Synergistic compound fertilizer added with seaweed extract and production method of synergistic compound fertilizer

Abstract

The production method comprises the following steps: soaking and washing seaweed with clear water, drying, grinding into powder, uniformly stirring to obtain seaweed powder, adding purified water into the seaweed powder, fully dissolving, uniformly stirring to obtain seaweed slurry, stirring and extracting the seaweed slurry to obtain an extracted mixture, and drying to obtain the synergistic compound fertilizer added with the seaweed extract. Carrying out centrifugal filtration on the extracted mixture to obtain a seaweed solid substance and an extracting solution, carrying out reduced pressure distillation on the extracting solution to remove liquid to obtain extracted seaweed, adding mixed enzyme I for enzymolysis to obtain an enzymolysis product and a primary fermentation product, extracting the primary fermentation product to obtain an extracted mixture, and carrying out centrifugal filtration on the extracted mixture to obtain a primary fermentation extracting solution; adding the seaweed extract into the modified humic acid, stirring and drying to obtain a soil improvement seaweed extract, adding the soil improvement seaweed extract into a chemical fertilizer, stirring completely, filtering to remove impurities, drying and granulating to obtain the seaweed compound fertilizer.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of seaweed fertilizer, in particular to a seaweed extract additive synergistic compound fertilizer and a production method thereof. BACKGROUND

[0002] China feeds nearly 20% of the world's population with less than 9% of the world's arable land, with an average of only 1.36 mu per capita (less than 40% of the world average), and more than 70% of the low-yield land. In order to ensure food security, agricultural production has long relied on chemical fertilizers to increase production, with annual chemical fertilizer application exceeding 50 million tons, and unit area application reaching 3.6 times the world average, ranking first in the world, but the utilization rate is less than 40%, and more than 80% of the field crops (rice, wheat, corn) are concentrated in nitrogen, phosphorus and potassium fertilizers, and the lack of trace elements leads to more than 40% of the soil compaction rate, and the acidification area reaches 230 million mu, and the residual fertilizer causes water eutrophication, and the green algae in Taihu Lake and Dianchi Lake and other water bodies have exploded, and the nitrate in groundwater has exceeded the standard, threatening drinking water safety.

[0003] About 70% of the earth's surface is occupied by the ocean, and this vast "blue territory" contains rich biological and mineral resources, but its development and utilization is still in the primary stage. As a representative of marine cryptophyte, seaweed has attracted attention with its huge biomass (global annual output exceeds 10 million tons) and multiple application values - from food additives, skin care essences to medical dressings, biological fertilizers, its industrial chain covers a wide range of fields. Experiments have shown that seaweed fertilizer prepared from seaweed as raw material can increase the utilization rate of nitrogen, phosphorus and potassium by crops by 15%-25%, and at the same time, through the enhancement of soil aggregate structure (porosity increased by 30%+), the trend of compaction and acidification is reversed. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a seaweed extract additive synergistic compound fertilizer and a production method thereof.

[0005] In order to solve the above technical problems, the present application provides the following technical solutions: The present application provides a seaweed extract additive synergistic compound fertilizer and a production method thereof, the method comprising: (1) Soak and wash the seaweed with clean water, dry, grind into powder, and stir evenly to obtain seaweed powder; (2) Add purified water to the seaweed powder, dissolve thoroughly, and stir evenly to obtain seaweed slurry; (3) Stir and extract the seaweed slurry obtained in step (2) into ethanol solution to obtain a mixture after extraction, centrifuge and filter the mixture after extraction to obtain seaweed solid material and extract liquid, and remove the liquid from the extract liquid by distillation under reduced pressure to obtain seaweed after extraction; (4) adding the seaweed obtained in step (3) into a fermentation tank, and adding mixed enzyme I to obtain an enzymolysis product by enzymolysis, controlling the temperature to be 20-30°C, and controlling the incubation time to be 20-25 h to perform primary fermentation, and obtaining a primary fermentation product; (5) extracting the primary fermentation product obtained in step (4) to obtain an extracted mixture, and centrifuging and filtering the extracted mixture to obtain a primary fermentation extract; (6) adding mixed enzyme II into the primary fermentation extract obtained in step (5) to continue enzymolysis for 5-20 h to obtain an enzymolysis liquid, and centrifuging the enzymolysis liquid to obtain a seaweed extract.

