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烟叶根据着生位置分为上部叶,中部叶和下部叶三种,在种植过程中因为生理生化原因上部叶所含烟碱过高,在卷烟制造中使用性不高,对于卷烟上水平不利,所以通过育种、种植、烘烤等方法提高上部叶的可用性,使其生长发育、生理生化指标等趋于平衡,使上部叶成为真正的优质烟叶,为制造精品高档优质卷烟提供优质的原材料,为此研究烤烟上部叶的可用性具有重要意义。
According to the position of the tobacco leaves are divided into upper leaves, the middle leaves and the lower leaves of three kinds, in the cultivation process because of the physiological and biochemical causes of the upper leaves contain nicotine is too high in the manufacture of cigarettes is not high, the level of negative for cigarettes, So by raising, planting, baking and other methods to improve the availability of the upper leaves, so that its growth and development, physiological and biochemical indicators tend to balance the upper leaves become the real high-quality tobacco, for the manufacture of high-quality fine quality cigarettes to provide high-quality raw materials for the This study of the availability of the upper leaves of flue-cured tobacco is of great significance.