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目的：探讨防制蚊媒的有效方法。方法：将棉纱蚊帐分别浸泡20mg／m2和10mg／m2三氟氯氰菊酯，在实验室进行持效生物测试。结果：浸帐后1年内对中华按蚊的平均致死率分别为80．1％和74．0％。实验小屋试验，在全闭帐条件下，蚊帐浸泡三氟氯氰菊酯40mg／m2后2~168天内，对中华按蚊和三带喙库蚊的平均毒杀率分别为72．5％和72．2％；与对照组比较，可减少蚊虫吸血率，中华按蚊为56.7％，三带喙库蚊为43．3％；在半闭帐条件下，浸帐后12～174天内对上述两种蚊媒的平均毒杀率分别为45．0％和38．6％，分别减少吸血率27．4％和32．3％。在20mg／m2全闭帐条件下，浸帐后2～14天内对中华按蚊和三带喙库蚊的平均毒杀率分别为49．8％和53．4％，分别减少吸血率60．3％和69．5％；在半闭帐条件下，浸帐后15～22天内对这两种蚊媒的平均毒杀率分别为30．3％和44．3％，分别减少吸血率30．0％和36．5％。结论：三氟氯氰菊酯浸泡蚊帐的剂量应不低于20mgai／m2，以确保防制蚊媒的效果和发挥控制疟疾流行的作用。
Objective: To explore effective methods for controlling mosquito vectors. Methods: The cotton mosquito nets were immersed 20mg / m2 and 10mg / m2 cyhalothrin, conduct a bio-test in the laboratory. Results: The average lethal rate of Anopheles sinensis in the one year after soaking was 80.1% and 74.0% respectively. In the experimental cabin experiment, the average poisoning rates of Anopheles sinensis and Culex tritaeniorhynchus were 72.5% and 72.2% respectively within 2 ~ 168 days after mosquito net soaked cyhalothrin 40 mg / %; Compared with the control group, mosquito sucking rate can be reduced, Anopheles sinensis is 56.7%, Culex tritaeniorhynchus is 43.3%; in the semi-closed conditions, 12 to 174 days after soaking the two mosquitoes Median average poisoning rates were 45.0% and 38.6%, respectively, to reduce the rate of aspiration 27.4% and 32.3%. The average poisoning rates of Anopheles sinensis and Culex tritaeniorhynchus were 49.8% and 53.4% respectively within 2 ~ 14 days after immersion at 20 mg / m2 full shut-off, reducing the rate of aspiration by 60% respectively. 3% and 69.5%, respectively. Under the condition of semi-closed-end, the average poisoning rates of these two mosquito vectors were 30.3% and 44.3% respectively within 15-22 days after immersion, which reduced the rate of aspiration 30 .0% and 36.5%. Conclusion: The dose of cyhalothrin nets should not be less than 20 mgai / m2 in order to ensure the effectiveness of mosquito control and to control the epidemic of malaria.