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Preparation method of novel algal controlled-release fertilizer

A technology for controlled-release fertilizer and seaweed, which is applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of high cost and low content, and achieve the effects of low cost, improved water retention performance, and large breeding scale and output.

Inactive Publication Date: 2019-05-10
GUANGXI NANNING ZHICUI SCI TECH CONSULTATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the fertilizer is mainly urea, and the content of other elements is relatively low. The preparation of the superabsorbent resin requires additional reaction instruments, and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Grind the natural sun-dried kelp with deionized water at a material-to-liquid ratio of 1:0.3 to make a homogenate, and refrigerate at 5°C for later use;

[0033] (2) Weigh 50 parts of seaweed homogenate, adjust the pH to 6.0~7.0, add PPC compound enzyme in an amount of 0.4% of the mass of seaweed homogenate, and carry out enzymatic hydrolysis reaction at 35~40°C for 50 hours; Described PPC compound enzyme is the mixing of cellulase, pectin hydrolase, proteolytic enzyme, and its mass ratio is cellulase: pectin hydrolase: proteolytic enzyme=2: 1: 1;

[0034] (3) After the enzymatic hydrolysis reaction, insert the activated Bacillus subtilis, Aspergillus niger, and yeast into the enzymolysis liquid. %, 4.5%, 4%, fermented for 48 hours;

[0035] (4) After the fermentation is over, add 5 parts of distilled water, 25 parts of urea, 3 parts of sodium chloride, 18 parts of dipotassium hydrogen phosphate, 7 parts of calcium chloride, and 9 parts of plant ash into the fermen...

Embodiment 2

[0040] (1) Add deionized water to grind naturally dried macroalgae and sargassum at a material-to-liquid ratio of 1:0.3 to make a homogenate, and refrigerate at 5°C for later use;

[0041] (2) Weigh 90 parts of seaweed homogenate, adjust the pH to 6.0~7.0, add PPC compound enzyme in an amount of 0.2% of the mass of seaweed homogenate, and carry out enzymatic hydrolysis reaction at 35~40°C for 48 hours; Described PPC compound enzyme is the mixing of cellulase, pectin hydrolase, proteolytic enzyme, and its mass ratio is cellulase: pectin hydrolase: proteolytic enzyme=2: 1: 1;

[0042] (3) After the enzymatic hydrolysis reaction, insert the activated Bacillus subtilis, Aspergillus niger, and yeast into the enzymolysis liquid. %, 5%, 2%, fermented for 36 hours;

[0043] (4) After the fermentation is over, add 5 parts of distilled water, 22 parts of urea, 3 parts of sodium chloride, 16 parts of dipotassium hydrogen phosphate, 6 parts of calcium chloride, and 8 parts of plant ash int...

Embodiment 3

[0048] (1) Grind the natural sun-dried Sargassum and Kelp with deionized water at a material-to-liquid ratio of 1:0.3 to make a homogenate, and refrigerate at 5°C for later use;

[0049] (2) Weigh 70 parts of seaweed homogenate, adjust the pH to 6.0-7.0, add PPC compound enzyme, the addition amount is 0.3% of the mass of seaweed homogenate, and carry out enzymatic hydrolysis reaction at 35-40°C for 36 hours; Described PPC compound enzyme is the mixing of cellulase, pectin hydrolase, proteolytic enzyme, and its mass ratio is cellulase: pectin hydrolase: proteolytic enzyme=2: 1: 1;

[0050] (3) After the enzymatic hydrolysis reaction, insert the activated Bacillus subtilis, Aspergillus niger, and yeast into the enzymolysis liquid. %, 4%, 3%, fermented for 40 hours;

[0051] (4) After the fermentation is over, add 5 parts of distilled water, 15 parts of urea, 3 parts of sodium chloride, 20 parts of dipotassium hydrogen phosphate, 5 parts of calcium chloride, and 9.5 parts of pla...

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Abstract

The invention discloses a preparation method of a novel algal controlled-release fertilizer. The novel algal controlled-release fertilizer is prepared from algae as a main material via the steps of biological enzymatic hydrolysis, microbial fermentation, coating, spraying and powdering. The novel algal controlled-release fertilizer prepared herein has the advantages that the combination of biological enzymatic hydrolysis and microbial fermentation allows contents of algae to be released; since nitrogen, phosphorus, and potassium are added, rich and diverse nutrition is provided; the nutrientsare doubly covered in the production process by means of polylactic acid coating and microbial agent spray coating, so that the fertilizer herein has good lasting coating release control capacity andwater-holding drought-resisting capacity, and has long-lasting efficacy.

Description

technical field [0001] The invention relates to the field of slow-release and controlled-release fertilizers, in particular to a preparation method of a novel seaweed controlled-release fertilizer. Background technique [0002] Seaweed fertilizer is made of macroalgae that grows in the ocean as raw material, and the active ingredients in seaweed are extracted by chemical, physical and biological methods to make fertilizer. Seaweed fertilizer contains various trace elements, as well as unique seaweed polysaccharides, highly unsaturated fatty acids and natural plant growth regulators, such as auxins, gibberellins, cytokinins, polyphenolic compounds and antibiotics. These substances have high biological activity, can stimulate the production of non-specific active factors in plants and regulate the balance of endogenous hormones, can promote plant growth, increase yield, and improve the quality of agricultural products. [0003] Chinese patent CN201410021767.2 discloses a doub...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 张微
Owner GUANGXI NANNING ZHICUI SCI TECH CONSULTATION CO LTD
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