Flucarbazone sodium is a sulfonylurea herbicide, a patented herbicide produced by Alista Biochemicals North America Co., Ltd., and its trade name is also called "Biaohu". Its active ingredients can be absorbed by the roots, stems and leaves of weeds, and exert herbicidal activity by inhibiting the activity of acetolactate synthase in weeds and destroying the normal physiological and biochemical metabolism of weeds.