有些读者可能会想,在海洋中不能长粮食,怎么能成为未来的粮仓呢?是的,海洋里不能种水稻和小麦,但是,海洋中的鱼和贝类却能够为人类提供滋味鲜美、营养丰富的蛋白食物。大家知道,蛋白质是构成生物体的最重要的物质,它是生命的基础。现在人类消耗的蛋白质中,由海洋提供的不过5%～10%。令人焦虑的是,20世纪70年代以来,海洋捕鱼量一直徘徊不前,有不少品种已经呈现枯竭现象。用一句民间的话来说,现在人类把黄鱼的孙子都吃得差不多了。要使海洋成为名副其实的粮仓,鱼鲜产量至少要比现在增加十倍才行。美国某海洋饲养场的实验表明,大幅度地提高鱼产量是完全可能的。在自然界中,存在着数不清的食物链。在海洋中,有了海藻就有贝类,有了贝类就有小鱼乃至大鱼……海洋的总面积比陆地要大一倍 Some readers may wonder why the grain can not grow in the oceans and how it can be the granary of the future. Yes, rice and wheat can not be planted in the oceans. However, the oceans and seashells provide the delicious food and nutrition for human beings Rich protein food. Everyone knows that protein is the most important substance that makes up an organism and it is the basis of life. Now human consumption of protein, provided by the ocean but less than 5% to 10%. What worries people is that since the 1970s, the amount of marine fish caught has been stagnant, and many varieties have been depleted. In a folk phrase, humans now eat almost all the grandson of the yellow croaker. To make the ocean a veritable granary, the output of fish should be at least ten times more than it is now. Experiments in a U.S. marine farm have shown that it is entirely possible to significantly increase fish production. In nature there are countless food chains. In the ocean, there are shellfish with seaweed, shellfish, there are small fish and even big fish ... The total area of ​​the ocean twice as big as the land