应将有限量的杀虫药物首先用于无休止期的流行区、病灶区或暴发性流行区,喷洒至少须连续三年。在无休止期疟区,如用二二三喷洒,每年要喷一至二次,如用六六六喷洒,每年喷洒三次。在有休止期疟区,如用二二三喷洒,每年喷洒一次,如用六六六喷洒,每年喷洒二次。在暴发性流行区, A limited amount of insecticide should be used for the first time in the euthanasia epidemic area, focal area or outbreak area, spraying for at least three consecutive years. In the never-ending malaria zone, spraying with two two three is sprayed one or two times a year, spraying three or six times a year. In the dormant malaria area, such as two two three spraying, spraying once a year, such as six six six spraying, spraying twice a year. In an area of ​​pandemic,