4％烟嘧磺隆悬浮剂不同施用量对玉米田杂草的药效药害试验

摘要

针对玉米常用的苗后除草剂4％烟嘧磺隆悬浮剂，以河北省衡水地区大田生产上常用的夏玉米品种郑单958为试材，在玉米5叶期（此时杂草基本出齐）采用不同施药量（1050、1500和1950 mL/hm2）进行喷施，分别以喷施清水和人工除草为对照，分析不同施药量对杂草防除效果以及玉米安全性和产量的影响，以确定最佳施药量。结果表明：在玉米5叶期用4％烟嘧磺隆悬浮剂进行除草，适宜用量为1500 mL/hm2，不仅对各种杂草防治效果好，而且对玉米不产生药害，玉米产量高。%Using Zhengdan 958 as the test material, different dosages (1 050, 1 500 and 1 950 mL/hm2 ) of corn postemergence herbicide 4% nicosulfuron suspending agent was sprayed in the corn 5 leaves stage by spraying water and artificial weed as controls, the effects of different dosages on weed control efficacy and safety and yield of corn were analyzed in order to determine the optimal dosage.The results showed that in the corn 5 leaves stage spraying 4% nicosulfuron suspension agent to control weeds, the suitable dosage was 1 500 mL/hm2, not only the weed control effect was better, but did not produced damage to corn, and the yield of corn was higher.