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调查发现,福州市区大批建筑工地的地基水泥池和地下层严重积水,是目前城市蚊虫繁殖的大本营,平均幼虫密度为406条/勺,严重者高达2342条/勺,1个8m2积水池每夜羽化约3000只雌蚊,1座正在施工的建筑工地每夜至少羽化10万只新吸血蚊。白天在工地人饵诱捕,白纹伊蚊叮咬率平均786只/人工小时;夜间,工地周围居民区致倦库蚊和白纹伊蚊叮咬率为162.5只/人工小时,是普通居民区的16.2倍。
The survey found that a large number of construction sites in Fuzhou, a large foundation of underground cement pool and waterlogging, is currently the city’s mosquito breeding base camp, the average larval density of 406 / spoon, severe up to 2342 / spoon, a 8m2 water The pool feels about 3,000 female mosquitoes per night, with at least 100,000 new mosquitoes emerging from one of the construction sites under construction overnight. In the daytime bait trapping at the site, Aedes albopictus bites rate average 786 / artificial hours; at night, around the site of residential Culex pipiens pallens mosquitoes and Aedes albopictus bite rate of 162.5 / artificial hours, is the ordinary residential area 16.2 times.