Fertilizer synergistic modifier and processing method thereof

Abstract

The invention discloses a fertilizer synergistic modifier and a processing method thereof. The fertilizer synergistic modifier comprises 40-60 parts of a nutrient regulation and intelligent controlled release component; 1 to 15 parts of a photosensitive synergistic component; 25-45 parts of a carrier, a structure auxiliary agent and a coating material; wherein the nutrient regulation and control and intelligent controlled release component comprises a urease inhibitor, such as N-butyl thiophosphoric triamide (NBPT), a nitrification inhibitor, such as 3, 4-dimethyl pyrazole phosphate (DMPP), humic acid or a salt thereof, such as potassium humate, polyglutamic acid, a seaweed extract, a phosphate-solubilizing / potassium-solubilizing microbial agent, such as bacillus subtilis, and the like. And modified zeolite or mesoporous silica loaded with nitrogen, phosphorus, potassium and trace elements. The invention relates to the technical field of agricultural chemical fertilizers, and provides an intelligent controlled-release fertilizer, which realizes the synergistic interaction of external maintenance, internal strong absorption and environmental adaptation through systematic compounding of mature synergistic components, nano materials with clear photochemical characteristics and intelligent controlled-release carriers, and aims to significantly improve the fertilizer utilization rate, crop yield and stress resistance.

Description

Technical Field

[0001] This invention relates to the field of agricultural chemical fertilizer technology, specifically to a fertilizer enhancer and its processing method. Background Technology

[0002] Improving fertilizer utilization, reducing nutrient loss, and enhancing crop resilience are core requirements for the sustainable development of modern agriculture. Traditional fertilizer enhancement technologies often employ a single mechanism, which has significant limitations in application.

[0003] While some existing synergists show some effectiveness in inhibiting urease or nitrification, their functions are limited, making it difficult to synergistically achieve a comprehensive improvement in nutrient intelligent control, soil system improvement, and crop light energy utilization efficiency. Although synergists marketed with concepts like "light particles" or "light energy," they generally suffer from vague mechanism descriptions, unclear active ingredients, and a lack of reliable experimental data, resulting in unstable and uncontrollable effects in actual application. Furthermore, current technologies are insufficient in improving crop resistance under adverse conditions such as high temperature and low light, and the stability of some chemical synergists in different soil pH environments is limited. This leads to the following: conventional synergists have limited functions and cannot synergistically achieve nutrient control, soil improvement, and enhanced light energy utilization; while conceptual light energy products lack verifiable substantive technical support, resulting in unstable effects and insufficient improvement in crop resistance.

[0004] Therefore, it is essential to provide a composite synergist that can simultaneously achieve high fertilizer efficiency, environmental friendliness, and ecological compatibility to address the above problems. Summary of the Invention

[0005] To address the above-mentioned deficiencies, this invention provides a fertilizer synergist and its processing method that combines a triple mechanism of soil nutrient regulation, plant light energy response, and intelligent nutrient controlled release. This invention achieves synergistic effects of external nutrient enhancement, internal strong absorption, and environmental adaptation by systematically compounding mature synergistic components, nanomaterials with well-defined photochemical properties, and intelligent controlled-release carriers. It aims to significantly improve fertilizer utilization, crop yield, and stress resistance.

[0006] This invention provides the following technical solution: A fertilizer synergist and improver proposed in this solution is characterized by comprising the following components: Nutrient regulation and intelligent controlled-release components: 40-60 parts; Photosensitizing synergist: 1-15 parts; Carrier, structural additives and coating materials: 25~45 parts; The nutrient regulation and intelligent controlled-release components include urease inhibitors (such as n-butylthiophosphoric triamine NBPT), nitration inhibitors (such as 3,4-dimethylpyrazole phosphate DMPP), humic acid or its salts (such as potassium humate), polyglutamic acid, seaweed extracts, phosphorus / potassium-solubilizing microbial agents (such as Bacillus subtilis), and modified zeolite or mesoporous silica loaded with nitrogen, phosphorus, potassium and trace elements.

[0007] The photosensitive enhancing component is surface-modified nano-zinc oxide (ZnO) particles with a particle size range of 10-100 nanometers. The modified particles have good dispersibility in water and can enhance the absorption and utilization of light in the 450-680nm wavelength band.

[0008] The carrier, structural aid, and coating material include one or more of attapulgite, bentonite, and light calcium carbonate, as well as optional biodegradable polymers (such as polylactic acid) for coating.

