1材料与方法扇贝养殖区站位见图1。使用浅水Ⅲ型浮游生物网自水底至水面拖网采集浮游植物,采集到的浮游植物样品用5%甲醛固定保存。实验室内浮游植物样品经过静置、沉淀、浓缩后装入贮存瓶中并编号,样品在光学显微镜下鉴定种类、计数细胞数量。根据鉴定和计数结果,计算出每一种 1 Materials and methods Scallop breeding area stations see Figure 1. Phytoplankton was collected from the bottom to the surface of the water using a shallow water type plankton nets, and the collected phytoplankton samples were fixed with 5% formaldehyde. Laboratory samples of phytoplankton after standing, sedimentation, concentrated into the storage bottle and number, the sample was identified under a light microscope species, counting the number of cells. According to the identification and counting results, calculate each