tobacco virus spread by aphids 烟草蚜传病毒病
The main species of tobacco virus spread by aphids in Shaanxi included cucumber mosaic virus (CMV), tobacco etch virus (TEV) and potato Y virus (PVY);
烟草蚜传病毒病的主要类群有烟草黄瓜花叶病毒（ CMV）、烟草蚀纹病毒（ TEV）、马铃薯Y病毒（ PVY）。
During the tobacco hardening period bed of tobacco seedling was the falling target of alate aphids and was the main resource of tobacco virus spread by aphids.
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。
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