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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

Active Publication Date: 2011-10-12
BEIJING LEILI MARINE BIOINDUSTRY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country has successively developed a series of new slow-release fertilizer products: such as mineral coated fertilizer, long-acting ammonium bicarbonate containing DCD, coated urea, wrapped compound fertilizer Luxecote, adhesive fertilizer, hydrophilic polymer fertilizer And waste plastic film-coated fertilizer etc., wherein the method that uses hydrophilic polymer as water, fertilizer carrier has caused great concern in the world, but above slow-release fertilizer still has many deficiencies: production cost is too high, Complex process, unstable slow and controlled release performance or slow and controlled release materials are difficult to biodegrade in soil, which limits the popularization and application of slow and controlled release fertilizers

Method used

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  • Algae sustained-release granular fertilizer, preparation method and application thereof
  • Algae sustained-release granular fertilizer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides an algae sustained-release granular fertilizer. The algae sustained-release granular fertilizer comprises the following four layers of components from inside to outside: 1) a core layer; 2) a urea resin layer; 3) a humic acid layer; and 4) a calcium alginate and alginate glue layer. Moreover, the invention also provides a preparation method and application of the algae sustained-release granular fertilizer.

Description

technical field [0001] The invention belongs to the field of compound fertilizers. Specifically, the present invention relates to a seaweed slow-release granular fertilizer with slow-controlled release effect, its preparation method and application. Background technique [0002] In recent years, my country has successively developed a series of new slow-release fertilizer products: such as mineral coated fertilizer, long-acting ammonium bicarbonate containing DCD, coated urea, wrapped compound fertilizer Luxecote, adhesive fertilizer, hydrophilic polymer fertilizer And waste plastic film-coated fertilizer etc., wherein the method that uses hydrophilic polymer as water, fertilizer carrier has caused great concern in the world, but above slow-release fertilizer still has many deficiencies: production cost is too high, The complex process, unstable slow and controlled release performance or slow and controlled release materials are difficult to biodegrade in soil, which limits t...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
Inventor 汤洁严国富
Owner BEIJING LEILI MARINE BIOINDUSTRY INC
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