Auxiliary seed throwing brick for floating-leaf / submerged plants and preparation method of auxiliary seed throwing brick

Abstract

The invention relates to the technical field of water environment ecological restoration engineering, and particularly discloses a floating leaf / submerged plant auxiliary seed throwing brick and a preparation method thereof. The floating leaf / submerged plant auxiliary seed throwing brick comprises 40-60 parts of air-dried soil, 10-20 parts of kaolin, 8-10 parts of wheat straw, 5-10 parts of plant growth-promoting bacteria, 1-3 parts of plant hormones and 2-5 parts of sodium alginate. The seed throwing brick is reasonable in structural design and excellent in underwater stability, the survival and growth efficiency of plants can be remarkably improved, and the mechanical performance and use durability of the brick body are enhanced.

Description

Technical Field

[0001] This invention relates to the technical field of aquatic environment ecological restoration engineering, and in particular to a floating-leaved / submerged plant auxiliary seeding brick and its preparation method. Background Technology

[0002] Reconstructing floating-leaved / submerged plant communities through artificial planting to restore the function of aquatic ecosystems has gradually become an important part of aquatic environment ecological restoration projects. Commonly used methods for planting floating-leaved / submerged plants include sowing, seeding by cutting, and direct seeding. Sowing involves directly scattering aquatic plant seeds in the target water area; however, due to the light weight of the seeds, their susceptibility to wind and waves leading to aggregation, low germination rates, slow seedling growth, and the ease with which fish consume the seeds and tender stems, its restoration effect is often poor. Seeding involves inserting the seedling roots into the bottom sediment using tools; this method is only suitable for shallow water areas. In contrast, direct seeding has the advantages of simple operation, high plant survival rate, and can be applied to areas with a water depth exceeding 50 cm.

[0003] Currently, the commonly used method of direct seeding typically involves binding aquatic plants to counterweights such as stones or cement blocks before casting them into the water. However, these counterweight materials are difficult to degrade, and long-term use can damage the substrate environment. Furthermore, the binding process is time-consuming and labor-intensive. In addition, existing counterweights have a single function, serving only to stabilize the plant and failing to promote plant growth. Therefore, optimizing the formulation of counterweights in direct seeding methods, enabling them to provide both weight and plant growth promotion, is of great significance for improving the efficiency of direct seeding of floating-leaved / submerged plants. Summary of the Invention

[0004] To address the problem that seed-throwing counterweight materials are difficult to degrade and cannot promote plant growth, this application provides a floating-leaf / submerged plant auxiliary seed-throwing brick and its preparation method.

[0005] Firstly, this application provides a floating-leaved / submerged plant seed-planting auxiliary brick, which adopts the following technical solution: A type of floating / submerged plant seed-planting aid brick comprises the following raw materials in parts by weight: 40-60 parts air-dried soil, 10-20 parts kaolin, 8-10 parts wheat straw, 5-10 parts plant growth-promoting bacteria, 1-3 parts plant hormones, and 2-5 parts sodium alginate.

[0006] In one specific implementation scheme, the air-dried soil is any one or more of the following: naturally air-dried nursery soil, riverbed mud, and raw soil.

[0007] In one specific implementation scheme, the plant growth-promoting bacteria, by weight, comprise the following raw materials: 10-20 parts of Bacillus subtilis, 20-30 parts of Bacillus megaterium, 2-4 parts of Bacillus polymyxa, 20-40 parts of Pseudomonas, 15-25 parts of Agrobacterium tumefaciens, and 5-9 parts of Agrobacterium rhizogenes.

[0008] In one specific implementation scheme, the plant hormone comprises the following raw materials by weight: 30-40 parts cytokinin, 20-30 parts gibberellin, and 20-40 parts naphthaleneacetic acid.

[0009] In one specific feasible implementation, the plant hormone is prepared by the following steps: dissolving cytokinin, gibberellin, and naphthaleneacetic acid in alcohol respectively, and then mixing them in a weight ratio to obtain the plant hormone.

[0010] In one specific implementation scheme, the floating leaf / submerged plant auxiliary seeding brick has a flat-truncated conical structure, with the bottom diameter of the seeding brick being larger than the top diameter. The seeding brick has a through hole extending from the top to the bottom, with the top diameter of the through hole being smaller than the bottom diameter. The side surface of the seeding brick has a flared opening for connecting the through hole, with the flared opening extending from the top to the bottom of the seeding brick.

