Fertilizer capable of promoting decomposition of harmful elements of crops and preparation method of fertilizer

Abstract

The invention discloses a fertilizer capable of promoting decomposition of harmful elements of crops and a preparation method, and relates to the field of fertilizers. A preparation method of the remediation agent comprises the following steps that modified vermiculite is soaked in iron-based nano liquid, and the remediation agent is prepared, and when fertilizer is applied to soil, pollutants in the soil can be slowly degraded. The traditional Chinese medicine extract in the fertilizer mainly contains flavonoid compounds, the flavonoid compounds have good antioxidant, anti-inflammatory and other biological activities, growth of harmful microorganisms can be inhibited, the soil environment can be improved, growth of beneficial microorganisms can be promoted, and harmful substances such as biuret can be decomposed through enrichment of the beneficial microorganisms and converted into ammonia ions capable of being absorbed by crops; after being conducted and absorbed by crops, substances in the components can destroy acting groups of harmful substances in plants, dissolve deposition factors of residual acting groups of the harmful substances, eliminate residual structures of the acting groups of the harmful substances and decompose harmful substance residues in fruits and soil.

Description

Technical Field

[0001] This invention relates to the field of fertilizers, specifically to a fertilizer that promotes the decomposition of harmful elements in crops and its preparation method. Background Technology

[0002] In modern agricultural production, soil pollution from heavy metals, pesticide residues, and other harmful elements is becoming increasingly prominent, affecting not only crop quality and safety but also threatening human health through the food chain. While traditional fertilizers can provide nutrients, they lack the ability to specifically decompose harmful elements. Meanwhile, with the growing demand for green agriculture and organic food, how to enhance fertilizer nutrient supply while simultaneously improving its soil ecological restoration function has become a pressing technical challenge for the industry. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a fertilizer that promotes the decomposition of harmful elements in crops and a method for its preparation.

[0004] The technical solution of the present invention is as follows: A fertilizer that promotes the decomposition of harmful elements in crops, comprising 30-50 parts by weight of nutrient and 10-15 parts by weight of repair agent; The repair agent is prepared as follows: modified vermiculite is impregnated in iron-based nanofluid and simultaneously subjected to ultrasound to obtain the product.

[0005] Preferably, the modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 300-500℃, 500-700℃ and 700-900℃, for 20-30 minutes at each temperature.

[0006] Preferably, the iron-based nanofluid is prepared as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0007] Preferably, the mass ratio of the ferrous salt, solvent, spirulina, polyethylene glycol and NaBH4 is 1:8-10:0.1-0.3:0.5-2:3-5.

[0008] Preferably, the nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:1.

[0009] Preferably, the inorganic nutrients are prepared by dissolving 5%-20% urea, 5%-15% potassium dihydrogen phosphate, 4%-18% dipotassium hydrogen phosphate, 2%-8% sodium octaborate tetrahydrate, 0.5%-6% zinc EDTA, 1%-5% manganese EDTA, and 30%-60% water at 40-50°C.

[0010] Preferably, the preparation method of the traditional Chinese medicine extract is as follows: Mix 10-25 parts of kudzu root, 15-30 parts of ginkgo leaf, 5-35 parts of isatis root, 10-40 parts of dictamnus root bark, 10-35 parts of alfalfa, 5-15 parts of licorice root, 15-40 parts of white peony root, and 10-20 parts of peppermint. Grind the mixture to a particle size of 30-40 mesh. Add deionized water at a material-to-liquid ratio of 1:5-15. Soak the mixture at 20℃-35℃ for 8-12 hours. Then, extract the mixture 2-3 times using ultrasound at 20-30kHz for 10-25 minutes each time. Filter the mixture and combine the two filtrates to concentrate it into a 1:3 extract.

[0011] Preferably, it also includes active ingredients, solvents, cosolvents, comprehensive additives, synergists, and preservatives; The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0012] This invention also discloses a method for preparing a fertilizer that promotes the decomposition of harmful elements in crops, comprising the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 35-50℃ and bring to a final volume.

