青岛市属大陆性海洋气候，城区三面环海，冬干夏潮，年平均气温１２℃左右，降水量４００ｍｍ左右，适宜四害繁衍栖息。１四害种类与分布１．１鼠类居民区主要为褐家鼠、小家鼠，其次为大仓鼠；野外优势种为黑线姬鼠，其次为小仓鼠、大仓鼠、褐家鼠、小家鼠等。１．２蟑螂... Qingdao City is a continental maritime climate, surrounded by the sea on three sides of the city, winter and dry summer tide, the annual average temperature of about 12 ℃, the precipitation is about 400mm, suitable for four pests multiply habitat. 1 Four species and distribution of four pests 1.1 Rodents mainly residential Rattus norvegicus, Mus musculus, followed by a large hamster; the dominant species of Apodemus agribus, followed by hamster, hamster, brown house mouse, small House mouse and so on. 1.2 cockroaches ...