[0011] Secondly, this application provides a method for preparing a floating-leaf / submerged plant auxiliary seed-throwing brick, which adopts the following technical solution: A method for preparing a seed-throwing brick for floating-leaved / submerged plants includes the following steps: Pretreatment: The air-dried soil and kaolin were steam-sterilized at 105-110℃ for 2-3 hours, air-dried and sieved to obtain pretreated air-dried soil and pretreated kaolin. The wheat straw was dried and crushed to obtain pretreated wheat straw. Mixing: According to the formula, mix the pretreated air-dried soil, pretreated kaolin, pretreated wheat straw, plant growth-promoting bacteria and plant hormones evenly to obtain dry material; Pulping: Dissolve sodium alginate in water, let stand for 5-10 minutes, and then add it to the dry material with stirring to obtain wet material; Roll forming: Wet material is added to a mold, pressed into shape, demolded, and left to set to obtain a green body; Shade-drying maintenance: Place the raw bricks in a well-ventilated, dark place with a temperature of 15-25℃ and a relative humidity of 50%-70% for shade-drying maintenance for 5-7 days to obtain floating leaf / submerged plant auxiliary planting bricks.

[0012] In one specific feasible implementation, the pretreated wheat straw is 1-2 cm in length.

[0013] In summary, this application has the following beneficial effects: 1. This application significantly improves plant survival and growth efficiency: The present invention adds plant growth-promoting bacteria and plant hormones to the seed-throwing bricks, which can effectively promote the root development and plant growth of aquatic plants, not only greatly improving the plant survival rate, but also helping to shorten the seedling recovery time and accelerate community construction.

[0014] 2. This application enhances the mechanical properties and durability of the bricks: By introducing wheat straw and sodium alginate as reinforcing materials, the toughness and resistance to breakage of the bricks are significantly improved, reducing the risk of breakage during transportation and throwing operations, and making them more suitable for practical engineering applications.

[0015] 3. The structure of this application is reasonable and has excellent underwater stability: The seed-throwing brick adopts a flat-truncated cone shape, which is wider at the bottom and narrower at the top. This not only facilitates quick identification of direction and correct throwing, but also effectively improves its positioning and anti-overturning ability on the bottom sediment, which helps plants to grow stably underwater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the floating-leaf / submerged plant auxiliary seed-throwing brick in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the top structure of the floating-leaf / submerged plant auxiliary seed-throwing brick in Embodiment 1 of this application; Figure 3 This is a cross-sectional view of the floating-leaved / submerged plant auxiliary seed-throwing brick in Embodiment 1 of this application; Reference numerals: 1. Through hole; 2. Flared mouth. Detailed Implementation

[0017] Unless otherwise specified, all raw materials used in this application were obtained commercially. The nursery soil was organic soil purchased from Hebei Woye Fertilizer Co., Ltd. Kaolin was purchased from Shijiazhuang Baijiang Mineral Products Co., Ltd. Wheat straw was purchased from Xincai County Linghang Family Farm. Bacillus subtilis was purchased from Kunshan Shengan Biotechnology Co., Ltd., model D1UL. Bacillus megaterium was purchased from Pingdu Branch of Yuanda Life Science (Qingdao) Co., Ltd., model KCYBGJ-200. Bacillus polymyxa was purchased from Weifang Ruichen Biotechnology Co., Ltd., with an effective viable count of 5 billion CFU / g. Pseudomonas was Rhodopseudomonas palustris from Wuhan Beileye Biomedical Technology Co., Ltd., with an effective viable count of 1 billion CFU / g. Shortwave monoclonal antibodies were purchased from Ruichu Biotechnology (Jiangsu) Co., Ltd., product specification SMHCC D73826. Agrobacterium rhizogenes was purchased from Guangzhou Huayun Biotechnology Co., Ltd., model GV3101. Cytokinin was purchased from Wuhan Kemike Biomedical Technology Co., Ltd., model Cl38173. Gibberellin was purchased from Guangzhou Huayu Biotechnology Co., Ltd. Naphthaleneacetic acid was purchased from Wuhan Lanabai Pharmaceutical Chemical Co., Ltd.

