害虫是农业生产的大敌。人们为了治虫,相继采用了捕打、药剂、生物等治虫方法。近年来,国内外又提出了“以肥治虫”的新方法。这种方法在治虫的同时,又为作物补充了营养,而且还不伤天敌,真是一举三得。人们发现,棉铃虫喜欢在嫩绿的棉叶上产卵,这是由于棉花嫩芽的腺毛分泌的草酸有引诱棉铃虫 Pests are the enemy of agricultural production. People in order to pest control, have used the catch, medicine, biology and other pest control methods. In recent years, at home and abroad has proposed a new method of “fertilizer to worm”. This method of pest control at the same time, but also for the crop to add nutrition, but also not hurt natural enemies, really serve three purposes. It was found that the cotton bollworms like to spawn on the verdant cotton leaves, which is due to the oxalic acid secretion by the glandular hairs of the cotton buds.