[0009] The processing method for the fertilizer synergist is characterized by comprising the following preparation steps: Step 1: Pretreatment and compounding of photosensitive components. Nano zinc oxide or nano titanium dioxide powder is added to an ethanol-water solution containing a surface modifier, wherein the concentration of the surface modifier is 1.0%–2.0% (mass / volume), and the volume ratio of ethanol to water is 3:1. The mixture is first ultrasonically dispersed for 30–60 minutes, and then stirred continuously at 60–80℃ for 2–4 hours to ensure sufficient surface modification. After the reaction, the mixture is centrifuged and the precipitate is washed 2–3 times with anhydrous ethanol. Then, it is dried at 50–60℃ for 4–6 hours to obtain the surface-modified photosensitive synergistic component powder.

[0010] Step 2: Nutrient loading. Activate the zeolite or mesoporous silica carrier with a 5%–10% (volume) dilute hydrochloric acid solution, then wash with deionized water until neutral, and dry for later use. Prepare a nutrient loading solution with a total concentration of urea, potassium dihydrogen phosphate, and trace element salts of 20%–30% (mass / volume), and adjust the pH to 6.0–7.0. Immerse the activated carrier in the loading solution with a solid-liquid mass ratio of 1:3–1:5, and shake and adsorb at 50–70℃ for 1–3 hours. After filtration, dry the nutrient-loaded carrier at 60–80℃ to constant weight to obtain the loaded fertilizer core.

[0011] Step 3: Ultrafine grinding and mixing of raw materials. The following raw materials were ultra-finely pulverized and passed through a 200-mesh sieve: Nutrient regulation and intelligent controlled-release components (total weight parts 40–60 parts): Urease inhibitors (such as NBPT) 3–6 parts 2–4 parts of nitrification inhibitor (such as DMPP) 15–25 parts potassium humate 3–8 parts polyglutamic acid 5–15 parts seaweed extract powder 5–10 parts of phosphorus / potassium solubilizing microbial inoculant Nutrient-supporting carrier (zeolite / mesoporous silica) 20–35 parts Photosensitizing synergist: 1–15 parts of the powder obtained in step one. Carrier and structural additives (total weight parts 25–45): 15–25 parts attapulgite 10–20 parts bentonite 5–15 parts of light calcium carbonate Subsequently, all the sieved raw materials are added to the mixing equipment according to the above weight ratio and mixed for 30–60 minutes until homogeneous.

[0012] Step 4: Granulation and drying. Spray a binder, which is a 5% polyvinyl alcohol solution or water, onto the uniformly mixed powder. The amount of binder added is 8%–12% of the total weight of the powder. Make wet granules in the granulation equipment, and then perform staged drying: first dry at 40–50℃ for 1–2 hours, and then raise the temperature to 60–80℃ for 2–4 hours until the moisture content of the granules is less than 3%.

[0013] Step 5: Coating treatment. Use a solution of biodegradable coating material (such as polylactic acid) to coat the dried particles. The concentration of the coating agent is 3%–5% (mass / volume), and the coating rate is 3%–5% of the total weight of the particles. After coating, dry and solidify at 30–40℃. Finally, sieve and select particles with a particle size of 0.5–2.0 mm as the finished product.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: 1. Through the synergistic effect of the three mechanisms of "cost reduction, source expansion, and intelligent supply", the dual improvement of nutrient utilization rate and crop light energy utilization efficiency can be achieved.

[0015] 2. All components are clearly defined. The problem of nanoparticle aggregation is solved through surface modification and composite technology, ensuring stability and bioavailability. Biodegradable coating materials are used, making it environmentally friendly.

[0016] 3. Photosensitive components enhance crops' adaptability to stresses such as low light and high temperature, and combined with seaweed extracts and probiotics, further improve crop health and quality.

[0017] 4. The product is in the form of regular granules and can be directly mixed with commercially available compound fertilizers, urea and other granular fertilizers without changing existing fertilization habits. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of the fertilizer synergist and improver of the present invention and its processing method. Figure 2 This is a schematic diagram illustrating the synergistic effect mechanism of the fertilizer synergist and its processing method of the present invention; Figure 3 The process flow diagram of the fertilizer synergist and improver of the present invention and its processing method; Figure 4 This is a comparative data table showing the application effects of the fertilizer synergist and improver of the present invention and its processing method; Figure 5 This is a summary table of key data from a wheat pot experiment on the fertilizer enhancer and its processing method of the present invention. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] Example 1: Fertilizer Enhancer and Improver for Field Crops (Wheat) Raw material ratio (parts by weight): n-Butylthiophosphoric triamine (NBPT): 5 parts Potassium humate: 20 parts Modified zeolite (supported with N, P, K): 35 parts Surface-modified nano zinc oxide: 3 parts Attapulgite: 35 parts Adhesive (5% polyvinyl alcohol PVA solution): appropriate amount Polylactic acid coating agent: appropriate amount (target coating rate 4%) Processing method: Photosensitive component pretreatment: Add nano zinc oxide to an ethanol solution containing 1% KH-550 silane coupling agent, ultrasonically disperse for 40 minutes, stir and react at 70°C for 3 hours, centrifuge, wash and dry to obtain modified nano zinc oxide powder.

