Nutrient soil for improving soil organic matter and preparation method thereof

Abstract

The present application relates to the technical field of nutrient soil, and proposes a nutrient soil for improving soil organic matter and a preparation method thereof.The nutrient soil comprises the following components in parts by weight: coal gangue 100-180 parts, thickening agent 12-15 parts, binding agent 5-7 parts, vermiculite 2-4 parts, dispersing agent 1-2 parts, thiophanate-methyl 1-3 parts, and fungicide 1-2 parts.Through the above technical solution, the problem of instability of the nutrient soil in the prior art is solved, and the seed germination time is shortened.

Description

Technical Field

[0001] This invention relates to the field of nutrient soil technology, specifically to a nutrient soil for improving soil organic matter and its preparation method. Background Technology

[0002] Coal gangue, a solid waste generated during coal mining and washing, not only wastes land resources when stockpiled in large quantities, but also poses serious environmental hazards such as spontaneous combustion, rain damage, and mudification. However, from a resource perspective, coal gangue is a valuable secondary resource.

[0003] The extensive use of chemical fertilizers leads to the continuous accumulation of salt in the soil, resulting in soil salinization. This also allows certain pathogens to multiply year after year, accumulating in large quantities in the soil and creating diseased soil. Mild effects include impaired seed germination and seedling emergence, hindered nutrient absorption, and poor crop growth; severe effects include physiological drought and impaired nutrient absorption.

[0004] However, organic nutrient soil has an instability problem, which leads to longer seed germination time and requires continuous replenishment of organic fertilizer to maintain soil fertility, making the process complicated. Summary of the Invention

[0005] This invention proposes a nutrient soil that improves soil organic matter and its preparation method, which solves the problem of unstable nutrient soil in related technologies and shortens the seed germination time.

[0006] The technical solution of the present invention is as follows:

[0007] A nutrient soil for improving soil organic matter comprises the following components in parts by weight: 100-180 parts coal gangue, 12-15 parts thickener, 5-7 parts binder, 2-4 parts vermiculite, 1-2 parts dispersant, 1-3 parts thiophanate-methyl, and 1-2 parts fungicide.

[0008] This invention utilizes SiO2, the main component of coal gangue, as a flow carrier, while silicon dioxide is also used as a nutrient element. A thickener is used as the flow medium, and thiophanate-methyl is added to the thickener to prevent crop diseases. Furthermore, the humic acid in coal gangue can undergo various reactions with heavy metal ions in the soil, including ion exchange, redox reactions, adsorption, and complexation.

[0009] Coal gangue is mainly composed of Al2O3 and SiO2. SiO2 has many microporous channels, which can act as a flow carrier. There are also many lignite layers between coal gangue. The humic acid in lignite can increase soil organic matter.

[0010] Because coal gangue is not easily decomposed quickly in the soil, it can slowly release organic matter, providing crops with a long-term stable living environment.

[0011] As a further technical solution, the coal gangue is crushed and passed through a 30-50 mesh sieve before use.

[0012] As a further technical solution, the thickener includes one or more of gelatin, seaweed gum, and soluble starch.

[0013] As a further technical solution, the binder is one or more of xanthan gum and bentonite.

[0014] As a further technical solution, the dispersant includes one or more of polyethylene glycol 200 and polyethylene glycol 400.

[0015] As a further technical solution, the thiophanate-methyl is a 50% wet powder of thiophanate-methyl.

[0016] As a further technical solution, the bactericide includes one of kasugamycin and agricultural streptomycin.

[0017] This invention also includes a method for preparing nutrient soil that improves soil organic matter, comprising the following steps:

[0018] S1. Mix coal gangue, water, and thickener evenly, then add thiophanate-methyl and mix evenly to obtain mixture A;

[0019] S2. Add vermiculite and binder to mixture A, mix well, and obtain mixture B;

[0020] S3. Add dispersant and bactericide to mixture B, mix evenly, and then dry to obtain nutrient soil.

[0021] As a further technical solution, S1 involves mixing coal gangue, water, and thickener evenly, heating the mixture to 30-50°C, and then adding thiophanate-methyl and mixing evenly to obtain mixture A.

[0022] As a further technical solution, S1 involves mixing coal gangue and water, adding gelatin while stirring, heating to 30°C, continuing to stir for 30 minutes, adding 50% wet thiophanate-methyl powder, and then continuing to stir for another 90 minutes to obtain mixture A.

[0023] As a further technical solution, S2 is as follows: after mixture A is cooled, vermiculite is added to mixture A and stirred for 10 minutes, then xanthan gum is added, and after stirring again, mixture B is obtained.

