Relationship of nutrition status with smoking quality of fluecured tobacco and balanced fertilization in Lichuan City

Hu Guosong1 Peng Chuanxin2 Yang Linbo2Wei Wei2 Zhang Guanghui3 Chen Minghui3(1Institute of Soil Science,Academia Sinica Nanjing 2Wuhan Tobacco(Group)Corporation 3.Lichuan Tobacco Production Company of Hubei Province)

Fluecured tobacco;Nutrition;Flavour,taste;Fertilization

hemical analysis,smoking analysis and statistics were used to evaluate the nutrition status of fluecured tobacco of Lichuan City and the results showed that in current fertilization and management conditions,the N content of Lichuan tobacco leaf was a little lower,P content was too high.27.7% tobacco samples was deficiency of Mg,21% tobacco samples was short of Cu,some samples are short of B.Reducing sugar content was very good,but too low nicotine content resulted in the disorder of N/Nicotine ratio and Sugar/Nicotine ratio.The main reasons of the disorder were too low N and Cu contents and too high P and Fe contents.Smoking quality of tobacco leaf was very significantly positively correlated with nicotine content,positively correlated with N,K,Cu,Mg,S and Mn,very significantly negatively correlated with Fe content,and negatively with B and Zn.Path analysis showed that the effect of nutrients on smoking quality decreased in the order of P>Fe>N>B>Ca>Zn>K>Cu>Mg>Mn>S,among which increasing N,Cu,Ca,K,Mn,and Zn content improved smoking quality,and increasing P,Fe,B,Mg,and S content decreased smoking quality.It was suggested to increase the application amount of N and Cu,decreasing P application amount,and taking measures such as applying lime to reduce the uptake of Fe by fluecured tobacco.