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目前,日本的栽培渔业主要是以栽培渔业中心、自治团体、渔协等为中心,以日本对虾、真鲷、三疣梭子蟹等为主要对象的全国性的种苗生产、放流事业。种苗大量生产技术作为放流的先决条件业已确立并积累了许多宝贵的经验。特别是近年来,种苗生产、放流的种类和数量不断地增加,从1980年的成果来看,全日本共放流真鲷1,000万尾,日本对虾近3亿尾,独角新对虾和三疣梭子蟹各1,000万尾。象这样栽培渔业的规模虽在不断地扩大,但是放流海中的种苗在自然的环境中生长后,实际上对促进资源的增殖以致最后能够对渔业生产作出多大贡献,换句话说也就是种苗的放流效果至今尚不
Currently, Japan’s cultivated fisheries are mainly national seedling production and diversion businesses focusing on cultivation of fisheries centers, autonomous communities and fisheries associations, and Japan shrimp, red sea bream, Portunus trituberculatus, and others. Seedling mass production technology as a prerequisite for letting go has established and accumulated many valuable experiences. In recent years, the species and quantity of seed production and discharge have been continuously increasing. According to the results of 1980, there were 10 million red sea breams in Japan, 300 million Japanese shrimp, Each 10 million. Although the scale of cultivation of fisheries like this is constantly expanding, the seedlings that flow into the sea, after they have grown in a natural environment, actually contribute to the proliferation of resources so that they can eventually make a significant contribution to fishery production, in other words, seedlings The release of the effect is still not yet