日本函馆市北海道立工业技术中心进行一项在鱼礁上拉上电屏障养殖蟹类和鲍鱼的海洋牧场高级技术研究,这在世界上极为少见。由于引进只有在必要时才拉上屏障的节电装置,所以经济性能优良,1990年全部实验结束将进行实际使用。该中心在水深20米处海底设置25平方米的水泥制鱼礁,在鱼礁上用铜合 Hokkaido, Japan, Hakodate Industrial Technology Center Conducting a high-tech research project on marine pastures where electrocarriers breed crabs and abalone on the reefs is extremely rare in the world. Economical performance is good due to the introduction of a power-saving device that pulls the barrier only when necessary, and will actually be used by the end of all experiments in 1990. The center of 25 meters deep in the water depth of 25 square meters of cement reefs, reefs with copper