【摘要】 乙草胺+扑草净、乙草胺+特丁净、乙草胺+二甲戊乐灵、乙草胺+乙氧氟草醚4种除草剂混用组合对覆膜棉田杂草有良好的控制效果。结果表明:4种组合施药后20d,对禾本科杂草的防效与对阔叶杂草的防效均较高,对禾本科杂草株防效分别为92.6%、95.6%、92.0%、91.7%,对阔叶杂草的株防效分别为91.0%、93.7%、87.9%、93.5%。施药40d防效略低于20d防效,但仍然表现出较高防效,说明各组合持效期较长。更多还原

【Abstract】 It is effective in control of weed in cotton fields covered with plastic films, when acetochlor mixtures with prometryn, terbutryn, pendimethalin, and oxyfluorfen, respectively. The results showed that after the four mixtures had been applied in field after 20 d, the control effects to grassy weed were 92.6, 95.6, 92.0 and 91.7%, while those to broadleaf weed were 91.0, 93.7, 87.9 and 93.5%. Even in the 40 d investigation, the control effects were significant. It was concluded that the control effects of the four mixtures were long-lasting.更多还原