A wetland slope protection method

Abstract

The present invention relates to the technical field of slope protection, and discloses a method for protecting wetland slopes, comprising the steps of: preparing the slope surface; planting: evenly mixing bermudagrass seeds and clover seeds, and planting bermudagrass and clover on the slope surface of the planting area, and dividing the planting area into a near-water area, a middle area, and a far-water area; the mass ratio of bermudagrass seeds to clover seeds in the near-water area is 4-5:1-2, the mass ratio of bermudagrass seeds to clover seeds in the middle area is 2-3:1-2, and the mass ratio of bermudagrass seeds to clover seeds in the far-water area is 1-2:2-3; and maintenance: field management. The present invention plants bermudagrass and clover on the wetland slope, and divides the slope surface into a near-water area, a middle area, and a far-water area. Different sowing ratios of bermudagrass and clover are used in different areas, and the two vegetation types are adapted to local conditions, so that both types of vegetation can grow better, thereby achieving better slope protection and maximizing aboveground biomass.

Description

Technical Field

[0001] The invention belongs to the technical field of slope protection, and in particular relates to a wetland slope protection method. Background Art

[0002] Wetlands refer to areas where the surface is too wet or water accumulates frequently, and where wetland organisms grow. Slope protection is laid on both sides of the wetland's water bank to prevent the slope from being eroded. It is a general term for various paving and planting methods on the slope surface. Forestry wetland slopes often experience landslides under long-term rain erosion. To prevent the sand and mud caused by landslides from clogging the river channel, existing wetland slope protection technologies include hard revetment slope protection. Although the protection effect is good, it destroys the landscape and ecology. A large number of hard artificial shorelines will also hinder the exchange of organisms between land and water. Another type is the use of slope protection nets. However, due to the unreasonable overall structure of most slope protection nets, the slope protection nets are damaged by the impact of sand and mud, and they do not provide good protection for forestry wetland slopes.

[0003] The prior art discloses a wetland waterfront ecological slope protection structure, which, with reference to Chinese patent CN 117418507A, includes: a fixing mechanism, a control mechanism, a frame mechanism, and other mechanisms; the fixing mechanism is fixedly installed on the frame mechanism; the control mechanism is movably installed on the frame mechanism; the upper side bar A is slidably installed on one side of a rectangular sleeve; the upper side bar B is slidably installed on the other side of the rectangular sleeve; the center block is fixedly installed on the rectangular sleeve; one side of the connecting rod is rotatably installed on the axis of the side block, and the other side is rotatably installed on the axis in the side groove of the center block; the lower side bar A is fixedly installed on one side block; the lower side bar B is fixedly installed on the other side block; the lower side bar A is slidably installed on the lower side bar B; the side block moves, driving the connecting rod to rotate, so that the equipment is opened and laid flat. The prior art also discloses a novel slope protection device for forestry wetland slopes, referring to Chinese patent CN215165237U, which includes a slope protection net fixing frame, a slope protection net, a fixed connecting frame, an auxiliary chain, an auxiliary fixing frame, a fixed connecting ring, an auxiliary connecting ring, and a positioning connecting sleeve. The slope protection net fixing frame is connected to multiple slope protection nets on the inside, and the slope protection net fixing frame has multiple fixed connecting rings on the outside, and the fixed connecting rings are evenly distributed on the outside of the slope protection net fixing frame. The rear side of the fixed connecting ring is connected to the wetland slope. The front side of the fixed connecting frame has a tightening force rod. The outside of the fixed connecting frame has two auxiliary connecting rings, which are symmetrically arranged. The rear side of the fixed connecting frame has a positioning connecting sleeve. The outside of the positioning connecting sleeve is connected to a fastening connecting sleeve, and the fastening connecting sleeve slides on the positioning connecting sleeve. The inside of the positioning connecting sleeve has a fastening screw. Although these structures can protect wetland slopes, they require additional materials to prepare the structure, and these materials only have the effect of slope protection. Summary of the Invention

[0004] In response to the above-mentioned deficiencies in the prior art, the present invention provides a wetland slope protection method. By dividing the slope surface into a near-water area, a middle area, and a far-water area, the sowing ratios of bermudagrass and clover in different areas are different, and the two types of vegetation can grow better according to local conditions, thereby achieving better slope protection and maximizing the above-ground biomass. The present invention solves the problem that the wetland waterfront ecological slope protection structure prepared by the prior art can protect the wetland slope, but additional materials are required when preparing the structure, and these materials only have the effect of slope protection.

