Multifunctional selenium-enriched controlled-release special fertilizer for rice
A multi-functional, special-purpose fertilizer technology, applied in the direction of application, fertilization equipment, fertilizer mixture, etc., can solve the problems of field runoff water and soil pollution, large residual amount of inorganic selenium, polluted soil and water sources, etc., and achieve a significant effect of increasing production and improving Reasonable effect of fertilizer utilization rate and nutrient distribution ratio
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Embodiment 1
[0039] Prepare multifunctional selenium-enriched slow-release rice special fertilizer, the total nutrient content is 44%, nitrogen, phosphorus and potassium (N-P 2 o 5 -K 2 O) content is 21%, 13%, 10%, selenium content ≥ 0.2%, zinc content ≥ 0.2%, silicon content ≥ 0.2%, in addition to other medium and trace elements needed for crop growth.
[0040] The raw material components are as follows in mass percent: 138 parts of 3% chitosan-coated compound fertilizer, 340 parts of 4% chitosan-coated compound fertilizer, 200 parts of 5% chitosan-coated compound fertilizer, sulfur water-soluble polymer 80 parts of double-coated urea, 74 parts of potassium chloride, 90 parts of monoammonium phosphate, 50 parts of sodium selenite, 8 parts of EDTA chelated zinc, 15 parts of calcium magnesium phosphate fertilizer, and 5 parts of borax;
[0041] Put the above-mentioned raw materials into a blender and stir for 5-10 minutes, fully mix, then measure and pack to obtain the finished product. ...
Embodiment 2
[0043] Prepare multifunctional selenium-enriched slow-release rice special fertilizer, the total nutrient content is 44%, nitrogen, phosphorus and potassium (N-P 2 o 5 -K 2 O) content is 21%, 14%, 9%, selenium content ≥ 0.2%, zinc content ≥ 0.2%, in addition to other trace elements needed for crop growth.
[0044] The raw material components are as follows in mass percent: 90 parts of 3% chitosan-coated compound fertilizer, 280 parts of 4% chitosan-coated compound fertilizer, 220 parts of 5% chitosan-coated compound fertilizer, sulfur water-soluble polymer 130 parts of double-coated urea, 80 parts of potassium chloride, 120 parts of monoammonium phosphate, 45 parts of sodium selenite, 15 parts of EDTA chelated zinc, 10 parts of calcium magnesium phosphate fertilizer, and 10 parts of borax;
[0045] Put the above-mentioned raw materials into a blender and stir for 5-10 minutes, fully mix, then measure and pack to obtain the finished product.
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