我国是稀土大国,稀土的储量及产量均占世界首位。由于稀土应用日益扩大,特别在我国已把稀土大量应用于农业、林业,并正在试用于饲养业作为饲料的微量添加剂,稀土将越来越多地进入人类生存的环境和食物链,近年来人们对稀土的生物学效应十分关注。许多科学工作者为了阐明稀土进入体内到底是有害还是有益,进行了许多研究和报道。 China is a rare earth power, rare earth reserves and production both in the world. Due to the increasing use of rare earths, rare earths have been widely applied to agriculture and forestry especially in our country and are being tested as trace additives for feed industry. Rare earths will increasingly enter the human environment and food chain. In recent years, The biological effects of rare earth is very concerned. Many scientists have conducted many studies and reports in order to elucidate whether the rare earth is harmful or beneficial to the body.