灭幼脲和除虫脲都是昆虫生长调节剂,具有药效好,无残留,持效期长,对人畜鸟鱼和蜜蜂等无毒害,不利产生抗药性,不污染环境,与多种农药混用不易发生化学反应,因而广泛应用于农林果菜和蔬菜作物上。灭幼脲和除虫脲都是一种昆虫表皮几丁质形成的抑制剂,1972年首先由荷兰科学家研制成功苯甲酰基脲类化合物灭幼脲(氟脲杀),我国称为灭幼脲1号。这类化合物对昆虫幼虫产生致毒作用,是在蜕皮时作用特别剧烈,受药害虫幼虫不能形成新的内 Both diflubenzuron and diflubenzuron are insects growth regulators, with good efficacy, no residue, long duration, non-toxic to human, bird fish and bees, adverse drug resistance, does not pollute the environment, and a variety of pesticides Mixture is not prone to chemical reaction, which is widely used in agricultural and forestry fruits and vegetables and crops. Both diflubenzuron and diflubenzuron are inhibitors of chitin formation in the insect epidermis. In 1972, benzoyl urea compounds (UFU) were successfully developed by Dutch scientists. In our country, number 1. Such compounds on insect larvae produce toxic effects, especially when the role of molting, drug pests can not form a new internal larvae