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稀土系化学元素周期表中的镧系元素和钪、钇等17种化学元素的统称.稀土农用研究在国际上是项没有解决的新课题.早在本世纪三十年代,苏联学者普·弗·萨沃斯金等就发现稀土对小麦的生长和橡胶革干胶含量的提高有促进作用.六十年代以后,罗马尼亚、保加利亚、日本、美国、菲律宾等,相继就稀土对玉米、大豆、蚕豆和甜菜等进行了一些试验研究,但尚未实用于农业生产.我国农用稀土研究起步较慢,但进展很快.1972年开始研究,先后在北京、湖南、
Rare earth elements in the periodic table of the chemical elements of the lanthanides and scandium, yttrium and other 17 kinds of chemical elements collectively .Research on rare earth agriculture in the world is an unsolved new topics.As early as the 1930s, the Soviet scholar Pu Fo · Savoskin et al. Found that rare earths can promote the growth of wheat and the increase of rubber adhesive content.After the 1960s, Romania, Bulgaria, Japan, the United States, the Philippines and so on, on the rare earth corn, soybeans, broad beans And sugar beet, etc., but have not been applied to agricultural production yet.Research on rare earths for agricultural use in our country started relatively slowly but progressed rapidly.Started in 1972, it has been successively studied in Beijing, Hunan,