Device for transforming ecological environment of farmland drainage ditch base

Abstract

The invention discloses a farmland drainage ditch base ecological environment transformation device, and relates to the technical field of drainage ditch ecological environment transformation, the farmland drainage ditch base ecological environment transformation device comprises a plurality of transformation main bodies, and the transformation main bodies are used for being installed at the ditch bottom of a drainage ditch main body; at least one filler area and at least one plant area are arranged in the transformation main body, the filler area is filled with filler, and aquatic plants are planted in the plant area; water in the drainage ditch main body at least passes through one filler area and one plant area when passing through the transformation main body. According to the invention, the ecological environment of the base of the existing drainage ditch main body can be transformed, so that pollutants such as impurities, nitrogen and phosphorus in water can be effectively removed.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage ditch ecological environment transformation, and in particular to a device for transforming the ecological environment of a farmland drainage ditch base. Background Art

[0002] Currently, non-point source pollution from farmland has become a significant factor affecting the water quality of my country's river basins. Furthermore, in recent years, my country has intensified its efforts to develop high-standard farmland, providing strong support for mechanized production and increased grain yields. High-standard farmland construction typically involves filling in and reclaiming ponds and low-lying areas to maintain large, contiguous fields. Consequently, drainage ditches are replaced with straight, hard-surfaced channels. While this reduces farmland occupation, it creates more limited ecological space for drainage, further restricting the control of farmland drainage pollution. Ecological ditches are the most widely used technology for controlling non-point source pollutants in farmland drainage. They utilize the filtration, precipitation, adsorption, and degradation properties of soil, plants, and microorganisms to effectively purify pollutants such as nitrogen and phosphorus. However, in high-standard farmland construction, to ensure smooth drainage and overall field stability and safety, hard-surfaced channels are generally used, making the construction of ecological ditches in most fields impractical.

[0003] Therefore, there is an urgent need in this field for a device for transforming the ecological environment of the base of farmland drainage ditches to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for transforming the ecological environment of the base of farmland drainage ditches to solve the problems existing in the above-mentioned prior art, to transform the ecological environment of the existing drainage ditch body, and to effectively remove impurities and pollutants such as nitrogen and phosphorus in the water.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention discloses a device for transforming the ecological environment of the base of a farmland drainage ditch, comprising a plurality of transformation bodies, wherein the transformation bodies are used to be installed on the bottom of the drainage ditch body;

[0007] At least one filler area and at least one plant area are provided inside the modified main body, wherein the filler area is filled with fillers and the plant area is planted with aquatic plants;

[0008] When the water in the drainage ditch body passes through the modified body, it will pass through at least one of the filler areas and one of the plant areas.

[0009] Preferably, the modified body includes an outer frame, a plurality of perforated flow-blocking and water-permeable plates are provided in the outer frame, a plurality of first water-permeable holes are provided on the perforated flow-blocking and water-permeable plates, and the perforated flow-blocking and water-permeable plates separate the interior of the outer frame into at least one filler area and at least one plant area.

[0010] Preferably, the outer frame is a rectangular frame, a central flow guide stabilizing tube is fixed at the center of the outer frame, four perforated flow baffles and water permeable plates are provided, the first ends of the four perforated flow baffles and water permeable plates are fixed to the outer wall of the central flow guide stabilizing tube, and the second ends of the four perforated flow baffles and water permeable plates are respectively fixed to the four inner corners of the outer frame;

[0011] The four perforated flow-blocking and water-permeable plates separate the interior of the outer frame into two filling areas and two plant areas.

[0012] Preferably, the two filling areas are arranged relative to each other, and the two plant areas are arranged relative to each other.

[0013] Preferably, a plurality of second water-permeable holes are provided on both sides of the central flow-guiding and stabilizing tube, and the interior of the central flow-guiding and stabilizing tube is connected with the plant areas on both sides through the second water-permeable holes.

