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附着生物对航运、港工建筑、发电厂、水产养殖等危害性极大,因而很早便引起人们的普遍重视。我们在调查研究我国沿岸的附着生物中,把洞头岛列为调查点。并于1978年6月—1979年5月进行周年挂板试验。 洞头岛位于浙江东南部瓯江口外。试点设在岛西北面新码头外特设的浮筏,水流畅通,低潮水深5米左右,透明度低,水温年变化在7.8—28℃,最低二月份,最高8月份,年平均水温18℃,终年盐度均在27‰以上,最高达到34‰。 试验方法基本上按海洋调查规范进行,挂板分表、底两层,表层只挂木板,用尼龙丝系在水面以搜集藻类,底层试板固定在铁框架里,铁框用铁链垂直悬挂在水下2—3米深处。
Attached organisms are very harmful to shipping, port construction, power plants, aquaculture and other hazards, and so have attracted widespread attention very early on. In our investigation of the attached organisms on the coast of our country, we included Dongtou Island as an investigation point. And in June 1978 - May 1979 annual peg board test. Dongtou Island is located in the southeast of Oujiang River in Zhejiang. Pilot located in the island northwest of the new dock outside the ad hoc floating raft, smooth flow, the low tide of about 5 meters deep, low transparency, water temperature changes in the 7.8-28 ℃, the lowest in February, the highest in August, the annual average temperature of 18 ℃, Annual salinity are above 27 ‰, up to 34 ‰. The test method is basically carried out according to the marine survey norms. The hanging board is divided into two parts: the surface is only with wooden boards, the nylon wire is used to collect the algae on the water surface, the bottom test board is fixed in the iron frame, the iron frame is vertically hung with the iron chain 2-3 meters deep in the water.