Self-sustaining water-absorbing type vegetation blanket for resource utilization of waste vinasse

Abstract

The present application relates to the technical field of ecological restoration, and specifically discloses a self-sustaining water-absorbing type vegetation blanket for resource utilization of waste vinasse, which comprises a lower net layer, a pulp paper layer, a substrate seed layer, a fiber foaming layer and an upper net layer; the substrate seed layer is formed by mixing nutrient soil substrate and plant seeds; and the fiber foaming layer is formed by mixing and foaming vinasse, hydrothermal carbon-hydrogel modified material and plant fiber with a foaming solution. The vegetation blanket has a simple structure, low cost, realizes resource recycling of waste vinasse, is convenient to store and transport, and has the effects of increasing soil aeration and water retention, improving soil fertility, and providing sufficient nutrients and air for plant growth. The vegetation blanket is suitable for ecological restoration in many fields, such as slope greening, ecological slope protection, bank protection and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological restoration, and particularly relates to a self-sustaining water-absorbing type vegetation carpet for resource utilization of waste distiller's grains. BACKGROUND

[0002] The current situation of water and soil loss and soil erosion of slopes is severe, becoming a major issue to be solved in the field of ecological environment protection. Under the influence of natural factors such as heavy rainfall, wind erosion and complex topography, combined with human activities such as overexploitation, unreasonable cultivation and infrastructure construction, the phenomena of water and soil loss and soil erosion of slopes are becoming increasingly serious. This not only leads to the loss of a large amount of valuable soil resources, reduces the productivity of land, but also seriously damages the natural stability structure of the slope, increasing the risk of landslides, mudslides and other natural disasters. Therefore, in the face of the severe situation of water and soil loss and soil erosion of slopes, effective measures should be taken to govern and prevent, and the natural ecological function of the slope should be restored, which has become an urgent need to ensure regional ecological security and promote sustainable development.

[0003] The existing slope ecological restoration technology mainly includes artificial grass protection, hydraulic spray planting protection, geocell planting protection and other methods. Artificial grass protection has problems such as uneven grass seed sowing and low survival rate, and often cannot achieve the ideal slope protection effect; hydraulic spray planting protection has fast construction speed and high construction quality, but has low soil fixation and water retention capacity, and is easy to form runoff ditches and erosion; geocell planting protection has good greening effect and is not limited by geological conditions, but the construction technology is relatively complex, the engineering cost is high, and the thickness of the substrate material sprayed is not easy to control, which is easy to fall off when too thin, and is easy to fall off when too thick.

[0004] As a new type of ecological restoration technology, vegetation carpet has the functions of quickly restoring vegetation, preventing soil erosion and improving soil structure, and compared with traditional slope reinforcement technology, the construction cost of vegetation carpet is usually lower, and after the restoration is completed, the self-growth of plants can reduce the subsequent maintenance cost, which embodies high economic benefits, and is widely used in the fields of soil and water conservation, river regulation, mine restoration and the like.

[0005] Distiller's grains are by-products in the process of brewing, containing a large amount of organic matter and nutrient components. The traditional treatment method of distiller's grains is usually through stacking, landfill or incineration, which not only wastes resources, but also may pollute the environment, and how to resource utilization of waste distiller's grains has become an important research topic.

[0006] The water heat carbon is made from the waste distiller's grains, which realizes the resource utilization of the waste distiller's grains, and the water heat carbon material can be used as a soil conditioner to improve the soil fertility and water retention capacity, and the modified material formed by the water heat carbon and the hydrogel with good water absorption can effectively improve the function of the vegetation blanket, and has significant environmental, economic and social benefits. SUMMARY

[0007] To solve the problems in the prior art, the application provides a self-sustaining water absorption type vegetation blanket for resource utilization of waste distiller's grains, which integrates distiller's grains, water heat carbon-hydrogel modified material and coconut fiber to improve the water retention capacity, soil fertility and support capacity for plant growth of the vegetation blanket.

[0008] To achieve the above object, the application provides the following technical scheme: a self-sustaining water absorption type vegetation blanket for resource utilization of waste distiller's grains, which comprises a lower net layer, a pulp paper layer, a substrate seed layer, a fiber foaming layer and an upper net layer, and each layer is connected by quilting from bottom to top, and the thickness of the vegetation blanket is 20-30 mm.

