网箱养鱼在我国是一种新兴的科学养鱼方法。它具有效益高、见效快、水域适应性广、不消耗水资源、不与工农争水、不占土地、方法简便等优点,在大水面渔业生产上有着广阔的发展前景。网箱养鱼与传统的养鱼方式不同,放养的鱼种不直接投放到大水体,而是投放到设置在水体中的网箱里,既可培育大规格鱼种,也可精养商品鱼。我国目前大多采用4×4×2米~3的聚乙烯网箱,每亩网箱42只, Cage fish farming in China is a new method of scientific fish farming. It has the advantages of high benefit, quick response, wide adaptability of water area, no water consumption, no dispute with the workers and peasants, no occupation of land and simple and convenient method. It has broad development prospects in the production of large surface water fisheries. Cage culture and the traditional way of fish farming, stocking species are not directly put into the body of large water, but placed in the cages set in water, can cultivate large-scale species, but also intensive fish . At present, most of our country use 4 × 4 × 2m ~ 3 polyethylene cages, 42 cages per mu,