Effects of Intertillage and Film Uncovering on Yield and Quality of Oriental Tobacco

The effects of intertilling and film uncovering at different growth stages on the yield and quality of oriental tobacco were experimented in Baoshan oriental tobacco growing areas.The results showed that the contents of nicotine and ether extracts in oriental tobacco were increased by film uncovering and intertilling, which enabled the main chemical components in better harmony and enhanced smoking quality of tobacco while comparing with the contrast (film covered and no intertillage).The comprehensive yield and quality evaluations of oriental tobacco suggested the best treatment:first intertilling 25 days and second intertilling 50 days after transplant, then uncovering film and hilling up to 10cm.