在Ontario种植的品种中,打顶高度、成熟度、叶数、节距、茎叶角度和叶片大小等各有不同。某些特性如叶位、茎叶角度和叶片大小明显影响不同品种对机采的适应性。过去对品种机采的效果尚无研究。这主要是由于使用机采的烟农人数有限。近几年,由于采用机采的烟农在增加,有必要了 Among the varieties grown in Ontario, the top height, maturity, leaf number, pitch, stem and leaf angle, and leaf size are all different. Certain characteristics such as leaf position, stem-leaf angle and leaf size significantly affect the adaptability of different varieties to the machine. In the past, there was no research on the effect of variety harvesting. This is mainly due to the limited number of tobacco farmers using machines. In recent years, it is necessary because of the increase in the number of tobacco growers using machines