咪唑啉酮类除草剂是美国氰胺公司于80年代初开发的一类高活性广谱除草剂,可防除一年生与多年生禾本科及阔叶杂草。这类除草剂具有新型的化学结构,高效低毒,用量低,改进了环境安全性,并具有新的作用方式,它们是通过抑制乙酰羧酸合成酶的活性,阻止缬氨酸、亮氨酸与异亮氨酸的生物合成,导致植物生长停止而死亡的。在美国,这类除草剂可与磺酰脲类除草剂媲美。如Scepter,上市仅几年,便已成为美国1987年用量最多的除草剂品种之一。迄今为止,业已开发投放市场的咪唑啉酮类除草剂还有Arsenal、Assert及Purs- Imidazolinone herbicides are a class of highly active broad-spectrum herbicides developed by the American Cyanamid Company in the early 1980s to control annual and perennial grass and broadleaf weeds. These herbicides have a new chemical structure, high efficiency and low toxicity, low dosage, improved environmental safety and new ways of action. They inhibit the activity of acetyl-carboxylic acid synthase and prevent valine, leucine With isoleucine biosynthesis, leading to plant death and death. In the United States, these herbicides are comparable to sulfonylurea herbicides. Such as Scepter, listed only a few years, it has become the most used herbicide varieties in the United States in 1987. To date, imidazolinone herbicides, which have been marketed, include Arsenal, Assert and Purs-