[0013] The present invention also discloses the application of a fertilizer that promotes the decomposition of harmful elements in crops on crops; the fertilizer is applied to the soil of the crops.

[0014] The beneficial effects of this invention are: This invention provides a compound fertilizer that promotes the decomposition of harmful element residues in crops. By applying modified vermiculite composite iron-based nano-liquid to the soil, it can slowly degrade pollutants in the soil.

[0015] The herbal extracts in this fertilizer mainly contain flavonoids, which have good antioxidant and anti-inflammatory biological activities. They can inhibit the growth of harmful microorganisms, improve the soil environment, and promote the growth of beneficial microorganisms. The enrichment of beneficial microorganisms can decompose harmful substances such as biuret and convert them into ammonia ions that can be absorbed by crops. After being absorbed by crops, these components can destroy the functional groups of harmful substances in plants, dissolve the deposition factors of residual harmful substance functional groups, and eliminate the residual structure of harmful substance functional groups. The applied elements can promote the nutritional balance during plant growth and decompose harmful substance residues in fruits and soil. Detailed Implementation

[0016] The embodiments of the present invention are described in detail below. These embodiments are exemplary and are only used to explain the present invention, and should not be construed as limiting the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in the art or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all commercially available conventional products.

[0017] Example 1 A fertilizer that promotes the decomposition of harmful elements in crops comprises the following components in parts by weight: 45 parts nutrient, 20 parts solvent, 15 parts cosolvent, 10 parts comprehensive adjuvant, 5 parts synergist, 1 part preservative and 12 parts repair agent. The repair agent is prepared as follows: modified vermiculite is impregnated in an iron-based nanofluid while being sonicated. The mass ratio of modified vermiculite to iron-based nanofluid is 5:10.

[0018] The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 400℃, 600℃ and 800℃, for 25 minutes at each temperature.

[0019] The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0020] The mass ratio of the ferrous salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:8:0.3:2:3.

[0021] The nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:1.

[0022] The inorganic nutrients are prepared as follows: 20% urea, 8% potassium dihydrogen phosphate, 18% dipotassium hydrogen phosphate, 8% sodium octaborate tetrahydrate, 2% zinc EDTA, 5% manganese EDTA, and 39% water are completely dissolved at 45°C. The percentages are by mass.

[0023] The preparation method of the traditional Chinese medicine extract is as follows: 20 parts of kudzu root, 20 parts of ginkgo leaf, 15 parts of isatis root, 28 parts of dictamnus root bark, 15 parts of alfalfa, 10 parts of licorice root, 20 parts of white peony root, and 15 parts of peppermint were pulverized to a particle size of 350 mesh. Deionized water was added at a material-to-liquid ratio of 1:10. After soaking at 25℃ for 10 hours, the mixture was extracted twice with ultrasound at 25kHz for 10 minutes each time. The mixture was then filtered, and the two filtrates were combined and concentrated into a 1:3 extract.

[0024] The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0025] The preparation method includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 40°C and bring the volume to a fixed level.

[0026] Example 2 A fertilizer that promotes the decomposition of harmful elements in crops comprises the following components in parts by weight: 45 parts nutrient, 20 parts solvent, 15 parts cosolvent, 10 parts comprehensive adjuvant, 5 parts synergist, 1 part preservative and 12 parts repair agent. The repair agent is prepared as follows: modified vermiculite is impregnated in an iron-based nanofluid while being sonicated. The mass ratio of modified vermiculite to iron-based nanofluid is 4:10.

[0027] The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 400℃, 600℃ and 850℃, for 25 minutes at each temperature.

[0028] The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0029] The mass ratio of the divalent iron salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:10:0.2:1:5.

[0030] The nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:1.

[0031] The inorganic nutrients are prepared as follows: 20% urea, 8% potassium dihydrogen phosphate, 18% dipotassium hydrogen phosphate, 8% sodium octaborate tetrahydrate, 2% zinc EDTA, 5% manganese EDTA, and 39% water are completely dissolved at 45°C.

