A water-soluble organic fertilizer that rapidly releases nutrients and its preparation method

Abstract

This application discloses a water-soluble organic fertilizer that rapidly releases nutrients and its preparation method, relating to the field of fertilizer preparation technology. On one hand, the water-soluble organic fertilizer of this application, by weight, comprises the following raw materials: 40-70 parts of basic organic fertilizer, 6-10 parts of sodium carboxymethyl cellulose, 25-35 parts of amino acid chelated fertilizer, and 10-20 parts of organosilicon hollow microspheres. On the other hand, this application also provides a method for preparing the above-mentioned water-soluble organic fertilizer that rapidly releases nutrients. The advantage of this application is that it provides an organic fertilizer with high solubility in water and the ability to rapidly release nutrients, which can be well absorbed and utilized by plants.

Description

Technical Field

[0001] This application relates to the field of fertilizer preparation technology, and in particular to a water-soluble organic fertilizer that rapidly releases nutrients and its preparation method. Background Technology

[0002] Water-soluble fertilizers are multi-element compound fertilizers that dissolve rapidly in water, making them easier for crops to absorb. Compared to other types of fertilizers, water-soluble fertilizers can quickly provide the nutrients needed for crop growth. Furthermore, because the nutrients in water-soluble fertilizers are in a dissolved state, crops can more easily regulate the absorption ratio and balance of various nutrients during growth. Therefore, the research and development of water-soluble fertilizers is particularly important. However, in current technology, most water-soluble fertilizers are primarily inorganic, with relatively little application of organic fertilizers, and their water solubility is often unsatisfactory.

[0003] Therefore, there is an urgent need for an organic fertilizer that has high water solubility and can quickly release nutrients to solve the problems existing in the current technology. Summary of the Invention

[0004] In order to solve at least one of the above-mentioned technical problems and to develop an organic fertilizer with high solubility in water and the ability to rapidly release nutrients, this application provides a water-soluble organic fertilizer that rapidly releases nutrients and its preparation method.

[0005] On the one hand, the water-soluble organic fertilizer that provides rapid nutrient release in this application includes the following raw materials by weight: 40-70 parts of basic organic fertilizer, 6-10 parts of sodium carboxymethyl cellulose, 25-35 parts of amino acid chelated fertilizer, and 10-20 parts of organosilicon hollow microspheres.

[0006] By adopting the above technical solution, the water-soluble organic fertilizer that rapidly releases nutrients provided in this application uses basic organic fertilizer as a base material and introduces sodium hydroxymethyl cellulose and amino acid chelate fertilizer into it. Sodium hydroxymethyl cellulose has good dispersibility and can disperse the particles of basic organic fertilizer in water. At the same time, sodium hydroxymethyl cellulose can also form hydrogen bonds with water molecules, thereby forming a stable hydration structure, making it easier for the basic organic fertilizer to be surrounded by water molecules and thus dissolve. The amino acids in the amino acid chelate fertilizer are an effective dispersant, which can help disperse and decompose the particles in the basic organic fertilizer. Introducing sodium hydroxymethyl cellulose and amino acid chelate fertilizer together into the basic organic fertilizer can make the dispersing effect between sodium hydroxymethyl cellulose and amino acid chelate fertilizer synergistic, which can improve water solubility and make the basic organic fertilizer easier to dissolve.

[0007] Furthermore, the water-soluble organic fertilizer for rapid nutrient release provided in this application further incorporates organosilicon hollow microspheres. These microspheres possess a large specific surface area and pore structure. When the basic organic fertilizer comes into contact with the organosilicon hollow microspheres, the pore structure of the microspheres can adsorb and store the moisture and nutrients in the basic organic fertilizer. When moisture enters the pores of the microspheres, the moisture in the basic organic fertilizer exchanges and diffuses with the moisture within the pores, further increasing the specific surface area of ​​the basic organic fertilizer in contact with moisture, thereby promoting the release of moisture and nutrients from the basic organic fertilizer to the external environment. Simultaneously, due to the pore structure and adsorption properties of the organosilicon hollow microspheres, the moisture and nutrients in the basic organic fertilizer can be released more quickly, improving the dissolution and release of the water-soluble organic fertilizer for rapid nutrient release provided in this application.

