人们早就知道,当负压存在时,植物木质细胞的水中就会形成气栓塞。这种被称为“空穴化”的现象是由于从含气处通过多微孔进入的气核所产生。水压和凝结等特殊的生物物理条件会使空穴增强并导致木质纤维丧失功能。多年来,由于缺乏可靠的无损监测设备,使得上述现象被忽视。只是最近才观察到气泡扩张产生的细胞壁弛豫现象会引起可闻声和超声的声发射。因此而产生并发展了监测任何生物物理条件下空穴化的技术。本文论述了已得到的空穴化与水压之间关系 It has long been known that when negative pressure is present, air embolism can form in the water of plant lignocytes. This phenomenon known as “cavitation” is due to gas nuclei that enter through the micropores from the gas-bearing point. Special biophysical conditions, such as water pressure and condensation, enhance cavitation and result in loss of function of lignocellulosic fibers. Over the years, the above phenomenon has been overlooked due to the lack of reliable non-destructive monitoring equipment. It has only recently been observed that cell wall relaxation due to bubble expansion causes audible sound and ultrasonic acoustic emission. As a result, techniques for monitoring cavitation at any biophysical condition have been developed and developed. This article discusses the relationship between cavitation and water pressure that has been obtained