This study aimed to investigate the control effect of different concentrations of 80% nicosulfuron·atrazine water-dispersible granules on weeds in spring maize field. [Method] Maize field was sprayed with 300, 375, 450, 750 g/hm2 80% nicosulfuron·atrazine water-dispersible granules respectively, with 40 g/L nico-sulfuron suspending concentrate and 38% atrazine suspending concentrate as con-trol agents. Artificial weeding and control (CK) plots were set. [Result] Fresh weight control efficiency of 375-750 g/hm2 80% nicosulfuron ·atrazine water-dispersible granules was significantly higher than that of 40 g/L nicosulfuron suspending con-centrate and 38% atrazine suspending concentrate; no obvious phytotoxicity symp-toms were observed after application of 300-450 g/hm2 80% nicosulfuron·atrazine water-dispersible granules; 750 g/hm2 80% nicosulfuron·atrazine water-dispersible granules posed certain impact on the growth of maize seedlings. Compared with control plots, various doses of 80% nicosulfuron·atrazine water-dispersible granules signifi-cantly improved the yield of maize. [Conclusion] ln the present study, 375-450 g/hm2 80% nicosulfuron·atrazine water-dispersible granules exhibited high control effect on weeds in maize field and were safe for the growth of maize seedlings.
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机译：本研究旨在探讨不同浓度的80％烟嘧磺隆·at去津水分散性颗粒剂对春玉米田杂草的防治效果。 ［方法］分别对玉米田分别喷洒300g，375g，450g，750g / hm2 80％烟嘧磺隆·at去津水分散颗粒，分别喷洒40g / L烟嘧磺隆悬浮剂和38％at去津悬浮剂。 。设置了人工除草和控制（CK）图。 [结果] 375-750 g / hm2 80％烟嘧磺隆·at去津水分散性颗粒的鲜重控制效率明显高于40 g / L烟嘧磺隆悬浮剂和38％r去津悬浮剂。施用300-450 g / hm2 80％烟嘧磺隆·at去津水分散性颗粒剂后未见明显的植物毒性症状。 750 g / hm2 80％烟嘧磺隆·at去津水分散性颗粒剂对玉米幼苗的生长有一定影响。与对照样区相比，不同剂量的80％烟嘧磺隆·at去津水分散性粒剂显着提高了玉米的产量。 ［结论］在本研究中，375-450 g / hm2的80％烟嘧磺隆·at去津水分散性颗粒剂对玉米田杂草具有较高的防治效果，对玉米幼苗的生长安全。
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