5%嘧啶肟草醚乳油及与10%氰氟草酯乳油混用对旱直播稻田杂草的防除效果

Use of Pyribenzoxim and Cyhalofop-butyl in Mixture for Weed Control in Direct Dry-Sown Paddy Field

5%嘧啶肟草醚乳油37.5、75 g a.i./hm2对稗属杂草、鳢肠、异型莎草及鸭跖草、丁香蓼、田菁等阔叶杂草的株防效均在80%以上,鲜重防效均在90%以上。5%嘧啶肟草醚乳油37.5 g a.i./hm2与10%氰氟草酯乳油112.5 g a.i./hm2混用可扩大杀草谱,提高对千金子的防效。

Pyribenzoxim （5% EC） applied at 37.5 and 75 g a. i./hm2 effectively controlled Echinochloa spp. ,Eclipta prostrate L. , Cyperus dfformis L. and other broadleaf weeds including Commlina communis L. , Ludwigia prostrate Roxb. ,andSesbania cannabina （Retz.） Pens. above 80%. Efficacy based on plant fresh weight was above 90% for all species. The mixture of pyribenzoxim at 37.5 g a. i./hm2 plus cyhalofop butyl （ 10% EC） at 112.5g a. i./hm2 improved the control level and increased the efficacy against Leptochloa chinensis （ L. ） Nees.