飘移控制剂对草甘膦飘移及其除草效果的影响

Effect of Drift Control Adjuvants on Glyphosate Drift and Weed Control

草甘膦飘移到敏感作物大豆田,会造成对大豆的伤害和产量降低。为解决这一生产实际问题,对飘移控制剂控制草甘膦飘移及除草效果的影响进行了研究。结果表明:飘移控制剂不改变草甘膦的除草效果,可显著减小草甘膦的顺风飘移距离,降低草甘膦飘移对大豆株高、地上部及根系干重和叶片叶绿素含量的毒害。在风速为4m/s时,顺风12m及以上距离,飘移控制剂可控制草甘膦不造成对大豆的危害。

Glyphosate drift onto off-target sensitive soybean may cause injury and reduce yields. To solve this prob- lem field experiment was conducted to determine the effect of drift control adjuvants（DCA） on glyphosate drift down wind and weed control in non-glyphosate-resistant soybean. The results showed that weed control did not be affected by DCA and drift distance down wind was significantly dismissed when DCA was tank mixed with glyphosate and at the same time soybean plant height, chlorophyll content, shoot and root dry weight were also unaffected. When dis- tance is over 12 meter down wind at wind speed 4 m/s ,DCA can control the injury to non-glyphosate-resistant soy- bean caused by glaphosate drift.