A nursery stock slow release fertilizer is disclosed. The fertilizer is prepared by mixing 100 parts by weight of urea-formaldehyde, 30-50 parts by weight of soil improving slow-release particles, 20-30 parts by weight of calcium superphosphate, 10-20 parts by weight of potassium sulfate, 5-10 parts by weight of potassium chloride, 15-25 parts by weight of urea and 3-5 parts by weight of zinc sulfate, granulating and performing film coating. The fertilizer is comprehensive in nutrition, slow in release, long-acting, durable in fertility, and capable of greatly reducing the number of times of fertilization and effectively increasing nursery stock growth and quality.