In the cultivation of magnolia, what are the requirements for fertilization?

Fertilization: apply solid fertilizer once to the orchid in winter, apply less nitrogen fertilizer, and apply more phosphorus and potash fertilizer. Eggshell powder and retting fish water is a good phosphate fertilizer, bran ash and soot are easily available potash. Nitrogen, phosphorus and potassium compound fertilizer can also be applied to promote the germination of more new plants and leaves. Fertilization must be appropriate, do not apply thick fertilizer and unfermented raw fertilizer, otherwise, it is easy to cause leaf tip scorch or rot.