微囊藻(Microcystis)是一类害藻，生长在池塘、外荡、湖泊等水域，在鱼生长旺季大量繁殖形成水华，漂浮水面呈翠绿色或绿油漆色，对渔业生产及水环境污染较严重。随着渔业大力发展和产量的大幅度提高，池塘有机物增多，塘泥增厚，水质日趋富营养化，微囊藻水华发生率明显增加， Microcystis is a kind of harmful alga, which grows in the ponds, swarms and lakes and other waters. It multiplies and forms blooms during the growing season of fish. The floating surface is emerald green or green paint color, which is harmful to fishery production and water environment pollution More serious. With the vigorous development of fisheries and the substantial increase of production, organic matter in ponds increased, thickening of ponds and water quality became more and more eutrophic. The incidence of Microcystis bloom increased obviously,