[0014] Preferably, the length of one side of the outer frame is 0.5m-1.0m, the height of the outer frame is 0.3m-0.5m, and the wall thickness of the outer frame is 5mm-6mm;

[0015] The height of the perforated flow-blocking and water-permeable plate is 0.3m-0.5m, and the wall thickness of the perforated flow-blocking and water-permeable plate is 5mm-6mm;

[0016] The top surface of the central flow-guiding and stabilizing tube is flush with the top surface of the outer frame; or the top surface of the central flow-guiding and stabilizing tube is higher than the top surface of the outer frame, and the distance between the top surface of the central flow-guiding and stabilizing tube and the top surface of the outer frame does not exceed 0.1 m;

[0017] The inner diameter of the central flow-guiding stabilizing tube is 1 / 4-1 / 3 of the length of one side of the outer frame.

[0018] Preferably, the filler in the filler area includes one or more of gravel, zeolite, volcanic rock and glass pumice;

[0019] Aquatic plants in the flora include irises.

[0020] Preferably, the upper surface of the filling area is used for planting aquatic plants; or a geomat is installed on the upper surface of the filling area;

[0021] A backfill soil layer is provided in the plant area.

[0022] Preferably, the drainage ditch body is an ecological ditch or a hard drainage ditch.

[0023] Preferably, a mounting groove is provided at the bottom of the drainage ditch body, and the modified body is installed in the mounting groove;

[0024] The drainage ditch main body is connected with a farmland drainage pipe.

[0025] Compared with the prior art, the present invention has achieved the following technical effects:

[0026] The present invention can place the transformation body at the bottom of the drainage ditch body. When water flows through the drainage ditch body, the water will pass through the transformation body. Through the filler in the filler layer and the aquatic plants in the plant layer in the transformation body, impurities in the water can be filtered, precipitated and adsorbed, and pollutants such as nitrogen and phosphorus can be absorbed and degraded, thereby improving the ecological environment of the drainage ditch body base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a top view of a device for improving the ecological environment at the base of a farmland drainage ditch according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a transformation body in a device for transforming the ecological environment at the base of a farmland drainage ditch according to an embodiment of the present invention;

[0030] Figure 3 A top view of a transformation body in a device for transforming the ecological environment at the base of a farmland drainage ditch according to an embodiment of the present invention;

[0031] Figure 4 for Figure 3 AA section view in;

[0032] Figure 5 for Figure 3 BB cross-section in;

[0033] Figure 6 A top view of a central flow guide stabilizing pipe of a device for improving the ecological environment at the base of a farmland drainage ditch according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic structural diagram of a geomat used in a device for improving the ecological environment at the base of a farmland drainage ditch according to an embodiment of the present invention;

[0035] In the figure: 1-drainage ditch main body; 2-farmland drainage pipe; 3-renovation main body; 301-outer frame; 302-perforated flow-blocking and permeable board; 3021-first permeable hole; 303-central diversion and stabilizing pipe; 3031-second permeable hole; 304-filling area; 3041-geotextile mat; 305-plant area. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0037] The purpose of the present invention is to provide a device for transforming the ecological environment of the base of farmland drainage ditches to solve the problems existing in the above-mentioned prior art, to transform the ecological environment of the existing drainage ditch body, and to effectively remove impurities and pollutants such as nitrogen and phosphorus in the water.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1-Figure 7 As shown, this embodiment provides an ecological environment transformation device for the base of farmland drainage ditches, including several transformation bodies 3, which are used to be installed on the bottom of the drainage ditch main body 1. The specific number of the transformation bodies 3 can be adjusted according to the volume of the transformation bodies 3 themselves and the length of the transformation section of the drainage ditch main body 1, and the two adjacent transformation bodies 3 can be offset or spaced apart.

[0040] The modified body 3 is internally provided with at least one filler area 304 and at least one plant area 305. Filler area 304 is filled with filler, which effectively filters impurities from the water. Plant area 305 is planted with aquatic plants, which are intended to degrade pollutants such as nitrogen and phosphorus in the water.

[0041] The number and location of the filling area 304 and the plant area 305 can be various, but they must meet the requirement that the water in the drainage ditch body 1 will pass through at least one filling area 304 and one plant area 305 when passing through the modified body 3 .

[0042] In actual use, the modification body 3 only needs to be installed at the desired location. When water in the drainage ditch body 1 flows from upstream to downstream, it flows through the modification body 3 and passes through the filler area 304 and the plant area 305. In the filler area 304, the filler filters and absorbs impurities in the water, while in the plant area 305, pollutants such as nitrogen and phosphorus are degraded, thereby regulating the ecological environment in the drainage ditch body 1.