[0009] Preferably, the lower net layer and the upper net layer are coconut fiber nets, and the pulp paper layer is degradable wood pulp paper.

[0010] Preferably, the substrate seed layer is a mixture of nutrient soil substrate and plant seeds, and the plant seeds are alfalfa seeds.

[0011] Preferably, the nutrient soil substrate comprises nutrient soil for providing nutrition for seed germination and growth and water heat carbon-hydrogel modified material, and the mass ratio of the nutrient soil to the water heat carbon-hydrogel modified material is 50:1.

[0012] Preferably, the fiber foaming layer is formed by mixing and foaming distiller's grains, water heat carbon-hydrogel modified material, plant fiber and foaming solution, the solid-liquid ratio is 1:8-12, and the mass-volume ratio of the distiller's grains, the water heat carbon-hydrogel modified material, the plant fiber and the foaming solution is 16g:5-15g:10-20g:248-504mL.

[0013] The foaming is that the vegetation blanket is reacted under the condition of 400W microwave for 8 minutes, so that the fiber foaming layer becomes a fluffy and porous structure.

[0014] Preferably, the plant fiber is coconut fiber, and the foaming solution is prepared by mixing polyvinyl alcohol, corn starch, ammonium bicarbonate and azodicarbonamide and adding water.

[0015] Preferably, the mass-volume ratio of polyvinyl alcohol, corn starch, ammonium bicarbonate, azodicarbonamide and water in the foaming solution is 30g:30g:5g:15g:1000mL.

[0016] Preferably, the hydrothermal carbon-hydrogel modified material is a modified material prepared by mixing hydrothermal carbon and hydrogel in equal proportions from waste distiller's grains, which can realize the resource recycling of distiller's grains. The hydrogel has extremely high water absorption and retention capacity, can significantly improve the water retention of soil, reduce water evaporation, and provide sustained water supply for plants; the hydrothermal carbon can improve the soil structure, increase the aeration and water retention of soil, and is rich in trace elements, which helps to improve the soil fertility, and the new modified material formed by the two has the advantages of both.

[0017] Preferably, the preparation of the hydrothermal carbon-hydrogel modified material comprises the following steps:

[0018] S1, preparation of hydrogel material: acrylamide, ammonium persulfate and N-N'methylene acrylamide are added to pure water respectively, stirred uniformly, placed in a 70℃ water bath, heated for 2h, taken out, cooled, washed with anhydrous ethanol to remove unreacted reagents, placed in a 60℃ oven, completely dried, poured into a powder machine, and beaten into fine particles to obtain the hydrogel material;

[0019] S2, preparation of hydrothermal carbon material: the waste distiller's grains are washed with clean water, washed with pure water for 2-3 times, dried in a 100℃ oven, cooled, powdered, sieved through an 80 mesh sieve to obtain distiller's grain powder; the distiller's grain powder is mixed with pure water in a mass ratio of 1:7, poured into a reaction kettle, reacted at 200℃ for 6h, the supernatant is poured out after cooling, the lower solid material is washed with pure water for 3-4 times, dried in a 100℃ oven, and crushed after drying to obtain the hydrothermal carbon material;

[0020] S3, preparation of hydrothermal carbon-hydrogel modified material: the hydrothermal carbon and the hydrogel are mixed in equal proportions to obtain the hydrothermal carbon-hydrogel modified material.

[0021] Preferably, in step S1, the mass-volume ratio of acrylamide, ammonium persulfate, N-N'methylene acrylamide and pure water is 40g:40g:1.2g:1000mL.

[0022] The beneficial effects of the present application are:

[0023] 1) The plant growth blanket of the present application uses waste distiller's grains as the main raw material, which is converted into a material with water retention and nutritional value by hydrothermal carbonization technology, which not only solves the problem of waste distiller's grains, but also realizes the recycling of resources.

[0024] 2) The invention adopts degradable plant fiber coconut fiber and waste distiller's grains, which will not cause secondary pollution to the environment after use, and conforms to the green, low-carbon and sustainable development concept.

