古树在漫长岁月的生长发育周期中,经常遭受自然灾害的侵袭与人为因素召致的各种损害,致使树木生长衰弱,甚至死亡。其中包括大量的、经常性的昆虫危害所造成的古树名木衰老和死亡。因此预防与防治病虫的危害,保护树木的正常生长,是树木 Old trees in the long years of growth and development cycle, are often affected by the invasion of natural disasters and human factors caused a variety of damage, resulting in weak growth of trees, or even death. These include the aging and death of old and famous trees caused by a large number of recurrent insects. Therefore, the prevention and control of pests and diseases hazards, to protect the normal growth of trees, trees