Preparation method and application of a silicon-carbon chelating agent for increasing production

Abstract

The present invention relates to the technical field of fertilizers, and provides a preparation method of a yield-increasing silicon-carbon chelating agent, comprising the following steps: S1. Add water and a silicon-containing organic auxiliary agent to a carbon material and heat to 40-50 °C; S2. Add sodium ethylenediamine di-o-phenylacetate and 2-phosphonobutane-1,2,4-tricarboxylic acid, and heat to 60-80 °C; S3. Continuously add malic acid and vermiculite, cool to 40-50 °C, and centrifuge to obtain the chelating agent. Through the above technical solution, the problem in the related art that the utilization rate of trace elements in the soil by the chelating agent needs to be improved is solved. The chelating agent in the present invention can promote root growth, increase the root surface area, can greatly increase the yield of crops, improve the sweetness of crops, and can also play a role in increasing the VC content.

Description

Technical Field

[0001] The present invention relates to the technical field of agriculture, and specifically, to a preparation method and application of a silicon-carbon chelating agent for increasing production. Background Art

[0002] Chelating agents are chemical substances widely used in fields such as agriculture, medicine, and environmental protection. In the agricultural field, chelating agents can improve the utilization rate of trace elements in the soil, promote plant growth, and increase production. Currently, there are various chelating agent products on the market, but their effects are limited, and there are some problems, such as low solubility, poor stability, high toxicity, etc.

[0003] Today, in agricultural production, trace elements in the soil play a crucial role in the growth and development of plants. However, due to the low content of trace elements in the soil and the difficulty of being absorbed and utilized by plants, plant growth is slow, the yield is low, and the quality deteriorates. Therefore, developing an efficient chelating agent to improve the utilization rate of trace elements in the soil has become a popular research direction in the agricultural field. Summary of the Invention

[0004] The present invention provides a preparation method and application of a silicon-carbon chelating agent for increasing production, which solves the problem that the chelating agent in the related technology needs to be improved in terms of improving the utilization rate of trace elements in the soil.

[0005] The technical solution of the present invention is as follows:

[0006] A preparation method of a silicon-carbon chelating agent for increasing production, comprising the following steps:

[0007] S1. Add water and a silicon-containing organic auxiliary agent to the carbon material and heat to 40 - 50 °C;

[0008] S2. Add sodium ethylenediamine di-o-phenylacetate and 2-phosphonobutane-1,2,4-tricarboxylic acid, and heat to 60 - 80 °C;

[0009] S3. Continuously add malic acid and vermiculite, cool down to 40 - 50 °C, and centrifuge to obtain the chelating agent.

[0010] As a further technical solution, the silicon-containing organic auxiliary agent comprises tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:(2 - 3).

[0011] As a further technical solution, the carbon material comprises herbaceous peat or moss peat.

[0012] As a further technical solution, the mass ratio of the carbon material, water, and the silicon-containing organic auxiliary agent is 1:(2 - 3):(0.2 - 0.3).

[0013] As a further technical solution, the mass ratio of the carbon material, sodium ethylenediamine di(o-phenylacetate), and 2-phosphonobutane-1,2,4-tricarboxylic acid is 1:(0.4 - 0.6):(0.5 - 0.8).

[0014] As a further technical solution, the mass of sodium ethylenediamine di(o-phenylacetate) is less than that of 2-phosphonobutane-1,2,4-tricarboxylic acid.

[0015] As a further technical solution, the mass ratio of the carbon material, malic acid, and vermiculite is 1:(0.1 - 0.2):(0.05 - 0.1).

[0016] As a further technical solution, the preparation method of the silicon-carbon chelating agent for increasing production includes the following steps:

[0017] S1. Add water and a silicon-containing organic auxiliary agent to the carbon material, heat to 40 - 50 °C, and keep stirring for 30 min.

[0018] S2. Add sodium ethylenediamine di(o-phenylacetate) and 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 60 - 80 °C, and keep stirring for 1 - 2 h.

[0019] S3. Continuously add malic acid and vermiculite, cool down to 40 - 50 °C, keep stirring for 1 - 2 h, and dry to obtain the chelating agent.

[0020] The present invention also provides a silicon-carbon chelating agent for increasing production, which is obtained according to the above preparation method.

[0021] The present invention also provides the application of the silicon-carbon chelating agent for increasing production in fertilizers.

