焦甜香型烤烟优化施肥模式研究

摘要

采用三因素二次D-饱和最优设计,通过田间试验,研究了焦甜香型烤烟品种云烟97的优化施肥模式.结果表明:氮、磷、钾肥施用量主要影响烤后烟叶的产量、产值和感官质量;在产值达到40000元/hm2以上条件下,优化施肥量为N 91.60～ 100.78 kg/hm2、P2O5 177.40～193.17 kg/hm2、K2O 212.38～247.75 kg/hm2;在感官质量评分75分以上条件下,优化施肥量为N 88.80～ 101.00 kg/hm2、P2O5 189.21 ～ 205.80 kg/hm2、K2O 236.27 ～ 269.89 kg/hm2.综合考虑烟叶香型特色和烟叶质量,四川省宜宾市焦甜香型烤烟的最优施肥量为N 91.60～100.78 kg/hm2、P2O5 189.21 ～ 193.17 kg/hm2、K2O 236.27～ 247.75 kg/hm2.%The optimum fertilization mode for burnt-sweet-aroma-style flue-cured tobacco variety Yunyan 97 was studied through field test by adopting three-factor quadratic D-saturate optimal design.The results showed that the application rate of nitrogen,phosphorus and potassium fertilizer mainly affected the yield,output value and sensory quality of flue-cured tobacco.Under the condition that the output value exceeded 40000 yuna/hm2,the optimal fertilizer application rates were N 91.60～ 100.78kg/hm2,P2O5 177.40 ～ 193.17 kg/hm2,and K2O 212.38～ 247.75 kg/hm2.Under the condition that the score of sensory quality evaluation exceeded 75,the optimal fertilizer application rates were N 88.80～ 101.00 kg/hm2,P2O5 189.21 ～ 205.80 kg/hm2,and K2O 236.27 ～ 269.89 kg/hm2.Comprehensively considering the aroma-style characteristics and sensory quality of tobacco leaf,we thought that the optimum fertilizer application rates for burnt-sweet-aroma-style flue-cured tobacco in Yibin city of Sichuan province were N 91.60～100.78 kg/hm2,P2O5 189.21～ 193.17 kg/hm2,and K2O 236.27～247.75 kg/hm2.