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种类繁多的昆虫,可以分为益虫和害虫。而划分益虫和害虫的标准,主要是看它对农林生产和人们生活有利还是有害。害虫在昆虫中是占大多数的,它是人类的敌人,我们应积极釆取防治对策。益虫是人类的朋友,应加以保护利用。我国自古以来,对昆虫资源的利用,就受到重视。五棓子早在2000年前,山海经本草拾遗就有记载;白腊虫在720多年以前,我国
A wide variety of insects, can be divided into beneficial insects and pests. The criteria for dividing beneficial insects and pests mainly depend on whether it is beneficial or harmful to the production and livelihood of people in agriculture and forestry. Pests are the majority of insects, it is the enemy of mankind, and we should take precautionary measures. Beneficial insects are human friends and should be protected and utilized. Since ancient times, the utilization of insect resources in our country has drawn great attention. Five raccoon as early as 2000 years ago, Shanhai picked up by the Materia Medica has been recorded; white waxy 720 years ago, my country