Ecological floating bed for saline-alkali soil improvement

Abstract

The utility model provides an ecological floating bed for saline-alkali soil improvement, which comprises a floating body, at least one planting groove is arranged on the floating body, a through hole is arranged at the bottom of the planting groove, a woven bag is arranged in the planting groove, a perlite layer, a substrate layer and an organic soil layer are sequentially arranged in the woven bag from bottom to top, and a plant layer is arranged on the organic soil layer. An underwater fixing unit is arranged below the floating bodies, and the floating bodies are connected to form a floating bed. According to the device, salt can be absorbed in the growth process of plants, the soaking and water changing time can be prolonged, the water changing frequency can be reduced, excessive engineering and maintenance measures are not needed, the desalting effect is achieved, meanwhile, other pollution cannot be introduced, and good economic and environmental benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to saline-alkali soil improvement device technical field, especially relates to a kind of ecological floating bed for saline-alkali soil improvement. BACKGROUND

[0002] The saline-alkali soil in coastal areas of China is widely distributed and has a large area, but the utilization rate is not high. At present, the desalination of saline-alkali soil mainly includes irrigation salt washing, thin film salt separation, application of improver, biological improvement and other technologies.

[0003] Irrigation salt washing is to improve saline-alkali soil by irrigating the soil with fresh water to leach the salt in the soil and inhibit the rise of underground water. In areas with sufficient irrigation, measures such as deep ditch and underground pipe salt discharge can be taken to improve the drainage efficiency and discharge salt in the surface and deep soil. For example, CN 214960946U discloses a hierarchical greening system for saline-alkali soil, which discharges salt by underground pipe and involves plants in the subsequent repair. Acidifying agent is added to the discharge water during the process of salt discharge, which will cause pollution. In addition, the soil and water body must meet the requirements of plant growth in terms of saline-alkalinity, which is a high requirement for plant growth conditions and variety selection matching. SUMMARY

[0004] The utility model is aimed at the above technical problems, and proposes a kind of ecological floating bed for saline-alkali soil improvement, which can absorb salt in the process of plant growth, prolong soaking and water changing time, reduce water changing frequency, and achieve desalination effect without introducing other pollution by unnecessary engineering and maintenance measures, thereby achieving good economic and environmental benefits.

[0005] An ecological floating bed for saline-alkali soil improvement includes a floating body, at least one planting groove is arranged on the floating body, a through hole is arranged at the bottom of the planting groove, a woven bag is arranged in the planting groove, from bottom to top, a perlite layer, a substrate layer and an organic soil layer are sequentially arranged in the woven bag, a plant layer is arranged on the organic soil layer, the floating body is provided in plurality, and the floating bodies are connected to form a floating bed, and an underwater fixing unit is arranged below the floating bed.

[0006] Preferably, the floating body is square, male and female grooves are arranged on opposite edges of the floating body, and a connecting hole is arranged on the floating body, the male and female grooves of adjacent two floating bodies can be connected and matched, and the connecting hole and a bolt matched with the connecting hole are connected.

[0007] Preferably, a reinforcing member is connected to the male and female grooves of the floating body on the outer edge of the floating bed, a through hole is arranged on the reinforcing member, and the through hole and the connecting hole of the floating body are connected by a bolt.

[0008] Preferably, a reinforcing member is connected to the male and female grooves of the floating body on the outer edge of the floating bed, a through hole is arranged on the reinforcing member, and the through hole and the connecting hole of the floating body are connected by a bolt.

[0009] Preferably, the floating body is a PE buoyancy plate.

[0010] Preferably, the woven bag is a non-woven fabric woven bag.

[0011] Preferably, the underwater fixing unit comprises a lifting net arranged at four corners and four edges of the floating bed and a counterweight stone filled in the lifting net.

[0012] Preferably, the plant layer is a plant combination of salicornia and suaeda.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are that:

[0014] In the process of improving and ploughing the saline-alkali soil, the ecological floating bed with mixed planting of salicornia and suaeda improves the salt washing effect and efficiency. On the one hand, with the increase of the water salinity, the color of suaeda changes from green to red, which can indicate the water changing point. On the other hand, salicornia and suaeda are salt gathering plants, which can absorb salt in the growth process, prolong the soaking and water changing time and reduce the water changing frequency without excessive engineering and maintenance measures. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0016] Figure 1 It is the vertical sectional view of the floating body in the utility model;

[0017] Figure 2 It is the plan view of the floating body in the utility model;

[0018] In the above figures: 1, floating body; 2, planting groove; 3, connecting bolt; 4, connecting hole; 5, organic soil layer; 6, substrate layer; 7, perlite layer; 8, plant layer; 9, female groove; 10, male groove. DETAILED DESCRIPTION

[0019] Next, the utility model will be specifically described through exemplary embodiments.

