Light rare earth leaf fertilizer, preparation method and fertilization method

The invention discloses a light rare earth leaf fertilizer, a preparation method and a fertilization method, and belongs to the technical field of leaf fertilizers. According to the foliar fertilizer disclosed by the invention, the problems that the sprayed foliar fertilizer slides off from the foliar surface due to relatively poor adhesive force of the existing foliar fertilizer on the foliar surface, the foliar fertilizer is wasted, effective components in the foliar fertilizer cannot be absorbed by the foliar surface, and the fertilization effect is relatively poor are solved; when the foliar fertilizer is used, the liquid fertilizer is firstly sprayed, and then the powdery foliar fertilizer is spread, so that light rare earth in the liquid fertilizer is fully contacted with the liquid surface, and starch and brown powdered sugar in the powdery foliar fertilizer are contacted with the liquid fertilizer to form paste, so that the direct viscosity of the foliar fertilizer and the foliar surface can be increa