Effects of Different Nitrogen Rate on Yunyan85' s Growth, Yield and Quality in Panzhihua Tobacco Area
Medium fertility plots in Panzhihua tobacco area were selected to be the experimental plots. Effects of different nitrogen rates on tobacco ' s growth, yield and quality were studied under the condition of fixed phosphorus and potassium fertilizer. The results showed that when the nitrogen rate increased within in 0 - 7 kg/667m2, the growth of flue-cured tobacco was promoted and the production, output and proportion of superior tobacco were increased, also the chemical composition was coordinated. While within the rage of 7 - 10 kg/667m2 ,the in-creasment of nitrogen reduced the production,output .chemical quality and proportion of superior tobacco,which affect the availability of tobacco industry. In comprehensive measurement, the optimal amount of nitrogen rate of Yunyan 85 in Panzhihua tobacco area was 7 kg/667 m2 under the experimental condition.
NETL
NSTL
万方数据
维普
