植物体干重90％以上是光合同化物的积累,亦为作物产量的基础。而烟叶是进行光合作用的主要器官,又是制烟的原料,它关系到烟草工业生产的产量与质量。但有关烟叶的光合生理生化过程研究较少,笔者对烟叶光合速率作了比较研究,现报告如下。 More than 90% of plant dry weight is the accumulation of photosynthetic compounds, but also the basis of crop yield. The tobacco is the main organ for photosynthesis, but also the raw material for making tobacco, which is related to the production and quality of the tobacco industry. However, photosynthetic physiological and biochemical processes on tobacco leaves less research, the author made a comparative study of photosynthetic rate of tobacco, are as follows.