[0008] Optional, by weight, the following raw materials are included: 50-60 parts of basic organic fertilizer, 7-9 parts of sodium carboxymethyl cellulose, 28-32 parts of amino acid chelated fertilizer, and 14-16 parts of organosilicon hollow microspheres.

[0009] By adopting the above technical solution, the weight proportions of raw materials used in the water-soluble organic fertilizer that rapidly releases nutrients provided in this application are further limited, which can further improve the solubility of the water-soluble organic fertilizer that rapidly releases nutrients provided in this application in water.

[0010] Optionally, the basic organic fertilizer includes straw compost and livestock and poultry manure, and the mass ratio between the straw compost and the livestock and poultry manure is (5-8):(2-4).

[0011] By adopting the above technical solution, this application uses a basic organic fertilizer composed of a specific ratio of well-rotted compost and livestock and poultry manure, which can improve the solubility of water-soluble organic fertilizer that releases nutrients quickly in water, while enriching the nutrients in the water-soluble organic fertilizer that releases nutrients quickly.

[0012] Optionally, the amino acid chelated fertilizer comprises amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese, and amino acid chelated iron in a mass ratio of (2-4):(2-4):(1-2):(6-8).

[0013] By adopting the above technical solution, it is possible to provide plants with the trace elements necessary for growth when using the water-soluble organic fertilizer that rapidly releases nutrients provided in this application.

[0014] Optionally, the average particle size of the organosilicon hollow microspheres is 0.1 to 3 mm.

[0015] By adopting the above technical solution, this application uses organosilicon hollow microspheres with a specific particle size, which can further reduce the production cost of organosilicon hollow microspheres while ensuring water solubility.

[0016] Optionally, the organosilicon hollow microspheres are prepared from the following raw materials: silicate and starch, wherein the mass ratio between the silicate and the starch is 1:(1-3).

[0017] By adopting the above technical solution, the raw materials used in the organosilicon hollow microspheres of this application are common products on the market, which can further reduce the production cost of organosilicon hollow microspheres.

[0018] Secondly, this application provides a method for preparing the aforementioned water-soluble organic fertilizer that rapidly releases nutrients, comprising the following steps:

[0019] S1. Provide basic organic fertilizer and sodium hydroxymethyl cellulose, and mix the basic organic fertilizer and sodium hydroxymethyl cellulose together and stir to obtain a premix;

[0020] S2. Provide amino acid chelated fertilizer and organosilicon hollow microspheres, and add the amino acid chelated fertilizer and the amino acid chelated fertilizer to the obtained premix, stir, and obtain the water-soluble organic fertilizer that rapidly releases nutrients.

[0021] By adopting the above technical solution, it is relatively easy to produce water-soluble organic fertilizers that have high solubility in water and release nutrients quickly.

[0022] Optionally, in both step S1 and step S2, the stirring speed is 150-250 rpm and the stirring time is 1-2 h.

[0023] Optionally, in step S2, the organosilicon hollow microspheres are prepared by the following method: mixing silicate and starch to obtain a mixture, and then heating, cooling, and grinding the mixture.

[0024] By adopting the above technical solution, organosilicon hollow microspheres can be prepared relatively easily, and production costs can be reduced.

[0025] Optionally, the heating conditions are: heating temperature of 300-600℃ and heating time of 8-12h.

[0026] By adopting the above technical solution, it is possible to further ensure that silicates and starch react and pyrolyze fully to form a hollow structure.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The water-soluble organic fertilizer that rapidly releases nutrients provided in this application uses basic organic fertilizer as a base material and simultaneously introduces sodium hydroxymethyl cellulose and amino acid chelate fertilizer into it. This allows the dispersion effect between sodium hydroxymethyl cellulose and amino acid chelate fertilizer to work synergistically, thereby improving the solubility of the water-soluble organic fertilizer that rapidly releases nutrients in water, making the water-soluble organic fertilizer that rapidly releases nutrients easier to dissolve.

