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本文报道连续3年用有机磷化合物甲嘧硫磷(Pirimiphos methyl WDP,简称O. P)在印度东北部进行屋内滞留喷洒的实验结果。实验在3个地区进行,(1)人口密度17/km~2,O. P用量1g/m~2;(2)人口密度12/km~2,O. P用量2g/m~2,每年喷3遍;(3)人口密度18/km~2,DDT用量1g/m~2,每年喷2次。每隔两周的上午6:30～8:30,从人房和牲畜棚收集蚊虫以测定室内残余蚊密度,并用捕蚊器收集下午6:00至翌晨6:00的蚊虫,测定室内、外的嗜人蚊数。另用20～30只多斑按蚊进行生物学分析,确定喷洒效力,并对发热病例血检进行寄生虫学观察。
In this paper, we report the experimental results of three-year indoor spraying with Pirimiphos methyl WDP (O.P) in northeastern India. The experiments were carried out in three regions: (1) population density of 17 / km ~ 2 and O. P dosage of 1 g / m ~ 2; (2) population density of 12 / km ~ Spray 3 times; (3) population density 18 / km ~ 2, DDT dosage 1g / m ~ 2, spraying 2 times a year. Mosquitoes were collected from human houses and livestock sheds every 6 weeks from 6:30 to 8:30 every two weeks to determine the residual mosquito density in the indoor area. Mosquitoes from 6:00 pm to 6:00 am were collected by mosquito traps, The number of outsiders mosquito. Another 20 to 30 Anopheles mosquitoes for biological analysis to determine the effectiveness of spraying, and blood samples for fever parasite observation.