敌草快在玉米保护性耕作播后苗前封闭处理的安全性及除草效果

Safety and Weeding Effect of Diquat as Pre-seedling Soil Treatment Herbicide in Maize Conservation Tillage

通过田间试验明确敌草快在玉米保护性耕作播后苗前封闭处理的安全性及除草效果。在2年田间小区试验和大区验证试验中采用触杀灭生性除草剂38%2甲敌草快水剂与常规土壤封闭除草剂76%乙莠滴辛酯悬乳剂田间桶混喷雾施药处理,结果表明:38%2甲敌草快水剂150~200 ml/667m^(2)桶混76%乙莠滴辛酯悬乳剂200 ml/667m^(2)在玉米保护性耕作播后苗前封闭处理,对玉米出苗及幼苗生长安全,对早生杂草具有理想的防除效果;对田间杂草的防效均可达到88%以上。灭生性除草剂敌草快与常规土壤封闭除草剂乙莠滴辛酯田间桶混喷雾封闭处理可作为玉米保护性耕作播后苗前杂草封闭防除配套技术应用。

The field experiments were conducted to determine the safety and weeding effect of Diquat before and after sowing in maize conservation tillage.In two years of field plot trials and regional validation trials,38%2 methimax fast water herbicide and 76%ethamet octyl ester emulsion,a conventional soil blocking herbicide,were applied in a field barrel mixed spray.The results showed that 38%2 methimax fast water herbicide 150~200 ml/667m^(2)2 barrels mixed 76%ethamet octyl ester emulsion 200 ml/667m^(2)2 barrels were closed before the seedling after the sowing of maize conservation tillage,which was safe for the emergence and growth of maize seedlings,It has ideal control effect on early growing weeds;The control effect on weeds in the field can reach more than 88%.The field barrel mixed spray sealing treatment of killing herbicide Diquat and conventional soil sealing herbicide Ethatractyl can be used as a matching technology for pre seedling weed sealing and control after sowing in maize conservation tillage.