[0018] The present application will be further described in detail below with reference to embodiments and comparative examples.

[0019] Example Example 1 This embodiment provides a floating / submerged plant seeding aid brick, comprising the following raw materials by weight: 50 kg of air-dried soil, 15 kg of kaolin, 9 kg of wheat straw, 7.5 kg of plant growth-promoting bacteria, 2 kg of plant hormones, and 3.5 kg of sodium alginate. The air-dried soil in this embodiment is naturally air-dried nursery soil.

[0020] Based on the total weight of plant growth-promoting bacteria, the plant growth-promoting bacteria include the following raw materials by weight: Bacillus subtilis 15kg, Bacillus megaterium 25kg, Bacillus polymyxa 3kg, Pseudomonas aeruginosa 30kg, Bacillus shortwave diversicolor 20kg, and Agrobacterium tumefaciens 7kg.

[0021] The plant hormone consists of the following raw materials by weight: 35 kg of cytokinin, 25 kg of gibberellin, and 30 kg of naphthaleneacetic acid. The cytokinin, gibberellin, and naphthaleneacetic acid are dissolved separately in alcohol and then mixed according to their weight ratio to obtain the plant hormone.

[0022] like Figure 1 As shown, the seed-planting brick for floating / submerged plants has a truncated conical structure. The bottom diameter of the seed-planting brick is larger than the top diameter. A through-hole 1 extends from the top to the bottom within the seed-planting brick, with the top diameter of the through-hole 1 being smaller than the bottom diameter. In this embodiment, the seed-planting brick has a bottom diameter of 10cm, a top diameter of 5cm, and a height of 4cm. The through-hole 1 in this embodiment has a top diameter of 2cm and a bottom diameter of 4cm.

[0023] The side surface of the seed-throwing brick is provided with a flared opening for connecting through holes, which extends from the top of the seed-throwing brick to the bottom of the seed-throwing brick.

[0024] This embodiment also provides a method for preparing a seed-throwing brick for floating-leaved / submerged plants, comprising the following steps: Pretreatment: The air-dried soil and kaolin were steam-sterilized at 110℃ for 2 hours, then air-dried and passed through a 10-mesh sieve to obtain pretreated air-dried soil and pretreated kaolin. The wheat straw was dried and crushed to obtain pretreated wheat straw with a length between 1-2 cm.

[0025] Mixing: According to the formula, add the pretreated air-dried soil, pretreated kaolin, pretreated wheat straw, plant growth-promoting bacteria, and plant hormones to the mixer and mix evenly at a speed of 40 r / min for 12.5 min to obtain dry material.

[0026] Pulping: Dissolve sodium alginate in water, let stand for 7.5 minutes, and then add it to the dry material while stirring until a wet material is formed that can be formed into a ball when squeezed and crumbled when rubbed.

[0027] Roll forming: Add wet material into the mold, hold pressure at 10-15MPa for 30 seconds to form, demold, let stand for 10 minutes to set, and obtain green blank.

[0028] Shade-drying: Place the raw bricks in a well-ventilated, dark place with a temperature range of 15-25℃ and a relative humidity range of 50%-70% for shade-drying for 6 days to obtain floating leaf / submerged plant auxiliary planting bricks.

[0029] Example 2 The only difference between this embodiment and Embodiment 1 is that the floating leaf / submerged plant auxiliary seeding brick includes the following raw materials by weight: 60 kg of air-dried soil, 20 kg of kaolin, 10 kg of wheat straw, 10 kg of plant growth-promoting bacteria, 3 kg of plant hormones, and 5 kg of sodium alginate.

[0030] Example 3 The only difference between this embodiment and Embodiment 1 is that the floating leaf / submerged plant auxiliary seeding brick includes the following raw materials by weight: 40 kg of air-dried soil, 10 kg of kaolin, 8 kg of wheat straw, 5 kg of plant growth-promoting bacteria, 1 kg of plant hormones, and 2 kg of sodium alginate.

[0031] Example 4 The only difference between this embodiment and Embodiment 1 is that the air-dried soil in this embodiment is naturally air-dried riverbed mud.

[0032] Example 5 The only difference between this embodiment and Embodiment 1 is that the air-dried soil in this embodiment is naturally air-dried raw soil.

