辽宁省北票市近几年来普遍采用日本的削膜法制片育珠技术,使单位面积产量提高一倍多,经济效益也提高一倍多,养殖周期缩短一年。1990年90亩育珠水面,68400只育珠蚌,采收珍珠512.1公斤、收入40.968万元。其中以削膜法制片的54720只蚌,采收珍珠456公斤,收入36.48万元,平均120只 In recent years, Beipiao City, Liaoning Province, has generally adopted Japan’s bamboo-cutting method of bamboo-ball making, which has more than doubled the yield per unit area, doubled the economic benefits and shortened the breeding cycle by one year. In 1990 90 acres of Yu Zhu water surface, 68400 only pearl mussel, harvest pearls 512.1 kilograms, income 40.968 million yuan. Among them, 54,720 mussels were produced by the method of cutting film, 456 kilograms of pearls were harvested, with an income of 364,800 yuan, an average of 120