[0032] The preparation method of the traditional Chinese medicine extract is as follows: 20 parts of kudzu root, 20 parts of ginkgo leaf, 15 parts of isatis root, 28 parts of dictamnus root bark, 15 parts of alfalfa, 10 parts of licorice root, 20 parts of white peony root, and 15 parts of peppermint were pulverized to a particle size of 350 mesh. Deionized water was added at a material-to-liquid ratio of 1:10. After soaking at 25℃ for 10 hours, the mixture was extracted twice with ultrasound at 25kHz for 10 minutes each time. The mixture was then filtered, and the two filtrates were combined and concentrated into a 1:3 extract.

[0033] The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0034] The preparation method includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 40°C and bring the volume to a fixed level.

[0035] Example 3 A fertilizer that promotes the decomposition of harmful elements in crops comprises the following components in parts by weight: 45 parts nutrient, 20 parts solvent, 15 parts cosolvent, 10 parts comprehensive adjuvant, 5 parts synergist, 1 part preservative and 12 parts repair agent. The repair agent is prepared as follows: modified vermiculite is impregnated in an iron-based nanofluid while being sonicated. The mass ratio of modified vermiculite to iron-based nanofluid is 4:10.

[0036] The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 300℃, 560℃ and 900℃, for 25 minutes at each temperature.

[0037] The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0038] The mass ratio of the ferrous salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:8-10:0.1-0.3:0.5-2:3-5.

[0039] The nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:1.

[0040] The inorganic nutrients are prepared as follows: 20% urea, 8% potassium dihydrogen phosphate, 18% dipotassium hydrogen phosphate, 8% sodium octaborate tetrahydrate, 2% zinc EDTA, 5% manganese EDTA, and 39% water are completely dissolved at 40°C.

[0041] The preparation method of the traditional Chinese medicine extract is as follows: 20 parts of kudzu root, 20 parts of ginkgo leaf, 15 parts of isatis root, 28 parts of dictamnus root bark, 15 parts of alfalfa, 10 parts of licorice root, 20 parts of white peony root, and 15 parts of peppermint were pulverized to a particle size of 350 mesh. Deionized water was added at a material-to-liquid ratio of 1:10. After soaking at 25℃ for 10 hours, the mixture was extracted twice with ultrasound at 25kHz for 10 minutes each time. The mixture was then filtered, and the two filtrates were combined and concentrated into a 1:3 extract.

[0042] The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0043] The preparation method includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 40°C and bring the volume to a fixed level.

[0044] Example 4 A fertilizer that promotes the decomposition of harmful elements in crops comprises the following components in parts by weight: 45 parts nutrient, 20 parts solvent, 15 parts cosolvent, 10 parts comprehensive adjuvant, 5 parts synergist, 1 part preservative and 12 parts repair agent. The repair agent is prepared as follows: modified vermiculite is impregnated in an iron-based nanofluid while being sonicated. The mass ratio of modified vermiculite to iron-based nanofluid is 3-5:10.

[0045] The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 400℃, 600℃ and 770℃, for 30 minutes at each temperature.

[0046] The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0047] The mass ratio of the ferrous salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:10:0.3:2:5.

[0048] The nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:1.

[0049] The inorganic nutrients are prepared as follows: 20% urea, 8% potassium dihydrogen phosphate, 18% dipotassium hydrogen phosphate, 8% sodium octaborate tetrahydrate, 2% zinc EDTA, 5% manganese EDTA, and 39% water are completely dissolved at 40-50℃.

[0050] The preparation method of the traditional Chinese medicine extract is as follows: 20 parts of kudzu root, 20 parts of ginkgo leaf, 15 parts of isatis root, 28 parts of dictamnus root bark, 15 parts of alfalfa, 10 parts of licorice root, 20 parts of white peony root, and 15 parts of peppermint were pulverized to a particle size of 350 mesh. Deionized water was added at a material-to-liquid ratio of 1:10. After soaking at 25℃ for 10 hours, the mixture was extracted twice with ultrasound at 25kHz for 10 minutes each time. The mixture was then filtered, and the two filtrates were combined and concentrated into a 1:3 extract.

