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搞好环境卫生，控制蝇类孳生，是创建“卫生城市”的重要内容。为掌握西宁市区的蝇类密度、季节消长、孳生繁殖场所，为灭蝇提供依据，我们1995年在西宁定点进行了蝇类季节消长情况调查。调查方法1器械：天幕式诱蝇笼。2时间：4月上旬至11月下旬，上午9时放笼，下午5时收笼。3
Doing a good job in environmental hygiene and controlling fly breeding is an important part of creating a “health city.” In order to grasp the density of flies in Xining City, the season of growth and decline, breeding sites for the fly to provide the basis for, we fixed-point in Xining in 1995 conducted a flies season growth and decline surveys. Survey method 1 device: canopy fly bait cage. 2 Hours: Early April to late November, 9 am release cage, 5 pm closed cage. 3