Accumulation regulation and effect of different fertilization on reducing sugar and total sugar of the Sun-cured Red Tobacco

To inquisition the best combination of N,P2O5,K2 of the Sun-cured Tobacco import the inherent quality,studied the effect of accumulation rule of the Sun-cured Red Tobacco and the ratio of different fertilization of sugar in Jilin.The results showed that reducing sugar and total sugar was accumulated rapidly since 30 days after transplanting in leaf,and since 40 days after transplanting in root and stem.More than 50% of reducing sugar and total sugar were started to accumulate since maturity.The peaks of daily accumulations of reducing sugar and total sugar were appeared at sixtieth day and seventh after transplanting,respectively.Sugar in tobacco leaves is the highest,stem times,roots for at least.It is to say variety Yanshai No.5 is the best at the combination of N,P2O5,K2 which the nitrogen level is 100 kg/hm2.