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本文总结了豫南地区嗜人按蚊空间分布与土壤关系和种群数量年际变化与降水关系的调查结果。通过不同土壤区的对比调查,证实了嗜人按蚊主要分布在黄棕壤性水稻土区,在水稻生长季节可向附近潮土性水稻区散布。通过二个点的连续调查和固始县十年恶性疟发病情况分析,证明了嗜人按蚊种群数量的年际变化受当年6—8月份降水量的直接影响,当该阶段降水量减少到350毫米以下时其种群数量明显减少。
This paper summarizes the findings of the relationship between spatial distribution of Anopheles anthropophagus and soil in South Henan and the relationship between annual variation of population and precipitation. Through comparative investigation of different soil regions, it was confirmed that Anopheles anthropophagus mainly distributed in the yellow-brown paddy soil area, and distributed to nearby tidal-soil rice region during rice growth season. The continuous investigation of two points and the analysis of 10-year incidence of falciparum malaria in Gushi county proves that the interannual variability of the population of Anopheles anthropophagus is directly affected by the precipitation in June-August of the year. When the precipitation is reduced to Its population decreased significantly below 350 mm.