10%“千红”可湿性粉剂防治烟草蚜虫药效试验

Effect of 10% Qianhong wettable powder(im idacloprid) on controlling tobacco aphid

进行10 %“千红”可湿性粉剂2 0 0 0倍液、30 0 0倍液、4 0 0 0倍液和4 0 %氧化乐果乳油2 0 0 0倍液4个处理防治烟草蚜虫的药效试验。结果表明,施药5 d后,各个处理的虫口减退率、防效均在90 %以上。其中,“千红”2 0 0 0倍液处理的防效最好,达到了10 0 %。

The effects of 10% Qianhong wettable powder(main composition is im idacloprid) at 3 concentrations, 2000×, 3000×, 4000×, and 40% Roxison at 2000×, on controlling tobacco aphid was carried out. The results showed five days after the treatment, both of the descent rate of the pest number and control rate were over 90% to all the treatments. The most significant control effect was observed in the treatment of Qianhong 2000× with 100% .