大麦气孔导度、蒸腾速率对光照强度的响应

摘要

光照强度是重要的环境影响因素，植物气孔导度、蒸腾速率是研究植物生理状态的重要参数。研究气孔导度、蒸腾速率与光照强度的关系，不仅反映了植物的生理状态，还可以为指导作物农业生产提供参考。本文利用指数改进模型拟合大麦气孔导度、蒸腾速率对光照强度的响应，并将计算值和观测值进行比较。结果表明，大麦气孔导度和蒸腾速率对光照强度的指数改进模型能较准确的计算出大麦不同光照强度下的气孔导度和蒸腾速率。这为指数改进模型其他植物中的应用提供了参考。%Light intensity was one of important environment factor, which affected the stomatal conductance and transpiration rate of plnat leaves. The stomatal conductance and transpiration rate were important physiology parameters of plants. We used modified exponential model to fit the stomatal conductance and transpiration rate of plant leaves, and compare the difference between predicted values and measured values. The results showed that modified exponential model could accurately fit the stomatal conductance and transpiration rate of barley. The modified exponential model can be widely used to fit the stomatal conductance and transpiration rate of other plants.