[0006] (7) adding modified humic acid 70-75%, water retaining agent 0.4-0.8%, zeolite 20-25%, and black vitriol 2-6% into the seaweed extract obtained in step (6), and stirring and drying to obtain a soil improvement seaweed extract; (8) adding chemical fertilizer into the soil improvement seaweed extract obtained in step (7), stirring completely, filtering to remove impurities, drying and granulating to obtain a seaweed compound fertilizer.

[0007] As a preferred technical scheme of the present application, in step (1), the seaweed includes one or three of Sargassum, Sargassum thunbergii and Gelidium amansii.

[0008] As a preferred technical scheme of the present application, in step (2), the mass ratio of seaweed powder to water is 1: (9-14).

[0009] As a preferred technical scheme of the present application, in step (3), the mass concentration of the ethanol solution is 35%, the mass ratio of seaweed to the ethanol solution is 1:12, the extraction temperature is 40-50°C, and the extraction time is 1-3 h.

[0010] As a preferred technical scheme of the present application, in step (4), the mixed enzyme I includes alginate lyase, cellulase, pectinase and bromelain.

[0011] As a preferred technical scheme of the present application, in step (5), the centrifugal speed in step (5) is 3500 r / min, and the centrifugal time is 30 min.

[0012] As a preferred technical scheme of the present application, in step (6), the mixed enzyme II includes cellulase, pectinase, papain and alginate lyase, and the mass ratio of enzyme to the primary fermentation extract is 6%-8% of cellulase, 3%-5% of pectinase, 3%-5% of papain, and 2%-4% of alginate lyase.

[0013] As a preferred technical solution of the present application, in the step (7), the modified humic acid is at least one of ammoniated humic acid, humic acid potassium and humic acid sodium.

[0014] As a preferred technical solution of the present application, in the step (8), the mass ratio of the soil improvement seaweed extract to the chemical fertilizer is (40-80):(20-60), and the chemical fertilizer includes one or more of urea, ammonium nitrate, ammonium phosphate, potassium dihydrogen phosphate, potassium sulfate and potassium chloride.

[0015] The present application provides a kind of seaweed extract synergistic compound fertilizer added, which is made from the above technical solution.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1. The seaweed extract added in the compound fertilizer can significantly improve the fertilizer efficiency, and its core advantages include nutrient synergism, soil improvement, crop stress resistance enhancement and quality improvement, etc. The seaweed acid adsorbs nitrogen by forming a network structure and inhibits ammonia volatilization. Experiments show that the urea added with seaweed extract can reduce ammonia volatilization by 40.1%-43%, the nitrogen fertilizer in wheat-corn rotation field is reduced by 39%, the nitrogen utilization rate is increased by 11.8%-17.9%, the seaweed polysaccharide chelates calcium and iron ions in the soil, reduces phosphorus fixation, and the phosphorus fertilizer utilization rate is increased from 10%-18.9% to 21.6%-31.1%, the potassium ion is wrapped by the seaweed acid, the slow-release property is enhanced, the sand loss is reduced, the seaweed extract provides carbon source for beneficial bacteria (such as nitrogen-fixing bacteria and phosphorus-solubilizing bacteria), and the microbial activity is increased by 3-5 times, and the organic matter circulation is accelerated; 2. The modified humic acid is a kind of high-performance material obtained by optimizing the structure and strengthening the function of natural humic acid through physical, chemical or biological means: promotes the formation of stable granular structure of soil particles, increases the porosity by 30%+, enhances the air permeability, effectively reverses the soil degradation, quickly neutralizes the extreme pH value of saline-alkali land and acidified soil (such as the significant reduction of pH in Xinjiang saline-alkali land), restores the soil health environment, chelates and solidifies heavy metals such as lead and cadmium, reduces the biological availability (such as reducing the content of available heavy metals), as a "energy package" of microorganisms, provides carbon source for nitrogen-fixing bacteria and phosphorus-solubilizing bacteria, and the activity is increased by 3-5 times, and the organic matter circulation is accelerated. Combined with nitrogen fertilizer: forms a humic acid-urea complex to inhibit ammonia volatilization, combined with potassium fertilizer: adsorbs potassium ions to reduce sand loss / clay fixation, combined with phosphorus fertilizer: competes for soil adsorption sites to reduce Ca-P precipitation, BRIEF DESCRIPTION OF DRAWINGS The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation of the present application. In the drawings: Figure 1 is a schematic diagram of the manufacturing process of the present application; DETAILED DESCRIPTION The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, in which it is understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0017] Wherein the same reference numerals in the drawings refer to the same components throughout.