[0024] As a further technical solution, the drying temperature in S3 is 40-50℃.

[0025] As a further technical solution, the mixing in step S3 is carried out by stirring for 10-20 minutes.

[0026] The working principle and beneficial effects of this invention are as follows:

[0027] 1. In this invention, coal gangue is an inexpensive solid waste, reducing costs. Furthermore, the silica channels within the coal gangue act as a flow carrier, the thickener as a flow medium, and thiophanate-methyl is introduced as an organic compound that effectively controls crop diseases, expanding the range of action of thiophanate-methyl on plants. The coal gangue is bound to vermiculite with a binder, utilizing the vermiculite's soil-loosening properties to ensure oxygen absorption by plant roots. Simultaneously, the small amount of humic acid in the coal gangue provides a continuous supply of organic matter, ensuring soil stability. This allows both coal gangue and vermiculite to work synergistically, creating a favorable growing environment for crops.

[0028] 2. The nutrient soil prepared by this invention is easy to use and can be quantitatively applied according to different crops, which not only reduces costs but also optimizes plant growth. Attached Figure Description

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Figure 1 The images show the seed germination of the blank group, comparative example 5, comparative example 4 and example 1 of this invention after 10 days of cultivation.

[0031] In the figure: from left to right, they are the blank group, comparative example 5, comparative example 4, and example 1. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve. Take 100g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 12g of gelatin while stirring, heat to 30℃, continue stirring for 30min, add 1g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A. The coal gangue was mechanically crushed and passed through a 40-mesh sieve before being added.

[0035] S2. After cooling mixture A to 25°C, add 2g of vermiculite to mixture A and stir for 10 minutes. Then add 5g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0036] S3. Add 1g of polyethylene glycol 200 and 1g of kasugamycin to mixture B, stir for 10 minutes, and then dry at 40℃ to obtain nutrient soil.

[0037] Example 2

[0038] S1. Mechanically crush the coal gangue and pass it through a 30-mesh sieve. Take 120g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 13g of alginate while stirring, heat to 40℃, continue stirring for 30min, add 2g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A.

[0039] S2. After cooling mixture A to 25°C, add 3g of vermiculite to mixture A and stir for 10 minutes. Then add 6g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0040] S3. Add 2g of polyethylene glycol 400 and 2g of agricultural streptomycin to mixture B, stir for 20 minutes, and then dry at 50℃ to obtain nutrient soil.

[0041] Example 3

[0042] S1. Mechanically crush the coal gangue and pass it through a 50-mesh sieve; take 140g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 14g of soluble starch while stirring, heat to 50℃, continue stirring for 30min, add 3g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A;

[0043] S2. After cooling mixture A to 25°C, add 4g of vermiculite to mixture A and stir for 10 minutes. Then add 7g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0044] S3. Add 1g of polyethylene glycol 200 and 2g of kasugamycin to mixture B, stir for 10 minutes, and then dry at 40℃ to obtain nutrient soil.

[0045] Example 4

[0046] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve. Take 160g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 15g of gelatin while stirring, heat to 30℃, continue stirring for 30min, add 1g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A.

[0047] S2. After cooling mixture A to 25°C, add 2g of vermiculite to mixture A and stir for 10 minutes. Then add 5g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0048] S3. Add 2g of polyethylene glycol 400 and 1g of agricultural streptomycin to mixture B, stir for 20 minutes, and then dry at 50℃ to obtain nutrient soil.

[0049] Example 5

[0050] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve. Take 180g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 15g of alginate while stirring, heat to 50℃, continue stirring for 30min, add 2g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A.

[0051] S2. After cooling mixture A to 25°C, add 3g of vermiculite to mixture A and stir for 10 minutes. Then add 5g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0052] S3. Add 2g of polyethylene glycol 200 and 2g of agricultural streptomycin to mixture B, stir for 10 minutes, and then dry at 50℃ to obtain nutrient soil.

[0053] Example 6

[0054] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve; take 180g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 15g of soluble starch while stirring, heat to 50℃, continue stirring for 30min, add 3g of 50% wet thiophanate-methyl powder, and continue stirring for another 90min to obtain mixture A;

[0055] S2. After cooling mixture A to 25°C, add 4g of vermiculite to mixture A and stir for 10 minutes. Then add 7g of xanthan gum and stir for 30 minutes to obtain mixture B.

[0056] S3. Add 2g of polyethylene glycol 400 and 2g of kasugamycin to mixture B, stir for 20 minutes, and then dry at 50℃ to obtain nutrient soil.