[0022] Nutrient loading: After activating the zeolite with 5% dilute hydrochloric acid, it was soaked in a solution containing urea and potassium dihydrogen phosphate (pH=6.5, 60℃ shaking adsorption for 2h), and then dried to obtain nutrient-loaded modified zeolite.

[0023] Mixing: NBPT, potassium humate, nutrient-loaded zeolite, modified nano zinc oxide and attapulgite are crushed and passed through a 200-mesh sieve, and then put into a mixer and mixed for 45 minutes.

[0024] Granulation and drying: Granulation is carried out by spraying with a 5% PVA solution. The wet granules are first dried and shaped at 40°C for 2 hours, and then dried at 60°C until the moisture content is less than 3%.

[0025] Coating: Take half of the dried granules and use polylactic acid solution for fluidized bed coating, with the coating rate controlled at 4%.

[0026] Screening: Screening yields finished particles of 0.5-2.0 mm.

[0027] Application and Effects: This product was physically mixed with urea at a mass ratio of 3:100 and applied as a base fertilizer to wheat. Pot experiments showed that compared with conventional urea alone, wheat with this synergist had significantly higher grain yield, nitrogen partial productivity and apparent nitrogen utilization rate reached 35.9 g / g and 48.3% respectively, and leaf chlorophyll content was also significantly increased.

[0028] Example 2: Fertilizer enhancer and improver for vegetable crops (cucumbers) Raw material ratio (parts by weight): 3,4-Dimethylpyrazole phosphate (DMPP): 3 parts Seaweed extract powder: 15 parts Compound microbial inoculant (phosphate-solubilizing bacteria + potassium-solubilizing bacteria): 8 parts TiO2-graphene composite photocatalyst material: 8 parts Bentonite: 30 parts Light calcium carbonate: 20 parts Adhesive (water): appropriate amount Processing method: Preparation of photosensitive components: Nano-titanium dioxide and graphene were dispersed in deionized water at a mass ratio of 1:2, and subjected to hydrothermal reaction at 180℃ for 6 hours. After cooling, drying and grinding, the composite material was obtained.

[0029] Mixing: DMPP, seaweed extract, TiO2-graphene composite material, bentonite, and light calcium carbonate are pulverized and passed through a 200-mesh sieve, then mixed for 40 minutes, and then microbial inoculants are added and mixed briefly.

[0030] Granulation and drying: Spray an appropriate amount of water to granulate, and dry at a low temperature below 50℃ until the moisture content is less than 3%.

[0031] Screening: Screening yields finished particles of 0.5-2.0 mm.

[0032] Applications and Effects: This product is suitable for cucurbit vegetables. Experiments show that, compared with conventional fertilization, using this additive in conjunction with other methods can improve fertilizer utilization, reduce the incidence of cucumber diseases, and improve quality indicators such as vitamin C content in the fruit.

[0033] Example 3: Verification Experiment of the Effect of Synergistic Improver Application (Wheat Pot) Experimental Design: Using wheat as the test crop, five treatments were set up, with four replicates for each treatment: Treatment 1: Conventional urea Treatment 2: Urea with commercially available common synergists (mainly containing NBPT and humic acid) Process 3: Urea and the product of Example 1 of this invention (added at 3% by weight of urea) Treatment 4: Urea and control standard without photosensitizing components (the nano zinc oxide in Example 1 was replaced with an equal amount of attapulgite). Process 5: Urea and the product of Example 2 of this invention (added at 3% by weight of urea) Measurement Indicators and Results: After crop maturity, grain yield, total nitrogen, and chlorophyll content were measured, and nitrogen partial productivity (PFP) and apparent nitrogen use efficiency (RE) were calculated. Key data showed that treatments 3 and 5 (using the product of this invention) were significantly superior to treatments 1 (conventional control) and 2 (commercially available synergist) in grain yield, PFP, RE, and chlorophyll content. Most importantly, treatment 3 showed significantly better results than treatment 4 in all indicators, directly demonstrating a synergistic effect between the photosensitizing component and the conventional nutrient-regulating component, rather than a simple additive effect.

