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1概述磺酰脲类除草剂是由美国杜邦公司于20世纪70年代研究成功并于80年代开发出来的高效、广谱、低毒、高选择性除草剂,其问世标志着除草剂进入了超高效时代。磺酰脲类除草剂的超高活性、低剂量、低毒性、高选择性和对环境友好性使其被公认为高效和环保型的农药。四唑嘧磺隆(图1)等磺酰脲类除草剂的除草机理是:通过杂草根、叶的吸收,在植物体内传导,抑制植物的乙酰乳酸合成酶(ALS)/乙酸羟酸合成酶,阻止支链氨基酸、亮氨酸、异亮氨酸的生物合成,最终
1 Overview Sulfonylurea herbicide is a highly efficient, broad-spectrum, low-toxic and highly selective herbicide developed by DuPont in the 1970s and developed in the 1980s. The advent of this herbicide indicates that the herbicide has entered the ultra-high Efficient era. The high activity, low dose, low toxicity, high selectivity and environmental friendliness of sulfonylurea herbicides make them recognized as highly efficient and environmentally friendly pesticides. The herbicidal mechanism of sulfonylurea herbicides, such as tetrazamethopron (Figure 1), is: through the absorption of weed roots and leaves, it conducts in plants and inhibits the synthesis of plant acetolactate synthase (ALS) / acetic acid hydroxyacid Enzymes prevent the biosynthesis of branched chain amino acids, leucine, and isoleucine, and ultimately