常德市光环农业科技有限公司的“一种含稀土海泡石化肥添加剂”的发明专利已于2013年授权,该专利成果根据海泡石的特点,将稀土和海泡石结合成添加剂,利用海泡石的吸附能力使稀土在土壤中得到稳定。该项专利填补了国内空白。三年来共生产该种含稀土海泡石的化肥五千余吨。实践证明该添加剂对农作物具有 Changde City Aura Agricultural Science and Technology Co., Ltd. “a rare earth sepiolite containing fertilizer additive ” invention patent was authorized in 2013, the patent results according to the characteristics of sepiolite, the rare earth and sepiolite combined into an additive, The use of sepiolite adsorption capacity of rare earth in the soil to be stable. The patent filled the gaps in the country. Three years to produce a total of more than 5,000 tons of fertilizers containing rare earth sepiolite. Practice has proved that the additive has a crop