Organic foliar fertilizer and production method

Abstract

The present application relates to the technical field of fertilizer, in particular to an organic leaf fertilizer and a production method thereof.The present application solves the problems of poor fertilizer efficiency and easy damage to soil structure.The present application improves the soil organic matter content of the organic leaf fertilizer by changing the dosage of kelp, the temperature and time of ultrasonic and the dosage of kelp extract; improves the relative content of plant chlorophyll of the organic leaf fertilizer by changing the dosage of earthworms, trypsin and amino acid extract; improves the soil porosity of the organic leaf fertilizer and reduces the soil bulk density by changing the dosage of shrimp shells, the temperature of removing protein and the dosage of chitosan extract; increases the plant leaf thickness of the organic leaf fertilizer by changing the dosage of straw and the dosage of cellulose extract; and improves the fertilizer utilization rate of the organic leaf fertilizer by changing the temperature and time of stirring and the time of emulsification and grinding.

Description

Technical Field

[0001] This invention relates to the field of fertilizer technology, specifically to an organic foliar fertilizer and its production method. Background Technology

[0002] Foliar fertilizer is a fertilizer applied directly to the leaves of crops for absorption. It is used when root fertilization is difficult, such as when root activity declines and nutrient absorption capacity decreases, or when soil conditions are unfavorable for crop growth. In these cases, foliar fertilizers are needed to supplement the crop's nutrition and meet its growth and development needs. Currently, the excessive use of chemical fertilizers and pesticides poses a significant threat to the ecological environment. Reduced soil organic matter content and increasing soil compaction hinder plant growth and reduce yields.

[0003] Foliar fertilizers are now widely used in agriculture, as they can directly and quickly replenish the nutrients needed by plants and promote their growth. However, foliar fertilizers still have drawbacks such as low fertilizer utilization and low photosynthetic efficiency, resulting in poor fertilizer effectiveness and the potential to damage soil structure, hindering plant growth and polluting the environment, thus severely limiting their application in agriculture.

[0004] Therefore, an organic foliar fertilizer and its production method are proposed. Summary of the Invention

[0005] The purpose of this invention is to design an organic foliar fertilizer and its production method. This invention solves the problems of poor fertilizer efficiency and easy damage to soil structure caused by foliar fertilizers. The raw materials for synthesizing the organic foliar fertilizer include kelp extract, amino acid extract, chitosan extract, potassium dihydrogen phosphate, urea, cellulose extract, chelated iron, Bacillus subtilis, a mixture of trace elements, polyglutamic acid, and deionized water. This invention increases the soil organic matter content of the organic foliar fertilizer by changing the amount of kelp, the temperature and time of ultrasonication, and the amount of kelp extract; increases the relative chlorophyll content of the plant by changing the amount of earthworms, trypsin, and amino acid extract; increases soil porosity and reduces soil bulk density by changing the amount of shrimp shells, the temperature for protein removal, and the amount of chitosan extract; increases the leaf thickness of the plant by changing the amount of straw and cellulose extract; and improves the fertilizer utilization rate of the organic foliar fertilizer by changing the temperature and time of stirring and the emulsification and grinding time.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a method for producing organic foliar fertilizer, comprising the following steps: S1 Take fresh kelp and wash it with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put the small pieces of kelp A into the first portion of deionized water, sonicate at a temperature of TE1 for TI1 time, and then centrifuge at 8000 rpm to obtain the kelp extract. S2. Kelp extract, amino acid extract, chitosan extract, potassium dihydrogen phosphate, and urea are added to the second part of deionized water. Acetic acid is added to adjust the pH value to slightly acidic. The mixture is then mixed evenly to obtain mixture B. S3 disperses cellulose extract, chelated iron, trace element mixture, and polyglutamic acid in the remaining deionized water to obtain mixture C; S4 mixes mixture B and mixture C, stirs at temperature TE2 for TI2 time, cools down and adds Bacillus subtilis, then emulsifies and grinds for TI3 time to obtain organic foliar fertilizer; By weight, the raw materials for producing organic foliar fertilizer include: 3-7 parts kelp extract; 2-6 parts amino acid extract; 1-5 parts chitosan extract; 15 parts potassium dihydrogen phosphate; 10 parts urea; 1-1.5 parts cellulose extract; 2 parts chelated iron; 3 parts Bacillus subtilis; 3 parts trace element mixture; 5 parts polyglutamic acid; and 60 parts deionized water.