[0033] Example 6 The only difference between this embodiment and Embodiment 1 is that, based on the total weight of the plant growth-promoting bacteria, the plant growth-promoting bacteria include the following raw materials by weight: 10 kg of Bacillus subtilis, 30 kg of Bacillus megaterium, 4 kg of Bacillus polymyxa, 40 kg of Pseudomonas, 25 kg of Shortwave monocytogenes, and 9 kg of Agrobacterium tumefaciens.

[0034] Example 7 The only difference between this embodiment and Embodiment 1 is that, based on the total weight of the plant growth-promoting bacteria, the plant growth-promoting bacteria include the following raw materials by weight: 20 kg of Bacillus subtilis, 20 kg of Bacillus megaterium, 2 kg of Bacillus polymyxa, 20 kg of Pseudomonas, 15 kg of Shortwave Monoclonal, and 5 kg of Agrobacterium tumefaciens.

[0035] Example 8 The only difference between this embodiment and Example 1 is that, based on the total weight of the plant hormone, the plant hormone includes the following raw materials by weight: 30 kg of cytokinin, 30 kg of gibberellin, and 40 kg of naphthaleneacetic acid. The cytokinin, gibberellin, and naphthaleneacetic acid are dissolved separately in alcohol and then mixed according to the weight ratio to obtain the plant hormone.

[0036] Example 9 The only difference between this embodiment and Example 1 is that, based on the total weight of the plant hormone, the plant hormone includes the following raw materials by weight: 40 kg of cytokinin, 20 kg of gibberellin, and 20 kg of naphthaleneacetic acid. The cytokinin, gibberellin, and naphthaleneacetic acid are dissolved separately in alcohol and then mixed according to the weight ratio to obtain the plant hormone.

[0037] Example 10 The only difference between this embodiment and Embodiment 1 is that the length of the pretreated wheat straw is 0.2-0.8 cm.

[0038] Example 11 The only difference between this embodiment and Embodiment 1 is that the length of the pretreated wheat straw is 2.2-2.8 cm.

[0039] Example 12 The only difference between this embodiment and Embodiment 1 is that the preparation method of the floating-leaved / submerged plant auxiliary seed-throwing brick includes the following steps: Pretreatment: The air-dried soil and kaolin were steam-sterilized at 105℃ for 3 hours, then air-dried and passed through a 10-mesh sieve to obtain pretreated air-dried soil and pretreated kaolin. The wheat straw was dried and crushed to obtain pretreated wheat straw with a length between 1-2 cm.

[0040] Mixing: According to the formula, add the pretreated air-dried soil, pretreated kaolin, pretreated wheat straw, plant growth-promoting bacteria, and plant hormones to the mixer and mix evenly at a speed of 40 r / min for 12.5 min to obtain dry material.

[0041] Pulping: Dissolve sodium alginate in water, let stand for 5 minutes, and then add it to the dry material while stirring until a wet material is formed that can be formed into a ball when squeezed and crumbled when rubbed.

[0042] Roll forming: Add wet material into the mold, hold pressure at 10-15MPa for 30 seconds to form, demold, let stand for 10 minutes to set, and obtain green blank.

[0043] Shade-drying: Place the raw bricks in a well-ventilated, dark place with a temperature range of 15-25℃ and a relative humidity range of 50%-70% for shade-drying for 5 days to obtain floating leaf / submerged plant auxiliary planting bricks.

[0044] Example 13 The only difference between this embodiment and Embodiment 1 is that the preparation method of the floating-leaved / submerged plant auxiliary seed-throwing brick includes the following steps: Pretreatment: The air-dried soil and kaolin were steam-sterilized at 108℃ for 2.5h, then air-dried and passed through a 10-mesh sieve to obtain pretreated air-dried soil and pretreated kaolin. The wheat straw was dried and crushed to obtain pretreated wheat straw with a length between 1-2cm.

[0045] Mixing: According to the formula, add the pretreated air-dried soil, pretreated kaolin, pretreated wheat straw, plant growth-promoting bacteria, and plant hormones to the mixer and mix evenly at a speed of 40 r / min for 12.5 min to obtain dry material.