[0043] In this embodiment, the modified body 3 includes an outer frame 301 with openings at its upper and lower ends. Within the outer frame 301 are several perforated flow-blocking and water-permeable panels 302, each of which is provided with a plurality of first water-permeable holes 3021. Water between the cavities on either side of the perforated flow-blocking and water-permeable panels 302 can flow through the first water-permeable holes 3021. Furthermore, the perforated flow-blocking and water-permeable panels 302 separate the interior of the outer frame 301 into at least one filler area 304 and at least one plant area 305. This ensures that each time the water in the drain ditch body 1 passes through a modified body 3, it is purified by at least one filler area 304 and one plant area 305.

[0044] In this embodiment, the specific structure of the transformation body 3 is as follows: Figure 2-Figure 3 As shown, the outer frame 301 is a rectangular frame. A central flow-guiding and stabilizing tube 303 is fixed to the center of the outer frame 301. Four perforated flow-blocking and water-permeable panels 302 are provided. The first ends of the four perforated flow-blocking and water-permeable panels 302 are fixed to the outer wall of the central flow-guiding and stabilizing tube 303, and the second ends of the four perforated flow-blocking and water-permeable panels 302 are respectively fixed to the four inner corners of the outer frame 301. The outer frame 301, perforated flow-blocking and water-permeable panels 302, and central flow-guiding and stabilizing tube 303 can be integrally formed, or they can be manufactured separately and then fixed together by welding or bolts.

[0045] The four perforated flow-blocking and water-permeable panels 302 separate the interior of the outer frame 301 into two filling areas 304 and two plant areas 305. Of course, those skilled in the art can also adjust the number and installation positions of the perforated flow-blocking and water-permeable panels 302 according to actual needs, thereby adjusting the number and distribution positions of the filling areas 304 and plant areas 305 to meet the usage requirements of different drainage ditch bodies 1.

[0046] In this embodiment, if Figure 3 As shown, the two filling areas 304 are positioned opposite each other, and the arrangement direction of the two filling areas 304 is the same as the water flow direction, that is, the line connecting the two filling areas 304 is parallel to the length direction of the drainage ditch body 1. The two plant areas 305 are positioned opposite each other, and the arrangement direction of the two plant areas 305 is perpendicular to the water flow direction, that is, the line connecting the two plant areas 305 is perpendicular to the length direction of the drainage ditch body 1.

[0047] When water flows from upstream to downstream, it first flows through the filler area 304 near the upstream, then passes through the plant areas 305 on both sides, and finally flows into the filler area 304 near the downstream and flows out. The advantage of this arrangement is that water entering the modified body 3 will definitely flow through the filler area 304 and the plant area 305.

[0048] In this embodiment, from Figure 4-Figure 6 It can be seen that multiple second water permeable holes 3031 are provided on both sides of the central diversion and stabilization tube 303 adjacent to the plant area 305, and the interior of the central diversion and stabilization tube 303 is connected to the plant areas 305 on both sides through the second water permeable holes 3031.

[0049] The purpose of providing the second permeable holes 3031 is that when water flows from upstream to downstream, it first flows through the packing area 304 near the upstream, and then passes through the plant areas 305 on both sides. The water flowing through the plant areas 305 is then divided into two parts. One part flows directly into the packing area 304 near the downstream and flows out from the packing area 304 near the downstream. The other part flows through the second permeable holes 3031 into the interior of the central diversion and stabilization tube 303. This creates a variety of complex flow patterns, including diversion and splitting, which can enhance the purification effect even when the water is in a turbulent state.

[0050] In this embodiment, the outer frame 301 has a side length of 0.5m-1.0m and a height of 0.3m-0.5m. The outer frame 301 can be made of a plastic material, such as four PVC sheets welded together or integrally injection-molded. Alternatively, the outer frame 301 can be made of other alloys, such as carbon steel. The outer frame 301 has a wall thickness of 5mm-6mm and primarily supports the stability of the overall device. It also connects to the soil at the bottom of the drainage ditch body 1, providing protection and preventing collapse.

