报道了除草剂唑禾草灵 (骠马 )及其代谢产物残留的检测方法 ,以及在小麦和麦田土壤中的降解规律。在小麦苗期、分蘖末期施药后 ,骠马在麦苗和土壤中降解较快 ,半衰期 (T1/2 ) 1.5d左右 ,但代谢物的降解却比母体化合物缓慢 ,麦苗上的T1/2 为 3d左右 ,土壤中为 3～ 5d。无论是在小麦苗期或分蘖末期施药 ,收获时 ,骠马及代谢物在麦粒中的残留量均≤ 0 .0 1mg/kg。 This paper reports the detection methods of herbicide fenoxaprop and its metabolites, and their degradation in wheat and wheat fields. In the wheat seedling and the late tillering stage, S. miltiorrhiza degrade faster and have a half-life (T1 / 2) of 1.5d in wheat germ and soil, but the degradation of metabolites is slower than that of the parent compound. T1 / 2 on wheat seedling is 3d or so, the soil is 3 ~ 5d. Whether applied at the seedling or tillering stages of wheat, the residual amount of germafish and metabolites in grains at harvest was ≤0.01 mg / kg.