论文部分内容阅读
采用面上调查,实验室和现场观察相结合的方法对元江流域的媒介防制措施执行情况及效果进行综合评价。结果为:目前元江流域的主要疟疾媒介控制措施系DDT滞留喷洒;该措施能有效控制主要媒介微小按蚊,但不能控制次要媒介中华按蚊,而且对按蚊有兴奋驱避作用;DDT的残效期为80d左右,该地区主要疟区(河谷)年流行时间在9个月以上,每年需要进行2～3次喷洒水能控制疟疾媒虫的活动,但目前投入经费所购买的DDT远远满足不了需要喷洒的数量和范围的要求,而且喷洒质量达不到要求标准,因而不能有效控制疟疾传播;按使用DDT滞留喷洒数量计算,目前购买杀虫剂的投入仅能满足42.82％的需求,但若按使用溴氰菊酯浸泡蚊帐计算,仅 用现在杀虫剂费用的50.75％就可满足需求。基于DDT滞留喷洒的效果,经费和操作方面的限制,该项措施应该逐渐被其它控制策略所替代。
A comprehensive evaluation of the implementation and effectiveness of media control measures in the Yuanjiang River Basin was conducted by means of a combination of surveys conducted on the surface and laboratory and field observations. As a result, the main malaria vector control measures in the Yuanjiang River Basin were DDT retention spraying. This measure effectively controlled the main Anopheles minor mosquito, but could not control the minor vector Anopheles sinensis, and was also repellent to Anopheles mosquitoes. DDT The residual validity period is about 80 days. The annual prevalence of malaria (river valley) in the area is over 9 months. The need for spraying water 2-3 times a year can control the activity of malaria-carrying worms. However, Can not meet the required quantity and scope of spraying requirements, and the spray quality does not meet the required standard, which can not effectively control the spread of malaria; DDT by using the number of residual spray, the current purchase of pesticides to meet only 42.82% of the demand, However, based on the use of deltamethrin soaps, 50.75% of the current costs of pesticides will be sufficient. Due to the effects, funding and operational constraints of DDT stranded sprinkler spraying, this measure should gradually be replaced by other control strategies.