[0007] Preferably, the first portion of deionized water in S1 is 20% of the total amount of deionized water; the temperature TE1 is 60℃~80℃; and the time TI1 is 30min~60min.

[0008] Preferably, the second portion of deionized water in S2 is 40% of the total amount of deionized water.

[0009] Preferably, the remaining deionized water in S3 is 40% of the total deionized water.

[0010] Preferably, in S4, the temperature TE2 is 50℃-60℃; the TI2 time is 1h-3h; and the TI3 time is 2h-6h.

[0011] Preferably, the preparation method of the amino acid extract is as follows: take 5-10 parts of earthworms, wash and crush them, add the crushed earthworms and 1-5 parts of trypsin to 15 parts of deionized water for enzymatic hydrolysis, hydrolyze at 37°C for 2 hours, then centrifuge at 8000 rpm, and take the supernatant to obtain the amino acid extract.

[0012] Preferably, the preparation method of chitosan extract is as follows: Take 3-8 parts of shrimp shells, wash them, soak the washed shrimp shells in 30 parts of 5% dilute hydrochloric acid for 2 hours to remove minerals, and wash them to obtain demineralized material; put the demineralized material into 30 parts of 5% sodium hydroxide solution and continue to remove protein at 70℃-80℃ for 3 hours, and wash it to obtain chitin precursor; put the chitin precursor into 45% sodium hydroxide solution and continue to react at 105℃ for 3 hours to carry out deacetylation reaction, and wash it until neutral after the treatment to obtain chitosan precursor; put the chitosan precursor into an oven and dry it at 60℃ for 12 hours, and then grind it to obtain chitosan extract.

[0013] Preferably, the preparation method of the cellulose extract is as follows: Take 1-5 parts of straw, wash it to remove impurities, put the washed straw into 25 parts of a 10% sodium hydroxide solution to remove lignin and hemicellulose, and after washing, obtain substance a; put substance a into 25 parts of a 5% dilute hydrochloric acid solution to remove non-cellulose substances, and after washing, obtain substance b; put substance b into an oven and dry at 60°C for 12 hours, and then grind to obtain the cellulose extract.

[0014] Preferably, the trace element mixture is obtained by mixing compounds that provide zinc, copper, iron, manganese and molybdenum; these compounds are: zinc sulfate monohydrate, copper sulfate pentahydrate, ferric sulfate heptahydrate, manganese sulfate monohydrate and ammonium molybdate tetrahydrate.

[0015] Preferably, the effective viable count of Bacillus subtilis is not less than 1×10⁻⁶. 9 CFU / g; chelated iron is EDTA-Fe.

[0016] Another aspect of the present invention provides an organic foliar fertilizer, the raw materials for which include kelp extract, amino acid extract, chitosan extract, potassium dihydrogen phosphate, urea, cellulose extract, chelated iron, Bacillus subtilis, a mixture of trace elements, polyglutamic acid, and deionized water.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes kelp to prepare kelp extract, and simultaneously modifies the amount of kelp extract to increase the soil organic matter content of the organic foliar fertilizer; organic matter can provide the nutrients needed by plants, improve the efficiency of plant absorption of water and nutrients, enhance the plant's drought resistance, cold resistance and disease resistance, and strengthen its growth resilience; moreover, organic matter comes from natural substances, will not cause pollution to the environment, and can improve soil structure and increase soil fertility.