[0029] 2. The water-soluble organic fertilizer for rapid nutrient release provided in this application further incorporates organosilicon hollow microspheres. When the basic organic fertilizer comes into contact with the organosilicon hollow microspheres, the pore structure of the organosilicon hollow microspheres can adsorb and store the water and nutrients in the basic organic fertilizer. This allows the water entering the pores of the organosilicon hollow microspheres to exchange and diffuse with the water in the basic organic fertilizer, and also increases the specific surface area of ​​the basic organic fertilizer in contact with water. This promotes the release of water and nutrients in the basic organic fertilizer to the external environment, thereby improving the dissolution and release of the water-soluble organic fertilizer for rapid nutrient release provided in this application.

[0030] 3. The method for preparing the water-soluble organic fertilizer that rapidly releases nutrients provided in this application is simple to operate and can easily produce water-soluble organic fertilizer that rapidly releases nutrients with high solubility in water. Detailed Implementation

[0031] The present application will be further described in detail below with reference to embodiments and comparative examples.

[0032] This application designs a water-soluble organic fertilizer that rapidly releases nutrients, comprising the following raw materials by weight: 40-70 parts of basic organic fertilizer, 6-10 parts of sodium carboxymethyl cellulose, 25-35 parts of amino acid chelated fertilizer, and 10-20 parts of organosilicon hollow microspheres.

[0033] The method for preparing the water-soluble organic fertilizer that rapidly releases nutrients according to this application includes the following steps:

[0034] S1. Provide basic organic fertilizer and sodium hydroxymethyl cellulose, and mix the basic organic fertilizer and sodium hydroxymethyl cellulose together and stir to obtain a premix;

[0035] S2. Provide amino acid chelated fertilizer and organosilicon hollow microspheres, and add the amino acid chelated fertilizer and the amino acid chelated fertilizer to the obtained premix, stir, and obtain the water-soluble organic fertilizer that rapidly releases nutrients. Specific Implementation

[0037] Unless otherwise specified, all raw materials used in the embodiments and comparative examples of this application are commercially available products:

[0038] Basic organic fertilizers: straw compost, moisture content ≤3%; livestock and poultry manure, moisture content ≤5%;

[0039] Sodium carboxymethyl cellulose: Hefei Hongrui Biotechnology Co., Ltd., purity 99%;

[0040] Amino acid chelated fertilizer: amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese, and amino acid chelated iron, Wuhan Rongcan Biotechnology Co., Ltd.

[0041] Organosilicon hollow microspheres: prepared from silicate and starch; silicate, selected from sodium silicate, Hubei Xinrunde Chemical Co., Ltd., purity 99%; starch, selected from pea starch, Nanjing Songguan Biotechnology Co., Ltd., purity 99%.

[0042] In the experimental testing of the water-soluble organic fertilizer with rapid nutrient release provided in the embodiments and comparative examples of this application, 10 kg of the water-soluble organic fertilizer with rapid nutrient release was taken and placed in 20 L of deionized water. The mixture was stirred, the dissolution was observed, and the conductivity was measured. The method is as follows:

[0043] 1. Dissolution: Observe the dispersion of water-soluble organic fertilizer that rapidly releases nutrients during stirring, and observe the sediment after standing.

[0044] 2. Conductivity: After standing, the conductivity of the mixture is measured.

[0045] The following are preparation examples 1 to 4 of this application, which respectively provide a method for preparing a water-soluble organic fertilizer that rapidly releases nutrients.

