伊朗南部疟疾的主要媒介斯氏按蚊,对二二三和狄氏剂已产生抗药性。1968年用50%马拉硫磷可湿性粉剂,每平方米2克,每年喷洒1～3次,控制了部分沿海平原地区的斯氏按蚊,但在丘陵地带和山区仅能减少该蚊的活动。虽然用马拉硫磷防制斯氏按蚊有一定的效果,但仍有产生抗药性的可能,因此需要选用适当的化学物替代。为此于1977年7～10月间,试用(口恶)虫威(Bendiocarb,化学名为2,2-二甲基-1,3苯骈二(口恶)茂-4-基-(N- Anopheles stephensi, the major malaria agent in southern Iran, has become resistant to Erzan and Dieldrin. In 1968, 50% malathion WP, 2 grams per square meter, was sprayed once or 3 times a year, controlling anopheles schrenckii in some coastal plains, but only reducing it in hilly and mountainous areas activity. Although using malathion to control Anopheles stephensi has a certain effect, it still has the possibility of producing drug resistance, therefore, it is necessary to select appropriate chemical substitutes. Therefore, in July-October 1977, Bendiocarb (chemical name 2,2-dimethyl-1,3-benzodioxol-4-yl- -