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云南烟草丛枝症病害是经烟蚜和烟盲蝽传染的病毒病， 在 “治虫防病”为主的防治技术的基础上， 本文研究网罩隔离技术培养无毒烟苗应用于大田控制病害的方法， 并进行一定面积的技术示范工作， 结果表明： 网罩隔离育苗在田间成功地培育出无毒烟苗， 病苗率为０２３ ％ ～３６ ％ ， 较对照下降约７５ ％ ～９５ ％ ， 移栽后结合优质烟栽培技术， 封顶时烤烟的田间发病率为２ ～５ ％ ， 说明以无毒苗应用技术为核心、辅之介体控制和病苗拔除等技术的综合防治体系能够有效和稳定地控制烟草丛枝症病害的危害．
Tobacco witches bush disease is a virus disease infected by tobacco aphid and Tobacco Myzus, and based on the prevention and control technology based on “pest control and disease prevention”, this paper studies the technology of net cover isolation to cultivate non-toxic tobacco seedlings for field control disease The results showed that: the net cover isolation nursery successfully nurtured non-toxic tobacco seedlings in the field, the disease-free vaccine rate was 023% ~ 36%, which was about 75% lower than that of the control. ~ 95%, after transplanting combined with high-quality tobacco cultivation techniques, the top incidence of flue-cured tobacco field incidence of 2 to 5%, indicating non-toxic vaccine application technology as the core, supplemented by the media control and removal of the disease and other technologies integrated control The system can effectively and stably control the damage of tobacco bush disease.