Spartina alterniflora prevention and control method based on carbonized hedge slope protection

Abstract

The invention discloses a spartina alterniflora prevention and control method based on carbonized hedge slope protection. The method comprises the following steps that spartina alterniflora is removed; primary local plant sowing; anchoring the carbonized bamboo fence; sowing local plants for the second time; and covering vegetation. According to the spartina alterniflora prevention and control method based on the carbonized bamboo fence slope protection, by sowing the suaeda salsa and / or reed seeds twice and laying the carbonized bamboo fence slope protection, on one hand, relapse of spartina alterniflora on the two sides of the coastal harbor road is effectively prevented, and on the other hand, the effects of protecting the slope, fixing soil and forming an ecological vegetation replacement layer are achieved; the slope protection stability and the ecological friendliness are enhanced, the long-acting slope protection effect is achieved, the later maintenance workload and the management cost are reduced, the cost is low, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of ecological restoration, and in particular to a method for preventing and controlling Spartina alterniflora based on carbonized bamboo fence slope protection. Background Art

[0002] Spartina alterniflora often invades coastal areas along harbor channels.

[0003] Most existing technologies use physical control to control Spartina alterniflora, such as mowing, flooding, mulching, etc. After the control of Spartina alterniflora is completed, the native vegetation is restored.

[0004] The Chinese patent with publication number CN 101176442A discloses a method for controlling Spartina alterniflora by integrated technology of mowing and water level regulation, which uses a comprehensive control method of mowing and water level regulation to control Spartina alterniflora by inhibiting its growth. The Chinese patent with publication number CN 117678447A discloses a method for controlling Spartina alterniflora by shading and covering with film, which controls Spartina alterniflora by mowing Spartina alterniflora, dividing the area into zones, and then covering with a light-shielding film for more than 75 days.

[0005] A Chinese patent with publication number CN 111527819B discloses a method for repairing Suaeda salsa in coastal wetlands, which improves the living environment of Suaeda salsa by setting grids woven from plants on the coastal wetlands to form grid units and arranging pit micro-topography within the grids.

[0006] The above methods for controlling Spartina alterniflora are not suitable for the control of Spartina alterniflora in the coastal harbor area on both sides, and the effect on the restoration of native vegetation is also poor. They cannot effectively inhibit the recurrence of Spartina alterniflora and are costly. Summary of the invention

[0007] The present invention can solve the above-mentioned problems existing in the prior art of Spartina alterniflora control in areas on both sides of coastal harbors by providing a method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection.

[0008] In order to solve the above technical problems, the present invention provides a method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection, comprising the following steps:

[0009] (1) Spartina alterniflora removal: Manual removal of Spartina alterniflora along both sides of the coastal harbor;

[0010] (2) Primary sowing: sowing Suaeda salsa and / or Phragmites australis seeds on both sides of the coastal harbor channel after the removal of Spartina alterniflora;

[0011] (3) Anchoring the carbonized bamboo fence: The carbonized bamboo fence was laid on the coastal harbor channel after the Spartina alterniflora was removed, and fixed on the slope with 30 cm long anchor nails;

[0012] (4) Secondary sowing: sowing Suaeda salsa and / or Phragmites australis seeds on both sides of the coastal harbor after laying carbonized bamboo fences;

[0013] (5) Vegetation coverage: After the seeds sown in steps (2) and (4) germinate, they extend from the gaps in the carbonized bamboo fence and grow naturally, covering the areas on both sides of the coastal harbor.

[0014] In a preferred embodiment of the present invention, the carbonized bamboo fence is a grid-like structure woven from carbonized bamboo strips.

[0015] In a preferred embodiment of the present invention, the specifications of the carbonized bamboo fence are: length 2-3m, width 2-3m.

[0016] In a preferred embodiment of the present invention, two adjacent transverse carbonized bamboo strips and two adjacent longitudinal carbonized bamboo strips of the carbonized bamboo fence are crossed to form a gap with a length of 10-15 mm and a width of 10-15 mm.

[0017] In a preferred embodiment of the present invention, the width of the transverse carbonized bamboo strips and the longitudinal carbonized bamboo strips is 5 cm.

[0018] In a preferred embodiment of the present invention, the amount of the first sowing is greater than the amount of the second sowing.

[0019] In a preferred embodiment of the present invention, the total amount of the first sowing and the second sowing is 3-5 kg / mu.