[0022] The working principle and beneficial effects of the present invention are as follows:

[0023] 1. The chelating agent in the present invention can promote root growth, increase the root surface area, thereby increasing the absorption of nutrient elements by plants, improving the fertilizer utilization rate, and can also improve the soil structure and quality, increase soil fertility, improve the soil water retention capacity and air permeability, and promote plant growth. When the chelating agent of the present invention is applied to crops together with conventional fertilizers, it can significantly increase the yield of agricultural crops, improve the sweetness of crops, and also play a role in increasing the VC content.

[0024] 2. The present invention recovers and extracts peat by using EDDHA-Na and PBTCA in combination with a silicon-containing organic auxiliary agent. EDDHA-Na and PBTCA contain multiple hydrophilic groups, which can form a stable cyclic network three-dimensional structure with metal ions, extract organic matter and trace elements in peat, supplement soil humic acid, increase soil vitality, and improve the quality and taste of crop fruits. Moreover, due to the relatively large dosage of EDDHA-Na and PBTCA, they can also be used to chelate metal elements in fertilizers, improving fertilizer utilization efficiency.

[0025] 3. The silicon-containing organic auxiliary agent in the present invention can not only promote the extraction of beneficial components in peat by EDDHA-Na and PBTCA, but the solubility of EDDHA-Na is poor. The present invention also improves its solubility in water through two levels of the silicon-containing auxiliary agent and PBTCA to ensure the diffusibility during application. Detailed implementation mode

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present invention.

[0027] Embodiment 1

[0028] A preparation method of a yield-increasing silicon-carbon chelating agent:

[0029] S1. Add 200 parts of water and 20 parts of a silicon-containing organic auxiliary agent to 100 parts of bryophyte peat, heat to 40 °C, and keep stirring for 30 min; the silicon-containing organic auxiliary agent is tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:2.

[0030] S2. Add 40 parts of ethylenediamine di-o-phenylacetic acid sodium and 50 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 60 °C, and keep stirring for 2 h.

[0031] S3. Continue to add 10 parts of malic acid and 5 parts of vermiculite, cool down to 40 °C, keep stirring for 2 h, centrifuge, and collect the liquid and dry to obtain the chelating agent.

[0032] Embodiment 2

[0033] A preparation method of a yield-increasing silicon-carbon chelating agent:

[0034] S1. Add 300 parts of water and 30 parts of silicon-containing organic auxiliary agent to 100 parts of bryophyte peat, heat to 50 °C, and keep stirring for 30 min; the silicon-containing organic auxiliary agent is tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:3.

[0035] S2. Add 60 parts of ethylenediamine di(o-phenylacetic acid) sodium and 80 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 80 °C, and keep stirring for 1.5 h.

[0036] S3. Continuously add 20 parts of malic acid and 10 parts of vermiculite, cool down to 50 °C, keep stirring for 1 h, centrifuge, and collect the liquid and dry it to obtain the chelating agent.

[0037] Example 3

[0038] A preparation method of a yield-increasing silicon-carbon chelating agent:

[0039] S1. Add 250 parts of water and 25 parts of silicon-containing organic auxiliary agent to 100 parts of bryophyte peat, heat to 45 °C, and keep stirring for 30 min; the silicon-containing organic auxiliary agent is tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:3.

[0040] S2. Add 50 parts of ethylenediamine di(o-phenylacetic acid) sodium and 60 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 80 °C, and keep stirring for 1 h.

[0041] S3. Continuously add 15 parts of malic acid and 8 parts of vermiculite, cool down to 50 °C, keep stirring for 1 h, centrifuge, and collect the liquid and dry it to obtain the chelating agent.

[0042] Example 4

[0043] A preparation method of a yield-increasing silicon-carbon chelating agent:

[0044] S1. Add 200 parts of water and 20 parts of silicon-containing organic auxiliary agent to 100 parts of bryophyte peat, heat to 40 °C, and keep stirring for 30 min; the silicon-containing organic auxiliary agent is tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:2.

[0045] S2. Add 45 parts of ethylenediamine di(o-phenylacetic acid) sodium and 45 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 60 °C, and keep stirring for 2 h.

[0046] S3. Continuously add 10 parts of malic acid and 5 parts of vermiculite, cool down to 40 °C, keep stirring for 2 h, centrifuge, and collect the liquid and dry it to obtain the chelating agent.

[0047] Comparative Example 1

[0048] A preparation method of a yield-increasing silicon-carbon chelating agent:

[0049] S1. Add 200 parts of water, 40 parts of ethylenediamine di-o-phenylacetate sodium, and 50 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid to 100 parts of bryophyte peat, heat to 60 °C, and keep stirring for 2 h;

[0050] S2. Continuously add 10 parts of malic acid and 5 parts of vermiculite, cool down to 40 °C, keep stirring for 2 h, centrifuge, and collect the liquid and dry it to obtain the chelating agent.

