珍珠粉是一种珍贵的药材,在水产养殖上亦是一种上佳的饲料添加剂。 珍珠粉、层粉、贝壳粉(以下简称“三粉”)含丰富的天然营养物质。根据对这些物质的测试分析:一是它含有20多种矿物微量元素,其中特别是含离子钙、锶、硒、铯、锗、镧等为常人不能复配,又为鱼虾等所必需的微量 Pearl powder is a precious medicinal material that is also a good feed additive for aquaculture. Pearl powder, layer powder, shell powder (hereinafter referred to as “three powder”) is rich in natural nutrients. According to the test analysis of these substances: First, it contains more than 20 kinds of mineral trace elements, including ionized calcium, strontium, selenium, cesium, germanium, lanthanum and other common people can not be complex, but also for fish and other necessary Trace