[0018] As shown in Figure 1 The present application provides a method for producing a compound fertilizer with enhanced effect by adding seaweed extract, which comprises the following steps: (1) soaking and washing Sargassum with clean water, drying, grinding into powder, and stirring uniformly to obtain seaweed powder; (2) adding purified water to the seaweed powder, fully dissolving, and stirring uniformly to obtain seaweed slurry; (3) adding the seaweed slurry obtained in step (2) into an ethanol solution for stirring and extraction to obtain a mixture after extraction, and centrifuging and filtering the mixture after extraction to obtain seaweed solid material and extract liquid, and removing the liquid from the extract liquid by distillation under reduced pressure to obtain seaweed after extraction; (4) adding the seaweed obtained in step (3) into a fermentation tank, adding mixed enzyme I for enzymolysis to obtain an enzymolysis product, controlling the temperature to be 20-30℃, and incubating for 20-25h to perform primary fermentation to obtain a primary fermentation product; (5) extracting the primary fermentation product obtained in step (4) to obtain a mixture after extraction, and centrifuging and filtering the mixture after extraction to obtain primary fermentation extract liquid;

[0019] (6) adding mixed enzyme II to the primary fermentation extract liquid obtained in step (5) for secondary enzymolysis for 5-20h to obtain enzymolysis liquid, and centrifuging the enzymolysis liquid to obtain seaweed extract liquid; (7) adding 70-75% modified humic acid, 0.4-0.8% water-retaining agent, 20-25% zeolite, and 2-6% black vitriol to the seaweed extract liquid obtained in step (6), and stirring and drying to obtain soil-improving seaweed extract; (8) adding chemical fertilizer to the soil-improving seaweed extract obtained in step (7), stirring completely, filtering to remove impurities, drying and granulating to obtain seaweed compound fertilizer.

[0020] Example 1 The method for producing a compound fertilizer with enhanced effect by adding seaweed extract comprises the following steps: (1) soaking and washing Sargassum with clean water, drying, grinding into powder, and stirring uniformly to obtain seaweed powder; (2) adding 1:9 purified water to the seaweed powder, fully dissolving, and stirring uniformly to obtain seaweed slurry; (3) the seaweed slurry obtained in step (2) is stirred and extracted in an ethanol solution, the extraction temperature is 40°C, to obtain an extracted mixture, the extracted mixture is centrifuged and filtered to obtain seaweed solid material and an extract, the extract is distilled under reduced pressure to remove liquid, and the extracted seaweed is obtained; (4) the seaweed obtained in step (3) is added into a fermentation tank, seaweed acid-lytic enzyme and cellulase are added, and enzymolysis is performed to obtain an enzymolysis product, the temperature is controlled to be 20-30°C, the incubation time is 20-25 h, primary fermentation is performed, and a primary fermentation product is obtained; (5) the primary fermentation product obtained in step (4) is extracted to obtain an extracted mixture, and the extracted mixture is centrifuged and filtered to obtain a primary fermentation extract; (6) the primary fermentation extract obtained in step (5) is added into mixed enzymes for secondary enzymolysis for 5-20 h, to obtain an enzymolysis liquid; and the enzymolysis liquid is centrifuged, and a seaweed extract is obtained.

