打顶时间和留叶数对K326产质量的影响

Effects of Topping Time and Remained Leaf Numbers on Yield and Quality of Flue-cured Tobacco K326

[目的]研究不同打顶时间和留叶数对K326产量和质量的影响,为优化K326栽培措施提供参考依据。[方法]通过田间试验,设9个不同打顶时间和留叶数处理,对烤烟农艺性状、经济性状、内在化学成分、外观质量、感官评吸质量进行分析。[结果]随着留叶数的增加,烟株株高、产量增加,叶面积、烟碱、总钾含量显著降低;产值、均价、上等烟比例以留叶数16片处理最好;初花期打顶,产量、产值、均价、上等烟比例、烟叶感官质量最高;总糖、还原糖含量以留叶数16片处理最高。[结论]综合农艺性状和经济性状分析显示,在皖南烟区,初花期打顶、留取16片有效叶有利于提高K326产质量。

[Objective] To study the effects of different topping time and remained leaf numbers on yield and quality of flue-cured tobacco K326, and to provide the reference basis for optimizing cultivation technique of K326.[Method] The field experiment were conducted to study effects of topping time and remained leaf numbers on agronomic characters, economic characters, chemical component, appearance quality and sensory quality evaluation of flue-cured tobacco K326.[Result] With the increase of remained leaf numbers, the plant height and yield were increased, but the leaf area, nicotine content, total potassium were decreased significantly. The best output value, average price, proportion of superior tobacco, total sugar content, reducing sugar content were obtained when 16 leaves remained. The best yield, output value, average price, proportion of superior tobacco, ensory quality evaluation were obtained when topping at early blooming period.[Conclusion]It can be infered that topping at early blooming period with 16 leaves remained can improve the yield and quality of K326 in tobacco producing area of southern Anhui.