[0025] 3) The invention has high water absorption performance, which can effectively absorb and store rainwater or irrigation water to provide sufficient water for plant growth. At the same time, it also has strong water retention performance, which can reduce the evaporation of surface water, reduce irrigation frequency and water consumption, save water resources and irrigation cost.

[0026] 4) The invention can promote plant growth. The waste distiller's grains contain rich organic matter and trace elements, which can provide necessary nutrient support for plant growth, which helps to promote plant growth and development, and improve plant growth speed and coverage.

[0027] 5) The invention not only can quickly restore vegetation coverage, but also can effectively improve soil structure, increase soil fertility and erosion resistance. This has important significance for ecological restoration of ecologically fragile areas such as mines and deserts.

[0028] 6) The invention has relatively simple and fast construction process, does not need complex construction equipment and large amount of manpower investment, and has relatively low production cost and maintenance cost. At the same time, it has good adaptability and flexibility, which can adapt to various complex topography and climate conditions. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The structure diagram of the self-sustaining water absorption type vegetation blanket for resource utilization of waste distiller's grains in the embodiment of the invention;

[0030] Figure 2 The cross-sectional view of the vegetation blanket in the embodiment of the invention;

[0031] Figure 3a The SEM diagram of the hydrothermal carbon material in the embodiment;

[0032] Figure 3b The SEM diagram of the hydrogel material in the embodiment;

[0033] Figure 4a The XRD diagram of the hydrothermal carbon material in the embodiment;

[0034] Figure 4b The XRD diagram of the hydrogel material in the embodiment;

[0035] Figure 5a The FTIR diagram of the hydrothermal carbon material in the embodiment;

[0036] Figure 5b The FTIR diagram of the hydrogel material in the embodiment;

[0037] Figure 6 The water content comparison chart of the vegetation blanket of examples 1-9 within 48 hours;

[0038] Figure 7a The average height comparison chart of the vegetation blanket of examples 1-9 within two months of laying;

[0039] Figure 7b The highest height comparison chart of the vegetation blanket of examples 1-9 within two months of laying. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] The present application provides a technical solution: a self-sustaining water-absorbing vegetation blanket for resource utilization of waste distiller's grains, as shown in the structure Figure 1 The lower net layer and the upper net layer ensure the stability of the structure of the vegetation blanket and are not easy to be damaged during the transportation of the vegetation blanket. The pulp paper layer further strengthens the stability of the vegetation blanket and has a certain water absorption. The substrate seed layer includes nutrient soil added with hydrothermal carbon-hydrogel modified material as the substrate for plant growth, and plant seeds are uniformly sown according to different local conditions. The fiber foaming layer is a key component of the vegetation blanket, which is formed by mixing and foaming of distiller's grains, hydrothermal carbon-hydrogel modified material, plant fiber and foaming solution, which ensures good water absorption and retention performance, porous ventilation structure and rich nutrient content of the vegetation blanket, and provides sufficient conditions for the growth of plants.

[0042] Specifically, the upper net layer and the lower net layer are made of degradable coconut fiber net, which is made of natural material with high softness, ventilation and water locking property, can play a role in erosion resistance in the early stage of laying the vegetation blanket, can maintain the stability of the structure of the vegetation blanket, and can provide a loose and ventilated growth environment for the root system of plants.

[0043] In order to make the plants grow normally, the waste distiller's grains themselves have rich nutrient ingredients, the hydrothermal carbon material prepared from the waste distiller's grains is rich in trace elements, which helps to improve the soil fertility, and the new modified material formed by mixing the hydrothermal carbon material with the hydrogel material with high water absorption and retention capacity can comprehensively improve the performance and ecological benefits of the vegetation blanket, and the foaming technology can provide a loose and ventilated growth environment for the plants inside the vegetation blanket, and ensure the stable growth of the plants.

[0044] Using the above method, the present application lists the following examples, the remaining layers are the same as above, the fiber foaming layer and the matrix seed layer are adjusted, as follows:

[0045] Example 1

[0046] A self-sustaining water-absorbing type of plant growth blanket for resource utilization of waste distiller's grains, the material addition ratio in the fiber foaming layer is as follows: the mass volume ratio of each component added in the fiber foaming layer is distiller's grains: coconut fiber: hydrothermal carbon-hydrogel modified material: foaming solution = 16g:5g:10g:248mL, that is, the addition ratio of other materials to foaming solution is 1:8.

