CN113461458A - Liquid biological film fertilizer water retaining agent - Google Patents
Liquid biological film fertilizer water retaining agent Download PDFInfo
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- CN113461458A CN113461458A CN202110899209.6A CN202110899209A CN113461458A CN 113461458 A CN113461458 A CN 113461458A CN 202110899209 A CN202110899209 A CN 202110899209A CN 113461458 A CN113461458 A CN 113461458A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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- Fertilizers (AREA)
Abstract
The invention provides a liquid biomembrane fertilizer and water retaining agent, and relates to the technical field of fertilizer retention. The liquid biomembrane fertilizer and water retaining agent comprises biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and a growth promoting, stress resisting and disease resisting functional synergistic substance, and the weight ratio of the fertilizer auxiliary agent is as follows: 60-90 wt% of biologically fermented high molecular weight polyglutamic acid and glucan, 2-20 wt% of water-soluble film forming material and film reinforcing agent and 1-20 wt% of functional synergistic substances for promoting growth, resisting stress, resisting diseases and the like. The liquid biomembrane fertilizer water retaining agent can increase both production and income, and the yield of a biomembrane retaining fertilizer treatment group can reach the equal-nutrient conventional fertilizer base dressing treatment, so that the yield can be ensured while the fertilizer is saved, and certain effects of saving fertilizer and increasing efficiency are achieved; compared with the yield and benefit of the compound fertilizer product on the market, the method has obvious advantages.
Description
Technical Field
The invention relates to the technical field of fertilizer retention, in particular to a liquid biomembrane fertilizer water retaining agent.
Background
After the fertilizer is applied to soil, the fertilizer cannot be completely absorbed and utilized by crops, and a large part of the fertilizer is converted into a form which can not be absorbed by the crops due to leaching loss, volatilization or soil fixation and other factors, so that the conventional fertilizer has low nutrient utilization rate and short fertilizer effect period and cannot meet the growth and development requirements of the crops, the current season utilization rate of the fertilizer in China is 30-35% of nitrogen fertilizer, 10-25% of phosphate fertilizer and 35-50% of potassium fertilizer, and because the fertilizer utilization rate is low, 9% of land in China consumes 32% of chemical fertilizer in the total amount of the world, the problems of serious resource consumption, low crop quality, serious environmental pollution and the like are increasingly aggravated.
Therefore, how to improve the utilization rate of the fertilizer, give full play to the function of the fertilizer, repair and improve the soil, have great significance to the sustainable development of agriculture in China, and from the characteristic of the fertilizer, add a novel fertilizer auxiliary agent, develop a novel fertilizer product, activate the fertilizer and the activity of soil nutrients, which is an inevitable trend of future fertilizer development, and from the aspect of social health development, the novel fertilizer has higher nutrient utilization rate, less environmental pollution, can better maintain ecological balance, and meets the national development strategy requirements, in particular, materials such as macromolecular polyglutamic acid, glucan and the like are specially prepared by utilizing the microbial fermentation technology, a multilayer biomembrane fertilizer nutrient space carrier is constructed, functional synergistic substances with growth promotion, stress resistance, disease resistance and the like are added into the traditional fertilizer according to a certain proportion, the traditional fertilizer can be promoted to be functionalized, and the crop yield and quality are improved, and simultaneously improves the soil performance.
In order to solve the above problems, the inventors provide a liquid biofilm manure water retention agent.
Disclosure of Invention
In order to achieve the purposes of fertilizer conservation, water conservation, root promotion, nutrient supply, stress resistance and soil improvement, the invention is realized by the following technical scheme: the liquid biomembrane fertilizer and water retaining agent comprises a fertilizer auxiliary agent, biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and synergistic substances with the functions of promoting growth, resisting stress and resisting diseases, wherein the weight ratio of the fertilizer auxiliary agent is as follows:
the content of the biological fermentation high molecular weight polyglutamic acid and glucan is 60-90 wt%;
the content of the water-soluble film forming material and the film reinforcing agent is 2 to 20 weight percent;
the content of the functional synergistic substances with growth promotion, stress resistance, disease resistance and the like is 1 to 20 percent by weight.
Preferably, the water-soluble film forming material is 0.5-5 wt% of guar gum and polyvinyl alcohol and 0.3-5 wt% of sephadex.
Preferably, the film reinforcing agent is 2-10 wt% of sodium tetraborate.
