Slow-release fertilizer special for cotton and preparation method thereof
A slow-release fertilizer, cotton technology, applied in fertilizer mixture, application, fertilization device and other directions, can solve the problems of not meeting the needs of cotton growth, uneven release of fertility, etc., to reduce the incidence of seedlings, balance fertilizer efficiency, and protect the environment. Effect
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[0014] A slow-release fertilizer special for cotton, made from the following parts by weight (kg) of raw materials: urea 12, ammonium chloride 12, potassium chloride 9, monoammonium phosphate 8, copper sulfate 2, sodium selenite 2, sulfurous acid Iron 1, quicklime 2, sepiolite 6, calcium carbonate 2, neem bark powder 2, medicine residue ash 2, sodium nitrophenolate 0.01, brown sugar 3, waste engine oil 1.
[0015] The preparation method of special slow-release fertilizer for cotton includes the following steps:
[0016] (1) Dissolve brown sugar with appropriate amount of hot water, mix copper sulfate, sodium selenite, ferrous sulfate, medicine slag ashes, and sodium nitrophenolate evenly, pour brown sugar water, stir evenly, and granulate;
[0017] (2) Mix the quicklime into the waste engine oil and stir;
[0018] (3) Mix other remaining materials to be uniform;
[0019] (4). Mix the materials in steps (1), (2), (3) evenly, and then granulate.
[0020] Application method: Apply in the d...
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