Ecological nitrogenous fertilizer and preparation method thereof

The invention discloses an ecological nitrogenous fertilizer and a preparation method thereof. The ecological nitrogenous fertilizer comprises raw materials of, by weight, 60-80 parts of urea, 13-15 parts of ammonium chloride, animal hair, 5-7 parts of feathers, 20-30 parts of peat, 14-16 parts of modified pot clay, 0.6-0.8 part of zinc sulphate monohydrate, 0.2-0.4 part of micronutrients fertilizers, 3-8 parts of ferrous sulfate, 23-28 parts of chitin, 2-4 parts of modified nanocarbon, 2-4 parts of white poplar barberry root barks, 2-4 parts of lavender, 4-6 parts of paulownia barks, 3-5 parts of herbs of wilson passionflowers and 2-4 parts of Chinese wisteria. The feathers and the like are subjected to acid hydrolysis to generate amino acid, secondary and trace elements are subjected to chelation, a chelation structure of carboxymethylcellulose is added, effective utilization of the secondary and trace elements is facilitated, and invalid release of the secondary and trace elements is reduced; the white poplar barberry root barks, the lavender, the paulownia barks, the herbs of wilson passionflowers and the Chinese wisteria are added, so that pest and disease damage to soil is effectively reduced; and the ecological nitrogenous fertilizer is capable of obviously improving the fertilizer efficiency use ratio, the ecological nitrogenous fertilizer is only required to be applied for one time and then slowly and effectively released, frequency of fertilizer application can be reduced, fertilizer costs are reduced, and economic benefits are improved.