[0018] 2. This invention improves the photosynthetic efficiency of organic foliar fertilizer by changing the dosage of earthworms, trypsin, and amino acid extracts. Amino acids can participate in the physiological metabolism of plants, promote the absorption of nutrients, and increase the chlorophyll content of plants, thereby improving the photosynthetic efficiency of plants, increasing yield, and improving fertilizer efficiency. Moreover, amino acids are extracted from earthworms and are harmless to the environment.

[0019] 3. This invention improves soil porosity and reduces soil bulk density by changing the amount of shrimp shells used, the temperature at which proteins are removed, and the amount of chitosan extract used. Chitosan can improve the physical properties of the soil, increase soil porosity, and reduce soil bulk density, thereby increasing soil aeration and water retention capacity, solving the problem of soil compaction, and promoting root growth. Furthermore, chitosan can increase the absorption of water and nutrients by plants, improve fertilizer utilization, and enhance fertilizer efficiency.

[0020] 4. This invention increases the thickness of plant leaves in organic foliar fertilizer by changing the amount of straw and cellulose extract used; cellulose can promote the formation of plant cell walls, thicken leaves, enhance the structural strength of plants, support healthy plant growth; and can provide the nutrients needed by plants, increase the content of organic matter, promote plant growth, and enhance fertilizer efficiency. Attached Figure Description

[0021] Figure 1 The graphs show the increase in plant leaf thickness in Examples 44, 48-56, and Comparative Example 4 of this invention. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] For details, please refer to [link / reference]. Figure 1 This invention provides a method for producing organic foliar fertilizer, the technical solution of which is as follows: Example 1 Preparation of amino acid extract: Take 5 parts of earthworms, wash and crush them, add the crushed earthworms and 1 part of trypsin to 15 parts of deionized water for enzymatic hydrolysis, hydrolyze at 37℃ for 2 hours, then centrifuge at 8000 rpm, and take the supernatant to obtain amino acid extract.

[0024] Preparation of chitosan extract: Take 3 portions of shrimp shells, wash them, and soak them in 30 portions of 5% dilute hydrochloric acid for 2 hours to remove minerals. After washing, obtain demineralized shells. Place the demineralized shells in 30 portions of 5% sodium hydroxide solution and continue at 70℃ for 3 hours to remove proteins. After washing, obtain chitin precursor. Place the chitin precursor in 45% sodium hydroxide solution and continue reacting at 105℃ for 3 hours to carry out deacetylation. After the treatment, wash until neutral to obtain chitosan precursor. Place the chitosan precursor in an oven and dry at 60℃ for 12 hours, and then grind to obtain chitosan extract.

[0025] Preparation of cellulose extract: Take one part of straw, wash it to remove impurities, put the washed straw into 25 parts of a 10% sodium hydroxide solution to remove lignin and hemicellulose, and after washing, obtain substance a; put substance a into 25 parts of a 5% dilute hydrochloric acid to remove non-cellulose substances, and after washing, obtain substance b; put substance b into an oven and dry at 60℃ for 12 hours, and then grind it to obtain cellulose extract.

[0026] Producing organic foliar fertilizer: S1 Take 5 portions of fresh kelp, wash the fresh kelp with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put small pieces of kelp A into 12 portions of deionized water, sonicate at 60℃ for 30 minutes, then centrifuge at 8000 rpm, and take the supernatant to obtain kelp extract. S2. Add 3 parts of kelp extract, 2 parts of amino acid extract, 1 part of chitosan extract, 15 parts of potassium dihydrogen phosphate, and 10 parts of urea to 24 parts of deionized water and mix well to obtain mixture B. S3 disperses 1 part of cellulose extract, 2 parts of chelated iron, 3 parts of a mixture of zinc, copper, iron, manganese and molybdenum elements, and 5 parts of polyglutamic acid in 24 parts of deionized water to obtain mixture C; S4 mixes mixtures B and C, stirs at 50°C for 1 hour, adds 3 parts of Bacillus subtilis, and then emulsifies and grinds for 2 hours to obtain organic foliar fertilizer.

