不同时间打顶和去除底脚叶对烤烟产质量的影响

为田间优化烟叶结构提供理论依据,采用裂区试验设计研究不同时间打顶和去除底脚叶对烟叶产质量的影响。结果表明:1)打顶时间适当推迟,可改善外观质量,提高烟叶内在化学成分协调性,产值和产量略有降低,均价稍有提高。2)随着去除底脚叶时间推迟,顶叶成熟期推迟,叶片数极显著减少,株高、节距和最大叶宽略有增加,外观质量和内在化学成分协调性有所提高,产量极显著降低,产值显著降低,均价显著提高。以30%~50%中心花开放时打顶,当天去除4片底脚叶有利于提高烟叶的产质量。

Effects of Removing Foot Leaves and Toping in Different Periods on Yield and Quality of Flue-cured Tobacco

In order to provide theoretical basis for optimizing the structure of flue-cured tobacco,it was studied that the effects of removing foot leaves and topping on the yield and quality of flue-cured tobacco during different stages with the experiment of split plot design in the field plots.Results:1) With the delay of the topping time,the appearance quality and the coordination of the inherent chemical composition were improved,the output value and yield were decreased and the average price was increased.2) With the delay of the removing foot leaves time,the mature stage of upper leaves delayed,the number of leaves was very significantly reduced,the plant height,node distance and maximum leaf width were slightly increased,the appearance quality and the coordination of the inherent chemical composition were improved,the yield was extremely significantly reduced,the output value was significantly reduced and the average price was significantly increased.By synthesizing all kinds of factors,it worked best with the treatment of topping 30％～50％ of the central flowers and removing four foot leaves on the topping day.