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[目的]明确14%草酮·乙氧氟草醚乳油对棉花田杂草防效和对棉花的安全性。[方法]采用茎叶喷雾施药,定期调查的方法进行了田间药效试验。[结果]药效试验表明,14%草酮·乙氧氟草醚乳油的推荐用量为336~504 g a.i./hm2。施药45 d后对杂草总体防效可达94.43%。[结论]14%草酮·乙氧氟草醚乳油能够有效防除棉花田杂草并对棉花具有较好的安全性。
[Objective] The research aimed to clarify the weed control effect of 14% herbicide oxyfluorfen EC on cotton weeds and its safety to cotton. [Method] The field efficacy test was carried out by using spray of stem and leaf and regular investigation. [Result] The results showed that the recommended dosage of 14% herbicide of oxyfluorfen EC was 336 ~ 504 g a.i./hm2. After 45 d, the overall control effect on weeds reached 94.43%. [Conclusion] 14% of the herbicide oxytocin EC could effectively control weeds in cotton field and had good safety to cotton.