The invention discloses an environmentally-friendly chemical
fertilizer capable of improving
saline-
alkali soil and a preparation method of the chemical
fertilizer. The chemical
fertilizer is prepared from the following components, in parts by weight: 80-120 parts of wormcast, 40-60 parts of
domestic waste, 120-150 parts of
farmyard manure, 60-80 parts of
plant ash, 80-100 parts of
straw, 20-40 parts of a microbial fertilizer, 40-60 parts of pine needle soil, 40-60 parts of
traditional Chinese medicine residues, and 20-40 parts of washing water of rice. The preparation method provided by the invention is simple, the costs are low, and when the chemical fertilizer is used for a long term, the
saline-
alkali soil and soil hardening can be improved; and during preparation, the prepared particles are sent to a dryer for
drying treatment, the surfaces of the particles are subjected to roughening treatment to increase gas permeability, pelletization is realized to prevent the particles from being bonded together, after roughening treatment, the microbial fertilizer is added for adhesion, uniform stirring is performed,
secretion of microorganisms can dissolve
phosphate in the soil to release
phosphorus and release
potassium and microelement cations, the
aggregate structure is restored in the form of a bond bridge, so that the chemical fertilizer eliminates soil hardening, and can improve the
saline-alkali performance of the soil to prevent the soil from being hardened while providing fertilizer efficiency.