Special cotton fertilizer produced by using biochemical fulvic acid through melt granulation and production method of special fertilizer

The invention discloses special cotton fertilizer produced by using biochemical fulvic acid through melt granulation, relating to the technical field of special fertilizer of crop formula. The special fertilizer is obtained by taking 450-650 parts of nitramine phosphorus, 50-160 parts of potassium chloride, 80-300 parts of potassium sulfate, 50-150 parts of monoammonium phosphate, 1-100 parts of biochemical fulvic acid, 1-15 parts of EDTA (Ethylene Diamine Tetraacetic Acid) chelating zinc, 1-15 parts of EDTA chelating manganese, 1-20 parts of EDTA chelating iron, 1-20 parts of borax and 0.1-0.5 part of ammonium heptamolybdate as raw materials, mixing, stirring, heating, granulating, cooling and screening. The special fertilizer disclosed by the invention has the advantages of comprehensive nutrients, favorable water solubility, greenness, no pollution, high utilization rate, improvement on soil, increase of crop yield and improvement on quality.