几种杀虫剂对玉米螟的防治效果研究

The Efficacy of Several Pesticides to Corn Borer

研究了几种杀虫剂对玉米螟的防治效果。结果表明,20%乙酰甲胺磷乳油5 400g/hm2,4 050g/hm2和3%辛硫磷颗粒剂效果较好;优打可湿性粉剂和20%乙酰甲胺磷乳油2 700g/hm2效果较差;建议在生产中优先选用20%乙酰甲胺磷乳油5 400g/hm2,4 050g/hm2喷雾或3%辛硫磷颗粒剂丢心防治玉米螟。也可把优打可湿性粉剂与3%辛硫磷颗粒剂或20%乙酰甲胺磷混用,以提高防治效果和降低农药残留。

The efficacy of several pesticides to corn borer was studied, the results showed that 20% acephata EC 5 400g/ha, 4 050g/ha and phoxim granule （3%） had good control effect,Bacil- lus thuringiensis WP and 20% acephata EC 2 700g/ha came the next. It was suggested that 20~ acephata EC 4 050g/ha,5 400g/ha or phoxim granule （3%） could be first selected to spray or to sprinkle for preventing corn borer in the field. Bacillus thuringiensis WP could be mixed with phoxim granule （3%） or 20% acephata EC, to increase the control effect and reduce the residue.