几种除草剂及其组合对烟田杂草的防除效果

Efficacy of Several Herbicides on Weeds in Tobacco Fields

为了筛选高效安全烟田除草剂及除草剂组合,在广东烟区开展几种除草剂及除草剂组合对烟田杂草的防除效果试验。结果表明,芽前除草剂50%仲灵·异松乳油和72%异丙甲草胺乳油对烟田杂草防除效果较好,施药后60 d对杂草鲜质量防效分别为78.42%和71.62%;芽后除草剂25%砜嘧磺隆水分散粒剂和除草剂组合5%精喹禾灵乳油+48%灭草松水剂对烟田杂草的防效较好,施药后30 d对杂草鲜质量防效分别为78.72%和92.90%。

The efficacy and selectivity of several herbicides was studied in Guangdong tobacco growing areas. The preemergence herbicide clomazone-butralin 50% EC and metolachlor 72% EC provided the best weed control in tobacco fields at 78% and 72%,respectively,based on weed fresh weigh 60 days after application. Postemergence herbicide rimsulfuron 25% WG and the mixture of quizalofop-p-ethyl 5% EC-bentazone 48% AS were also effective in tobacco fields,providing 79% and 93%,respectively,also on weed fresh weigh at 30 days after application.