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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  • 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 poly...

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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