不同时间处理上部不适用烟叶对烤烟产质量的影响

Effects of Removing Disused Field Tobacco Leaves in Different Time on the Yield and Quality of Flue-cured Tobacco Leaf

为了处理不适用烟叶,提高烤烟质量,以云烟87为试验材料,通过2年的田间试验研究了不同时间处理上部不适用烟叶对烤烟生长、产质量和品质的影响。结果表明,与正常留叶(16~18片叶)(对照)相比,打顶后进行不适用烟叶处理不利于上部烟叶的伸展,但对下部烟叶和中部烟叶的影响较小。打顶后进行不适用烟叶处理,烟叶产量比正常留叶降低了6.14%~13.17%,但是增加了上中等烟叶比例。打顶后30 d进行上部不适用烟叶处理的产值最高,2年的产值分别较正常留叶增加了11.40%和4.24%。综合看来,在当地生产条件下,打顶后30 d进行上部不适用烟叶处理能够获得较好的产质量和化学品质。

In order to deal with disused field tobacco leaves, and improve the quality of flue-cured tobacco, two years field experiment was carried out to study the effects of removing disused flue-cured tobacco （Yunyan 87） leaves in different time on the yield and quality of flue-cured tobacco. The results showed that, compared with the contrast, the treatment removing disused tobacco leaves after topping was bad for the expanding of upside leaves, and had no effects on middle and bottom leaves. The tobacco leaves yield of treatment removing disused tobacco leaves after topping decreased by 6.14% to 13.17%comparing with the contrast, but the ratio of superior and middling tobacco leaf increased. The highest yield and quality was obtained by removing disused tobacco leaves 30 days after topping, the tobacco leaves economic characteristics of treatment removing disused tobacco leaves increased by 11.40% and 4.24% in two years respectively. On the whole, the better eco-nomic characteristics and chemical quality can be obtained by removing disused tobacco leaves 30 days after topping in lo-cal production condition.