稀土是镧系元素和钪、亿共十七种元素的总称。而目前用于农业上稀土化合物主要是镧、铈、镨、汝等四种元素。稀土农用示范推广工作是我国一项新的科研领域中开发性的研究课题,是国家科委新技术局下达的“六五”期间国家重点科技攻关项目内容。我所于1982年参加了“稀土农用研究与示范协作网”,进行了葡萄喷洒不同浓度的硝酸稀土肥效试验,对提高葡萄浆果的产量和品质都 Rare earth elements are lanthanides and scandium, a total of 17 kinds of elements of a total of billion. At present, rare earth compounds used in agriculture are mainly lanthanum, cerium, praseodymium, and other four elements. Rare Earth agricultural demonstration and extension work is a new research topic in our field of development, which is the key national scientific and technological project during the “6th Five-Year Plan” issued by the State Science and Technology Commission of New Technology Bureau. I participated in the “Rare Earth Agricultural Research and Demonstration Network” in 1982, carried out grape spraying different concentrations of rare earth nitrate fertilizer efficiency test to improve the yield and quality of grape berries are