蚌、鱼养殖模式对水体富营养化控制作用的研究  

The Role of Co-Cultivation of Pearl Mussels and Fishes in the Control of Eutrophication

作　　者：张根芳[1] 邓闽中[2] 方爱萍 

机构地区：[1]金华职业技术学院动物工程系,浙江金华321007 [2]杭州市水产科学研究所,浙江杭州310029 [3]金华市威旺养殖新技术有限公司,浙江金华321017

出　　处：《中国海洋大学学报（自然科学版）》2005年第3期491-495,共5页Periodical of Ocean University of China

基　　金：浙江省自然科学基金项目 (Y30 4 397)资助

摘　　要：为了探索控制水体富营养化的新方法,在5～9月长江中下游地区水体富营养的发展期,通过野外规模性试验,即水体吊养珍珠蚌并搭养少量鱼类,然后定期测定4个主要富营养化指标,观察水生生物种群和数量。结果表明,养蚌育珠并搭养适量鱼类可以使2 0～40cm的水层形成附着丝状藻类、原生动物、腔肠动物、多孔动物和苔藓动物等多种附着生物,使N ,P ,COD和BOD5含量分别下降67.3 % ,73 .2 % ,3 8.1%和15 .5 % ,起到了明显控制富营养化的作用,同时还能收获珍珠、蚌肉和贝壳等产品。比其他控制方法具有更好的实际应用性。In order to seek a new measure to control eutrophication, field experiments were conducted during may through September, when eutrophication was developing. Pearl mussels and certain fishes were co-cultured, meanwhile four main eutrophication indexes were determined regularly, and the populations of the aquatic organisms observed. It was found that a new biocoene came into being in a layer 20-40cm under the surface, composed of filamentous algae, protozoa, porifera, coelenterate and bryozoa, which were attached to the ropes, nets, floats and shells. The contents of nitrogen, phosphorus, chemical oxygen and biochemical oxygen were thus reduced by 67.3%,73.2%,38.1% and 15.5%, respectively. The eutrophication was brought under control, and aquatic products such as pearls, shellfish meat and shells etc. were gained. This method of control is better than other methods in practical application.

关 键 词：珍珠蚌 养殖 水体富营养化 控制 

分 类 号：S968.3[农业科学—水产养殖]