[0046] Preparation Example 1

[0047] S1. Provide basic organic fertilizer and sodium carboxymethyl cellulose, and mix and stir the basic organic fertilizer and sodium carboxymethyl cellulose to obtain a premix; wherein, the stirring speed is 150 rpm and the stirring time is 2 hours;

[0048] S2. Provide amino acid chelated fertilizer and organosilicon hollow microspheres, and add the amino acid chelated fertilizer and the amino acid chelated fertilizer to the obtained premix in sequence, stir, and obtain a water-soluble organic fertilizer that releases nutrients quickly; wherein, the stirring speed is 150 rpm and the stirring time is 2 hours.

[0049] Specifically, in step S2, the organosilicon hollow microspheres are prepared by the following method: silicate and starch are mixed in a mass ratio of 1:1 to obtain a mixture, and the mixture is heated, cooled, and ground; wherein, the heating temperature is 300℃ and the heating time is 12h.

[0050] Preparation Example 2

[0051] Based on Preparation Example 1, the difference between this preparation example and Preparation Example 1 is that in steps S1 and S2, the stirring speed is 200 rpm and the stirring time is 1.5 h; the remaining steps, conditions and parameters are the same as in Preparation Example 1.

[0052] Preparation Example 3

[0053] Based on Preparation Example 1, the difference between this preparation example and Preparation Example 1 is that in steps S1 and S2, the stirring speed is 250 rpm and the stirring time is 1 h; the remaining steps, conditions and parameters are the same as in Preparation Example 1.

[0054] Preparation Example 4

[0055] Based on Preparation Example 1, the difference between this preparation example and Preparation Example 1 is that: the basic organic fertilizer, sodium carboxymethyl cellulose, amino acid chelated fertilizer and organosilicon hollow microspheres are directly mixed and stirred at a stirring speed of 150 rpm for 2 hours to obtain a water-soluble organic fertilizer that releases nutrients quickly; the remaining steps, conditions and parameters are the same as in Preparation Example 1.

[0056] The following are Examples 1 to 4 of this application, which respectively provide a water-soluble organic fertilizer that rapidly releases nutrients.

[0057] Examples 1-4 were prepared using the methods provided in Examples 1-4 for preparing water-soluble organic fertilizers that rapidly release nutrients. In Examples 1-4, the water-soluble organic fertilizers that rapidly release nutrients included the following raw materials: 40 kg of basic organic fertilizer, 6 kg of sodium carboxymethyl cellulose, 25 kg of amino acid chelated fertilizer, and 10 kg of organosilicon hollow microspheres. The basic organic fertilizer included straw compost and livestock manure in a mass ratio of 5:2, and the amino acid chelated fertilizer included amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese, and amino acid chelated iron in a mass ratio of 2:2:1:6. The average particle size of the screened organosilicon hollow microspheres was 0.1 mm.

[0058] Experimental tests were conducted on the water-soluble organic fertilizers that rapidly release nutrients provided in Examples 1-4. The test results are shown in Table 1.

[0059] Table 1 Summary of test results for Examples 1-4

[0060] Solubility Electrical conductivity (mS / cm) Example 1 It disperses completely in deionized water and produces little precipitate after settling. 0.43 Example 2 It disperses completely in deionized water and produces little precipitate after settling. 0.46 Example 3 It disperses completely in deionized water and produces little precipitate after settling. 0.44 Example 4 It disperses completely in deionized water, but produces a significant amount of precipitate after settling. 0.25

[0061] Referring to Table 1, the results show that the solubility of Examples 1-3 is better than that of Example 4, and the conductivity of Examples 1-3 is higher than that of Example 4. This demonstrates the superiority of the preparation method using specific steps to prepare water-soluble organic fertilizers that rapidly release nutrients. Combining the test results of Examples 1-3, the solubility of the water-soluble organic fertilizers that rapidly release nutrients provided by Examples 1-3 is not significantly different. However, Example 2 has a higher conductivity, demonstrating the superiority of using a specific stirring speed and stirring time.

[0062] The following are preparation examples 5 to 6 of this application, which respectively provide a method for preparing a water-soluble organic fertilizer that rapidly releases nutrients.

