一、前言随着科学技术的发展,国民经济各部门对金和银的需要量不断增加。1981年世界黄金产量已达1150吨左右,基本满足需要。近几年来世界产银量变化不大,每年约10500吨,而银消费量每年达13000—15000吨。由于供不应求等原因,造成金、银价格上涨,仅1979年1月到1980年1月,这一年间国 I. Introduction With the development of science and technology, the demand of various sectors of the national economy for gold and silver is constantly increasing. In 1981 the world’s gold production has reached 1150 tons, basically meet the needs. In recent years, the world silver production has changed little, about 10,500 tons a year, while the annual consumption of silver reached 13,000-15,000 tons. Due to short supply and other reasons, resulting in gold and silver prices, only January 1979 to January 1980, this year