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[目的]拓展创制除草剂单嘧磺酯的使用方法。[方法]开展一系列复配试验。重点研究了25%单嘧·2甲4氯钠盐水剂对冬小麦田杂草的田间药效。[结果]在冬小麦田返青期施用225~562.5 g a.i./hm2剂量的25%单嘧·2甲4氯钠盐水剂,能有效防除播娘蒿、麦瓶草和荠菜等麦田主要杂草,施药后45 d对杂草株防效在90%以上,鲜质量防效达95%以上。[结论]25%单嘧·2甲4氯钠盐水剂除草效果明显,推荐剂量下对冬小麦安全。
[Objective] The research aimed to develop the method of using the herbicide monosulfuron ester. [Methods] To carry out a series of compound tests. Focused on the field efficacy of 25% monosulfuron-2-methyl-4-chloro-sodium salt on weeds in winter wheat field. [Result] Applying 25% monosulfuron-methyl-2-chloro-4-chloropropanal at 225-562.5 g ai / hm2 in turning-green stage of winter wheat field could effectively control the main weeds such as Artemisia annua L., After 45 d, the weed control effect was over 90%, and the fresh-quality control effect reached over 95%. [Conclusion] The herbicidal effect of 25% monosulfuron-2-methyl-4-chloro-sodium salt was obvious and the winter wheat was safe under the recommended dosage.