[0021] (7) the seaweed extract obtained in step (6) is added with 70-75% ammoniated humic acid, 0.4-0.8% water-retaining agent, 20-25% zeolite, and 2-6% black vitriol, and is stirred and dried to obtain a soil-improving seaweed extract; (8) the soil-improving seaweed extract obtained in step (7) is added with chemical fertilizer, stirred until completely, filtered to remove impurities, dried and granulated, and a seaweed compound fertilizer is obtained.

[0022] Example 2 The production method of the seaweed extract additive synergistic compound fertilizer in the example comprises the following steps: (1) Sargassum thunbergii seaweed is soaked and washed with clean water, dried, ground into powder, and stirred uniformly to obtain seaweed powder; (2) 1:10 purified water is added to the seaweed powder, fully dissolved, and stirred uniformly to obtain a seaweed slurry; (3) the seaweed slurry obtained in step (2) is stirred and extracted in an ethanol solution, the extraction temperature is 45°C, to obtain an extracted mixture, the extracted mixture is centrifuged and filtered to obtain seaweed solid material and an extract, the extract is distilled under reduced pressure to remove liquid, and the extracted seaweed is obtained; (4) the seaweed obtained in step (3) is added into a fermentation tank, cellulase and pectinase are added, and enzymolysis is performed to obtain an enzymolysis product, the temperature is controlled to be 20-30°C, the incubation time is 20-25 h, primary fermentation is performed, and a primary fermentation product is obtained; (5) the primary fermentation product obtained in step (4) is extracted to obtain an extracted mixture, and the extracted mixture is centrifuged and filtered to obtain a primary fermentation extract; (6) the primary fermentation extract obtained in step (5) is added into mixed enzymes for secondary enzymolysis for 5-20 h, to obtain an enzymolysis liquid; and the enzymolysis liquid is centrifuged, and a seaweed extract is obtained.

[0023] (7) to step (6) obtained seaweed extract liquid humic acid sodium 70-75%, water retaining agent 0.4-0.8%, zeolite 20-25%, black ash 2-6%, and stirring drying to obtain soil improvement seaweed extract; (8) to step (7) obtained soil improvement seaweed extract added chemical fertilizer, stirring completely, filtering out impurities, drying granulation, to obtain seaweed compound fertilizer.

[0024] Example 3 The embodiment of one kind adds seaweed extract synergistic compound fertilizer production method includes: (1) the Gelidium seaweed is soaked with clean water, washed, dried, ground into powder, stirred uniformly, and the seaweed powder is obtained; (2) 1:14 purified water is added to the seaweed powder, fully dissolved, stirred uniformly, and the seaweed slurry is obtained; (3) the seaweed slurry obtained in step (2) is put into ethanol solution and stirred to extract, the extraction temperature is 50 DEG C, the mixture after extraction is obtained, the mixture after extraction is centrifuged and filtered to obtain seaweed solid material and extract, the extract is distilled under reduced pressure to remove liquid, and the seaweed after extraction is obtained; (4) the seaweed obtained in step (3) is put into a fermentation tank, mixed enzyme one is put in to hydrolyze to obtain a hydrolysis product, the temperature is controlled to be 20-30 DEG C, the incubation time is 20-25 h, primary fermentation is carried out, and the primary fermentation product is obtained; (5) the primary fermentation product obtained in step (4) is extracted to obtain a mixture after extraction, and the mixture after extraction is centrifuged and filtered to obtain a primary fermentation extract; (6) the primary fermentation extract obtained in step (5) is put into mixed enzyme two to continue enzymolysis for 5-20 h, and the enzymolysis liquid is obtained; the enzymolysis liquid is centrifuged, and the seaweed extract is taken.

