论文部分内容阅读
“养困法”是一种按照自然规律,利用害虫的天敌防治害虫的生物防治方法之一。根据害虫与其天敌昆虫之间个体大小的差别,把有虫苗木剪下来,放入一定网目的纱笼内,使害虫的天敌昆虫羽化,钻出纱笼飞走,扩大再寄生;而没有被寄生的害虫羽化后,被困死在纱笼中。这种方法我们称为“养困法”,即养出天敌,困死害虫之意。
The “law of hardship” is one of the biological control methods for controlling pests by using the natural enemies of pests in accordance with the laws of nature. According to the individual size difference between pests and their natural enemy insects, the cuttings of cuttings of insects and insects are put into a certain mesh sargenet to make the natural enemies of pests emerge, and the squirrels drill out of the squirrels to expand and then parasitize; and the pests that are not parasitized Emergence, trapped dead in the sarong. This method we call “law of support”, that is, raising natural enemies, trapped in the meaning of pests.