[0005] A wetland slope protection method specifically comprises the following steps:

[0006] Slope preparation: Select a planting area at a height of 5 to 10 meters from the slope surface, and prepare the slope surface of the planting area to form an angle of 20 to 30 degrees with the horizontal plane. If the angle is greater than this range, the slope is too steep, and the soil is likely to slide off the slope surface. After planting, the roots and stems of plants are likely to be exposed, affecting plant growth and reducing the slope protection effect. If the angle is less than this range, the slope is too flat, and moisture from the wetland can easily enter the slope soil. The soil moisture content is too high, which can easily cause plant roots and stems to rot.

[0007] Planting: Mix bermudagrass seeds and clover seeds evenly, mix bermudagrass and clover on the slope of the planting area, and divide the planting area into a near-water area, a middle area, and a far-water area from bottom to top; the mass ratio of bermudagrass seeds and clover seeds in the near-water area is 4-5:1-2, the mass ratio of bermudagrass seeds and clover seeds in the middle area is 2-3:1-2, and the mass ratio of bermudagrass seeds and clover seeds in the far-water area is 1-2:2-3. Since the moisture content in the soil in the near-water area is relatively high, the sowing amount of bermudagrass that likes moisture is relatively large; the soil moisture content in the middle area is moderate, and the sowing amount of bermudagrass and clover is basically the same; the soil moisture content in the far-water area is relatively low, the sowing amount of bermudagrass is relatively small, and the sowing amount of clover is relatively large, thereby promoting the effective growth of clover and bermudagrass and better achieving the slope protection effect;

[0008] Maintenance: Field management.

[0009] Preferably, the area ratio of the near water zone, the middle zone and the far water zone is 1-3:2-3:1-2.

[0010] Preferably, after the slope surface is prepared, the slope surface is backfilled with nutrient soil; backfilling the nutrient soil can improve the soil quality of the slope surface.

[0011] Preferably, the backfill thickness of the nutrient soil is 8 to 15 cm; if the backfill thickness is too high, the nutrients will be excessive, which will easily cause soil eutrophication and waste raw materials; if the backfill thickness is too low, the nutrients will be insufficient, the planted plants will grow slowly and the yield will be low.

[0012] Preferably, the nutrient soil is composed of the following raw materials in parts by weight: 100-200 parts of soybean meal, 10-20 parts of fish bone meal, 20-30 parts of wheat bran and 0.2-0.5 parts of yeast.

[0013] Preferably, the preparation method of the nutrient soil is: after mixing the raw materials in the formula amount, fermenting at 28-32° C. for 8-12 hours to obtain the nutrient soil.

[0014] Preferably, ecological concrete is laid on the slope of the planting area before interplanting bermudagrass and clover.

[0015] Preferably, the ecological concrete is composed of the following raw materials in parts by weight: 800-1000 parts of crushed stone, 200-230 parts of cement, 23-28 parts of silica powder, 2-2.8 parts of water reducing agent, and 40-48 parts of water. The water reducing agent is an aliphatic high-efficiency water reducing agent.

[0016] Preferably, the preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Taking into account the growth habits of clover and bermudagrass, the present invention divides the slope into the near-water area, the middle area, and the far-water area. The sowing ratios of bermudagrass and clover are different in different areas. According to local conditions, both vegetation types can grow better and achieve a soil coverage rate of 100% in a short time, thereby achieving a better slope protection effect. In the near-water area, due to the high moisture content in the soil, the sowing amount of bermudagrass, which prefers moisture, is large; in the middle area, the soil moisture content is moderate, and the sowing amount of bermudagrass and clover is basically the same; in the far-water area, the soil moisture content is low, the sowing amount of bermudagrass is small, and the sowing amount of clover is large, thereby promoting the effective growth of clover and bermudagrass and better achieving the slope protection effect. At the same time, clover and bermudagrass are both forage grasses, and a large amount of forage grass can be harvested while protecting the slope to provide food for livestock. While achieving a good slope protection effect, the present invention can also provide a large amount of forage grass for animal husbandry, alleviating the competition for food between humans and animals.

[0019] 2. The present invention plants bermudagrass and clover on the wetland slopes. The rhizomes of the clover are distributed underground, and the runners of the bermudagrass are distributed on the surface. The plant rhizomes are distributed at different soil depths, achieving sand fixation at different depths. The slope protection effect is better than that of a slope protection system in which the rhizomes are distributed at the same soil depth and only the depth at which the rhizomes are distributed is used for sand fixation. In addition, clover and bermudagrass absorb nutrients from different soil depths, resulting in less competition for nutrients and being beneficial to the growth of clover and bermudagrass. The nitrogen-fixing rhizobia of clover can absorb nitrogen from the air and convert it into a form that can be used by plants. Therefore, clover can also achieve nitrogen fixation in the underground soil, thereby providing conditions for the growth of bermudagrass and promoting their joint growth. This in turn allows the two to jointly play a synergistic role in protecting the wetland slopes, reduces the application of nitrogen fertilizers, reduces the probability of soil compaction, and protects the soil environment.

