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曾报告美洲中部某些地区农业喷药杀虫,使当地传疟媒介淡色按蚊的密度显著下降。例如,在沿海种植棉花区因大量使用有机氯、有机磷杀虫,使淡色按蚊数量减少,疟疾传播季节显著缩短。本文作者于1972年对产棉区和非产棉区喷药灭虫和淡色按蚊季节密度变化的关系进行了研究。在疟疾流行和发病率较高的产棉区,以100平方里的范围为观察区,当地雨季为4～10月。从5月开始,在固定的按蚊栖息场所,每周捕蚊一次,并利用诱蚊灯每周通宵诱捕一次,以观察淡色按蚊的密度。此外,选择该蚊种的各型
Insecticide pesticides were sprayed in agricultural areas in some parts of the Central America where the density of the local transmission vector Malaria was significantly reduced. For example, the season of malaria transmission was significantly shortened as a result of extensive use of organochlorines and organophosphorus insecticides in areas along the coast where cotton was planted, reducing the number of An. In 1972, the author studied the relationship between the season densities of sprayed insects and Anopheles pipiens in the cotton producing areas and non-producing cotton areas. In areas where malaria prevalence and morbidity are high, the observation area covers an area of 100 square meters. The local rainy season is from April to October. Starting from May, mosquitoes were caught mosquitoes once per week in fixed habitats for Anopheles mosquitoes. Trapped once a week overnight with mosquito lamps to observe the density of Anopheles stephensi. In addition, the various types of mosquito species are selected