[0051] The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0052] The preparation method includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 45°C and bring the volume to a fixed level.

[0053] Example 5 A fertilizer that promotes the decomposition of harmful elements in crops comprises the following components in parts by weight: 45 parts nutrient, 20 parts solvent, 15 parts cosolvent, 10 parts comprehensive adjuvant, 5 parts synergist, 1 part preservative and 12 parts repair agent. The repair agent is prepared as follows: modified vermiculite is impregnated in an iron-based nanofluid while being sonicated. The mass ratio of modified vermiculite to iron-based nanofluid is 3:10.

[0054] The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 400℃, 700℃ and 900℃, for 25 minutes at each temperature.

[0055] The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

[0056] The mass ratio of the divalent iron salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:10:0.1:0.5:3.

[0057] Preferably, the nutrient solution comprises a mixture of traditional Chinese medicine extract and inorganic nutrients in a mass ratio of 5:1.

[0058] The inorganic nutrients are prepared as follows: 20% urea, 8% potassium dihydrogen phosphate, 18% dipotassium hydrogen phosphate, 8% sodium octaborate tetrahydrate, 2% zinc EDTA, 5% manganese EDTA, and 39% water are completely dissolved at 40-50℃.

[0059] The preparation method of the traditional Chinese medicine extract is as follows: 20 parts of kudzu root, 20 parts of ginkgo leaf, 15 parts of isatis root, 28 parts of dictamnus root bark, 15 parts of alfalfa, 10 parts of licorice root, 20 parts of white peony root, and 15 parts of peppermint were pulverized to a particle size of 350 mesh. Deionized water was added at a material-to-liquid ratio of 1:10. After soaking at 25℃ for 10 hours, the mixture was extracted twice with ultrasound at 25kHz for 10 minutes each time. The mixture was then filtered, and the two filtrates were combined and concentrated into a 1:3 extract.

[0060] The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

[0061] The preparation method includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 45°C and bring the volume to a fixed level.

[0062] Comparative Example 1 Unlike Example 1, no repair agent was added.

[0063] Comparative Example 2 Unlike Example 1, there was no modification.

[0064] Comparative Example 3 Unlike Example 1, the repair agent directly uses modified vermiculite, without the step of impregnating with iron-based nano-liquid.

[0065] The fertilizers of the above-described embodiments and comparative examples were applied to litchi trees. Several 10-year-old litchi trees of the Nuomici variety were selected, with a flowering period from late March to late April. 40 trees were planted per mu (667 square meters), and each group consisted of 5 mu (200 trees in total). The fertilizers of each embodiment and comparative example were used in the group.

[0066] The fertilization process is as follows: In January, 2.5 kg / plant of compound fertilizer (15-15-15) was applied as base fertilizer. In March and May, 0.75 kg / plant of compound fertilizer (15-15-15) was applied as top dressing. In mid-March, early April, late April, and early May, the fertilizer used in the examples and comparative examples was applied at a concentration of 1:800 (i.e., fertilizer diluted 800 times with water), at a rate of 1 kg / plant, via fertigation. Harvesting took place in late June, and the yield rate (%) was calculated by dividing the number of fruits by the number of female flowers. Simultaneously, the rate of change in soil pollutants (nitrates) was tested. Details are shown in Table 1. Table 1 Test Results Sample Success rate (%) Reduction in nitrate levels in soil (%) Example 1 30.2 28 Example 2 29.8 26 Example 3 28.5 27 Example 4 29.2 25 Example 5 30.1 26 Comparative Example 1 15.2 9 Comparative Example 2 20.1 16 Comparative Example 3 19.5 12 Compared to the control group, the fertilizer in this example significantly increased the yield of litchi and reduced the nitrate content in the soil, greatly improving the quality of litchi. The reasons for this improvement are as follows: The modified vermiculite composite iron-based nano-liquid, when applied to the soil, can slowly degrade pollutants. The vermiculite, calcined at different temperatures, has a variety of pore sizes, allowing for the release of iron from the remediation agent at different stages. Furthermore, the herbal extracts in this fertilizer mainly contain flavonoids, which possess excellent antioxidant and anti-inflammatory biological activities. These components can inhibit the growth of harmful microorganisms, improve the soil environment, and promote the growth of beneficial microorganisms. The accumulation of beneficial microorganisms can decompose harmful substances such as biuret, converting them into ammonia ions that crops can absorb. After being absorbed by the crop, these components can destroy the functional groups of harmful substances within the plant, dissolve the deposition factors of residual harmful functional groups, and eliminate the residual structure of harmful functional groups. The applied elements can promote nutritional balance during plant growth and decompose harmful residues in fruits and soil.

