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在果园里,我们经常可以看到这样一种现象,即由于自然界长期存在着自然防治的结果,使一些植食性虫类的为害程度始终停留在一定水平下。在自然条件下这种昆虫区系的相对平衡、相对稳定的状态,有利于果园的植物防护,可在防治病虫害中注意加以利用维护。为了更好地贯彻“预防为主,综合防治”的植保方针,近几年来我们在了解本站果树病虫害的种类、危害程度的同时,又着手调查果树害虫的天敌资源,发现了大量有益昆虫和螨类。这些虫类静悄悄地控制着害虫的繁殖数量,对某些虫害的防治起着巨大作用,是植保中一支不可忽视的天然力量。
In the orchards, we often can see the phenomenon that due to the long-standing natural prevention and control in nature, the degree of damage caused by some herbivorous insects remains at a certain level. Under natural conditions, the relatively balanced and relatively stable state of the insect fauna is conducive to plant protection in orchards, and can be used in the prevention and control of pests and diseases. In order to better implement the principle of “prevention first, comprehensive prevention and cure”, we have started to investigate the natural enemy resources of fruit pests and found a large number of beneficial insects in the past few years in order to understand the species and harm degree of fruit pests and diseases in our site. Mites. These insects quietly control the number of pests breeding, prevention and treatment of certain pests play a huge role in plant protection is a natural force can not be ignored.