The invention provides a weeding composition which comprises 2, 4 drops,
fluroxypyr-mepthyl and
aminopyralid, and the acid
equivalent weight ratio of the 2, 4 drops, the
fluroxypyr-mepthyl and the
aminopyralid is (1-50): (1-50): (1-50). The composition can be prepared into various dosage forms such as missible oil,
wettable powder,
water dispersible granules, a suspending agent, an
emulsion in water and the like. Indoor
virulence tests prove that compounding of the three components can achieve remarkable synergistic interaction. Field trials show that the ternary weeding composition has a high
control effect on broadleaf weeds in corn fields, and the risk of
aminopyralid residue can be reduced.