[0063] Preparation Example 5

[0064] Based on Preparation Example 2, the difference between this preparation example and Preparation Example 2 is that in step S2, when preparing organosilicon hollow microspheres, the heating temperature is 450℃ and the heating time is 10h; the remaining steps, conditions and parameters are the same as in Preparation Example 2.

[0065] Preparation Example 6

[0066] Based on Preparation Example 2, the difference between this preparation example and Preparation Example 2 is that in step S2, when preparing organosilicon hollow microspheres, the heating temperature is 600℃ and the heating time is 8h; the remaining steps, conditions and parameters are the same as in Preparation Example 2.

[0067] The following are Examples 5 to 6 of this application, which respectively provide a water-soluble organic fertilizer that rapidly releases nutrients.

[0068] Examples 5 and 6 were prepared using the same method as the water-soluble organic fertilizer for rapid nutrient release provided in Examples 5 and 6. Furthermore, in Examples 5 and 6, the raw materials and their quantities used in the water-soluble organic fertilizer for rapid nutrient release were consistent with those used in the water-soluble organic fertilizer for rapid nutrient release provided in Example 2.

[0069] Experimental tests were conducted on the water-soluble organic fertilizers that rapidly release nutrients provided in Examples 5 and 6. The test results are shown in Table 2.

[0070] Table 2 Summary of test results for Examples 5-6

[0071] Solubility Electrical conductivity (mS / cm) Example 5 It disperses completely in deionized water and produces little precipitate after settling. 0.51 Example 6 It disperses completely in deionized water and produces little precipitate after settling. 0.48

[0072] Referring to Table 2, the results show that the solubility of Examples 5-6 is good, and the conductivity is between 0.45 and 0.55 mS / cm. Combining the test results of Examples 2 and Examples 5-6, the solubility of the water-soluble organic fertilizers providing rapid nutrient release from Examples 2 and Examples 5-6 is not significantly different. However, Example 5 has a higher conductivity, demonstrating the superiority of using a specific heating temperature and time.

[0073] The following are preparation examples 7-8 of this application, which respectively provide a method for preparing a water-soluble organic fertilizer that rapidly releases nutrients.

[0074] Preparation Example 7

[0075] Based on Preparation Example 5, the difference between this Preparation Example and Preparation Example 5 is that in step S2, when preparing organosilicon hollow microspheres, silicate and starch are mixed in a mass ratio of 1:2; the remaining steps, conditions and parameters are the same as in Preparation Example 5.

[0076] Preparation Example 8

[0077] Based on Preparation Example 5, the difference between this Preparation Example and Preparation Example 5 is that in step S2, when preparing organosilicon hollow microspheres, silicate and starch are mixed in a mass ratio of 1:3; the remaining steps, conditions and parameters are the same as in Preparation Example 5.

[0078] The following are Examples 7-8 of this application, which respectively provide a water-soluble organic fertilizer that rapidly releases nutrients.

[0079] Examples 7-8 were prepared using the same method as the water-soluble organic fertilizer for rapid nutrient release provided in Examples 7-8. Furthermore, in Examples 7-8, the raw materials and their quality were consistent with those used in the water-soluble organic fertilizer for rapid nutrient release provided in Example 5.

[0080] Experimental tests were conducted on the water-soluble organic fertilizers that rapidly release nutrients provided in Examples 7 and 8. The test results are shown in Table 3.

[0081] Table 3 Summary of test results for Examples 7-8

[0082] Solubility Electrical conductivity (mS / cm) Example 7 It disperses completely in deionized water and produces little precipitate after settling. 0.55 Example 8 It disperses completely in deionized water and produces little precipitate after settling. 0.52

[0083] Referring to Table 3, the results show that the solubility of Examples 7-8 is good, and the conductivity is between 0.50 and 0.55 mS / cm. Combining the test results of Examples 5 and Examples 7-8, the solubility of the water-soluble organic fertilizers providing rapid nutrient release from Examples 5 and 7-8 is not significantly different. However, Example 7 has a higher conductivity, demonstrating the superiority of the organosilicon hollow microspheres prepared using a specific mass ratio of silicate and starch.