[0020] A kind of ecological floating bed for saline-alkali soil improvement, referring to Figure 1 、 2, including the floating body 1, the floating body 1 is the PE buoyancy board, a plurality of floating bodies 1 are arranged, and the floating bodies 1 are connected to form a floating bed, specifically, the floating body 1 is square, male grooves 10 and female grooves 9 are arranged on opposite edges of the floating body 1, and connecting holes 4 are arranged, the male grooves 10 and the female grooves 9 of adjacent two floating bodies can be connected and matched, and are connected through the connecting holes 4 and connecting bolts 3 matched with the connecting holes, and the outer edges of the floating bed are connected with reinforcing pieces through the male grooves 10 and the female grooves 9 of the floating bodies, and through holes are arranged on the reinforcing pieces and are connected with the connecting holes 4 of the floating bodies through the connecting bolts 3;

[0021] The underwater fixing units are arranged below the floating bodies, the underwater fixing units include lifting nets and counterweight stones and are fixed at four corners and centers of four edges of the floating bed through the connecting bolts 3.

[0022] The floating body 1 is provided with at least one planting groove 2, in the embodiment, four circular placing grooves are arranged on each floating body, through holes are arranged on groove bottoms of the planting grooves 2, and woven bags are arranged in the planting grooves 2, the woven bags are non-woven fabric woven bags;

[0023] In the woven bag, a perlite layer 7, a substrate layer 6 and an organic soil layer 5 are sequentially arranged from bottom to top, the organic soil layer 5 is mixed by agricultural and forestry wastes and saline-alkali original soil at a weight ratio of 4:1, a plant layer 8 is arranged on the organic soil layer 5, the plant layer 8 is a plant combination body composed of salicornia and suaeda, specifically, the seeds of the suaeda and the salicornia are sowed in the planting substrate at a ratio of 1:2, and after germination, the plants are transplanted into the planting grooves 2.

[0024] Table 1 parameters of soaking and washing saline water bodies before and after using the ecological floating bed

[0025]

[0026] As shown in Table 1, in the soaking process of the saline-alkali soil without using the ecological floating bed, the water body conductivity tends to be stable after 7 days of soaking, and after using the ecological floating bed, the water body tends to be stable after 10 days of soaking. As can be seen from the change of the soil conductivity before and after soaking, the desalination effect of the saline-alkali soil using the ecological floating bed is better than that of the saline-alkali soil without using the ecological floating bed. It can be known that although the change ranges of the water body conductivities are similar, the soil desalination degree in the soaking process using the ecological floating bed is high, which indicates that the halophytes absorb the salt in the water body in the soaking process, and the desalination effect is strengthened.

[0027] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An ecological floating bed for saline-alkali soil improvement, characterized in that: The application relates to a floating bed, which comprises floating bodies, at least one planting groove is arranged on the floating bodies, a through hole is arranged on the groove bottom of the planting groove, a woven bag is arranged in the planting groove, from bottom to top, a perlite layer, a substrate layer and an organic soil layer are sequentially arranged in the woven bag, a plant layer is arranged on the organic soil layer, the floating bodies are arranged in plurality, the floating bodies are connected to form the floating bed, and an underwater fixing unit is arranged below the floating bed.

2. The ecological floating bed for salinized land improvement according to claim 1, characterized in that: The floating bodies are square, male and female grooves are arranged on opposite sides of the floating bodies, and connecting holes are arranged, the male and female grooves of adjacent two floating bodies can be connected and matched, and the connecting holes and bolts matched with the connecting holes are connected.

3. The ecological floating bed for salinized land improvement according to claim 2, characterized in that: Reinforcing pieces are connected with the male and female grooves of the floating bodies on the outer edges of the floating bed, through holes are arranged on the reinforcing pieces, and the through holes and the connecting holes of the floating bodies are connected through bolts.

4. The ecological floating bed for salinized land improvement according to claim 1, characterized in that: The floating bodies are PE floating plates.

5. The ecological floating bed for salinized land improvement according to claim 1, characterized in that: The woven bags are non-woven fabric woven bags.

6. The ecological floating bed for salinized land improvement according to claim 1, characterized in that: The underwater fixing unit comprises lifting nets arranged at four corners and four edge centers of the floating bed and counterweight stone blocks filled in the lifting nets.

7. The ecological floating bed for salinized land improvement according to claim 1, characterized in that: The plant layer is a plant combination of salicornia and suaeda.

Images