[0057] Comparative Example 1

[0058] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve; take 180g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker, then add 3g of 50% wet thiophanate-methyl powder and continue stirring for 90min to obtain mixture A;

[0059] S2. Add 4g of vermiculite to mixture A and stir for 10 minutes, then add 2g of kasugamycin to obtain mixture B;

[0060] S3. Place mixture B on a tablet press and compress it to obtain nutrient soil.

[0061] Comparative Example 2

[0062] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve; take 180g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker, then add 3g of 50% wet thiophanate-methyl powder and continue stirring for 90min to obtain mixture A;

[0063] S2. Add 4g of vermiculite to mixture A and stir for 10 minutes. Then add 2g of kasugamycin and stir for 20 minutes to obtain nutrient soil.

[0064] Comparative Example 3

[0065] S1. Mechanically crush the coal gangue and pass it through a 40-mesh sieve; take 180g of the sieved coal gangue and 500mL of distilled water and add them to a 1000mL beaker. Add 15g of soluble starch while stirring, heat to 50℃, continue stirring for 30min, keep the temperature constant, add 3g of 50% wet thiophanate-methyl powder, continue stirring for 90min, and add 7g of xanthan gum binder to obtain mixture A;

[0066] S2. After cooling mixture A to 25°C, add 4g of vermiculite to mixture A and stir for 10min to obtain mixture B;

[0067] S3. Add 2g of polyethylene glycol 400 and 2g of kasugamycin to mixture B, stir for 20 minutes, and then dry at 50℃ to obtain nutrient soil.

[0068] Comparative Example 4

[0069] Compared with Example 1, Comparative Example 4 did not add 50% wet thiophanate-methyl powder, but was otherwise the same as Example 1.

[0070] Comparative Example 5

[0071] Mix 100g of coal gangue, 1g of 50% wet thiophanate-methyl powder, 2g of vermiculite, and 1g of kasugamycin to obtain nutrient soil.

[0072] Test case

[0073] Add 800g of soil substrate to each flowerpot. Add the nutrient soil (amount added) obtained in Examples 1-6 and Comparative Examples 1-3 and 80mL of water respectively to a depth of 3cm below the soil substrate. Place the cabbage seeds 1cm below the soil substrate and place them in the same location on the side exposed to sunlight. Observe the number of days required for germination. A control group without added nutrient soil was also set up. The experimental results are shown in Table 1.

[0074] Table 1. Number of days required for germination in Examples 1-6, the control group, and Comparative Examples 1-5.

[0075]

[0076]

[0077] Compared with Example 6, Comparative Example 1 did not add soluble starch and xanthan gum, and the components such as coal gangue and vermiculite were extruded; Comparative Example 2 did not add soluble starch and xanthan gum, and the components such as coal gangue and vermiculite were directly mixed; Comparative Example 3 changed the order of adding xanthan gum; and Comparative Example 5 directly mixed coal gangue, vermiculite, kasugamycin and thiophanate-methyl. The results showed that the germination days of Comparative Examples 1-3 and Comparative Example 5 were all greater than those of Example 1, indicating that the nutrient soil prepared by the present invention can better shorten the seed germination time.

[0078] Compared with Example 1, Comparative Example 4 did not add 50% wettable powder thiophanate-methyl, and the germination time of seeds in Comparative Example 4 was longer than that in Example 1.

[0079] The above are merely 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nutrient soil for improving soil organic matter, characterized in that, It includes the following components by weight: 100-180 parts coal gangue, 12-15 parts thickener, 5-7 parts binder, 2-4 parts vermiculite, 1-2 parts dispersant, 1-3 parts thiophanate-methyl, and 1-2 parts bactericide; The method for preparing nutrient soil that improves soil organic matter includes the following steps: S1. Mix coal gangue, water, thickener and thiophanate-methyl evenly to obtain mixture A; S2. Add vermiculite and binder to mixture A, mix well, and obtain mixture B; S3. Add dispersant and bactericide to mixture B, mix evenly, and then dry to obtain nutrient soil; S1 involves mixing coal gangue, water, and thickener evenly, heating the mixture to 30-50°C, then adding thiophanate-methyl and mixing evenly to obtain mixture A. The drying temperature in S3 is 40-50℃.

2. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The coal gangue is crushed and passed through a 30-50 mesh sieve before use.

3. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The thickener includes one or more of gelatin, seaweed gum, and soluble starch.

4. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The binder is one or more of xanthan gum and bentonite.

5. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The dispersant includes one or more of polyethylene glycol 200 and polyethylene glycol 400.

6. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The thiophanate-methyl is a 50% wet powder of thiophanate-methyl.

7. The nutrient soil for improving soil organic matter according to claim 1, characterized in that, The bactericide includes one of kasugamycin and agricultural streptomycin.

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