【摘要】 本试验通过对烤烟大田生育期、农艺性状、经济性状及内在化学成分等的观察分析,研究了不同打顶方式对上部叶质量的影响.结果表明:各处理大田生长期基本一致,内在化学成分均较为接近,烟碱含量均偏高.一次打顶留叶不烘烤,烤烟倒1、2叶的长宽均最小,叶面积均最小,亩产量、均价、亩产值较高;二次打顶,烟叶的单叶质量、亩产量、均价、亩产值、上等烟比例及中上等烟比例均最大;常规打顶,各指标处在落后水平.因此,初步得出二次打顶有利于提高浦城烟区上部叶烟叶质量的效果.更多还原

【Abstract】 This paper aims to study the impact of different topping methods on the quality of upper tobacco leaves. This experiment through the observation and analysis of growing period, agronomic traits, economic traits and intrinsic chemical composition, the results showed that: the growth stages of all treatments were basically the same, the internalized chemical were relatively close and the nicotine content were higher. The single topping without leaves were not baked methods showed that the length and width of the reciprocal 1 and 2 leaves were the smallest, but the yield, average price and value of output were higher, the two times topping methods showed that the single leaf weight, the yield, average price, value of output and top class tobacco were highest, the CK methods showed that all indicators were in the backward level. Therefore, it is concluded that the two times topping methods is propitious to improve the quality of the upper tobacco leaves.更多还原