[0046] Pulping: Dissolve sodium alginate in water, let stand for 5 minutes, and then add it to the dry material while stirring until a wet material is formed that can be formed into a ball when squeezed and crumbled when rubbed.

[0047] Roll forming: Add wet material into the mold, hold pressure at 10-15MPa for 30 seconds to form, demold, let stand for 10 minutes to set, and obtain green blank.

[0048] Shade-drying: Place the raw bricks in a well-ventilated, dark place with a temperature range of 15-25℃ and a relative humidity range of 50%-70% for shade-drying for 7 days to obtain floating leaf / submerged plant auxiliary planting bricks.

[0049] Comparative Example Comparative Example 1 The only difference between this comparative example and Example 1 is that the raw materials and preparation method of the floating leaf / submerged plant auxiliary seed-throwing brick do not contain wheat straw and sodium alginate.

[0050] Comparative Example 2 The only difference between this comparative example and Example 1 is that the raw materials and preparation method of the floating leaf / submerged plant auxiliary seed-throwing bricks do not contain plant growth-promoting bacteria.

[0051] Comparative Example 3 The only difference between this comparative example and Example 1 is that the raw materials and preparation method of the floating leaf / submerged plant auxiliary seed-throwing brick do not contain plant hormones.

[0052] Comparative Example 4 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant growth-promoting bacteria, Bacillus subtilis of equal weight is used instead of Bacillus megaterium.

[0053] Comparative Example 5 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant growth-promoting bacteria, Bacillus subtilis of equal weight is used instead of Bacillus polymyxa.

[0054] Comparative Example 6 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant growth-promoting bacteria, Bacillus subtilis of equal weight is used to replace Pseudomonas.

[0055] Comparative Example 7 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant growth-promoting bacteria, Bacillus subtilis of equal weight is used to replace shortwave monocytogenes.

[0056] Comparative Example 8 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant growth-promoting bacteria, Bacillus subtilis of equal weight is used to replace Agrobacterium tumefaciens.

[0057] Comparative Example 9 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant hormone, gibberellin is replaced with an equal weight of cytokinin.

[0058] Comparative Example 10 The only difference between this comparative example and Example 1 is that, in the raw materials and preparation method of the plant hormone, naphthaleneacetic acid is replaced with an equal weight of cytokinin.

[0059] Performance testing The following performance tests were conducted on Examples 1-13 and Comparative Examples 1-10: Twenty seed bricks from each of the embodiments and comparative examples were dropped horizontally from a height of 1 m for testing, and the breakage rate was recorded. The test results are shown in Table 1.

[0060] Submerged plants such as Vallisneria natans and floating-leaved plants were used as experimental plants. The experimental plants were mixed with soil and filled into the through holes of seed-throwing bricks. The mixtures were then randomly thrown into the same river channel, with 20 replicates for each type. The survival rate was then recorded. The experimental results are shown in Table 1.

[0061] Table 1 Combining Example 1 and Comparative Examples 1-10 with Table 1, it can be seen that compared to Example 1, the breakage rate of the seed-planting bricks in Comparative Example 1 is significantly higher, while the survival rates of Vallisneria natans and Nymphaeus lactea in Comparative Examples 2-10 are significantly lower. This indicates that using the raw material ratio, structural design, and preparation method of Example 1 helps to enhance the mechanical properties and durability of the bricks, while significantly improving plant survival and growth efficiency.

[0062] This is likely because the introduction of wheat straw and sodium alginate as reinforcing materials significantly improves the toughness and breakage resistance of the bricks, reducing the risk of breakage during transportation and throwing operations, and making them more suitable for practical engineering applications. The seed-throwing bricks adopt a truncated conical shape, wider at the bottom and narrower at the top, which facilitates quick orientation identification and accurate throwing, and also effectively improves their positioning and anti-overturning ability on the bottom sediment, helping plants to establish stable growth underwater. The addition of plant growth-promoting bacteria and plant hormones to the seed-throwing bricks effectively promotes root development and plant growth in aquatic plants, significantly increasing plant survival rates, shortening the seedling establishment time, and accelerating community formation.