[0047] The foaming solution is prepared by adding 30g of polyvinyl alcohol, 30g of corn starch, 5g of ammonium bicarbonate and 15g of azodicarbonamide into 1000mL of water and stirring to mix uniformly.

[0048] Preparation of hydrothermal carbon-hydrogel modified material:

[0049] (1) Preparation of hydrogel material

[0050] 40g of acrylamide, 40g of ammonium persulfate and 1.2g of N-N'methylene acrylamide were added into 1L of pure water, stirred uniformly, and then placed in a 70℃ water bath for 2h. After cooling, the unreacted reagents were washed away with anhydrous ethanol, and then placed in a 60℃ oven for complete drying. The mixture was then poured into a powdering machine and powdered to a fine particle size. The hydrogel material was obtained and stored in a bag. The SEM, XRD and FTIR images of the hydrogel material are shown in Figure 3b 、 Figure 4b 、 Figure 5b .

[0051] (2) Preparation of hydrothermal carbon material

[0052] The waste distiller's grains were washed with clean water and then washed with pure water for 2-3 times. The grains were then dried in a 100℃ oven, cooled, powdered, and sieved through an 80 mesh sieve. The fine distiller's grain powder and coarse distiller's grain powder were obtained and stored in a bag.

[0053] The fine distiller's grain powder was mixed with pure water at a mass ratio of 1:7, poured into a reaction kettle, and reacted at 200℃ for 6h. After cooling, the supernatant was poured out, and the solid material was washed with pure water for 3-4 times and then dried in a 100℃ oven. The material was crushed and stored in a bag. The hydrothermal carbon material was obtained. The SEM, XRD and FTIR images of the hydrothermal carbon material are shown in Figure 3a 、 Figure 4a 、 Figure 5a .

[0054] (3) Mix the hydrochar and hydrogel at the same proportion to obtain the hydrochar-hydrogel modified material.

[0055] Add 200 g of nutrient soil, 4 g of hydrochar-hydrogel modified material and 20 mL of foaming solution in the matrix seed layer, and select alfalfa as the plant seeds.

[0056] Foam the whole vegetation blanket under the condition of 400 W microwave for 8 min to obtain a fluffy and porous structure.

[0057] Example 2

[0058] A self-sustaining water-absorbing vegetation blanket for resource utilization of waste distiller's grains, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is distiller's grains: coconut fiber: hydrochar-hydrogel modified material: foaming solution = 16 g: 5 g: 16 g: 370 mL, that is, the addition ratio of other materials to foaming solution is 1:10.

[0059] Example 3

[0060] A self-sustaining water-absorbing vegetation blanket for resource utilization of waste distiller's grains, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is distiller's grains: coconut fiber: hydrochar-hydrogel modified material: foaming solution = 16 g: 5 g: 20 g: 492 mL, that is, the addition ratio of other materials to foaming solution is 1:12.

[0061] Example 4

[0062] A self-sustaining water-absorbing vegetation blanket for resource utilization of waste distiller's grains, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is distiller's grains: coconut fiber: hydrochar-hydrogel modified material: foaming solution = 16 g: 10 g: 10 g: 360 mL, that is, the addition ratio of other materials to foaming solution is 1:10.

[0063] Example 5

[0064] A self-sustaining water-absorbing vegetation blanket for resource utilization of waste distiller's grains, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is distiller's grains: coconut fiber: hydrochar-hydrogel modified material: foaming solution = 16 g: 10 g: 16 g: 504 mL, that is, the addition ratio of other materials to foaming solution is 1:12.

[0065] Example 6

[0066] A self-sustaining water-absorbing type of vegetation blanket for resource utilization of waste vinasse, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is vinasse: coconut fiber: hydrothermal carbon-hydrogel modified material: foaming solution = 16g: 10g: 20g: 368mL, that is, the addition ratio of other materials to the foaming solution is 1:8.

[0067] Example 7

[0068] A self-sustaining water-absorbing type of vegetation blanket for resource utilization of waste vinasse, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is vinasse: coconut fiber: hydrothermal carbon-hydrogel modified material: foaming solution = 16g: 15g: 10g: 492mL, that is, the addition ratio of other materials to the foaming solution is 1:12.

