桃树叶片的角质蒸腾实验

The cuficle transpiration of a peach blade

折枝处理降低了叶片下表皮蒸腾速率，提高了上表皮角质蒸腾占叶总蒸腾的比值，使角质蒸腾的上下振幅增大。２ ｍ 高度叶片低于１ ｍ 高度叶片的上表皮角质蒸腾。位于黑纸套内及阴处的叶片上表皮角质蒸腾占叶总蒸腾的比值均增大，而全日上表皮角质蒸腾的振幅却减少。

The disposat of breaking off a branch reduas He lower epidermis transpiration rate of a blade and raises upper epidermis cuticle transpiration which has the totle transpiration specific of a blade.So it makes the amplitude of cuticle transpiration increase,An upper epidermis cuticle transpiration of a blade about a meters is below a blade about I meter.The upper epidermis cuticle transpiration of the blade which lies in the black paper cover or a dark covner has the totle transpiration specific of the blade.also it becomes to increase.But the amplitude of upper epidermis cuticle tranepination in a day becomes to reduce.