[0063] As can be seen from Examples 1-13 and Table 1, the breakage rate of the seed-throwing bricks in Examples 1-13 is between 65% and 75%, and the survival rates of Vallisneria natans and Nymphoides peltata are both above 85%. This indicates that the raw material ratios and preparation methods within the range of Examples 1-13 all help to enhance the mechanical properties and durability of the bricks, while significantly improving plant survival and growth efficiency.

[0064] Comparing the test data of Examples 1-13, it can be seen that the breakage rate of Example 10 is greater, but the survival rates of Vallisneria natans and Nymphoides peltata are lower. In Example 11, the breakage rate is lower, and the survival rates of Vallisneria natans and Nymphoides peltata are also lower. This indicates that using wheat straw with a length of 1-2 cm helps to further enhance the mechanical properties and durability of the bricks, while significantly improving plant survival and growth efficiency.

[0065] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A type of floating-leaved / submerged plant seed-planting aid brick, characterized in that, The raw materials include the following parts by weight: 40-60 parts air-dried soil, 10-20 parts kaolin, 8-10 parts wheat straw, 5-10 parts plant growth-promoting bacteria, 1-3 parts plant hormones, and 2-5 parts sodium alginate.

2. The floating-leaf / submerged plant auxiliary seed-throwing brick according to claim 1, characterized in that, The air-dried soil refers to any one or more of the following: nursery soil, riverbed mud, and raw soil that have been naturally air-dried.

3. The floating-leaf / submerged plant auxiliary seed-throwing brick according to claim 1, characterized in that, Based on the total weight of the plant growth-promoting bacteria, the plant growth-promoting bacteria include the following raw materials in parts by weight: 10-20 parts of Bacillus subtilis, 20-30 parts of Bacillus megaterium, 2-4 parts of Bacillus polymyxa, 20-40 parts of Pseudomonas, 15-25 parts of Agrobacterium tumefaciens, and 5-9 parts of Agrobacterium rhizogenes.

4. The floating-leaf / submerged plant auxiliary seeding brick according to claim 3, characterized in that, Based on the total weight of the plant hormone, the plant hormone comprises the following raw materials in parts by weight: 30-40 parts of cytokinin, 20-30 parts of gibberellin, and 20-40 parts of naphthaleneacetic acid.

5. The floating-leaf / submerged plant auxiliary seeding brick according to claim 4, characterized in that, The plant hormone is prepared by the following steps: cytokinin, gibberellin, and naphthaleneacetic acid are dissolved in alcohol respectively, and then mixed in a weight ratio to obtain the plant hormone.

6. The floating-leaf / submerged plant auxiliary seed-throwing brick according to claim 1, characterized in that, The floating leaf / submerged plant auxiliary seeding brick has a flat truncated cone structure. The bottom diameter of the seeding brick is larger than the top diameter of the seeding brick. The seeding brick has a through hole (1) that runs from the top to the bottom. The top diameter of the through hole (1) is smaller than the bottom diameter of the through hole (1). The side surface of the seeding brick has a flared opening (2) for connecting the through hole (1). The flared opening (2) extends from the top of the seeding brick to the bottom of the seeding brick.

7. A method for preparing a floating-leaved / submerged plant auxiliary seed-throwing brick according to any one of claims 1-6, characterized in that, Includes the following steps: Pretreatment: The air-dried soil and kaolin were steam-sterilized at 105-110℃ for 2-3 hours, air-dried and sieved to obtain pretreated air-dried soil and pretreated kaolin. The wheat straw was dried and crushed to obtain pretreated wheat straw. Mixing: According to the formula, mix the pretreated air-dried soil, pretreated kaolin, pretreated wheat straw, plant growth-promoting bacteria and plant hormones evenly to obtain dry material; Pulping: Dissolve sodium alginate in water, let stand for 5-10 minutes, and then add it to the dry material with stirring to obtain wet material; Roll forming: Wet material is added to a mold, pressed into shape, demolded, and left to set to obtain a green body; Shade-drying maintenance: Place the raw bricks in a well-ventilated, dark place with a temperature of 15-25℃ and a relative humidity of 50%-70% for shade-drying maintenance for 5-7 days to obtain floating leaf / submerged plant auxiliary planting bricks.

8. The method for preparing the floating-leaved / submerged plant auxiliary seed-throwing brick according to claim 7, characterized in that, The pretreated wheat straw is 1-2 cm in length.

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