[0025] (7) to step (6) obtained seaweed extract liquid humic acid sodium 70-75%, water retaining agent 0.4-0.8%, zeolite 20-25%, black ash 2-6%, and stirring drying to obtain soil improvement seaweed extract; (8) to step (7) obtained soil improvement seaweed extract added chemical fertilizer, stirring completely, filtering out impurities, drying granulation, to obtain seaweed compound fertilizer.

[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solution recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for producing a synergistic compound fertilizer by adding seaweed extract, characterized in that: The method comprises: (1) Soak the seaweed in clean water, wash it, dry it, grind it into powder, and stir it evenly to obtain seaweed powder; (2) Add purified water to the seaweed powder, fully dissolve it, and stir it evenly to obtain seaweed slurry; (3) adding an ethanol solution to the seaweed slurry obtained in step (2) and stirring and extracting it to obtain an extracted mixture, centrifuging the extracted mixture to obtain seaweed solid matter and an extract, and distilling the extract under reduced pressure to remove liquid to obtain extracted seaweed; (4) Adding the seaweed obtained in step (3) into a fermentation tank, adding a mixed enzyme to perform enzymolysis to obtain an enzymatic hydrolysis product, controlling the temperature to 20-30°C, and keeping the temperature for 20-25 hours to perform primary fermentation to obtain a primary fermentation product; (5) extracting the primary fermentation product obtained in step (4) to obtain an extracted mixture, and centrifugally filtering the extracted mixture to obtain a primary fermentation extract; (6) Adding the mixed enzyme II to the primary fermentation extract obtained in step (5) and continuing the enzymatic hydrolysis for 5-20 hours to obtain an enzymatic hydrolysis liquid; centrifuging the enzymatic hydrolysis liquid to obtain a seaweed extract. (7) adding 70-75% of modified humic acid, 0.4-0.8% of water retaining agent, 20-25% of zeolite, and 2-6% of black alum to the seaweed extract obtained in step (6), stirring and drying the mixture to obtain a soil-improving seaweed extract; (8) Add chemical fertilizer to the soil-improving seaweed extract obtained in step (7), stir thoroughly, filter to remove impurities, dry and granulate to obtain seaweed compound fertilizer.

2. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In the step (1), the seaweed includes one or three of Sargassum, Hijiki and Gelidium.

3. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In the step (2), the mass ratio of seaweed powder to water is 1:(9-14).

4. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In the step (3), the mass concentration of the ethanol solution is 35%, the mass ratio of seaweed to ethanol solution is 1:12, the extraction temperature is 40-50°C, and the extraction time is 1-3h.

5. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In the step (4), the enzyme mixture includes alginate lyase, cellulase, pectinase and bromelain.

6. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, characterized in that: In step (5), the centrifugal speed is 3500 r / min and the centrifugal time is 30 min.

7. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In step (6), the second mixed enzyme comprises cellulase, pectinase, papain and alginate lyase, and the amount thereof in the enzyme / primary fermentation extract mass ratio is 6%-8% of cellulase, 3%-5% of pectinase, 3%-5% of papain and 2%-4% of alginate lyase.

8. The method for producing a synergistic compound fertilizer with seaweed extract according to claim 1, characterized in that: In the step (7), the modified humic acid is at least one of ammoniated humic acid, potassium humate, and sodium humate.

9. The method for producing a synergistic compound fertilizer containing seaweed extract according to claim 1, wherein: In the step (8), the mass ratio of the soil-improving seaweed extract to the chemical fertilizer is (40-80): (20-60), and the chemical fertilizer includes one or more of urea, ammonium nitrate, ammonium phosphate, potassium dihydrogen phosphate, potassium sulfate and potassium chloride.

10. A synergistic compound fertilizer with seaweed extract added, characterized in that: Made by the method according to claims 1-9.

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