[0069] Example 8

[0070] A self-sustaining water-absorbing type of vegetation blanket for resource utilization of waste vinasse, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is vinasse: coconut fiber: hydrothermal carbon-hydrogel modified material: foaming solution = 16g: 15g: 16g: 376mL, that is, the addition ratio of other materials to the foaming solution is 1:8.

[0071] Example 9

[0072] A self-sustaining water-absorbing type of vegetation blanket for resource utilization of waste vinasse, the material addition ratio in the fiber foaming layer is as follows: the mass-volume ratio of each component added in the fiber foaming layer is vinasse: coconut fiber: hydrothermal carbon-hydrogel modified material: foaming solution = 16g: 15g: 20g: 510mL, that is, the addition ratio of other materials to the foaming solution is 1:10.

[0073] Table 1 is a table of material addition ratios in the fiber foaming layer of the vegetation blankets of Examples 1-9, the vinasse addition amount is fixed at 16g, the coconut fiber addition amount ranges from 5g to 15g, the hydrothermal carbon-hydrogel modified material addition amount ranges from 10g to 20g, and the foaming solution addition amount ranges from 248mL to 504mL, that is, the addition amount ratio of other materials to the foaming solution ranges from 1:8 to 1:12.

[0074] Table 1 is a table of material addition ratios in the fiber foaming layer of the vegetation blankets of Examples 1-9, the vinasse addition amount is fixed at 16g, the coconut fiber addition amount ranges from 5g to 15g, the hydrothermal carbon-hydrogel modified material addition amount ranges from 10g to 20g, and the foaming solution addition amount ranges from 248mL to 504mL, that is, the addition amount ratio of other materials to the foaming solution ranges from 1:8 to 1:12.

[0075]

[0076]

[0077] The vegetation blankets prepared in Examples 1-9 are laid on the artificial constructed gravel soil slope to carry out planting tests, and other conditions such as rainfall and temperature are the same.

[0078] Comparative Example

[0079] The bare rock soil slope without the vegetation mat was subjected to the same rainfall, temperature and other conditions as in Example 1-9.

[0080] Table 2 shows the changes in the soil physical and chemical properties within one month after the vegetation mat of Example 1-9 was laid. As can be seen from the table, compared with the comparative example, the content of ammonia nitrogen, available phosphorus, available potassium and organic carbon in the soil after the vegetation mat of Example 1-9 was laid was improved, and could remain at a high level over time. It was found through comprehensive comparison that the vegetation mat of Example 6 had the most significant effect on the improvement of the soil physical and chemical properties.

[0081] Table 2 Changes in the content of ammonia nitrogen, available phosphorus, available potassium and organic carbon in the soil within one month after the vegetation mat of Example 1-9 was laid

[0082]

[0083]

[0084] Table 3 and Figure 6 show the comparison of the water retention rate of the vegetation mat of Example 1-9 within 48h. The water retention rate at 0h was the saturated water content of the vegetation mat of Example 1-9, and the saturated water content of each group was more than 140%, indicating that the added material had good water absorption performance. The saturated water content of Example 1, 4, 5, 8 and 7 groups was more than 200%. The water content of the vegetation mat of Example 1-9 was then measured within 48h to find the change in the water content over time. It was found that the water retention rate tended to be stable after 2h, and the water retention rate of Example 6 was the first to stabilize, indicating that the water retention performance of the material was good. The water retention rate of Example 1-9 was more than 130%, and the water retention rate of Example 1 and 8 groups was also more than 200% after stabilization.

[0085] Table 3 Changes in the water retention rate of the vegetation mat of Example 1-9 within 48h

[0086]

[0087] Table 4 and Figure 7a , Figure 7b show the comparison of the average plant height and the maximum plant height of the vegetation mat of Example 1-9 within two months. It was found that the average plant height of Example 2-8 groups was more than 14cm after two months, and the average plant height of Example 5 was 18.2cm. The maximum plant height of Example 1-9 groups was more than 15cm after two months, and the maximum plant height of Example 3-7 groups was more than 25cm, and the maximum plant height of Example 6 was 33.8cm.

