研究表明种衣剂处理对油菜植株高度的影响集中表现在播种后１５～３５、５０～７０天两个增长高峰期；对茎粗、叶面积的影响以播种后３０～７０天增长尤为明显。对油菜蚜虫的控制效应表现在种群死亡率增大、若虫期发育历期加大，成虫寿命、产仔率明显降低。采用种衣剂和４０％甲基异柳磷混合处理，可有效地控制苗期蚜虫的危害，在花期配合喷施４０％甲基异柳磷，其保产效果可高达１９．７４％。 The results showed that the effect of seed coating treatment on the height of rapeseed mainly concentrated in two growth stages from 15 to 35 days after sowing and from 50 to 70 days after sowing. The effect on stem diameter and leaf area increased especially from 30 to 70 days after sowing. The control effect on aphids in rape showed that the population mortality increased, nymph period increased, life span of adult and litter size decreased significantly. The mixture of seed dressing and 40% methyl isofenphos can effectively control the damage of aphids at the seedling stage. When 40% methyl isofenphyl was sprayed at the flowering stage, the yield protection effect could reach as high as 19.74%.