采用小区试验方法进行了质量分数为15%磺草酮油悬剂防除玉米田杂草田间药效试验。结果表明:质量分数为15%磺草酮油悬剂在玉米三、四叶期施用,剂量为0 180～0 450kg hm2,稗草的平均防效为86 0%,对各种阔叶杂草总平均防效为77 4%,对杂草的鲜重平均抑制效果为78 5%,而且杀草谱广,防效持久,不影响后茬轮作。 Field trials of 15% sulcotrione oil suspension to control weeds in corn field were carried out by plot test. The results showed that when the mass fraction of sulcotrione was 15% and the application rate was 0 180 ~ 0 450 kg hm2, the average control effect of barnyard grass was 86 0% The overall average control effect was 77.4%. The average fresh weight of weeds was 78.5%. The broad-spectrum herbicidal effect was long-lasting and did not affect the crop rotation.