植物蒸腾作用与光合作用的关系

Relation between the Transpiration and the Photosynthesis of Plants

气孔是气体进出植物体的主要器官 ,植物进行光合作用吸收CO2 时不可避免地要散失水分 ,二者平行发生。其共同之处在于蒸腾作用与光合作用都需要太阳能作为推动力 ,而且CO2 和水蒸汽输送途径大部分相同但方向相反 ;不同之处在于太阳能的作用方式不同 ,输送途径中来自于气孔的阻力对蒸腾作用的影响大于光合作用。

The stomo is the major organ of plants which gas passes in and out.When the plants make photosynthesis,they will absorb CO 2 and at the same time the water is evaporated inevitably.The identity between the transpiration and the photosynthesis is that they all use solar energy as the driving force.What's more,the transport ways of CO 2 and steam are the same but the directions are opposite.The difference is that the mode of effect of solar energy is different.The obstruction coming from the stomo in the transport way affects transpiration and photosynthesis,but the function to the transpiration is more than to the photosynthisis.The latter provides basis for people to seek proper measure of keeping moisture.