[0034] in conclusion: This invention provides a multifunctional, synergistic fertilizer improver by systematically combining and optimizing the processes of nanomaterials with well-defined photochemical properties, intelligent controlled-release carrier technology, and traditional, mature nutrient regulation components. This product effectively solves the problems of single function, unstable effects, and insufficient improvement in stress resistance found in existing technologies, achieving multiple benefits such as increased yield, soil improvement, and stress resistance, aligning with the development direction of green agriculture.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fertilizer synergist and improver, characterized in that, It is composed of the following raw materials in the following proportions: nutrient regulation and intelligent controlled release component: 40-60 parts; photosensitizing synergist component: 1-15 parts; carrier, structural aid and coating material: 25-45 parts.

2. The fertilizer synergist and improver according to claim 1, characterized in that, The nutrient regulation and intelligent controlled-release components include urease inhibitors, nitrification inhibitors, humic acid or its salts, polyglutamic acid, seaweed extracts, phosphorus / potassium-solubilizing microbial agents, and modified zeolite or mesoporous silica loaded with nitrogen, phosphorus, potassium and trace elements; the urease inhibitor includes n-butylthiophosphoric triamine, and the nitrification inhibitor includes 3,4-dimethylpyrazole phosphate.

3. The fertilizer synergist and improver according to claim 1, characterized in that, The photosensitive enhancing component is surface-modified nano-zinc oxide particles with a particle size range of 10-100 nanometers; the photosensitive enhancing component is a TiO2-graphene composite photocatalytic material.

4. The fertilizer synergist and improver according to claim 1, characterized in that, The carrier, structural additive, and coating material include one or more of attapulgite, bentonite, and light calcium carbonate, and optionally a biodegradable polymer for coating, wherein the biodegradable polymer is polylactic acid.

5. A processing method for a fertilizer synergist and improver as described in any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Pretreatment of photosensitizing synergistic components Nano zinc oxide or nano titanium dioxide powder is added to an ethanol aqueous solution containing a surface modifier, ultrasonically dispersed for 30-60 minutes, and then continuously stirred at 60-80℃ for 2-4 hours. After the reaction is completed, the powder is centrifuged, washed, and dried at 50-60℃ for 4-6 hours to obtain the surface-modified photosensitive synergistic component powder. Step 2: Nutrient Loading on the Carrier The zeolite or mesoporous silica support is activated with a 5%-10% (volume ratio) dilute hydrochloric acid solution and washed until neutral. It is then immersed in a nutrient loading solution with a pH of 6.0-7.0 and subjected to adsorption by shaking at 50-70°C for 1-3 hours. The total concentration of urea, potassium dihydrogen phosphate, and trace element salts in the nutrient loading solution is 20%-30% (mass / volume), with a solid-liquid mass ratio of 1:3-1:

5. After filtration, the solution is dried at 60-80°C to obtain the loaded fertilizer core. Step 3: Ultrafine grinding and mixing of raw materials After the raw materials of nutrient regulation and intelligent controlled release components, the photosensitive synergistic component powder obtained in step one, and the carrier and structural aids are ultra-finely pulverized and passed through a 200-mesh sieve, they are mixed evenly according to the formula. Step 4: Granulation and Drying A binder is sprayed onto the uniformly mixed powder for granulation. The binder is a 5% polyvinyl alcohol solution or water, and the amount added is 8%-12% of the total weight of the powder. The resulting wet granules are dried in stages until the moisture content is less than 3%. The staged drying is first drying at 40-50℃ for 1-2 hours, and then heating to 60-80℃ for 2-4 hours. Step 5: Coating and Sieving The dried granules are coated with a 3%-5% (mass / volume) biodegradable coating material solution, with a coating rate of 3%-5% of the total granule weight. After coating, the granules are dried and cured at 30-40℃, and then sieved to obtain finished granules with a particle size of 0.5-2.0 mm.

6. The processing method of a fertilizer synergist and improver according to claim 5, characterized in that: In step one, the concentration of the surface modifier is 1.0%-2.0%, and the volume ratio of ethanol to water is 3:

1.

7. The processing method of a fertilizer synergist and improver according to claim 5, characterized in that: The biodegradable coating material is polylactic acid.

8. The processing method of a fertilizer synergist and improver according to claim 5, characterized in that: The TiO2-graphene composite photocatalytic material in the photosensitive enhancement component is prepared by the following steps: dispersing nano-titanium dioxide and graphene in deionized water, performing a hydrothermal reaction at 150-180℃ for 4-8 hours, and then drying and grinding.

9. The application of a fertilizer synergist or improver according to any one of claims 1-4 or a fertilizer synergist or improver prepared by the processing method according to any one of claims 5-8 in improving crop fertilizer utilization, yield or stress resistance.

10. The application according to claim 9, characterized in that, The application method involves physically mixing the fertilizer enhancer with granular base fertilizer before application.

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