[0020] The beneficial effects of the present invention are as follows: the present invention is a method for preventing and controlling Spartina alterniflora based on carbonized bamboo fence slope protection, which, by sowing Suaeda salsa and / or reed seeds twice and laying carbonized bamboo fence slope protection, can effectively prevent the recurrence of Spartina alterniflora in the areas on both sides of the coastal harbor channel on the one hand, and on the other hand, play the role of slope protection and soil consolidation and forming an ecological vegetation replacement layer, thereby enhancing the stability and eco-friendliness of the slope protection, achieving a long-term slope protection effect, reducing the later maintenance workload and management costs, and having low cost and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the carbonized bamboo fence slope protection of the present invention;

[0022] The markings of the components in the accompanying drawings are as follows: 10. Carbonized bamboo fence; 20. Anchor nail. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0024] The invention discloses a method for preventing and controlling Spartina alterniflora based on carbonized bamboo fence slope protection, comprising the following steps:

[0025] (1) Removal of Spartina alterniflora: Manually uproot Spartina alterniflora on both sides of the coastal harbor to minimize the recurrence problem caused by its root regeneration.

[0026] (2) Sowing once: 2-3 kg per mu is used to evenly sow Suaeda salsa and / or Phragmites australis seeds on both sides of the coastal harbor after the removal of Spartina alterniflora. Preferably, Suaeda salsa seeds are sown. Suaeda salsa has a well-developed root system, which can not only effectively occupy the growth space of the root system of Spartina alterniflora, but also help to solidify the soil and prevent soil erosion.

[0027] (3) Anchoring carbonized bamboo fence: Carbonized bamboo strips with a width of 5 cm are woven into a rectangular grid structure with a length of 2-3 m and a width of 2-3 m in the horizontal and vertical directions, and the adjacent two horizontal carbonized bamboo strips and the adjacent two vertical carbonized bamboo strips are crossed to form a gap with a length of 10-15 mm and a width of 10-15 mm. The design of the gap can, on the one hand, effectively block the invasion of the tubers of Spartina alterniflora in the water flow. During the rise and fall of the tide, the barrier layer formed by the bamboo fence can prevent the tubers of Spartina alterniflora from contacting the soil, thereby preventing them from germinating; on the other hand, the gap can allow the seedlings of Suaeda salsa and / or Phragmites australis to extend and grow; in addition, the porous surface formed by the bamboo fence is also conducive to the habitat of benthic organisms such as crabs, further promoting the ecological balance of the harbor area.

[0028] Carbonized bamboo fences made of carbonized bamboo strips have excellent corrosion resistance and a service life of up to 2 years, making them suitable for long-term retention in water flow impact areas. After 2 years, they will be gradually replaced by vegetation growth, leaving no blank growth space for Spartina alterniflora, thereby reducing the risk of recurrence of Spartina alterniflora in areas along both sides of the harbor.

[0029] The carbonized bamboo fence is laid on both sides of the coastal harbor channel after the Spartina alterniflora is removed, and is fixed with anchor nails 20 to ensure that the carbonized bamboo fence will not be washed away by the water flow.

[0030] The laying of the carbonized bamboo fence 10 can protect the embankment and consolidate the soil on the one hand, and can also block the Spartina alterniflora that rushes from the water area to the areas on both sides of the coastal harbor, preventing its roots from contacting the soil, thereby inhibiting its growth.

[0031] (4) Secondary sowing: 1-2 kg of Suaeda salsa and / or Phragmites australis seeds are evenly sown on both sides of the coastal harbor after the carbonized bamboo fence 10 is laid. Preferably, the mass ratio of Suaeda salsa and Phragmites australis is 1:1. The secondary sowing amount is less than the primary sowing amount. The secondary sowing can further improve the uniformity of sowing, ensure that Suaeda salsa and / or Phragmites australis seedlings grow and stretch out in the gap area of ​​the carbonized bamboo fence, and form a new vegetation layer. The vegetation layer and the carbonized bamboo fence work together to occupy the living space of Spartina alterniflora and prevent its recurrence.

[0032] (5) Vegetation coverage: As time goes by, the seeds sown in steps (2) and (4) germinate, extend from the gaps in the carbonized bamboo fence and grow naturally, covering the areas on both sides of the coastal harbor, inhibiting the recurrence of Spartina alterniflora and laying the foundation for subsequent ecological restoration.

