Comparative Analysis on Sun-cured Tobacco Floating Seedling System and Normal Seedling System in Shifang City,Sichuan Province

The application effect of floating and normal seedling system in sun-cured tobacco Shiyan No.1 was comparatively analyzed.The results showed that floating seedling can effectively shorten the growth period of tobacco and lower the cost and work intensity than normal seeding system due to stronger vigor of seedlings and shorter growth period.The tobacco mosaic virus was reduced and production value increased largely by the application of the floating seedling technology.Therefore,it is effective and useful for the floating seedling system to use in production of sun-cured tobacco.