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我省使用球形芽孢杆菌(BS)较为普遍,1988～1990年曾在市区坑塘连续使用BS杀灭淡色库蚊幼虫,累计面积为4万m~2。为进一步观察其灭效,三年来我们设点分别进行了观察。结果如下: 一、材料与方法: 1.实验区选择:设市区东部自行车监理站门东污水坑、北部卫校西污水沟为观察点,水中杂草生
In our province, the use of Bacillus sphaericus (BS) is more common. From 1988 to 1990, BS was used continuously to kill Culex pipiens pallens larvae in urban pit ponds, accumulating an area of 40,000 m ~ 2. In order to further observe its out of effect, we set the point three years were observed. The results are as follows: First, the material and method: 1.Experimental area selection: The east sewage pits of the bicycle monitoring station in the eastern part of the urban area and the western sewage sewer of the northern part of the Weiyuan area are the observation points.