The invention belongs to the technical field of pesticides and discloses a
wettable powder containing penoxsulam, mefenacet and pyrazosulfuron-ethyl. The
wettable powder is prepared with the penoxsulam, the mefenacet and the pyrazosulfuron-ethyl as main
active components according to the
mass ratio of 0.1-40:0.1-80:0.1-60. The total
mass percentage content of the penoxsulam, the mefenacet and the pyrazosulfuron-ethyl in the
wettable powder is 1-80%. The aqueous agent also includes 1-20% of a dispersing agent, 1-10% of a
wetting agent and the balanced being
filling materials. The invention also discloses an application of the wettable
powder in prevention and removal of weeds in paddy fields. By means of combination of the herbicides, the wettable
powder is enlarged in weeding spectrum and is improved in weeding effects, has an outstanding preventing and treating effects on gramineous weeds,
cyperaceae weeds and broadleaved weeds, is quick in effects, is long in lasting period, can
delay drug resistance, is completely in weeding, is low in residue, is low in
toxicity and is safe and environmental-protective.