二氯喹啉酸是防除水稻田稗草的特效选择性除草剂,属于激素类抑制剂,主要是通过抑制稗草的生长点,使其心叶不能抽出从而达到防除稗草的目的。二氯喹啉酸能被萌发的种子、根、茎及叶部迅速吸收,并迅速向茎和顶端传导,使稗草中毒死亡。二氯喹啉酸对稗草活性高,药效反应迅速,施药后1-2天稗草 Quinclorac, a selective and selective herbicide against barnyardgrass in paddy field, belongs to the class of hormonal inhibitors and can be used to control barnyard grass by inhibiting the growth of barnyardgrass and preventing its heart from being extracted. Quinclorac can germinate seeds, roots, stems and leaves rapidly absorbed, and quickly to the stem and tip conduction, so that the death of barnyardgrass poisoning. Quinclorac is highly active against barnyardgrass and has rapid response to the effect of barnyard grass after 1-2 days of application