不同留叶数对优化烤烟等级结构的影响

通过烤烟采烤前去除部分顶叶、脚叶,对比研究其对优化烤烟等级结构的影响,结果表明:顶叶、脚叶各去除1~3片处理,烟株长势与烤后的烟叶差别不明显,易烘烤,产量也较接近,但顶叶、脚叶各去除1片比顶叶、脚叶各去除4~5片处理叶片稍薄;顶叶、脚叶各去除4~5片处理,叶片比较厚,但产量较低。顶叶、脚叶各去除4片处理,除第1烤田间成熟能够达到成熟的要求,第2烤开始,每烤推迟4~5 d才能呈现成熟的特征,烤后的烟叶有部分叶脉带青,颜色也比较暗;顶叶、脚叶各去除5片处理的烟株,无法达到成熟的要求,烤后的烟叶比较多青筋、青片现象,甚至烤黑,油分也比较少。因此,根据武平县的生态气候条件,正常栽培的烟叶留叶数应在18片左右为宜。

Effects of the Different Number of Remaining Leaves on Hierarchical Organization of the Flue-cured Tobacco

Through removing part of the parietal lobe,feet leaves before baking of flue-cured tobacco,the influence of the Hierarchical Organization of the Flue-cured Tobacco were comparative studied.The results showed that the treatment of each parietal lobe and feet leaves removing 1~3 pieces were easy to baking.Appearance of tobacco and flue-cured tobacco leaves had no difference and the output were closed to each other.But the treatment of each parietal lobe and feet leaves removing 1 piece were thiner than the treatment of each parietal lobe and feet leaves removing 4~5 pieces.The treatment of each parietal lobe and feet leaves removing 4~5 pieces had thick leaves and the yield were lower.The treatment of each parietal lobe and feet leaves removing 4 pieces were reached to mature at the first flue-cured.From the second flue-cured each flue-cured were delayed 4 ~ 5 d to mature and the part vein of tobacco after flue-cured were green and the colour were dark.The treatment of each parietal lobe and feet leaves removing 5 pieces can not reached to mature and the tobacco after flue-cured had many blue veins and green phenomenon even to black.and the oil content were lesser.Therefore,according to WuPing county ecoclimate condition of Wuping county,nunber of aremaining leaves of normal cultivation of tobacco should be at about 18 pieces.