10种药剂防治大葱蓟马田间药效试验

Field Efficacy of Ten Pesticides on Controlling Scallion Thrips

试验研究了10种药剂对大葱蓟马的防治作用。结果表明:4.5%高效氯氰菊酯乳油效果最优,药后第1、3、7天的防效分别为96.89%、98.87%和94.26%,其次是2.2%阿维.吡虫啉乳油和0.3%苦参碱水剂。3种药剂的防效均达90%以上,明显优于其它药剂,且速效性好,持效期长。

The experiment was carried out to determine the controlling efficacy of ten pesticides on thrips in scallion fields.The results showed that the effect of 4.5% cypermethrin was the best with the control effect of 96.89%,98.87% and 94.26% respectively on the first,third and seventh day after controlling.Second were 2.2% avermectin imidacloprid and 0.3% matrine.The three pesticides were obviously better than the others with the control effect more than 90% and showed rapidly available and longer persistent period.