Effects of Top-dressing to Basal Ntrogen on Growth Yield and Quality of Flue-cured Tobacco

Under cropland conditions,the impacts of top-dressing to basal nitrogen fertilizer used on the flue-cured tobacco's quality was analyzed.The results showed that the base fertilizer or top dressing account for 60% and 40% apply top dressing in 30 days after transplanting can improve the volume of production and change the quality of tobacco leaves.Compared with totally for base fertilizer or base fertilizer accounts for 40% and 60% topdressing,the production of tobacco,the proportion of medium and good,average price and output are increased in different degrees,the proportion of chemical components are more coordinated,the quality of appearance are more well-distributed and internal quality are more consummate.