[0084] The following are Examples 9-12 and Comparative Examples 1-4 of this application. Examples 9-12 and Comparative Examples 1-4 each provide a water-soluble organic fertilizer that rapidly releases nutrients.

[0085] Based on Example 7, Examples 9-12 and Comparative Examples 1-4 differ from Example 7 in that the raw material composition is different (see Table 4); the remaining steps, conditions and parameters are the same as in Example 7.

[0086] Table 4. Raw material composition of Examples 9-12 and Comparative Examples 1-4

[0087]

[0088]

[0089] Experimental tests were conducted on the water-soluble organic fertilizers that provide rapid nutrient release provided in Examples 9-12 and Comparative Examples 1-4. The test results are shown in Table 5.

[0090] Table 5 Summary of test results for Examples 9-12 and Comparative Examples 1-4

[0091] Solubility Electrical conductivity (mS / cm) Example 9 It disperses completely in deionized water and produces little precipitate after settling. 0.54 Example 10 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.59 Example 11 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.57 Example 12 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.60 Comparative Example 1 It tends to clump in deionized water, and a lot of precipitate forms after standing. 0.23 Comparative Example 2 It tends to clump in deionized water, and a lot of precipitate forms after standing. 0.26 Comparative Example 3 It tends to clump together in deionized water, and a lot of precipitate forms after standing. 0.21 Comparative Example 4 It tends to clump together in deionized water, and a lot of precipitate forms after standing. 0.13

[0092] Referring to Table 5, the results show that the solubility of Examples 9-12 is superior to that of Comparative Examples 1-4, and the conductivity of Examples 9-12 is significantly higher than that of Comparative Examples 1-4, thus demonstrating the superiority of simultaneously using sodium carboxymethyl cellulose, amino acid chelated fertilizer, and organosilicon hollow microspheres. Combining the test results of Examples 7 and Examples 9-12, it is clear that Examples 10-12 exhibit even better solubility and higher conductivity, demonstrating the superiority of using raw materials within a specific range to prepare water-soluble organic fertilizers that rapidly release nutrients.

[0093] Example 13

[0094] Based on Example 12, the difference between this example and Example 12 is that the basic organic fertilizer includes straw compost and livestock manure in a mass ratio of 8:3; the remaining steps, conditions and parameters are the same as in Example 12.

[0095] Example 14

[0096] Based on Example 12, the difference between this example and Example 12 is that the basic organic fertilizer includes straw compost and livestock manure in a mass ratio of 7:4; the remaining steps, conditions and parameters are the same as in Example 12.

[0097] Example 15

[0098] Based on Example 12, the difference between this example and Example 12 is that the amino acid chelated fertilizer includes amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese and amino acid chelated iron in a mass ratio of 4:4:1.5:7; the remaining steps, conditions and parameters are the same as in Example 12.

[0099] Example 16

[0100] Based on Example 12, the difference between this example and Example 12 is that the amino acid chelated fertilizer includes amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese and amino acid chelated iron in a mass ratio of 3:3:2:8; the remaining steps, conditions and parameters are the same as in Example 12.

[0101] Example 17

[0102] Based on Example 12, the difference between this example and Example 12 is that the particle size of the screened organosilicon hollow microspheres is 1.5 mm; the remaining steps, conditions and parameters are the same as in Example 12.

[0103] Example 18

[0104] Based on Example 12, the difference between this example and Example 12 is that the average particle size of the screened organosilicon hollow microspheres is 3 mm; the remaining steps, conditions and parameters are the same as in Example 12.

[0105] Example 19

[0106] Based on Example 12, the difference between this example and Example 12 is that the average particle size of the screened organosilicon hollow microspheres is 0.05 mm; the remaining steps, conditions and parameters are the same as in Example 12.

[0107] Example 20

[0108] Based on Example 12, the difference between this example and Example 12 is that the particle size of the screened organosilicon hollow microspheres is 5 mm; the remaining steps, conditions and parameters are the same as in Example 12.

