研究了有机硅产品杰效利对吡虫啉、啶虫脒、烯啶虫胺等药剂防治蔬菜烟粉虱的田间增效作用和药剂减量效果.研究结果表明,添加250 g/hm2杰效利可使10%吡虫啉可湿性粉剂750 g/hm2、20%啶虫脒可溶性液剂750 g/hm2和10%烯啶虫胺水剂750 g/hm2处理药后1、3、7 d对花菜烟粉虱的防效比未加杰效利处理分别提高22.18~32.19、12.08~24.98,13.07~17.86个百分点.研究还发现,在保证对烟粉虱防治效果的情况下,使用有机硅杰效利可有效减少药剂用量33.3%~50%.由此可见,有机硅杰效利对药剂防治蔬菜烟粉虱有较好的增效作用,同时还可有效减少药剂的使用量.% In the paper, we studied the synergistic effects of organosilicon spray additives Jiexiaoli on preventing and controlling Bemisia tabaci accompanied with several pesticides such as imidacloprid, acetamiprid and nitenpyram, and we also studied its effects on reducing the dosage of the three pesticides. The results showed that, by adding 250 kg/hm2 of Jiexiaoli, the control efficiency of 10% imidacloprid wettable powder (WP), 20% acetamiprid soluble concentrate (SL) and 10% nitenpyram aqueous solution (AS) were increased by 22.18%-32.19%, 12.08%-24.98% and 13.07%-17.86%respectively after 1, 3 and 7 days of applying the pesticides with their dosage of 750 kg/hm2. Thus, the organosilicon spay additives Jiexiaoli could improve the control efficiency of the pesticides against B. tabaci and effectively reduce the dosage of the pesticides by 33.3%-50%.
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