| 简介 |
PURPOSE : A liquid rare earth fertilizer is provided to show high safety and high concentration of an undiluted solution and ensure high absorbability coefficient of crops by promoting rearing of crops.CONSTITUTION : A method for preparing a liquid rare earth fertilizer comprises : a first step of heating 30-35 parts of RE(Cl)3, wherein RE represents La, Ce, Pr, Nd, Pm, Eu, Gd, Tb, Dy, Er, Tm, Tb, Lu, Y or Sc, and 65-70 parts of urea in a double boiler in order to prepare an undiluted solution for the liquid rare earth fertilizer; a second step of adding 15-25 parts of distilled water to the prepared undiluted solution and mixing the mixture to prepare a liquid mixture; and a third step of cooling the mixture down to a room temperature. The liquid rare earth fertilizer has specific gravity of 1.3~1.5g/mL and pH of 6.© KIPO 2009 |
客服热线：
手机版
二维码
