20%烟嘧磺隆可分散油悬浮剂对玉米田一年生杂草的防除效果研究

Effect of 20%Nicosulfuron OD on Annual Weeds in Corn Field

为进一步明确烟嘧磺隆可分散油悬浮剂对玉米田一年生杂草的防治效果,达到合理使用的目的,通过田间试验研究20%烟嘧磺隆可分散油悬浮剂对防除玉米田一年生杂草的效果,和在杂草防除后对杂草氮、磷、钾及水分累积的影响。结果表明,施用20%烟嘧磺隆可分散油悬浮剂防除玉米田一年生杂草效果十分显著,对防治稗草、马唐、旱莲草、马齿苋等一年生杂草均具有很好的效果,总草鲜重防效可达79.70%~93.23%。防除降低了杂草在玉米田间对水分和氮、磷、钾的消耗,在一定程度上改善了玉米田间的水肥条件。在20%烟嘧磺隆可分散油悬浮剂处理后,玉米产量达到7436.29~7791.29 kg/hm^(2),增产效果显著,相较于空白对照产量增加20.89%~26.66%。研究认为,20%烟嘧磺隆可分散油悬浮剂防控玉米田一年生杂草具有十分广阔的应用前景,推荐剂量为每公顷使用有效成分45~60 g。

To further clarify the control effect of nicosulfuron OD on annual weeds in corn field,the purpose of rational use was achieved.The effects of 20%nicosulfuron OD on the control of annual weeds in corn field and the accumulation of nitrogen,phosphorus,potassium and water in weeds were studied by field experiment.The experiment results showed that the application of 20%nicosulfuron OD had a significant effect on the control of annual weeds in corn field,and it had a good effect on the control of weeds such as Echinochloa crusgalli,Digitaria sanguinalis,Eclipta prostrata and Portulaca oleracea,and the total grass fresh weight control effect was 79.70%-93.23%.The control reduced the weeds’consumption of water,nitrogen,phosphorus and potassium in corn field,and improved the water and fertilizer condition in corn field to some extent.Meanwhile,the yield of maize reached 7436.29-7791.29 kg/hm^(2),and the yield increase was significant,20.89%-26.66%higher than that of the blank control.The results show that the 20%nicosulfuron OD has a broad application prospect in the prevention and control of annual weeds in corn field,and the recommended dose is 45-60 g(a.i)/hm^(2).