[0051] Comparative Example 2

[0052] Compared with Example 1, the silicon-containing organic auxiliary is tetra(2-hydroxyethoxy)silane, and the others are the same as in Example 1.

[0053] Comparative Example 3

[0054] Compared with Example 1, the silicon-containing organic auxiliary is silane coupling agent KH-570, and the others are the same as in Example 1.

[0055] Test Example

[0056] Mix the chelating agents prepared in the examples and comparative examples with the following components to prepare fertilizers:

[0057] 10 parts of chelating agent, 20 parts of triple superphosphate, 50 parts of urea, 12 parts of ammonium sulfate, 10 parts of fulvic acid, 18 parts of potassium chloride or potassium sulfate.

[0058] In 2022, 7 groups of test fields were selected in Quzhou County, Handan City to plant pakchoi. The planting conditions of each experimental field were the same. Among them, the test fields 1-7 were respectively applied with the fertilizers prepared in Examples 1-4 and Comparative Examples 1-3 of the present invention, without fertilization. The dosage per mu was 30 kg, and it was diluted 100 times with water and then applied to the soil.

[0059] After maturity, test the VC content and soluble sugar content: Randomly select 100 pakchoi leaves from each test field and calculate the average value.

[0060] Table 1 Results of planting pakchoi in test fields

[0061]

[0062] The chelating agent obtained by the present invention is used in fertilizers to promote absorption, which can significantly increase the crop yield, increase the sugar content, and improve the VC content of crops. Among them, compared with Example 1, the yield of Example 4 decreased, but it was still higher than that of the comparative examples. No silicon-containing auxiliary was added in Comparative Example 1, and only one silicon-containing auxiliary was added in Comparative Examples 2 and 3. The use effects of the obtained chelating agents were all inferior to that of Example 1. The present invention found that the simultaneous use of two auxiliaries, tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570, can maximize the fertilizer utilization rate.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A preparation method of a silicon-carbon chelating agent for increasing production, characterized in that, It includes the following steps: S1. Add water and a silicon-containing organic auxiliary agent to the carbon material and heat to 40 - 50 °C; S2. Add sodium ethylenediamine di-o-phenylacetate and 2-phosphonobutane-1,2,4-tricarboxylic acid, and heat to 60 - 80 °C; S3. Continuously add malic acid and vermiculite, cool down to 40 - 50 °C, and centrifuge to obtain a chelating agent; The silicon-containing organic auxiliary agent includes tetra(2-hydroxyethoxy)silane and silane coupling agent KH-570 with a mass ratio of 1:(2 - 3); The carbon material includes herbaceous peat or moss peat.

2. The preparation method of the silicon-carbon chelating agent for increasing production according to claim 1, characterized in that The mass ratio of the carbon material, water, and the silicon-containing organic auxiliary agent is 1:(2 - 3):(0.2 - 0.3).

3. The preparation method of the silicon-carbon chelating agent for increasing production according to claim 1, characterized in that, The mass ratio of the carbon material, sodium ethylenediamine di-o-phenylacetate, and 2-phosphonobutane-1,2,4-tricarboxylic acid is 1:(0.4 - 0.6):(0.5 - 0.8).

4. The preparation method of the silicon-carbon chelating agent for increasing production according to claim 3, characterized in that, The mass of sodium ethylenediamine di-o-phenylacetate is less than that of 2-phosphonobutane-1,2,4-tricarboxylic acid.

5. The preparation method of the silicon-carbon chelating agent for increasing production according to claim 1, characterized in that, The mass ratio of the carbon material to malic acid and vermiculite is 1:(0.1 - 0.2):(0.05 - 0.1).

6. The preparation method of the silicon-carbon chelating agent for increasing production according to claim 1, characterized in that It includes the following steps: S1. Add water and a silicon-containing organic auxiliary agent to the carbon material, heat to 40 - 50 °C, and keep stirring for 30 min; S2. Add sodium ethylenediamine di-o-phenylacetate and 2-phosphonobutane-1,2,4-tricarboxylic acid, heat to 60 - 80 °C, and keep stirring for 1 - 2 h; S3. Continuously add malic acid and vermiculite, cool down to 40 - 50 °C, keep stirring for 1 - 2 h, and dry to obtain a chelating agent.

7. A silicon-carbon chelating agent for increasing production, characterized in that, Obtained according to the preparation method described in any one of claims 1 - 6.

8. Application of the silicon-carbon chelating agent for yield increase as described in claim 7 in fertilizers.

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