所谓赤潮 ,就是浮游生物在短期内迅速繁殖并聚集蔓延 ,导致海水变色 ,同时散发出怪异恶臭味的海洋现象。赤潮生物的大量繁殖 ,是由于城市工业向海洋大量排放富含营养物质 (如氮、磷等有机元素 )的污水。同时农田大量使用化肥 ,排出的污水中含有大量的有机物和无机物 ,造成海水 The so-called red tide, plankton quickly multiply in the short term and gather to spread, resulting in discoloration of the sea, while exudes a strange odor of the ocean phenomenon. The blooming of red tide organisms is due to the massive discharge of sewage-rich nutrients (such as nitrogen and phosphorus) from urban industries to the oceans. At the same time large-scale use of farmland fertilizer, sewage discharged contains a large number of organic and inorganic substances, resulting in seawater