Preferably, the functional synergistic substances for promoting growth, resisting stress, resisting diseases and the like comprise 1 to 15 weight percent of alginate oligosaccharide, 0.5 to 4 weight percent of chitosan oligosaccharide and 0.2 to 1 weight percent of oligomeric acid.
The preparation method of the liquid biomembrane fertilizer and water retention agent comprises the following steps:
s1, biologically fermenting the high-molecular-weight polyglutamic acid and the glucan according to a weight ratio to obtain 800 kg of polyglutamic acid fermentation liquor, preserving heat at 60-80 ℃, and stirring;
s2, preparing 50kg of mixture with functions of growth promotion, stress resistance, disease resistance and the like by utilizing the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acids according to the weight ratio, and adding the mixture into the polyglutamic acid fermentation liquor prepared in the S1 under the condition of stirring;
s3, preparing 1-5% aqueous solution of guar gum, polyvinyl alcohol and sephadex to prepare 120kg of water-soluble film forming material, adding 30kg of sodium tetraborate into the mixed solution in S2 while stirring;
s4, stirring at 60-80 ℃ for 30-60min, cooling to room temperature, discharging, and quantitatively packaging to obtain a liquid biomembrane fertilizer and water retention agent;
s5, adding the prepared liquid biomembrane fertilizer water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%, mixing and granulating, and creating the biomembrane retention fertilizer after drying, cooling, screening and anti-caking treatment.
The invention provides a liquid biofilm fertilizer water retention agent. The method has the following beneficial effects:
1. the liquid biomembrane fertilizer and water retaining agent takes a three-dimensional network framework formed by crosslinking high-molecular polyglutamic acid and glucan prepared by a fermentation method as a framework supporting material to construct a multi-layer biomembrane fertilizer and nutrient space carrier, and the macromolecular polymer improves the water absorption and water retention capacity of crop roots while playing a fertilizer slow release role, promotes absorption of nitrogen, phosphorus and potassium and medium trace elements, improves the utilization rate of the fertilizer, and simultaneously promotes the formation of a soil aggregate structure to repair soil.
2. The liquid biomembrane fertilizer and water retaining agent is mixed with inorganic fertilizer, the macromolecular structure can play an embedding role, free carboxyl of polyglutamic acid and free hydroxyl of glucan can chelate cations such as potassium, magnesium and the like, the double effects of multilayer embedding and chelating can enable the fertilizer to achieve a slow release effect, the fertilizer can play a growth regulating role after being degraded into oligopeptide and oligosaccharide, rooting and root strengthening are promoted, the root system is developed, plants are robust, and after being degraded into monomer glutamic acid molecules and monosaccharide, crop and microorganism nutrition is supplied, and the root system and the micro-ecological environment are improved.
3. The liquid biomembrane fertilizer and water retaining agent can improve the effect of the hydrogel biomembrane, improve the functions of water retention and fertilizer retention, reduce nutrient loss, prolong the fertilizer efficiency, improve the utilization rate of fertilizer nutrients, root taking and growth promotion and improve the nutrient absorption efficiency of crops by adding water-soluble film forming materials, film reinforcing agents and functional synergistic substances for promoting growth, resisting stress, resisting diseases and the like; improving the immune function of the plant and increasing the photosynthesis efficiency of the plant.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples of the liquid biofilm manure water retention agent are as follows:
the first embodiment is as follows:
the liquid biomembrane fertilizer and water retaining agent comprises a fertilizer auxiliary agent, biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and synergistic substances with the functions of promoting growth, resisting stress and resisting diseases, wherein the weight ratio of the fertilizer auxiliary agent is as follows:
the content of biologically fermented high molecular weight polyglutamic acid and glucan is 90 wt%;
the content of the water-soluble film forming material and the film reinforcing agent is 2 wt%;
the content of functional synergistic substances with growth promotion, stress resistance, disease resistance and the like is 1 wt%;
wherein the water-soluble film forming material comprises 0.5 wt% of guar gum and polyvinyl alcohol and 0.3 wt% of sephadex.
Wherein the film enhancer is sodium tetraborate 2 wt%.
Wherein, the functional synergistic substances for promoting growth, resisting stress, resisting disease and the like comprise 3 wt% of alginate oligosaccharides, 0.5 wt% of chitosan oligosaccharides and 0.7 wt% of oligomeric acid.