[0020] 3. Compared with the existing technology, the present invention conducts ecological selection based on plant selection and plant growth, and achieves the protective effect of wetland slopes without the need for structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A wetland slope protection method is provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Unless otherwise specified, the methods described in the embodiments of the present invention are conventional methods. The materials and reagents used are all commercially available unless otherwise specified.

[0024] The yeast used in the examples and comparative examples of the present invention was Angel Yeast, which was purchased from Wuhan Jiyesheng Chemical Co., Ltd.

[0025] Example 1

[0026] A wetland slope protection method specifically comprises the following steps:

[0027] S1. Slope Preparation: Select a planting area 5 meters above the slope and adjust the slope to a 20° angle with the horizontal. After the slope is prepared, backfill the slope with nutrient soil and then lay the ecological concrete.

[0028] The backfill thickness of the nutrient soil is 8 cm. The nutrient soil is composed of the following raw materials in parts by weight: 100 parts soybean meal, 10 parts fish bone meal, 20 parts wheat bran, and 0.2 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 28°C for 8 hours to obtain the nutrient soil.

[0029] The eco-concrete is composed of the following raw materials by weight: 800 parts of crushed stone, 200 parts of cement, 23 parts of silica powder, 2 parts of water reducer, and 40 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5 to 8 mm. ， The particle size of silica powder is 30nm 。

[0030] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0031] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover on the slope of the planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 1:2:1.

[0032] The mass ratio of the bermudagrass seeds to the clover seeds in the near-water zone is 4:1, the mass ratio of the bermudagrass seeds to the clover seeds in the middle zone is 2:1, and the mass ratio of the bermudagrass seeds to the clover seeds in the far-water zone is 1:2;

[0033] S3. Maintenance: field management.

[0034] Example 2

[0035] A wetland slope protection method specifically comprises the following steps:

[0036] S1. Slope Preparation: Select a planting area 5 meters above the slope and prepare it at a 20° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0037] The backfill thickness of the nutrient soil is 8 cm. The nutrient soil is composed of the following raw materials in parts by weight: 120 parts soybean meal, 12 parts fish bone meal, 22 parts wheat bran, and 0.3 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 29°C for 9 hours to obtain the nutrient soil.

[0038] The ecological concrete is composed of the following raw materials by weight: 850 parts of crushed stone, 210 parts of cement, 25 parts of silica powder, 2.2 parts of water reducer, and 42 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5 to 8 mm. ， The particle size of silica powder is 30nm 。

[0039] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0040] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover together in a planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 1:3:2.

[0041] The mass ratio of the bermudagrass seeds to the clover seeds in the near-water zone is 2:1, the mass ratio of the bermudagrass seeds to the clover seeds in the middle zone is 3:2, and the mass ratio of the bermudagrass seeds to the clover seeds in the far-water zone is 2:3;

[0042] S3. Maintenance: field management.

[0043] Example 3

[0044] A wetland slope protection method specifically comprises the following steps:

[0045] S1. Slope Preparation: Select a planting area 8 meters above the slope and prepare it at a 25° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0046] The backfill thickness of the nutrient soil is 12 cm. The nutrient soil is composed of the following raw materials in parts by weight: 140 parts soybean meal, 14 parts fish bone meal, 24 parts wheat bran, and 0.3 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 30°C for 10 hours to obtain the nutrient soil.

[0047] The ecological concrete is composed of the following raw materials by weight: 900 parts of crushed stone, 220 parts of cement, 26 parts of silica powder, 2.6 parts of water reducer, and 46 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5 to 8 mm. ， The particle size of silica powder is 30nm 。

[0048] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0049] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover together in a planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 2:3:1.

[0050] The mass ratio of the bermudagrass seeds to the clover seeds in the near-water zone is 5:1, the mass ratio of the bermudagrass seeds to the clover seeds in the middle zone is 3:1, and the mass ratio of the bermudagrass seeds to the clover seeds in the far-water zone is 2:3;

[0051] S3. Maintenance: field management.

[0052] Example 4

[0053] A wetland slope protection method specifically comprises the following steps:

[0054] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0055] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 160 parts soybean meal, 16 parts fish bone meal, 26 parts wheat bran, and 0.4 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 31°C for 11 hours to obtain the nutrient soil.

