饲料是发展养鱼生产的物质基础。众所周知,我国是一个人口众多的国家,要利用仅占世界耕地7%的面积,养育着占世界人口22%的国家。因此,满足我国人民吃饭是主要问题。多年来,我国用于饲料粮只占粮食总产量不到20%,而发达国家将总产量70%以上的粮食作为饲料。我国的饲料大多来源于满足食粮和其他用粮之后的剩余粮食和副产品。饲料供应既不充分又不稳定。今后要依赖粮食有效幅度的增长,来缓解饲料紧缺问题的可能性不大。鉴于上述情况的 Feed is the material basis for the development of fish production. It is well known that our country is a populous country that uses only 7% of the world’s cultivated land to raise 22% of the world’s population. Therefore, meeting our people’s eating is the main issue. Over the years, China’s feed grain has accounted for less than 20% of the total grain output while developed countries have used more than 70% of the total grain output as feed. Much of our feed is derived from surplus food and by-products after food and other food supplies are met. Feed supply is neither adequate nor stable. In the future it is unlikely that it will depend on the effective growth of grain to ease the shortage of feedstuffs. In view of the above situation