摘要
本文根据1982～1989年对三带喙库蚊早春出现情况的连续观察结果,结合气象资料,分析了上海海滨三带喙库蚊首次出现与地面风和高空风的关系,并与中华按蚊进行比较。结果发现三带喙库蚊首次出现日与地面S-ESE风向和高空SSW-W风向的吻合率显著高于中华按蚊,说明三带喙库蚊早春首次出现与地面S-ESE风向和高空SSW-W风向有关,提示该蚊早春虫源随南支天气系统由外地迁入的可能性。
This paper analyses the relationship between the first appearance of Culex tritaeniorhynchus in the early spring and the different wind directions on the ground and 850 HPA (about 1500 m heigh) by the continual observation of the appearance in the early spring of Culex tritaeniorhynens and the meteorological data in the years of 1982-1989, as compared with that of Anopheles sinensis. It was found that the percentage of the first appearance of Culex tritaeniorhynchus coinciding with the simulta- neous appearance of south to east-southeast winds (S-ESE) on the ground level and south-south west to west winds (SSW-W) at 850 HPA was signific- antly higher than that of Anopheles sinensis. The result demonstrated that the first appearane c of Culex tritaeniorhynchus in the early spring was related to both the S-ESE winds on the ground level and SSW-W winds at 850 HPA. It suggested that the pest origin of Culex tritaeniorhynchus in the early spring probably was immigrated from southern somewhere with the southern component weather system, But Anopheles sinensis has no such phenomenon.
关键词
风向
虫源
蚊虫
the wind direction
the pest origin
the southern component
weather system
