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树皮直接与外界环境接触,可以抵御不良环境条件的侵害,保证体内生理作用的正常进行。在盛夏的七月,用带状环剥可以看到营养物质顺筛管下行受阻后的上部加长生长,在两昼夜的时间内,金帅(Golden)苹果可以增长1.2公分,黄奎(Yellow Transparent)苹果可以增长1.3公分。另外,把枝条插入曙红溶液中,就会看到曙红沿导管迅速上升,一小时内金帅苹果可升高78公分,黄奎苹果竟达110公分,可见,生理作用何等强烈!因此,树皮受到病、虫、兽、寒、机械等的伤害后,轻则影响树体健康,重则造成死亡。
Bark direct contact with the external environment, can withstand the adverse environmental conditions infringement, to ensure the normal physiological function in vivo. In midsummer, ribbon girdling shows the upper vegetative growth along the blocked downstream of the screen. In two days and nights, Golden apple can grow by 1.2 cm. Huang Transparent Apple can grow by 1.3 cm. In addition, the branches inserted into the eosin solution, you will see the eosin rapid rise along the catheter, one hour Jinshuai apple can be increased 78 cm, Huang Kui Apple as much as 110 cm, we can see that the physiological role of so intense! Therefore, Bark by disease, insects, beasts, cold, machinery and other injuries, ranging from affecting the health of trees, causing deaths.