[0067] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0068] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A fertilizer that promotes the decomposition of harmful elements in crops, characterized in that, Includes 30-50 parts by weight of nutrients and 10-15 parts by weight of repair agent; The repair agent is prepared as follows: modified vermiculite is impregnated in iron-based nanofluid and simultaneously subjected to ultrasound to obtain the product.

2. The fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The modified vermiculite is prepared as follows: Vermiculite was calcined in sequence at 300-500℃, 500-700℃ and 700-900℃, for 20-30 minutes at each temperature.

3. The fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The preparation method of the iron-based nanofluid is as follows: The ferrous salt, solvent, and spirulina were mixed, and then an aqueous solution of polyethylene glycol and NaBH4 was added to prepare the product.

4. A fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The mass ratio of the ferrous salt, solvent, spirulina, polyethylene glycol, and NaBH4 is 1:8-10:0.1-0.3:0.5-2:3-5.

5. A fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The nutrient solution comprises a mixture of traditional Chinese medicine extracts and inorganic nutrients in a mass ratio of 3-5:

1.

6. A fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The inorganic nutrients are prepared as follows: 5%-20% urea, 5%-15% potassium dihydrogen phosphate, 4%-18% dipotassium hydrogen phosphate, 2%-8% sodium octaborate tetrahydrate, 0.5%-6% zinc EDTA, 1%-5% manganese EDTA, and 30%-60% water are completely dissolved at 40-50℃ to obtain the product.

7. A fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, The preparation method of the traditional Chinese medicine extract is as follows: Mix 10-25 parts of kudzu root, 15-30 parts of ginkgo leaf, 5-35 parts of isatis root, 10-40 parts of dictamnus root bark, 10-35 parts of alfalfa, 5-15 parts of licorice root, 15-40 parts of white peony root, and 10-20 parts of peppermint. Grind the mixture to a particle size of 30-40 mesh. Add deionized water at a material-to-liquid ratio of 1:5-15. Soak the mixture at 20℃-35℃ for 8-12 hours. Then, extract the mixture 2-3 times using ultrasound at 20-30kHz for 10-25 minutes each time. Filter the mixture and combine the two filtrates to concentrate it into a 1:3 extract.

8. A fertilizer according to claim 1 that promotes the decomposition of harmful elements in crops, characterized in that, It also includes active ingredients, solvents, cosolvents, comprehensive additives, synergists, and preservatives; The solvent is deionized water, the co-solvent is ethanol, the comprehensive additive is borneol, the synergist is phytic acid, and the preservative is potassium sorbate.

9. A method for preparing a fertilizer that promotes the decomposition of harmful elements in crops, characterized in that, Includes the following steps: S1: Prepare the nutrient solution and the repair solution separately; S2: Mix the nutrients, repair agents, solvents, cosolvents, comprehensive additives, synergists, and preservatives at 35-50℃ and bring to a final volume.

10. The application of a fertilizer as described in any one of claims 1-8, which promotes the decomposition of harmful elements in crops, on crops, characterized in that, Apply fertilizer to the soil of the crop.