[0027] Example 2-17 The specific differences in the production method and parameter conditions of Example 1 are shown in Table 1.

[0028] Table 1 Parameters and Conditions for Examples 1-17 Comparative Example 1 The production method and parameters are the same as in Example 1, except that no kelp extract is added.

[0029] Example 18 Soil Organic Matter Content Test The organic matter content in the soil was determined according to the method for determining soil organic matter in GB9834-1988 standard. The specific results are shown in Table 2.

[0030] Table 2 Soil organic matter content test results for Examples 1-17 and Comparative Example 1 Table 2 shows that in Examples 1-17 and Comparative Example 1, the soil organic matter content in Comparative Example 1 was the lowest, only 1.13%, when no kelp extract was added; the soil organic matter content increased significantly after adding kelp extract. When the amount of kelp was changed while the ultrasound temperature and time, and the amount of kelp extract remained constant, the soil organic matter content first increased and then decreased. When the amount of kelp was 8 parts, the soil organic matter content in Example 4 was the highest, at 2.19%. When the amount of kelp was 8 parts, and the ultrasound temperature, ultrasound time, and kelp extract remained constant, the soil organic matter content was highest at an ultrasound temperature of 70℃, with the soil organic matter content in Example 8 being 2.28%. When the amount of kelp was 8 parts, the ultrasound temperature was 70℃, the ultrasound time was changed, and the amount of kelp extract remained constant, the soil organic matter content reached its lowest point after 40 minutes of ultrasound. The soil organic matter content in Example 11 was 2.31%. When the amount of kelp used was 8 parts, the ultrasonic temperature was 70°C, and the ultrasonic time was 40 minutes, the soil organic matter content first increased and then decreased when the amount of kelp extract was changed. When the amount of kelp extract was 5 parts, the soil organic matter content in Example 15 was the highest, at 2.45%. Organic matter can provide plants with the nutrients they need, improve the efficiency of plant absorption of water and nutrients, improve the plant's drought resistance, cold resistance and disease resistance, and enhance its growth resilience. Moreover, organic matter comes from natural substances and will not cause pollution to the environment. It can improve soil structure and increase soil fertility.

[0031] Example 19 Chitosan extract and cellulose extract were prepared according to the method described in Example 15 above.

[0032] Preparation of amino acid extract: Take 6 portions of earthworms, wash and crush them, add the crushed earthworms and 1 portion of trypsin to 15 portions of deionized water for enzymatic hydrolysis, hydrolyze at 37℃ for 2 hours, then centrifuge at 8000 rpm, and take the supernatant to obtain amino acid extract.

[0033] Producing organic foliar fertilizer: S1 Take 8 portions of fresh kelp, wash the fresh kelp with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put the small pieces of kelp A into 12 portions of deionized water, sonicate at 70℃ for 40 minutes, then centrifuge at 8000 rpm, and take the supernatant to obtain kelp extract. S2. Add 5 parts of kelp extract, 2 parts of amino acid extract, 1 part of chitosan extract, 15 parts of potassium dihydrogen phosphate, and 10 parts of urea to 24 parts of deionized water and mix well to obtain mixture B. S3 disperses 1 part of cellulose extract, 2 parts of chelated iron, 3 parts of a mixture of zinc, copper, iron, manganese and molybdenum elements, and 5 parts of polyglutamic acid in 24 parts of deionized water to obtain mixture C; S4 mixes mixtures B and C, stirs at 50°C for 1 hour, adds 3 parts of Bacillus subtilis, and then emulsifies and grinds for 2 hours to obtain organic foliar fertilizer.

[0034] Examples 20-31 The specific differences in the production method and parameter conditions with reference to Example 19 are shown in Table 3.

[0035] Table 3 Parameter conditions for Examples 15 and 19-31 Comparative Example 2 The production method and parameters are the same as in Example 19, except that no amino acid extract is added.