[0088] Table 4 Changes in the average plant height and the maximum plant height of the vegetation mat of Example 1-9 within two months

[0089]

[0090]

[0091] The plant survival rate of the vegetation blanket provided by the embodiment of the present application is high, the plant root system can draw nutrients in the substrate seed layer, then penetrates through the pulp paper layer and the lower net layer, and grows into the slope, and is integrated with the slope, which is beneficial to improve the stability of the slope structure; the plant stems and leaves can penetrate through the loose and breathable fiber foaming layer and the upper net layer, grow outward, and cover the slope surface, and gradually form a stable ecological system to repair the surrounding environment.

[0092] Although the present application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-sustaining water-absorbing type vegetation carpet for resource utilization of waste vinasse, characterized in that, The structure of the vegetation blanket comprises a lower net layer, a pulp paper layer, a substrate seed layer, a fiber foaming layer and an upper net layer, each layer is connected by quilting from bottom to top, and the thickness of the vegetation blanket ranges from 20mm to 30mm; The fiber foaming layer is formed by mixing and foaming wine lees, hydrothermal carbon-hydrogel modified material and plant fiber with a foaming solution, and the solid-liquid ratio is 1:8; the mass-volume ratio of the wine lees, hydrothermal carbon-hydrogel modified material, plant fiber and foaming solution is 16g:10g:20g:368mL; The foaming is performed under the condition of 400W microwave for 8 minutes to make the fiber foaming layer into a fluffy and porous structure. The preparation of the hydrothermal carbon-hydrogel modified material comprises the following steps: S1, preparation of hydrogel material: acrylamide, ammonium persulfate and N-N'methylene acrylamide are added into pure water respectively, stirred uniformly, placed into a 70℃ water bath, heated for 2h, taken out, cooled, washed with anhydrous ethanol to remove unreacted reagents, placed into a 60℃ oven, completely dried, poured into a powder machine, and beaten into fine particles to obtain the hydrogel material; S2, preparation of hydrothermal carbon material: the waste wine lees are washed with clean water, washed with pure water for 2-3 times, placed into a 100℃ oven for drying, taken out and cooled, powdered, and sieved through an 80 mesh sieve to obtain wine lees powder; the wine lees powder and pure water are mixed uniformly according to a mass ratio of 1:7, poured into a reaction kettle, reacted at 200℃ for 6h, the supernatant is poured out after cooling, the lower solid material is washed with pure water for 3-4 times, placed into a 100℃ oven for drying, and crushed after drying to obtain the hydrothermal carbon material; S3, preparation of hydrothermal carbon-hydrogel modified material: the hydrothermal carbon and the hydrogel are mixed in equal proportions to obtain the hydrothermal carbon-hydrogel modified material.

2. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 1, characterized in that: The lower net layer and the upper net layer are coconut fiber nets; and the pulp paper layer is degradable wood pulp paper.

3. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 1, characterized in that: The substrate seed layer is formed by mixing nutrient soil and plant seeds, and the plant seeds are alfalfa seeds.

4. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 3, characterized in that: The nutrient soil substrate comprises nutrient soil and hydrothermal carbon-hydrogel modified material for providing nutrients for seed germination and growth, and the mass ratio of the nutrient soil and the hydrothermal carbon-hydrogel modified material is 50:

1.

5. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 1, characterized in that: The plant fiber is coconut fiber; and the foaming solution is prepared by mixing polyvinyl alcohol, corn starch, ammonium bicarbonate and azodicarbonamide with water.

6. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 5, characterized in that: The mass-volume ratio of polyvinyl alcohol, corn starch, ammonium bicarbonate, azodicarbonamide and water in the foaming solution is 30g:30g:5g:15g:1000mL.

7. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 1, characterized in that: The hydrothermal carbon-hydrogel modified material is a modified material formed by mixing equal proportions of hydrothermal carbon and hydrogel, which is prepared from waste wine lees.

8. The self-sustaining water-absorbing type plant blanket for resource utilization of waste vinasse according to claim 1, characterized in that: In step S1, the mass-volume ratio of acrylamide, ammonium persulfate, N-N'methylene acrylamide and pure water is 40g:40g:1.2g:1000mL.

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