木质部内负压传递方式的研究

Research on Negative Pressure Transfer Mode in Xylem

利用杨树、法桐1年生枝条作试验材料,通过施加不同的负压进行传递实验,结果证明木质部内的负压是靠压力平衡方式传递的。水分的移动方式是从上到下分段依次进行的,负压的大小与移动速度呈显著的正相关关系。

By carrying on transmission experiments with different negative pressures on annual branches of poplar and plane tree, the paper turns out that negative pressure in the xylem is achieved by pressure balance and watermoves orderly from top to bottom section by section. There is a significant positive correlation relationship between size of the negative pressure and- move speed