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珍珠是华贵装饰品与名贵药材。天然河蚌产珍珠极少,但根据成珠原理,可人工培育。德清县1968年开始人工养殖珍珠,1982年年产量达1200斤。1984年产珍珠2219斤,创历史最高记录。资料表明,60—70只育珠河蚌经过三夏二冬(2—3年)时间养殖,可产珠一市斤,每斤价值一千元以上。本县中、东部地处杭加湖平原水网地区,气候条件适宜三角帆蚌生活,所以本县发展河蚌育珠较快,珍珠质量名列前茅。
Pearl is luxurious decorations and expensive herbs. Natural mussels produce very few pearl, but according to pearl principle, artificial cultivation. Deqing County began artificial breeding pearl in 1968, the annual output in 1982 up to 1200 kg. Produced in 1984, pearl 2219 pounds, the highest record. Data show that 60-70 Yushen pearl mussels after three summer and two winter (2-3 years) farming, can produce a pearl per kilogram, more than 1,000 yuan per catty. The middle and east of the county is located in Hangjiahu plain water network area, climatic conditions suitable for Hyriopsis mussel life, so the development of mussels in the county faster mussel, pearl quality among the best.