The preparation method of the liquid biomembrane fertilizer and water retention agent comprises the following steps:
s1, biologically fermenting the high-molecular-weight polyglutamic acid and the glucan according to a weight ratio to obtain 800 kg of polyglutamic acid fermentation liquor, preserving heat at 60 ℃, and stirring;
s2, preparing 50kg of mixture with functions of growth promotion, stress resistance, disease resistance and the like by utilizing the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acids according to the weight ratio, and adding the mixture into the polyglutamic acid fermentation liquor prepared in the S1 under the condition of stirring;
s3, preparing 1% aqueous solution of guar gum, polyvinyl alcohol and sephadex to prepare 120kg of water-soluble film forming material, adding 30kg of sodium tetraborate into the mixed solution in S2 while stirring;
s4, stirring for 30min at 60-80 ℃, cooling to room temperature, discharging, quantitatively packaging, and preparing a liquid biomembrane fertilizer water retaining agent;
s5, adding the prepared liquid biomembrane fertilizer-water retention agent into a compound fertilizer granulation system according to the proportion of 0.5%, mixing and granulating, and creating the biomembrane retention fertilizer after drying, cooling, screening and anti-caking treatment.
Example two:
the liquid biomembrane fertilizer and water retaining agent comprises a fertilizer auxiliary agent, biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and synergistic substances with the functions of promoting growth, resisting stress and resisting diseases, wherein the weight ratio of the fertilizer auxiliary agent is as follows:
the content of biologically fermented high molecular weight polyglutamic acid and glucan is 70 wt%;
the content of the water-soluble film forming material and the film reinforcing agent is 6 wt%;
the content of functional synergistic substances with growth promotion, stress resistance, disease resistance and the like is 6 wt%;
wherein the water-soluble film forming material is 2.5 wt% of guar gum and polyvinyl alcohol and 2 wt% of sephadex.
Wherein the film enhancer is 4 wt% of sodium tetraborate.
Wherein, the functional synergistic substances for promoting growth, resisting stress, resisting disease and the like comprise 7 wt% of alginate oligosaccharides, 2 wt% of chitosan oligosaccharides and 0.5 wt% of oligomeric acid.
The preparation method of the liquid biomembrane fertilizer and water retention agent comprises the following steps:
s1, biologically fermenting the high-molecular-weight polyglutamic acid and the glucan according to a weight ratio to obtain 800 kg of polyglutamic acid fermentation liquor, preserving heat at 70 ℃, and stirring;
s2, preparing 50kg of mixture with functions of growth promotion, stress resistance, disease resistance and the like by utilizing the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acids according to the weight ratio, and adding the mixture into the polyglutamic acid fermentation liquor prepared in the S1 under the condition of stirring;
s3, preparing guar gum, polyvinyl alcohol and sephadex into 3% aqueous solution to prepare 120kg of water-soluble film forming material, adding 30kg of sodium tetraborate into the mixed solution in S2 while stirring;
s4, stirring for 50min at 60-80 ℃, cooling to room temperature, discharging, quantitatively packaging, and preparing a liquid biomembrane fertilizer water retaining agent;
s5, adding the prepared liquid biomembrane fertilizer-water retention agent into a compound fertilizer granulation system according to the proportion of 2%, mixing and granulating, and creating the biomembrane retention fertilizer after drying, cooling, screening and anti-caking treatment.
Example three:
the liquid biomembrane fertilizer and water retaining agent comprises a fertilizer auxiliary agent, biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and synergistic substances with the functions of promoting growth, resisting stress and resisting diseases, wherein the weight ratio of the fertilizer auxiliary agent is as follows:
the content of biologically fermented high molecular weight polyglutamic acid and glucan is 60 wt%;
the content of the water-soluble film forming material and the film reinforcing agent is 10 wt%;
the content of the functional synergistic substances with the functions of promoting growth, resisting stress, resisting disease and the like is 10 percent by weight
Wherein the water-soluble film forming material comprises 5 wt% of guar gum and polyvinyl alcohol and 2 wt% of sephadex.
Wherein the film enhancer is sodium tetraborate 3 wt%.
Wherein, the functional synergistic substances for promoting growth, resisting stress, resisting disease and the like comprise 5 wt% of alginate oligosaccharides, 4 wt% of chitosan oligosaccharides and 1 wt% of oligomeric acid.
