白肋烟打顶技术探讨

通过对白肋烟的烟叶经济性状、烟株株型、烟叶成熟度及烟叶化学成分的比较分析认为，开花始期打顶的烟株，上下部叶片长势成熟均匀，烟叶成熟适宜，内在化学成分协调，因此，开花始期是最适宜的打顶期；留叶２０片左右烟叶化学成分协调，产量、产值高，是适宜的留叶数；打顶位置以倒数第４片叶和第５片叶之间为宜，留叶部位以此下数至适宜留叶数．

Study on Tip Pruning Technique of Burley Tobacco

Through analysis of economic characterplant typesgrade of maturity and chemical composition of plant, the result showed, the plants of top and bottom were even maturity. The maturity of place was suitable, chemical composition was coordinate, which pruned at early blooming,so early blooming was the available period of tip pruning; Reserving 20 plants was suitable, because chemical composition was coordinate,yield and output value was high at that time; The place of tip pruning was in the middle of the fourth and the fifth plant from the bottom, the reserving position was counting from tip pruning place to the numbers of reserving.