[0036] Example 32: Chlorophyll Relative Content Test The chlorophyll SPAD value of the leaves of the plants under test was measured using a chlorophyll detection instrument. When no fertilizer was applied, the chlorophyll SPAD value was 35.2±0.2. The specific results are shown in Table 4.

[0037] Table 4. Chlorophyll relative content tests in Examples 15, 19-31, and Comparative Example 2. Table 4 shows that among Examples 15, 19-31, and Comparative Example 2, Comparative Example 2 had the lowest chlorophyll SPAD value, indicating that the plant's photosynthetic efficiency was the lowest at this time. When the amount of earthworms was changed while the amounts of trypsin and amino acid extract remained constant, the relative chlorophyll content of the plants first increased and then decreased, reaching its highest point when the amount of earthworms was 7 parts, with a chlorophyll SPAD value of 41.2 ± 0.8 in Example 20. When the amount of earthworms was fixed at 7 parts, and the amount of trypsin was changed while the amount of amino acid extract remained constant, the relative chlorophyll content reached its highest point when the amount of trypsin was 3 parts, with a chlorophyll SPAD value of 41.8 ± 0.3 in Example 25. When the amount of earthworms was fixed at 7 parts, and the amount of trypsin was changed while the amount of amino acid extract remained constant, the relative chlorophyll content reached its highest point when the amount of trypsin was 3 parts, with a chlorophyll SPAD value of 41.8 ± 0.3 in Example 25. The dosage was 7 parts, and the dosage of trypsin was 3 parts. When the dosage of amino acid extract was changed, the relative chlorophyll content of the plant first increased and then decreased. The relative chlorophyll content was highest when the dosage of amino acid extract was 4 parts. The chlorophyll SPAD value of Example 29 was 42.7±0.4. This is because amino acids can participate in the physiological metabolism of plants, promote the absorption of nutrients, increase the chlorophyll content of plants, thereby improving the photosynthetic efficiency of plants, increasing yield, and improving fertilizer efficiency. In addition, amino acids are extracted from earthworms and are harmless to the environment.

[0038] Example 33 The amino acid extract and cellulose extract were prepared according to the method described in Example 29 above.

[0039] Preparation of chitosan extract: Take 4 portions of shrimp shells, wash them, and soak them in 30 portions of 5% dilute hydrochloric acid for 2 hours to remove minerals. After washing, obtain demineralized shells. Place the demineralized shells in 30 portions of 5% sodium hydroxide solution and continue at 70℃ for 3 hours to remove proteins. After washing, obtain chitin precursor. Place the chitin precursor in 45% sodium hydroxide solution and continue reacting at 105℃ for 3 hours to carry out deacetylation. After the treatment, wash until neutral to obtain chitosan precursor. Place the chitosan precursor in an oven and dry at 60℃ for 12 hours, and then grind to obtain chitosan extract.

[0040] Producing organic foliar fertilizer: S1 Take 8 portions of fresh kelp, wash the fresh kelp with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put the small pieces of kelp A into 12 portions of deionized water, sonicate at 70℃ for 40 minutes, then centrifuge at 8000 rpm, and take the supernatant to obtain kelp extract. S2. Add 5 parts of kelp extract, 4 parts of amino acid extract, 1 part of chitosan extract, 15 parts of potassium dihydrogen phosphate, and 10 parts of urea to 24 parts of deionized water and mix evenly to obtain mixture B. S3 disperses 1 part of cellulose extract, 2 parts of chelated iron, 3 parts of a mixture of zinc, copper, iron, manganese and molybdenum elements, and 5 parts of polyglutamic acid in 24 parts of deionized water to obtain mixture C; S4 mixes mixtures B and C, stirs at 50°C for 1 hour, adds 3 parts of Bacillus subtilis, and then emulsifies and grinds for 2 hours to obtain organic foliar fertilizer.

[0041] Examples 34-46 The specific differences in the production method and parameter conditions of Example 33 are shown in Table 5.

[0042] Table 5 Parameters and conditions for Examples 29 and 33-46 Comparative Example 3 The production method and parameters are the same as in Example 33, except that chitosan extract was not added.

