Algae sustained-release granular fertilizer, preparation method and application thereof
A slow-release granular fertilizer and seaweed technology, applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of unstable slow-release performance, high production cost, complex process, etc., to reduce nutrient loss and improve nutrient utilization efficiency, and the effect of reducing agricultural costs
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Embodiment 1
[0043] Raw material name Weight percentage (%) Raw material name Weight percentage (%)
[0044] Calcium alginate Alginate gel 20 Urea-formaldehyde resin 20
[0045] Monoammonium Phosphate 10 Humic Acid 18
[0046] Urea 15 Potassium sulfate 15
[0047] Ferrous sulfate heptahydrate 2
[0048] The raw material calcium alginate alginate gel is prepared by the following steps:
[0049] 1) Grinding the seaweed raw material to 2×2cm;
[0050] 2) Add 10 kilograms of sodium carbonate to 990 kilograms of water, so that the concentration of sodium carbonate reaches 0.0943mol / L;
[0051] 3) Add step 2) to 1000 kilograms of sodium carbonate solution obtained in step 1) to form a mixture in 180 kilograms of seaweed obtained;
[0052]4) Degrade the mixture obtained in step 3) for 4 hours at 85°C under stirring, cool to normal temperature, and centrifuge to obtain 800 kg of supernatant;
[0053] 5) Add 4 kg of calcium chloride to the supernatant in step 4) to prepare calcium alginate al...
Embodiment 2
[0062] Raw material name Weight percentage (%) Raw material name Weight percentage (%)
[0063] Calcium Alginate Alginate Gum 15 Urea Formaldehyde Resin 15
[0064] Monoammonium Phosphate 15 Humic Acid 20
[0065] Urea 18 Potassium sulfate 16
[0066] Zinc sulfate heptahydrate 1
[0067] The raw material calcium alginate alginate gel is prepared by the following steps:
[0068] 1) Grinding the seaweed raw material to 3×3cm;
[0069] 2) Add 20 kilograms of sodium carbonate to 980 kilograms of water, so that the concentration of sodium carbonate reaches 0.1887mol / L;
[0070] 3) Add 200 kilograms of seaweeds obtained in step 1) to 1000 kilograms of sodium carbonate solution obtained in step 2) to form a mixture;
[0071] 4) Under stirring at 85°C, degrade the mixture obtained in step 3) for 4 hours, cool to normal temperature, and centrifuge to obtain 850 kg of supernatant;
[0072] 5) Add 6 kg of calcium chloride to the supernatant in step 4) to prepare calcium alginate al...
Embodiment 3
[0081] Raw material name Weight percentage (%) Raw material name Weight percentage (%)
[0082] Calcium alginate Alginate gel 10 Urea-formaldehyde resin 18
[0083] Monoammonium Phosphate 13 Humic Acid 20
[0084] Urea 18 Potassium sulfate 20
[0085] Manganese sulfate monohydrate 1
[0086] The raw material calcium alginate alginate gel is prepared by the following steps:
[0087] 1) Grinding the seaweed raw material to 4×4cm;
[0088] 2) Add 15 kilograms of sodium carbonate to 985 kilograms of water, so that the concentration of sodium carbonate reaches 0.1415mol / L;
[0089] 3) Add 150 kilograms of seaweeds obtained in step 1) to 1000 kilograms of sodium carbonate solution obtained in step 2) to form a mixture;
[0090] 4) Under stirring at 85°C, degrade the mixture obtained in step 3) for 4 hours, cool to normal temperature, and centrifuge to obtain 850 kg of supernatant;
[0091] 5) Add 5 kg of calcium chloride to the supernatant of step 4) to prepare calcium alginat...
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