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啶嘧磺隆是内吸性传导型除草剂,能迅速被杂草的茎叶和根系吸收,随后在植物体内传导至整株杂草,通过抑制植物体内乙酰乳酸合成酶(ALS)的活性,进而抑制杂草体内的支链氨基酸的合成,阻碍蛋白质的合成和其它代谢过程,造成杂草死亡。杂草接触药剂后4～7d出现失绿、黄化等症状,然后枯死,部分杂草在施药后20～40d后彻底死亡。
Flavosulfuron is a systemic herbicide that is quickly absorbed by stems, leaves and roots of weeds and is subsequently transmitted to the whole weed in plants by inhibiting the activity of acetolactate synthase (ALS) in plants, Which in turn inhibits the synthesis of branched-chain amino acids in weeds, hinder protein synthesis and other metabolic processes, resulting in the death of weeds. After weed exposure to drugs 4 to 7d appear chlorosis, yellowing and other symptoms, and then dead, some of the weeds in the application after 20 to 40 days after the thorough death.