防治棉铃虫药剂田间筛选试验研究

1997、1998年在二代棉铃虫自然严重发生条件下，选用8种药剂及其混用处理，分别于卵高峰期和低龄幼虫期进行田间药效试验。结果表明，在当代卵高峰期施药1次，Bt与甲久乳油及水胺硫磷混用防效较好；在卵孵化高峰期施药，以硫丹和胺西菊酯防效较好，其次为快杀灵、乐斯本和丙溴磷。

Study on the Field Screening of Some Insecticides against Cotton Bollworm

Field efficacy test were carried out in 1997 and 199 8 for screening some insecticides and their mixtures against cotton bollworm.The treatment of 8 insecticides were appllied to control second generation cotton bollworm at the egg peak stage and the peak stage of the hatching.The result showed that mixture of Bt and Isocarbophos EC,mixtrue of Bt and Jiajiu EC had good effect when the mixtures were sprayed at the egg peak stage.When sprayed the insecticides at the peak stage of the hatching,Endosulfan EC and Anxijuzi EC showed better effect,the effect of Kuaishaling EC and Chlorpyrifos EC and Profe nofos EC was second.