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棉蚜在暖和地区终年产生幼虫,在凉爽地区产卵,为害甜瓜、棉花、黄瓜等10余种作物。为了考查21%增效马.氰乳油对棉蚜的防治效果,农技人员在朝阳县开展了防治效果试验,现总结如下。1材料和方法1.1供试药剂试验药剂:21%增效马.氰乳油(哈尔滨市益农生化制品有限公司生产),对照药剂:
Cotton aphids produce larvae throughout the year in warm areas and spawn in cool areas, killing more than 10 crops such as melons, cotton and cucumbers. In order to examine the 21% synergistic horse. Cyanide EC on cotton aphid control effect, agricultural technicians in Chaoyang County to carry out the prevention and control test results are summarized as follows. 1 Materials and methods 1.1 Test agents Test agents: 21% synergistic horse. Cyanide EC (Harbin Agricultural Chemicals Co., Ltd. Yimin production), the control agent: