Thickening composition for glufosinate-ammonium and flumioxazin as well as preparation and application of thickening composition

The invention provides a thickening composition for glufosinate-ammonium and flumioxazin as well as preparation and application of the thickening composition, and relates to the field of pesticide chemistry. The thickening composition is prepared from the following components in percentage by mass: 0.5 to 5 percent of pentasodium amino trimethylene phosphonate, 18 to 50 percent of a surfactant, 1 to 10 percent of 1-vinyl-2-pyrrolidone and water; the surfactant comprises a surfactant A and a surfactant B, the mass percentage content of the surfactant A is 6%-40%, and the mass percentage content of the surfactant B is 1%-30%. According to the thickening composition, the viscosity of the microemulsion with the effective components of glufosinate-ammonium and flumioxazin can be remarkably increased, the viscosity is increased by at least 65 cps, the adhesion of liquid medicine to target leaf surfaces is remarkably improved, and the use amount of glufosinate-ammonium and flumioxazin is remarkably reduced. 本发明提供一种用