However , the effects on nicotine production caused by leaf wounding were smaller than that caused by removing the shoot apex 但叶面损伤对烟株体内烟碱合成的影响小于打顶处理。
Removal of the shoot apex and leaf wounding did not show any influences on nitrogen uptake by plant , but increased nicotine production per unit nitrogen 切除顶芽和叶面损伤对烟株体内的氮浓度及吸氮量均无显著影响,但显著提高了烟株体内单位氮素产生烟碱的能力。
Leaf wounding also increased nicotine concentration in tobacco leaves , and the increment caused by wounding twice was more than that caused by once 叶片损伤也能增加体内的烟碱浓度,且损伤二次比损伤一次的效果更为明显,说明叶面损伤对烟株体内烟碱合成的影响具有累积效应。