The preparation method of the liquid biomembrane fertilizer and water retention agent comprises the following steps:
s1, biologically fermenting the high-molecular-weight polyglutamic acid and the glucan according to a weight ratio to obtain 800 kg of polyglutamic acid fermentation liquor, preserving heat at 80 ℃, and stirring;
s2, preparing 50kg of mixture with functions of growth promotion, stress resistance, disease resistance and the like by utilizing the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acids according to the weight ratio, and adding the mixture into the polyglutamic acid fermentation liquor prepared in the S1 under the condition of stirring;
s3, preparing 5% aqueous solution of guar gum, polyvinyl alcohol and sephadex to prepare 120kg of water-soluble film forming material, adding 30kg of sodium tetraborate into the mixed solution in S2 while stirring;
s4, stirring for 60min at 60-80 ℃, cooling to room temperature, discharging, quantitatively packaging, and preparing a liquid biomembrane fertilizer water retaining agent;
s5, adding the prepared liquid biomembrane fertilizer-water retention agent into a compound fertilizer granulation system according to the proportion of 4%, mixing and granulating, and creating the biomembrane retention fertilizer after drying, cooling, screening and anti-caking treatment.
Experimental data:
two sets of experiments are carried out on the prepared biological membrane maintaining fertilizer and the conventional compound fertilizer for comparison:
the experimental soil is sandy ginger black soil, clay loam in texture and moderate fertility, the corn is harvested in a machine, the straw is crushed and returned to the field, the rotary tillage and the harrowing are carried out, and the experimental variety is Jimai 22.
The first set of experiments: 50 kg/mu of 48% basal application of the biological membrane retention fertilizer, and the nitrogen application amount by taking the conventional fertilizer basal application and basal topdressing (topdressing in jointing stage) as a control respectively: 15. 12, 8 and 20 kg/mu, the base-topdressing ratio is 8: 2; the base fertilizer is compounded with single element fertilizer and the additional fertilizer is urea. And additionally, two treatments of no fertilization and no nitrogen application are set. The total number of the treatments is 9, and the application amount of the phosphorus-potassium fertilizer in the test area is the same (6 kg/mu) except that the fertilizer is not applied. The blocks are randomly arranged and repeated for 3 times, and the area of each small block is 10 square meters.
The experimental data are shown in table 1:
TABLE 1 fertilization conditions under different fertilization treatments
The second set of experiments: 50 kg/mu of 48% base application of biomembrane maintaining fertilizer, comparing with the compound fertilizer in the market, the fertilizing amount of the fertilizer to be tested is 50 kg/mu of base application, 50 kg/mu of conventional fertilizer (CK1) is additionally arranged, 50 kg/mu of conventional fertilizer and 6.5 kg/mu of urea is additionally applied, and blank areas are sequentially arranged, the contrast area and the blank area are inserted in the middle, and the small area is 200 square meters.
The experimental data are shown in table 2:
table 2 exemplary fertilizer treatment conditions
Results and analysis:
the yields for the different fertilization treatments are shown in table 3:
TABLE 3 yields of different treatments
According to experimental data, the following results are obtained:
the yield of 50 kg/mu (CK1) of conventional fertilizer basal application is 385.3 kg/mu, and the yield of 12 basal application (CK2) of conventional fertilizer is 438.2 kg/mu. 48 percent of yield of the basal application biomembrane retention fertilizer is 458.1 kg/mu, which is 18.9 percent higher than that of CK 1; compared with CK2, the yield is increased by 4.5%, and the yield of 48% of the biomembrane maintaining fertilizer is obviously different from CK1 and is not obviously different from CK 2. The results show that: 48 percent of the biological film maintaining fertilizer can ensure the yield of wheat under the condition of not carrying out later-stage additional fertilization, and the effect is better than that of the conventional fertilizer base additional fertilization.
The nitrogen fertilizer utilization under different fertilization treatments is shown in table 4:
TABLE 4 Nitrogen utilization of different treatments
According to experimental data, the following results are obtained:
the nitrogen fertilizer utilization rate of 48% basal application of the biomembrane maintaining fertilizer is improved by 18.2% compared with CK1 according to the calculation of N3.0kg required for producing 100kg of wheat, and therefore, the nitrogen fertilizer utilization rate can be greatly improved when 48% basal application of the biomembrane maintaining fertilizer is carried out by 50 kg.
