关键词: 溴氰菊酯, 浸泡蚊帐, 大劣按蚊, 疟疾传播

Abstract: In 1992 observations were made on the effect of deltatmethrin-impregnated bed nets for Controlling An dirus and the transmission of maiaria in Beiwan and Gexinrillages Beiwan Administrative District, Heping Township.Qiongzhong County、Heping Township locates ina mountainous area in Hainan Province,it is hyperendemic malaria area with An dirus as the major transmission vector, Beiwan and Gexin is the most serious endemie villages in this town The results show that the malaria incidence in the inhabitants in the district observed dropped down is likely relative to the pressure of anti-malaria drugs、 But the parasite rates in the inhabitants were higher than that before the employment of deltamethrin-impregnated bed nets and the density and occurence of seasonal peak of An. dirus were not affected in addition to the transmission of maiaria has not been interrupted.It has been considered that the results may bear close relation to the activities of the local inhabitants in the rillages in the evening. Besides.attention is also worthwhile to begiven to the resistance of An.dirus to deltamethrin.