[0109] Experimental tests were conducted on the water-soluble organic fertilizers that rapidly release nutrients provided in Examples 13-20. The test results are shown in Table 6.

[0110] Table 6 Summary of test results for Examples 13-20

[0111] Solubility Electrical conductivity (mS / cm) Example 13 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.63 Example 14 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.59 Example 15 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.57 Example 16 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.62 Example 17 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.58 Example 18 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.57 Example 19 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.61 Example 20 It disperses completely in deionized water, and leaves very little precipitate after standing. 0.55

[0112] Referring to Table 6, the results show that the solubility of Examples 13-20 is good, and the conductivity is between 0.55 and 0.64 mS / cm. Combining the test results of Examples 12 and 13-16, the solubility and conductivity of the water-soluble organic fertilizers providing rapid nutrient release from Examples 12 and 13-16 are not significantly different, demonstrating the feasibility of using different mass ratios of basic organic fertilizer and amino acid chelated fertilizer. Combining the test results of Examples 12 and 17-20, the solubility of the water-soluble organic fertilizers providing rapid nutrient release from Examples 12 and 17-20 is not significantly different. However, the conductivity of Example 20 is lower than that of Examples 17-19, and the conductivity of Example 19 is not significantly different from that of Examples 12 and 17-18, demonstrating the superiority of using organosilicon hollow microspheres within a specific particle size range.

[0113] In summary, the water-soluble organic fertilizer that rapidly releases nutrients provided in this application has good solubility in water.

[0114] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water-soluble organic fertilizer that rapidly releases nutrients, characterized in that, The ingredients, by weight, include the following: 40-70 parts of basic organic fertilizer, 6-10 parts of sodium carboxymethyl cellulose, 25-35 parts of amino acid chelated fertilizer, and 10-20 parts of organosilicon hollow microspheres. The amino acid chelated fertilizer comprises amino acid chelated zinc, amino acid chelated copper, amino acid chelated manganese, and amino acid chelated iron in a mass ratio of (2-4):(2-4):(1-2):(6-8). The basic organic fertilizer includes straw compost and livestock and poultry manure, and the mass ratio of the straw compost to the livestock and poultry manure is (5-8):(2-4). The preparation method of the water-soluble organic fertilizer that rapidly releases nutrients is as follows: S1. Provide basic organic fertilizer and sodium hydroxymethyl cellulose, and mix the basic organic fertilizer and sodium hydroxymethyl cellulose together and stir to obtain a premix; S2. Provide amino acid chelated fertilizer and organosilicon hollow microspheres, and add the amino acid chelated fertilizer and the organosilicon hollow microspheres to the obtained premix, stir, and obtain the water-soluble organic fertilizer that rapidly releases nutrients. In step S2, the organosilicon hollow microspheres are prepared by the following method: mixing silicate and starch to obtain a mixture, and then heating, cooling, and grinding the mixture. The conditions for the heat treatment are: heating temperature of 300-600℃ and heating time of 8-12h.

2. The water-soluble organic fertilizer for rapid nutrient release according to claim 1, characterized in that, By weight, it includes the following raw materials: 50-60 parts of basic organic fertilizer, 7-9 parts of sodium carboxymethyl cellulose, 28-32 parts of amino acid chelated fertilizer, and 14-16 parts of organosilicon hollow microspheres.

3. The water-soluble organic fertilizer for rapid nutrient release according to claim 1, characterized in that, The average particle size of the organosilicon hollow microspheres is 0.1–3 mm.

4. The water-soluble organic fertilizer for rapid nutrient release according to claim 1, characterized in that, The organosilicon hollow microspheres are prepared from the following raw materials: silicate and starch, and the mass ratio between the silicate and the starch is 1:(1-3).

5. The water-soluble organic fertilizer for rapid nutrient release according to claim 1, characterized in that, In both steps S1 and S2, the stirring speed is 150-250 rpm and the stirring time is 1-2 hours.

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