[0043] Example 47 Soil porosity and soil bulk density test Soil porosity is tested using the moisture method (volume method). The steps are as follows: Take a certain volume of soil and record its mass (wet weight); dry the soil to constant weight and record the dry weight; calculate the porosity using the volume of water and the volume of soil. The formula is: Porosity (%) = (wet weight - dry weight) / wet weight × 100%. Soil bulk density is tested using the following method: Take a piece of soil of known volume, dry it to constant weight, record the dry weight, and calculate the soil bulk density. The formula is: Bulk density (g / cm³) 3 = Volume / Dry weight; the specific results are shown in Table 6.

[0044] Table 6 Soil porosity and soil bulk density tests in Examples 29, 33-46 and Comparative Example 3 As shown in Table 6, in Examples 29, 33-46, and Comparative Example 3, without the addition of chitosan extract, Comparative Example 3 had the lowest soil porosity and the highest soil bulk density, at 40.5% and 1.59 g / cm³, respectively. 3 After adding chitosan extract, soil porosity significantly increased and soil bulk density significantly decreased. When the amount of shrimp shells used was varied while the temperature for protein removal and the amount of chitosan extract remained constant, soil porosity first increased and then decreased, while soil bulk density first decreased and then increased. When the amount of shrimp shells was 5 parts, the soil porosity in Example 34 was the highest at 47.0%, and the soil bulk density was the lowest at 1.42 g / cm³. 3When the amount of shrimp shells used was fixed at 5 parts, and the temperature for protein removal was varied while the amount of chitosan extract remained constant, the soil porosity reached its highest point at a protein removal temperature of 74°C. In Example 39, the soil porosity was 47.6%, and the soil bulk density was 1.35 g / cm³. 3 Treatment at 74℃ not only removed proteins but also caused moderate swelling of macromolecules, which is beneficial for subsequent structural development, thereby forming a better porous cross-linked network in the soil. When the amount of shrimp shells used was 5 parts and the protein removal temperature was 74℃, changing the amount of chitosan extract resulted in soil porosity first increasing and then decreasing, and soil bulk density first decreasing and then increasing. When the amount of chitosan extract was 3 parts, the soil porosity in Example 44 was the highest at 48.3%, and the soil bulk density was the lowest at 1.31 g / cm³. 3 At this time, chitosan can improve the physical properties of the soil, increase soil porosity, and reduce soil bulk density, thereby increasing soil aeration and water retention capacity, solving the problem of soil compaction, and promoting root growth; in addition, chitosan can increase the absorption of water and nutrients by plants, improve fertilizer utilization, and enhance fertilizer efficiency.

[0045] Example 48 The amino acid extract and chitosan extract were prepared according to the method described in Example 44 above.

[0046] Preparation of cellulose extract: Take two portions of straw, wash them to remove impurities, and put the washed straw into 25 portions of a 10% sodium hydroxide solution to remove lignin and hemicellulose. After washing, substance a is obtained. Substance a is put into 25 portions of a 5% dilute hydrochloric acid solution to remove non-cellulose substances. After washing, substance b is obtained. Substance b is placed in an oven and dried at 60℃ for 12 hours, and then ground to obtain a cellulose extract.

[0047] Producing organic foliar fertilizer: S1 Take 8 portions of fresh kelp, wash the fresh kelp with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put the small pieces of kelp A into 12 portions of deionized water, sonicate at 70℃ for 40 minutes, then centrifuge at 8000 rpm, and take the supernatant to obtain kelp extract. S2. Add 5 parts of kelp extract, 4 parts of amino acid extract, 3 parts of chitosan extract, 15 parts of potassium dihydrogen phosphate, and 10 parts of urea to 24 parts of deionized water and mix evenly to obtain mixture B. S3 disperses 1 part of cellulose extract, 2 parts of chelated iron, 3 parts of a mixture of zinc, copper, iron, manganese and molybdenum elements, and 5 parts of polyglutamic acid in 24 parts of deionized water to obtain mixture C; S4 mixes mixtures B and C, stirs at 50°C for 1 hour, adds 3 parts of Bacillus subtilis, and then emulsifies and grinds for 2 hours to obtain organic foliar fertilizer.

