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Method for preparing biological compound fertilizer

A technology of biological compound fertilizer and fertilizer, applied in the field of preparation of biological compound fertilizer, can solve many problems such as low price, good water retention, and obvious effects of drought resistance

Inactive Publication Date: 2012-11-14
SICHUAN NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are not many researches on the development and research of functional fertilizers at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] (1), the preparation of organic binder:

[0036] ①Add 600mL of hot water at about 45°C to a 2L beaker, pour 100g of starch into the reactor, and stir to form a uniform slurry (the whole process is carried out in a constant temperature water bath);

[0037] ②While stirring, slowly add 2ml of hydrogen peroxide that has been measured, and later add 5ml of sodium hydroxide solution with a concentration of 10% by mass, mix well and add 10ml of ferrous sulfate solution with a concentration of 5% by mass, and keep it warm for 60 minutes (if bubbles are produced during the reaction, add an appropriate amount of ethanol to eliminate the foam produced during the reaction);

[0038] ③Raise the temperature of the mixture to about 85°C, and then add 10ml of ferrous sulfate solution with a concentration of 10% by mass percentage under stirring; then add 4ml of sodium hydroxide solution with a concentration of 10% by mass percentage; mix well and keep warm React for 20-30 minutes;

...

Embodiment 1

[0045] Present embodiment biological compound fertilizer is prepared by following method:

[0046] 51.45g of vermicompost, 4.00g of humic acid, 12.60g of heavy calcium, 14.05g of urea, 12.40g of potassium chloride, 0.20g of boric acid, 0.10g of zinc sulfate, containing the microbial flora of phosphorus-dissolving and potassium-dissolving bacteria (200g / t ) and 1.20g of organic binder are mixed and then put into a granulator to granulate to obtain a round fertilizer core with a particle diameter of 3mm. Then the fertilizer core is spray coated on the fluidized bed with the above-mentioned coating agent, and the coating agent consumption accounts for 4% of the total mass of the fertilizer after coating (the quality of the fertilizer core: the quality of the coating agent=24: 1), that is, the The biological compound fertilizer is obtained, and the biological compound fertilizer is especially suitable for rice cultivation.

Embodiment 2

[0048] Present embodiment biological compound fertilizer is prepared by following method:

[0049] 60.00g of vermicompost, 3.00g of humic acid, 4.40g of monoammonium phosphate, 20.10g of urea, 9.00g of potassium chloride, 0.20g of boric acid, 0.10g of zinc sulfate, 0.20g of magnesium sulfate, microorganisms containing phosphorus-dissolving and potassium-dissolving bacteria Bacteria (300g / t) and 1.00g of organic binder are mixed and put into a granulator to granulate to obtain a round fertilizer core with a particle size of 3mm. Then the fertilizer core is spray-coated on a fluidized bed with the above-mentioned coating agent, and the coating agent consumption accounts for 2% of the total mass of the fertilizer after coating (the quality of the fertilizer core: the quality of the coating agent=49: 1), that is, the The biological compound fertilizer is obtained, and the biological compound fertilizer is especially suitable for wheat planting.

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Abstract

The invention discloses a method for preparing biological compound fertilizer, which comprises steps of preparing an organic adhesive, preparing fertilizer core, preparing a coating agent, coating and the like. In the method, earthworm manure and humic acid are used as organic components, a NPK medical fertilizer is used as an inorganic component, rich microbes and enzymes in the earthworm manureand added released phosphorus and potassium are used as a microbial component, modified starch is used an organic adhesive for granulating the fertilizer, and natural cellulose such as grain bran is used as a modified polymer water absorbing agent for making a coating material. The prepared fertilizer integrates inorganic and organic components and microbes, and is a biological compound fertilizer with multiple functions of water retaining, sustained release, stress resistance and absorption promotion.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a preparation method of biological compound fertilizer. Background technique [0002] Due to the shortcomings of chemical fertilizers and improper use methods, the utilization rate of chemical fertilizers is low and agricultural non-point source pollution is becoming more and more serious. At present, researches on various new fertilizers to improve nutrient utilization efficiency are actively carried out at home and abroad. According to different nutrients and functions, they can be divided into four categories in general: slow / controlled release fertilizers, biological fertilizers, organic compound fertilizers and functional fertilizers. [0003] New slow / controlled release fertilizers have been the most active research direction in the past 40 years. Coated slow / controlled release fertilizers, synthetic slightly soluble slow release fertilizers, chemically inhibited slow ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G5/00C05G3/08C05G3/90
Inventor 赵仕林廖洋严小娟夏绪祥赵婷兰婷杜强
Owner SICHUAN NORMAL UNIV
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