A composition comprising a synergistic herbicidally effective amount of propanil and cyhalofop in a weight ratio of about 1:0.1-0.3, preferably 1:0.2. The composition is particularly useful for protecting rice crops against undesired weeds.本發明涉及一種包含協同的除草有效量的除草靈(propanil)和賽伏草(cyhalofop)的除草組合物,其重量比大約為1:0.1~0.3。該組合物尤其適用於保護水稻及防除所不欲之雜草。