The invention provides a weeding composition containing
dithiopyr and diflufenican as well as a preparation method and application thereof, and belongs to the field of pesticides, the composition comprises
dithiopyr, diflufenican, a dispersing agent, a
wetting agent, a
thickening agent, an anti-freezing agent, a defoaming agent and water,
dithiopyr and diflufenican are effective components, and the
wetting agent is a mixture of dithiopyr and diflufenican. The range of the
mass ratio of dithiopyr to diflufenican is (1: 1)-(1: 4); the weeding composition provided by the invention is efficient, low in
toxicity and long in lasting period, is beneficial to reduced use of
paddy field herbicides, and has a relatively
good control effect on gramineae,
cyperaceae and broadleaf weeds in a direct seeding
paddy field.