[目的]为明确39%辛酰溴苯腈·烟嘧磺隆·莠去津油悬浮剂对玉米田杂草的防除效果及对玉米发育的影响和安全性。[方法]采用茎叶喷雾,定期调查的方法进行田间药效试验。[结果]39%辛酰溴苯腈·烟嘧磺隆·莠去津油悬浮剂的推荐用量为526.5~585 g a.i./hm2,药后35 d对杂草的总体防效可达到99.46%。[结论]39%辛酰溴苯腈·烟嘧磺隆·莠去津油悬浮剂能够有效防除玉米田杂草,并对玉米有较好的安全性。 [Objective] The research aimed to clarify the control effect and safety of 39% octaclor / nicosulfuron / atrazine on corn weeds. [Method] The field efficacy test was carried out by using stem-leaf spray and regular investigation. [Result] The recommended dosage of 39% octaclor / nicosulfuron / atrazine suspension was 526.5-585 g a.i./hm2, and the overall control effect on weeds was 99.46% after 35 d. [Conclusion] The 39% octaclor / nicosulfuron / atrazine suspension could effectively control weeds in corn field and had good safety to corn.