Special base fertilizer for spring corn and preparation method thereof
A technology of special fertilizer and base fertilizer, applied in the field of preparation of special fertilizer for spring corn base fertilizer, can solve problems such as unsatisfactory fertilizer efficiency and lack of pertinence, and achieve the effects of excellent slow release performance, control of diseases and insect pests, and slow release.
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[0017] A preparation method of special fertilizer for spring corn base fertilizer, comprising the following steps:
[0018] (1) Mix raw materials 1kg calcium carbonate, 2kg iron ore, 1.5kg dolomite, 0.8kg potassium feldspar, 1.5kg slag, burn at 450°C for 7 hours, add 1.5% of the total weight of the above raw materials to grind with vegetable oil into powder, and after mixing with 3kg kaolin, the compound powder is ready for use;
[0019] (2) Add animal feathers to 30% sulfuric acid and hydrolyze at 100-110°C for 1-2 hours to generate amino acids, then add lime to pH 6.0-6.8 to obtain a hydrolyzate, and add 3kg carboxymethyl to every 15kg of hydrolyzate Base cellulose, then add 1kg ferrous sulfate and 3kg ammonium molybdate to dissolve, and react at 90-105°C for 5-6 hours to obtain amino acid chelating liquid for use; use 300ml of 30% sulfuric acid to hydrolyze every 100g of animal feathers .
[0020] (3) Mix 10kg of coated urea, 40kg of coated diammonium phosphate, 40kg of c...
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