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虾类是各国人民喜爱的水产品.近年来,世界虾类产量逐年上升,1970年为100万吨,1977年突破150万吨,1985年增至190万吨,其中,养虾产量占虾类总产量的7%.虾类增产的主要原因是国际市场对虾类需求甚殷,从而促进了捕捞强度的增加以及新捕虾场的探捕与开发。据预测,到1990年世界虾类需求将增至190万吨。而目前普遍认为,虾类捕捞量已达极限,若要进一步增产,满足需求,只有靠发展养虾业来弥补,否则将发生供不应求的局面。据美国海洋渔业署声称,到1990年世界养虾
In recent years, the production of shrimp in the world has risen year by year, from 1 million tons in 1970 to 1.5 million tons in 1977 and to 1.9 million tons in 1985, of which the production of shrimp The main reason for the increase in shrimp production is the high demand for shrimp in the international market, which has led to an increase in fishing intensity and the exploration and development of new shrimp farms. It is estimated that the world demand for shrimp will increase to 1.9 million tons by 1990. At present, it is generally believed that the amount of shrimp caught has reached its limit. If we want to further increase production and meet the demand, we can only make up for the development of the shrimp industry. Otherwise, there will be an oversupply situation. According to the U.S. Marine Fisheries Agency, shrimp farming in the world by 1990