[0056] The ecological concrete is composed of the following raw materials by weight: 950 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0057] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0058] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover together in a planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 3:3:1.

[0059] The mass ratio of the bermudagrass seeds to the clover seeds in the near-water zone is 5:2, the mass ratio of the bermudagrass seeds to the clover seeds in the middle zone is 1:1, and the mass ratio of the bermudagrass seeds to the clover seeds in the far-water zone is 1:3;

[0060] S3. Maintenance: field management.

[0061] Example 5

[0062] A wetland slope protection method specifically comprises the following steps:

[0063] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0064] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0065] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0066] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0067] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant bermudagrass and clover in the planting area, and divide the planting area into the near-water area, the middle area, and the far-water area from bottom to top. The area ratio of the near-water area, the middle area, and the far-water area is 3:3:2. Figure 1 .

[0068] The mass ratio of the bermudagrass seeds and the clover seeds in the near-water zone is 5:2, the mass ratio of the bermudagrass seeds and the clover seeds in the middle zone is 3:2, and the mass ratio of the bermudagrass seeds and the clover seeds in the far-water zone is 2:3.

[0069] S3. Maintenance: field management.

[0070] Comparative Example 1 (Bermudagrass)

[0071] A wetland slope protection method specifically comprises the following steps:

[0072] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0073] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0074] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0075] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0076] S2. Planting: Sow Bermuda grass seeds in the planting area.

[0077] S3. Maintenance: field management.

[0078] Comparative Example 2 (only clover)

[0079] A wetland slope protection method specifically comprises the following steps:

[0080] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0081] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0082] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0083] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0084] S2. Planting: Sow clover in the planting area.

[0085] S3. Maintenance: field management.

[0086] Comparative Example 3 (Mixed planting of Bermuda grass and clover, regardless of region)

[0087] A wetland slope protection method specifically comprises the following steps:

[0088] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0089] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0090] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0091] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0092] S2. Planting: Evenly mix the bermudagrass seeds and the clover seeds, and plant the bermudagrass and the clover in a planting area, wherein the mass ratio of the bermudagrass seeds to the clover seeds is 1:1.

[0093] S3. Maintenance: field management.

[0094] Comparative Example 4 (divided by region, with less bermudagrass and more clover near the water)

[0095] A wetland slope protection method specifically comprises the following steps:

[0096] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0097] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0098] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0099] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0100] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover together in a planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 3:3:2.

[0101] The mass ratio of the bermudagrass seeds and the clover seeds in the near-water zone is 1:4, the mass ratio of the bermudagrass seeds and the clover seeds in the middle zone is 3:2, and the mass ratio of the bermudagrass seeds and the clover seeds in the far-water zone is 2:3.

[0102] S3. Maintenance: field management.

[0103] Comparative Example 5 (Divided by region, more bermudagrass and less clover in the area far from the water)

[0104] A wetland slope protection method specifically comprises the following steps:

[0105] S1. Slope Preparation: Select a planting area 10 meters above the slope and prepare it at a 30° angle to the horizontal. After preparing the slope, backfill it with nutrient soil and then lay ecological concrete in the planting area.

[0106] The backfill thickness of the nutrient soil is 15 cm. The nutrient soil is composed of the following raw materials in parts by weight: 200 parts soybean meal, 20 parts fish bone meal, 30 parts wheat bran, and 0.5 parts yeast. The nutrient soil is prepared by mixing the raw materials in the formula and fermenting at 32°C for 12 hours to obtain the nutrient soil.

[0107] The eco-concrete is composed of the following raw materials by weight: 1000 parts of crushed stone, 230 parts of cement, 28 parts of silica powder, 2.8 parts of water reducer, and 48 parts of water. The water reducer is an aliphatic high-efficiency water reducer purchased from Nantong Runfeng Petrochemical Co., Ltd. The particle size of the crushed stone is 5-8 mm. ， The particle size of silica powder is 30nm 。

[0108] The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

[0109] S2. Planting: Mix bermudagrass seeds and clover seeds evenly, plant the bermudagrass and clover together in a planting area, and divide the planting area into a near-water zone, a middle zone, and a far-water zone from bottom to top. The area ratio of the near-water zone, the middle zone, and the far-water zone is 3:3:2.

[0110] The mass ratio of the bermudagrass seeds and the clover seeds in the near-water zone is 1:4, the mass ratio of the bermudagrass seeds and the clover seeds in the middle zone is 3:2, and the mass ratio of the bermudagrass seeds and the clover seeds in the far-water zone is 4:1.

