近年来，由于工业污水、生活污水、农业灌溉尾水及养殖废水的大量排放，给近海水域造成严重污染，成为制约海水养殖业发展的重要因素之一。黄河三角洲附近沿海海水育苗场，大多建在入海的河道两侧，育苗海水取自河道的潮汐水。由于该区域９０％以上的陆源性污染物质是通过河流? In recent years, due to the large discharge of industrial sewage, domestic sewage, agricultural irrigation tail water and farming wastewater, causing serious pollution to the offshore waters, it has become one of the important factors restricting the development of marine aquaculture. Coastal seawater nurseries near the Yellow River Delta are mostly built on both sides of the river into the sea, and seedling seawater is taken from the tidal waters of the river. As more than 90% of the land-based pollutants in the area are transported by rivers?