With gauze cover tobacco seedlings can prevent the transmission of infectious agents and tobacco in contact with cross-infection, combined with timely spraying of virus inhibitors, can effectively control tobacco aphid-borne virus disease, and can effectively protect the environment and the media predators