Special controlled-release fertilizer for fast-growing eucalyptus and preparation method thereof
A technology of fast-growing eucalyptus and controlled-release fertilizer, which is applied in the direction of application, fertilization equipment, fertilizer mixture, etc., can solve the problems of polyethylene plastic white pollution, inability to effectively release fertilizer, and difficulty in degrading, so as to achieve improved utilization effect and good controlled release Effect, fertility lasting effect
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 The special controlled-release fertilizer for fast-growing eucalyptus of the present invention comprises an outer coating layer and an inner layer fertilizer granule composed of rumen-passing fat, and its preparation method comprises the following steps:
 (1) Preparation of fertilizer granules: First, weigh urea, monoammonium phosphate, potassium chloride, calcium magnesium phosphorus powder, borax, copper sulfate, zinc sulfate, sodium nitrophenolate, Polyglutamic acid, humic acid, binder (over 80-100 mesh kaolin), and mix them uniformly with each other; then, grind the well-mixed powder, granulate, dry, and sieve; Control the moisture content of the fast-growing eucalyptus special compound fertilizer after drying and sieving to 4-8%, and the particle size is 1-4.75mm.
 (2) Melt rumen fat.
 (3) Spray the melted rumen fat onto the fertilizer granules.
 The method for preparing fast-growing eucalyptus special-purpose compound fertiliz...
 200 parts of urea, 70 parts of monoammonium phosphate, 150 parts of potassium chloride, 80 parts of calcium magnesium phosphorus powder, 12 parts of borax, 6 parts of copper sulfate, 6 parts of zinc sulfate, 4 parts of sodium nitrophenolate, and 4 parts of polyglutamic acid , 10 parts of humic acid, 60 parts of kaolin; the weight ratio of coating layer and fertilizer granules is 1:3.
 280 parts of urea, 50 parts of monoammonium phosphate, 110 parts of potassium chloride, 50 parts of calcium magnesium phosphorus powder, 4 parts of borax, 12 parts of copper sulfate, 10 parts of zinc sulfate, 2 parts of sodium nitrophenolate, 6 parts of polyglutamic acid 18 parts, 18 parts of humic acid, 100 parts of kaolin; the weight ratio of coating layer and fertilizer granules is 1:2.5.
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