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据联合国粮农组织的调查估测，由于全球性的水资源短缺，世界农业用水的状况和前景不容乐观，同时，江河、湖泊的存水量因耗水量过多而大大减少，养殖业受到限制。近年来，世界水产养殖业迅猛发展，自１９８４～１９９９年，世界水产养殖业年产量从７００万ｔ增至２ ２５０万
According to the UN Food and Agriculture Organization (FAO) survey, due to the global shortage of water resources, the status and prospects of the world’s agricultural water use are not optimistic. At the same time, water storage in rivers and lakes is greatly reduced due to excessive water consumption, and aquaculture is limited. In recent years, the world aquaculture industry has developed rapidly. From 1984 to 1999, the annual aquaculture production in the world increased from 7 million tons to 22.5 million