[0048] Examples 49-56 The specific differences in the production method and parameter conditions of Example 48 are shown in Table 7.

[0049] Comparative Example 4 The production method and parameters are the same as in Example 48, except that no cellulose extract is added.

[0050] Example 57 Test on the increase in plant leaf thickness Examples 44, 48-56, and Comparative Example 4 were diluted 800 times and sprayed on the leaves weekly. After six months, the leaf thickness was tested and compared with the leaf thickness of the standard sample (without foliar fertilizer). The increase in leaf thickness was calculated. Specific results are as follows: Figure 1 As shown in Table 7.

[0051] Table 7. Tests on the increase in plant leaf thickness in Examples 44, 48-56, and Comparative Example 4. Depend on Figure 1 As shown in Table 7, in Examples 44, 48-56, and Comparative Example 4, the increase in leaf thickness was minimal (only 34.8%) in Comparative Example 4 when no cellulose extract was added; however, the leaf thickness increased significantly when cellulose extract was added. When the amount of straw was varied while the amount of cellulose extract remained constant, the leaf thickness initially increased and then decreased. The largest increase in leaf thickness (41.5%) was observed in Example 49 when the straw amount was 3 parts. When the straw amount was fixed at 3 parts and the cellulose extract amount was varied, the leaf thickness initially increased and then decreased, from 41.5% to 43.1% and then decreased to 41.6%. The largest increase in leaf thickness (43.1%) was observed in Example 54 when the cellulose extract amount was 1.3 parts. This is because cellulose promotes the formation of plant cell walls, thickens leaves, enhances plant structural strength, supports healthy plant growth, provides necessary nutrients, increases organic matter content, promotes plant growth, and enhances fertilizer efficiency.

[0052] Example 58 The amino acid extract, chitosan extract, and cellulose extract were prepared according to the method described in Example 54 above.

[0053] Producing organic foliar fertilizer: S1 Take 8 portions of fresh kelp, wash the fresh kelp with deionized water to obtain washed kelp; then put the washed kelp into a cutter and crush it into small pieces to obtain small pieces of kelp A; put the small pieces of kelp A into 12 portions of deionized water, sonicate at 70℃ for 40 minutes, then centrifuge at 8000 rpm, and take the supernatant to obtain kelp extract. S2. Add 5 parts of kelp extract, 4 parts of amino acid extract, 3 parts of chitosan extract, 15 parts of potassium dihydrogen phosphate, and 10 parts of urea to 24 parts of deionized water and mix evenly to obtain mixture B. S3 disperses 1.3 parts of cellulose extract, 2 parts of chelated iron, 3 parts of a mixture of zinc, copper, iron, manganese and molybdenum elements, and 5 parts of polyglutamic acid in 24 parts of deionized water to obtain mixture C; S4 mixes mixtures B and C, stirs at 52°C for 1 hour, adds 3 parts of Bacillus subtilis, and then emulsifies and grinds for 2 hours to obtain organic foliar fertilizer.

[0054] Examples 59-68 The specific differences in the production method and parameter conditions of Example 58 are shown in Table 8.

[0055] Table 8 Parameter conditions for Examples 54 and 58-68 Example 69 Fertilizer utilization rate test Examples 54 and 58-68 were diluted 800 times with water before being used. The fertilizer utilization rate was calculated as follows: Fertilizer utilization rate (%) = (cumulative nutrient amount of plants treated with fertilizer - cumulative nutrient amount of plants treated without fertilizer) / nutrient input × 100%. The specific results are shown in Table 9.

