果树新农药品种介绍（接上期５９页）９．灭幼脲其它各称：灭幼脲三号、苏脲一号。是一种新型高效低毒杀虫剂。为苯甲酰脲类杀虫剂，通过抑制昆虫体内几丁质的形成，导致昆虫不能正常蜕皮而死亡。主要表现为胃毒作用，有一定触杀作用。对鳞翅目幼虫具有极好的杀虫活性，对... Introduction of New Pesticide Varieties in Fruit Trees (Continued from page 59) 9. All the other ingredients of diflubenzuron: diflubenzuron number three and sulphuron number one. Is a new type of high efficiency and low toxicity insecticide. For the benzoylurea insecticide, by inhibiting the formation of chitin in insects, resulting in insects can not die and die. Mainly manifested as stomach poisoning, there is a certain role in contact. Lepidoptera larvae have excellent insecticidal activity, ...