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为掌握承德离宫的蝇类孳生情况,给防治提供科学依据,我们于1985年5～10月对以地表人粪块为主的蝇类孳生地进行了调查.共采集各类孳生物626份.阳性291份.阳性率为49.46%.其中地表人粪块阳性率为46.15%(264/572).厕所粪、尿
In order to grasp the breeding situation of flies in the Chengde Imperial Palace and provide a scientific basis for prevention and treatment, we investigated the breeding places of flies based on human faeces on the surface from May to October in 1985. A total of 626 kinds of breeding plants were collected. Positive 291.The positive rate was 49.46% .The positive rate of surface manure was 46.15% (264/572)