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阿巴斯地区自1964年开始,每年用50％马拉硫磷可湿性粉剂按2克/米~2的剂量喷洒2～3次,至1975年6月已喷洒了22～23次。作者为了查明斯氏按蚊对该杀虫剂的耐药性,采用世界卫生组织供应的浸渍0.5％、3.2％、5.0％浓度马拉硫磷的药纸进行蚊虫
The area of Abbas has been sprayed 2 to 3 times per year with malathion 50% WP at 2 g / m ~ 2 since 1964 and 22 ~ 23 times by June 1975. In order to identify the resistance of Anopheles stephensi to the insecticide, mosquitoes were treated with tissue paper impregnated with 0.5%, 3.2% and 5.0% malathion supplied by the World Health Organization