不同除草剂防治甘薯田杂草药效试验

Efficacy Test of Different Herbicides to Control Weeds in Sweet Potato Field

通过6个除草剂药剂16个不同处理,研究并比较甘薯大田使用不同化学除草剂的除草效果。结果表明,药效最好的是5%精喹禾灵乳油,施用量2 700 mL/hm2;15%精吡氟禾草灵乳油效果次之,施用量1 800 mL/hm2。甘薯大田除草推荐使用5%精喹禾灵乳油,施用量2 700 mL/hm2。最佳除草剂施用期为杂草2～3叶期。

By 6 kinds of herbicides with 16 treatments,weeds control effects were studied in sweet potato field.The results showed that the best herbicide is 5% quizalofop-p-ethyl EC with optimum application concentration 2 700 mL/hm2.The second herbicide is 15% fluazifop-p-butyl EC with optimum application concentration 1 800 mL/hm2.The optimum weeds control method for sweet potato field is to use 5% quizalofop-p-ethyl EC at 2 700 mL/hm2 in 2-3 leaf stage of weeds.