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研究了不同光强对烤烟气孔导度（Ｇｓ）、光合速率（Ｐｎ）、胞间 ＣＯ２浓度（Ｃｉ）及叶片蒸腾速率（Ｔｒ）的影响。结果表明：随着光合有效辐射的提高，烤烟气孔导度、净光合速率和蒸腾速率均增加，而胞间ＣＯ２浓度则下降，品种间变化趋势相似。
The effects of light intensities on stomatal conductance (Gs), photosynthetic rate (Pn), intercellular CO2 concentration (Ci) and leaf transpiration rate (Tr) of flue-cured tobacco were studied. The results showed that the stomatal conductance, net photosynthetic rate and transpiration rate of flue-cured tobacco increased with the increase of photosynthetically active radiation while the intercellular CO2 concentration decreased while the trend of variation among varieties was similar.