小窑湾海水养殖环境现状的研究

2000年3－11月对小窑湾水域质量进行了9航次10个指标的海上调查，结果表明该水域质量符合国家一类标准。叶绿素a值夏季高于冬季，IN值冬季高于夏季，COD值4、5、6月均值高出其他月份均值43个百分点，IP值上半年高于下半年。海区营养属贫脊型。同时揭示了高密度双壳贝类浮筏养殖对海区水质的负影响较小，该海域养殖贝类的死亡主要是因饥 饿引发的贝体较弱，抗病力较差。

Environment characteristics and aquaculture state of Xiaoyao Bay

From March to November in 2000, 10 environmental factors were studied in Xiaoyao Bay. The surveys showed that the 10 environmental factors were in accordance with the First class Water Quality Standard. The concentrations of chlorophyll a were higher in summer than that in winter. The concentrations of inorganic nitrogen were higher in autumn than that in summer. The content of COD from March to May are 29% higher than that of other month, the mean concentrations of phosphate in the first half a year were higher than that in the last half a year. Also, the bay water was found to be oligotrophic. The impact of high density bivalve raft cultivation on the water was minimal, and that the main reasons of cultivated bivalve death were due to the weak and low resistance against disease caused by starvation.