Synthetic pyrethroid insecticides is the third largest class of insecticides.The residue of this kind of insecticides has become one of the most dominant insecticide residues in farm produce.

• 摘要拟除虫菊酯类农药是杀虫剂中的第三大类，这类农药残留己成为目前农产品中的主要农药残留类型之一。