42%氟啶草酮悬浮剂对棉花后茬作物的安全性

The Safety of Fluridone 42%SC to Cotton Succeeding Crop

[目的]探讨42%氟啶草酮悬浮剂对棉花后茬作物的安全性。[方法]开展了42%氟啶草酮悬浮剂对棉花3种后茬作物小麦、马铃薯、油菜的安全性试验。[结果]42%氟啶草酮悬浮剂220.5、441、661.5 g a.i./hm^(2)(推荐剂量的中值、中值的2倍、中值的3倍)对棉花3种后茬作物安全,出苗率(移栽成活率)、生长量(株高、鲜质量等)、最终产量等性状指标与清水对照处理区无显著性差异。[结论]42%氟啶草酮悬浮剂可用于棉花田芽前除草,对后茬小麦、马铃薯、油菜安全。

[Aims]This paper aims to study the safety of fluidone 42%SC on succeeding crop in cotton field.[Methods]The safety tests of fluidone SC 42%on wheat,potato and rape of three cotton succeeding crops were carried out.[Results]Fluidone 42%SC 220.5,441,661.5 g a.i./ha(median recommended dose,2 times of median dose,3 times of median dose)were safe for three succeeding crops.There was no significant difference in seedling emergence rate(transplanting survival rate),growth amount(plant height,fresh weight,etc.)and final yield between the herbicide treatment area and water control area.[Conclusions]Fluridone 42%SC can be used to control weeds in cotton field before bud,and it is safe to cotton succeeding crop wheat,potato and rape.