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目前,天津市主养对虾的海水养殖面积达6万余亩,约有三分之一分布在永定新河两岸。由于永定新河承受着京、津地区的排污和汛期泄洪任务,加上海水养殖的自身污染,致使该水域严重污染,超富营养化等原因,导致赤潮灾害连年发生,给对虾养殖业造成惨重的经济损失。为给虾病的综合防治和赤潮生物的预测预报提供科学根据,服务于养殖生产,于1991～1995年,我们开展了永定新河下游虾池浮游生物和赤潮生物的种群结构及变化特点的调查研究,现将结果报告如下。
At present, the main marine culture of shrimp farming in Tianjin area of more than 6 acres, about one-third of the distribution in the Yongding River. As Yongding New River is subject to the discharge of Jing-Jin area and flood discharge tasks in flood season, coupled with its own pollution of mariculture, resulting in serious pollution of the waters, resulting in super-eutrophication and other reasons, causing red tide disaster year after year, causing heavy losses to shrimp farming The economic loss. In order to provide a scientific basis for comprehensive prevention and control of shrimp diseases and prediction and forecast of red tide organisms, and to serve for aquaculture production, from 1991 to 1995, we investigated the population structure and variation characteristics of plankton and red tide organisms in shrimp ponds of Yongding New River Research, the results are reported below.