[0033] Example 1

[0034] In the area on both sides of the harbor channel in Dafeng, Yancheng, after uprooting Spartina alterniflora, 2 kg of Suaeda salsa seeds were evenly sown per mu, and then carbonized bamboo fences were laid and fixed firmly with anchor nails, and finally 1 kg of Suaeda salsa seeds were sown again per mu. It was observed that the carbonized bamboo fences effectively blocked the roots of Spartina alterniflora from contacting the soil on both sides of the harbor channel after the high tide, and there was no colonization of Spartina alterniflora within 1 year. At the same time, Suaeda salsa gradually grew and covered the beach surface, with significant slope protection effect and significantly reduced the recurrence rate of Spartina alterniflora.

[0035] Example 2

[0036] In the test conducted in the area of ​​Rudong with strong winds and waves, after uprooting Spartina alterniflora, 3kg of Suaeda salsa seeds were evenly sown per mu, and then carbonized bamboo fences were laid and fixed firmly with anchor nails. Finally, 2kg of Suaeda salsa and reed seeds were sown again per mu. The carbonized bamboo fence slope protection was partially damaged for the first time under the impact of the tide. The carbonized bamboo fence was reinforced by increasing the density of anchor nails. After the repair, the bamboo fence operated normally and continued to block the roots of Spartina alterniflora. Six months later, Suaeda salsa and reeds had completely covered the beach, the bamboo fence gradually decomposed, and the vegetation formed a good slope protection effect.

[0037] The present invention realizes effective prevention of recurrence of Spartina alterniflora in the areas on both sides of the harbor channel through carbonized bamboo fence slope protection, with low cost, reducing the high cost problem of traditional wooden pile revetments, and realizes the dual effects of blocking the rhizomes of Spartina alterniflora in the water flow and restoring the ecology through the pore structure of the bamboo fence. The carbonization treatment of the bamboo fence prolongs the service life of the material, and at the same time, combined with native plants such as Suaeda salsa and reed, the slope protection stability and eco-friendliness are enhanced.

[0038] The present invention provides an effective ecological solution for the control and prevention of recurrence of Spartina alterniflora in the coastal harbor area on both sides. The method utilizes the structure of bamboo fences to prevent the tubers of Spartina alterniflora from contacting the soil and recurring, and is supplemented by the natural growth of vegetation such as Suaeda salsa and reeds to achieve a long-term slope protection effect, reduce the later maintenance workload and management costs, and has strong practicality.

[0039] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection, characterized in that: The steps include: (1) Spartina alterniflora removal: Remove Spartina alterniflora from the coastal areas on both sides of the harbor; (2) Sowing of plants in this plan: sowing seeds of Suaeda salsa and / or Phragmites australis on both sides of the coastal harbor channel after the removal of Spartina alterniflora; (3) Anchoring the carbonized bamboo fence: laying the carbonized bamboo fence on both sides of the coastal harbor channel after removing the Spartina alterniflora and fixing it with anchor nails; (4) Secondary sowing: sowing Suaeda salsa and / or Phragmites australis seeds on both sides of the coastal harbor after laying carbonized bamboo fences; (5) Vegetation coverage: After the seeds sown in steps (2) and (4) germinate, they extend from the gaps in the carbonized bamboo fence and grow naturally, covering the areas on both sides of the coastal harbor.

2. The method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 1, characterized in that: The carbonized bamboo fence is a grid-like structure woven from carbonized bamboo strips.

3. A method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 2, characterized in that: The specifications of the carbonized bamboo fence are: length 2-3m, width 2-3m.

4. The method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 3, characterized in that: Two adjacent transverse carbonized bamboo strips and two adjacent longitudinal carbonized bamboo strips of the carbonized bamboo fence are crossed to form a gap with a length of 10-15 mm and a width of 10-15 mm.

5. The method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 4, characterized in that: The width of the transverse carbonized bamboo strips and the longitudinal carbonized bamboo strips is 5 cm.

6. The method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 1, characterized in that: The amount of the first sowing is greater than the amount of the second sowing.

7. The method for controlling Spartina alterniflora based on carbonized bamboo fence slope protection according to claim 6, characterized in that: The total amount of the first sowing and the second sowing is 3-5 kg / mu.

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