稀土元素已逐步开始在农业上应用，在各种作物上的试验研究结果表明：稀土元素对促进农作物的生长发育、增加产量与改善品质都有很好的作用。因稀土是一系列化学性质相似的典型金属元素，而含稀土的化合物是酸性的、可溶性的，故不可直接施入土壤，否则就会与土壤中的盐类结合 Rare earth elements have been gradually applied in agriculture. Experimental results on various crops show that rare earth elements play a very good role in promoting the growth and development of crops, increasing yield and improving quality. Because rare earths are a series of typical metallic elements of similar chemical nature, rare earth-containing compounds are acidic and soluble and therefore can not be applied directly to the soil or they will combine with salts in the soil