Tower-type melt granulation water-soluble fertilizer containing fulvic acid potassium macroelement and preparation method for fertilizer

The invention discloses a tower-type melt granulation water-soluble fertilizer containing fulvic acid potassium macroelement and belongs to the technical field of water-soluble fertilizers. The water-soluble fertilizer is prepared from the following raw materials in parts by weight: 490-510 parts of ammonium nitrate-phosphorus, 170 parts of nitrate potassium, 299-304 parts of monopotassium phosphate, 6 parts of boric acid, 3.3 parts of EDTA (ethylene diamine tetraacetic acid) zinc, 7.7 parts of EDTA ferrum, 4 parts of EDTA manganese and 0 to 15 parts of fulvic acid potassium. The tower-type melt granulation water-soluble fertilizer is balanced and stable in nutrition, has a smooth appearance, is difficult to harden, has a scientific and reasonable formula, is comprehensively nutritious and deserves to be popularized.