The effect of the wheat basal application retention fertilizer on different fertilization treatments is shown in table 5:
TABLE 5 wheat basal application Retention Fertilizer Effect
According to experimental data, the following results are obtained:
compared with CK1, the yield of wheat is increased by 72.8 kg/mu by 50kg treatment with 48% basal application of the biomembrane maintaining fertilizer, the yield increasing effect is obvious, the net income increase is 157.4 yuan/mu higher than that of the conventional basal application by the price of 125 yuan of the conventional compound fertilizer, 135 yuan of the novel fertilizer and 15 yuan/mu of topdressing labor, and the net income increase is 35.7 yuan/mu higher than that of the conventional basal application.
The products and benefits under different fertilization treatments are shown in table 6:
TABLE 6 yields and benefits of different treatments
According to experimental data, the following results are obtained:
the nitrogen application amount per mu of the biomembrane maintaining fertilizer is 12kg, the yield per mu is 533.3 kg/mu, the yield is increased by 14.3 percent compared with the adjacent control of equal nitrogen, and the yield is increased by 8.5 percent compared with the N15 base topdressing combination (CK 2). Compared with the adjacent control, the yield is increased by 143.3 yuan/mu, and the yield is increased by 72.1 yuan/mu more than that of CK2, the benefit is obvious, and compared with the compound fertilizer product on the market, the effect is outstanding, and the advantage is obvious.
And (4) conclusion: experiments compare that the utilization rate of the biological film retentivity fertilizer for treating the nitrogen fertilizer is obviously improved compared with that of the conventional fertilizer applied on the basis, the yield can be increased, the popularization is greatly facilitated, the yield of the biological film retentivity fertilizer treatment group can reach the equal-nutrient conventional fertilizer base additional treatment, the yield can be ensured while the fertilizer is saved, and a certain effect of saving fertilizer and increasing efficiency is achieved; compared with the yield and benefit of compound fertilizer products on the market, the method has obvious advantages and is worthy of popularization.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The liquid biomembrane fertilizer and water retaining agent comprises biologically fermented high molecular weight polyglutamic acid and glucan, a water-soluble film forming material, a film reinforcing agent and synergistic substances with the functions of promoting growth, resisting stress and resisting diseases, and is characterized in that the weight ratio of the fertilizer auxiliary agent is as follows:
the content of the biological fermentation high molecular weight polyglutamic acid and glucan is 60-90 wt%;
the content of the water-soluble film forming material and the film reinforcing agent is 2 to 20 weight percent;
the content of the functional synergistic substances with growth promotion, stress resistance, disease resistance and the like is 1 to 20 percent by weight.
2. The liquid biofilm manure water retaining agent of claim 1, wherein: the water-soluble film forming material comprises 0.5-5 wt% of guar gum and polyvinyl alcohol and 0.3-5 wt% of sephadex.
3. The liquid biofilm manure water retaining agent of claim 1, wherein: the film reinforcing agent is 2-10 wt% of sodium tetraborate.
4. The liquid biofilm manure water retaining agent of claim 1, wherein: the functional synergistic substances for promoting growth, resisting stress, resisting diseases and the like comprise 1 to 15 weight percent of alginate oligosaccharide, 0.5 to 4 weight percent of chitosan oligosaccharide and 0.2 to 1 weight percent of oligomeric acid.
5. The liquid biofilm manure water retention agent as defined in claim 1, and a method for preparing the same, which comprises the steps of:
s1, biologically fermenting the high-molecular-weight polyglutamic acid and the glucan according to a weight ratio to obtain 800 kg of polyglutamic acid fermentation liquor, preserving heat at 60-80 ℃, and stirring;
s2, preparing 50kg of mixture with functions of growth promotion, stress resistance, disease resistance and the like by utilizing the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acids according to the weight ratio, and adding the mixture into the polyglutamic acid fermentation liquor prepared in the S1 under the condition of stirring;
s3, preparing 1-5% aqueous solution of guar gum, polyvinyl alcohol and sephadex to prepare 120kg of water-soluble film forming material, adding 30kg of sodium tetraborate into the mixed solution in S2 while stirring;
s4, stirring at 60-80 ℃ for 30-60min, cooling to room temperature, discharging, and quantitatively packaging to obtain a liquid biomembrane fertilizer and water retention agent;
s5, adding the prepared liquid biomembrane fertilizer water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%, mixing and granulating, and creating the biomembrane retention fertilizer after drying, cooling, screening and anti-caking treatment.
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Cited By (1)
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| CN114436706A (en) * | 2022-03-18 | 2022-05-06 | 新洋丰农业科技股份有限公司 | Biological synergistic additive for fertilizer capable of promoting root growth and resisting aging and preparation method thereof |
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