论文部分内容阅读
我们于1993年进行了乙草胺对夏玉米田杂草防除试验示范,取得了较为理想的试验效果。 1 播后芽前处理区 乙草胺每666.7m~2100g和150g,15天后对禾本科杂草的防效都达到80％以上,30天后防效达90％以上,对沙草的防效最高,基本上达到100％。而对阔叶杂草为主的其他杂草防效一般,30天后达不到59％。从杂草鲜重上看,30天防效也达到80％以上。由此得知,50％乙草胺每666.7m~2用量100g和150g,除草效果好于48％拉索666.7m~2150g。乙草胺每666.7m~275g与拉索每666.7m~2150g的除草效果相当,30天对禾本科杂
We carried out acetochlor on summer corn weed control demonstration in 1993, and achieved a more satisfactory test results. After 1 sowing pretreatment area acetochlor per 666.7m ~ 2100g and 150g, 15 days after the grass weeds control effect reached more than 80%, 30 days after the control effect of more than 90%, the highest anti-sand effect , Basically up to 100%. The weed control of broad-leaved weeds in general is less than 59% after 30 days. Weeds fresh from the point of view, 30-day control effect has reached more than 80%. It was found that 50% acetochlor per 666.7m ~ 2 dosage of 100g and 150g, weeding better than 48% cable 666.7m ~ 2150g. Acetochlor per 666.7m ~ 275g and 666.7m ~ 2150g cable weeding considerable effect, 30 days of gramineous