当你到林间或田间觅览,会遇到这样一些情景:一串串松毛虫卵并未孵化出松毛虫,而是飞出一些小蜂;一条半死不活的大豆食心虫虫体上不断钻出一些“小蛆”,摇头晃脑,过一会“小蛆”又变成了似大米一样的小白茧……松毛虫的卵怎么生出小蜂、大豆食心虫体上为啥有“小蛆”又变成白茧?这些,都是寄生蜂所为,都是典型的寄生现象。寄生蜂在自然界无声无息地控制着害虫,其作用不可低估,这在害虫的生物防治中占有极其 When you visit the woods or in the fields, you will encounter scenarios where a string of pine eggs do not hatch the pine but fly some small bees; a semi-lethal worm eats insects Some “little maggots”, shaking their heads and shaking their heads, after a while “little maggots” turn into a small white cocoon like rice ... ... Dendrolimus eggs how to give birth to small bees, so why the soybean food insects “little maggots” change Into the white cocoon? These are parasitic bees, are typical of parasitic phenomena. Parasitic wasps quietly control pests in nature, its role can not be underestimated, which occupy a very great biological control of pests