稀元土素是指化学元素周期表中的钪、镧、铈、镨、钕等17种元素。稀土微肥是以可溶性稀土元素为主的新型植物生长调节素。稀土微肥对作物生长的促进作用,主要表现在能使作物叶绿素含量增加,光合作用增强,对氮、磷、钾的吸收增多。据北京、湖南、天津、黑龙江、新疆、河南、江苏等地近几年的大量试验,稀土微肥在小麦、水稻等粮食作物上的 Rare earth element refers to the periodic table of the chemical elements of scandium, lanthanum, cerium, praseodymium, neodymium and other 17 kinds of elements. Rare earth fertilizer is soluble rare earth elements of the new plant auxin. Rare earths micronutrients on the role of crop growth, mainly in crop chlorophyll content can increase, photosynthesis increased, the absorption of nitrogen, phosphorus and potassium increased. According to a large number of experiments in Beijing, Hunan, Tianjin, Heilongjiang, Xinjiang, Henan, Jiangsu and other places in recent years, rare earth fertilizer in wheat, rice and other food crops