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依据在大型人工气候室内进行的试验，分析了空气中ＣＯ＿２浓度增加对春小麦叶片气孔阻力、叶温、光合速率、蒸腾速率、生长状况和叶片水分利用效率及总蒸发蒸腾量的影响。结果表明，大气ＣＯ＿２浓度增加一倍，叶片气孔阻力在充分和中等供水条件下平均增加１２５．６７％，在干旱条件下增加４７．９３％；叶温平均增高１．１℃；光合速率增大２．５６９倍；蒸腾速率减小３９．２％；叶面积增加１７．６％；株高增加２０．８％；叶片水分利用效率平均增加３．０５７倍；总蒸发蒸腾减小１０．０４％。
The effects of CO 2 concentration in air on stomatal resistance, leaf temperature, photosynthetic rate, transpiration rate, growth status, leaf water use efficiency and total evapotranspiration of spring wheat were analyzed based on the experiments carried out in a large artificial climate chamber. The results showed that the atmospheric CO 2 concentration doubled, leaf stomatal resistance increased by 125.67% on average and 47.93% under drought condition, leaf temperature increased by 1.1 ℃ and photosynthetic rate increased 2.569 times; the transpiration rate decreased by 39.2%; the leaf area increased by 17.6%; the plant height increased by 20.8%; the leaf water use efficiency increased by 3.057 times on average; the total evapotranspiration decreased by 10.04% .