[0056] Table 9 Fertilizer utilization rate test in Examples 54 and 58-68 Table 9 shows that in Examples 54 and 58-68, when the stirring temperature was changed while the stirring time and emulsification / grinding time remained constant, the fertilizer utilization rate first increased and then decreased, from 78.7% to 81.8% and then decreased to 79.6%. The highest fertilizer utilization rate, 81.8%, was observed in Example 60 when the stirring temperature was 56°C. When the stirring temperature was fixed at 56°C and the stirring time was changed while the emulsification / grinding time remained constant, the fertilizer utilization rate reached its highest point when the stirring time was 2 hours, with Example 63 showing a fertilizer utilization rate of 82.9%. With a fixed stirring temperature of 56°C and a stirring time of 2 hours, fertilizer utilization initially increased and then decreased when the emulsification and grinding time was changed, rising from 82.9% to 84.3% and then decreasing back to 82.3%. When the emulsification and grinding time was 4 hours, the fertilizer utilization rate of Example 66 was the highest, at 84.3%. This is because appropriate stirring temperature and time can promote the chelation between synthetic raw materials, allowing each raw material to exert its maximum benefit. Appropriate emulsification and grinding time can fully grind the foliar fertilizer without damaging its structure, thereby improving the fertilizer utilization rate and promoting plant growth.

Claims

1. A method for producing an organic foliar fertilizer, characterized in that: Includes the following steps: Washed kelp was crushed and placed in a first portion of deionized water, then ultrasonically centrifuged to obtain kelp extract. The kelp extract, amino acid extract, chitosan extract, potassium dihydrogen phosphate, and urea were placed in a second portion of deionized water and mixed to obtain mixture B. Cellulose extract, chelated iron, a mixture of trace elements, and polyglutamic acid were dispersed in the remaining deionized water to obtain mixture C. Mixtures B and C were mixed and stirred, cooled, and then Bacillus subtilis was added. The mixture was emulsified and ground to obtain the organic foliar fertilizer. The amino acid extract was obtained from earthworms via enzymatic hydrolysis. The chitosan extract was obtained from shrimp shells via an acid-base alternation method. The cellulose extract was obtained from straw via an acid-base alternation method.

2. The method for producing an organic foliar fertilizer according to claim 1, characterized in that: The preparation method of the amino acid extract is as follows: take the earthworm, wash it and crush it, add the crushed earthworm and trypsin to deionized water to carry out enzymatic hydrolysis, and centrifuge to obtain the supernatant to obtain the amino acid extract.

3. The method for producing an organic foliar fertilizer according to claim 1, characterized in that: The preparation method of the chitosan extract is as follows: take the shrimp shell and wash it, soak the washed shrimp shell in dilute hydrochloric acid, and wash it to obtain demineralized minerals; put the demineralized minerals into sodium hydroxide solution to remove proteins, and wash them to obtain chitin precursor; put the chitin precursor into sodium hydroxide solution for deacetylation reaction, and wash it to obtain chitosan precursor; dry the chitosan precursor and grind it to obtain the chitosan extract.

4. The method for producing an organic foliar fertilizer according to claim 1, characterized in that: The method for preparing the cellulose extract is as follows: the straw is washed, and the washed straw is placed in sodium hydroxide solution to remove lignin and hemicellulose, and after washing, substance a is obtained; substance a is placed in dilute hydrochloric acid to remove non-cellulose substances, and after washing, substance b is obtained; substance b is dried and ground to obtain the cellulose extract.

5. The method for producing an organic foliar fertilizer according to claim 1, characterized in that: The mixing temperature of mixture B and mixture C is 50℃-60℃, and the time is 1h-3h; the emulsification and grinding time is 2h-6h.

6. An organic foliar fertilizer, characterized in that: The raw materials for the synthesis of the organic foliar fertilizer include kelp extract, amino acid extract, chitosan extract, potassium dihydrogen phosphate, urea, cellulose extract, chelated iron, Bacillus subtilis, a mixture of trace elements, polyglutamic acid, and deionized water; the organic foliar fertilizer is produced by the production method described in any one of claims 1-5.

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