[0111] S3. Maintenance: field management.

[0112] Table 1 Plant coverage in different groups

[0113] Time required for 100% plant coverage (days) Example 1 25 Example 2 27 Example 3 28 Example 4 23 Example 5 22 Comparative Example 1 62 Comparative Example 2 59 Comparative Example 3 46 Comparative Example 4 39 Comparative Example 5 37

[0114] As can be seen from Table 1, Examples 1 to 5 of the present invention divide the slope surface into a near-water area, a middle area, and a far-water area, and sow different proportions of bermudagrass and clover in different areas, so as to adapt to local conditions and enable both vegetation to grow better. The soil coverage rate reaches 100% in a short time, thereby achieving a better slope protection effect. Compared with Examples 1 to 5, in Comparative Example 1, only bermudagrass was planted on the wetland slope, and it took a long time for the plant coverage to reach 100%. This may be because when bermudagrass was planted alone, the utilization rate of nitrogen in the soil was low, resulting in slow growth of bermudagrass; Compared with Examples 1 to 5, in Comparative Example 2, only clover was planted on the wetland slope, and it took a long time for the plant coverage to reach 100%. This may be because when clover was planted alone, the rhizomes of clover were distributed underground, and only the depth of the rhizomes was fixed, and the surface layer of the slope soil could not be fixed. Soil loss on the slope would cause the rhizomes of clover to be exposed, affecting growth; Compared with Examples 1 to 5, in Comparative Example 3, bermudagrass and clover were mixed, but no distinction was made between near-water, middle and far-water areas. It took a long time for the plant coverage to reach 100%, which may be due to the fact that This may be because suitable vegetation is not planted as much as possible in areas with appropriate soil moisture content. Compared with Examples 1 to 5, although Example 4 is divided into near-water, middle and far-water areas, there are fewer bermudagrass and more clover in the near-water area, and it takes a long time to achieve 100% plant coverage. This may be because the soil moisture content suitable for the growth of bermudagrass and clover is not given according to their growth habits. The soil moisture content in the near-water area is higher, but there are fewer bermudagrass, and their role is not maximized. Compared with Examples 1 to 5, although Example 5 is divided into near-water, middle and far-water areas, there are more bermudagrass and less clover in the far-water area, and it takes a long time to achieve 100% plant coverage. This may be because the soil moisture content in the far-water area is lower, but there are more bermudagrass, which limits the growth of bermudagrass.

[0115] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0116] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A wetland slope protection method, characterized in that: The specific steps include: Slope preparation: Select a planting area 5 to 10 meters above the slope and prepare the slope to form an angle of 20 to 30 degrees with the horizontal plane. Planting: Mix bermudagrass seeds and clover seeds evenly, lay ecological concrete on the slope of the planting area, and then mix bermudagrass and clover on the slope of the planting area, and divide the planting area into a near-water area, an intermediate area, and a far-water area from bottom to top; the mass ratio of bermudagrass seeds and clover seeds in the near-water area is 4-5:1-2, the mass ratio of bermudagrass seeds and clover seeds in the intermediate area is 2-3:1-2, and the mass ratio of bermudagrass seeds and clover seeds in the far-water area is 1-2:2-3; the area ratio of the near-water area, the intermediate area, and the far-water area is 1-3:2-3:1-2; Maintenance: Field management.

2. A wetland slope protection method according to claim 1, characterized in that: After the slope surface is tidied, backfill the slope with nutrient soil.

3. A wetland slope protection method according to claim 2, characterized in that: The backfill thickness of the nutrient soil is 8 to 15 cm.

4. A wetland slope protection method according to claim 3, characterized in that: The nutrient soil is composed of the following raw materials in parts by weight: 100-200 parts of soybean meal, 10-20 parts of fish bone powder, 20-30 parts of wheat bran and 0.2-0.5 parts of yeast.

5. A wetland slope protection method according to claim 4, characterized in that: The preparation method of the nutrient soil comprises the following steps: mixing the raw materials in a prescribed amount, and fermenting the mixture at 28° C. to 32° C. for 8 to 12 hours to obtain the nutrient soil.

6. A wetland slope protection method according to claim 1, characterized in that: The ecological concrete is composed of the following raw materials in parts by weight: 800-1000 parts of crushed stone, 200-230 parts of cement, 23-28 parts of silicon dioxide powder, 2-2.8 parts of water reducing agent, and 40-48 parts of water.

7. A wetland slope protection method according to claim 6, characterized in that: The preparation method of the ecological concrete is: mixing the raw materials in the formula amount evenly to obtain the ecological concrete.

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