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自然界忽有一百万种昆虫,其中有三千种是害虫。虫害是农业生产的大敌。据统计,世界每年因虫害造成作物的损失约达七百五十亿美元。传统使用的农药防治害虫方法的缺点是:农药会造成公害,破坏地力,且不断使用会使害虫具有抗药性而失效,而且费用高昂。因此目前已出现利用射线致使雄虫不育的辐射遗传防治等有效方法。国外已小规模开展使用激光防治害虫的研究。如一九六五年,加拿大就开始研究用激光控制病虫害,已证实
There are one million kinds of insects in nature, of which three thousand are pests. Pest is the enemy of agricultural production. According to statistics, the annual loss of crops caused by pests in the world amounts to about 75 billion U.S. dollars. The disadvantages of the traditionally used pest control methods are that pesticides can cause pollution and destroy soil fertility, and that the constant use of pesticides can render the pests ineffective and costly. Therefore, there have been some effective methods such as the genetic control of radiation caused by male sterility with radiation. Foreign small-scale use of laser prevention and control of pests. In 1965, Canada started to study the use of laser to control pests and diseases, which has been confirmed