1化肥养鱼的原理与特点 化肥养鱼的原理可以简单地概括为:通过施肥向水体补充营养物质,促进浮游植物大量繁殖,并使水生维管束植物、固着生物、自养性细菌等数量增加,在满足滤食性鱼类摄食的同时,也为吃食性鱼类提供部分食料。化肥养鱼具有肥效快,利用率高,操作简便,投工量少,便于机械化作业,成本低,效益好等特点。很多发达国家采用化肥养鱼,如美国用化肥养罗非鱼和太阳鱼;德 Principle and characteristics of a fertilizer for fish farming The principle of fertilizer for fish farming can be simply summarized as: to supplement nutrients by fertilizers to promote the mass production of phytoplankton, and to increase the number of aquatic vascular plants, anchoring organisms and autotrophic bacteria, While feeding on filter-feeders, it also provides some foodstuffs for eating fish. Fertilizer fish with fertilizer fast, high utilization, easy to operate, less work, easy mechanization, low cost, good efficiency and so on. Many developed countries use chemical fertilizers such as tilapia and sunfish in the United States; Germany