[0051] Four perforated flow-blocking and water-permeable plates 302 divide the internal space of the outer frame 301 into two filling areas 304 and two plant areas 305. The two side edges are respectively connected to the four corners of the outer frame 301 and the central diversion and stabilizing tube 303. On the one hand, they play the role of flow blocking and diversion. On the other hand, they play the role of functional zoning for the arrangement of plants and fillers. Their height is level with the outer frame 301, so the height of the perforated flow-blocking and water-permeable plates 302 is 0.3m-0.5m, and the wall thickness of the perforated flow-blocking and water-permeable plates 302 is 5mm-6mm. The material of the perforated flow-blocking and water-permeable plates 302 is the same as that of the outer frame 301, so they are not repeated here. It should be noted that the first perforated area is arranged upward from 0.1m above the bottom of the perforated flow-blocking and water-permeable plate 302. The first perforated area includes several layers of first hole groups distributed up and down. Each layer of the first hole group includes a plurality of first water-permeable holes 3021 distributed at intervals, which play a role in water permeation at the bottom. The height of the first perforated area accounts for approximately 2 / 5 of the height of the perforated flow-blocking and water-permeable plate 302. If the height of the perforated flow-blocking and water-permeable plate 302 is 0.5m, the height of the first perforated area is 0.2m, the aperture of the first water-permeable hole 3021 is 5mm, and the hole spacing of the first water-permeable hole 3021 depends on the material, and is based on the fact that the perforated flow-blocking and water-permeable plate 302 is not easily broken.

[0052] The central diversion stabilizing tube 303 forms a secondary local water diversion, and the internal circular space forms another base habitat. Its bottom end is flush with the bottom of the outer frame 301. Its top surface can be in two situations: first, the top surface of the central diversion stabilizing tube 303 is flush with the top surface of the outer frame 301, which makes it convenient for workers to stand on its top surface to carry items; or second, the top surface of the central diversion stabilizing tube 303 is higher than the top surface of the outer frame 301, and the distance between the top surface of the central diversion stabilizing tube 303 and the top surface of the outer frame 301 does not exceed 0.1m. In this embodiment, the top surface of the central diversion stabilizing tube 303 is 0.1m higher than the top surface of the outer frame 301. The central diversion stabilizing tube 303 can be made of existing UPVC pipe, or it can be made of the same material as the perforated flow-blocking and permeable plate 302 and formed integrally. The inner diameter of the central flow-guiding and stabilizing tube 303 is 1 / 4-1 / 3 of the length of one side of the outer frame 301. For example, if one side of the outer frame is 1.0m long, the central flow-guiding and stabilizing tube 303 can be made of a 300mm inner diameter tube. A second perforated area is arranged upward, starting 0.1m above the bottom of the central flow-guiding and stabilizing tube 303. The height of the second perforated area accounts for 1 / 3 of the total height of the central flow-guiding and stabilizing tube 303 (for example, if the total height of the central flow-guiding and stabilizing tube 303 is 0.6m, the height of the second perforated area is 0.2m). The second perforated area includes several groups of second hole groups distributed vertically, each of which includes multiple second water-permeable holes 3031 evenly distributed around the circumference. The aperture of the second water-permeable holes 3031 is 5mm, and the spacing between the holes is determined by the material, so that the central flow-guiding and stabilizing tube 303 is not easily broken.

[0053] In this embodiment, the filler in filler area 304 includes one or more of gravel, zeolite, volcanic rock, and glass pumice. The filler particle size ranges from 2 cm to 4 cm. When any two of these fillers are combined, the volume ratio is preferably 1:1. The filler pavement height is approximately half the height of filler area 304. For example, if the height of outer frame 301 is 0.5 m, the filler pavement height is 0.25 m.

[0054] The aquatic plants in the plant area 305 are emergent plants, specifically including but not limited to the common evergreen iris.

[0055] In this embodiment, the upper surface of the filling area 304 can be used to plant aquatic plants. Emergent plants, mainly evergreen irises, can be planted through soilless cultivation. 3-5 plants are planted in each filling area 304. If the water flow is fast in the drainage ditch, no plants are planted on the filling.

[0056] Alternatively, when the filler area 304 is not planted with emergent plants, in order to facilitate the cleaning of garbage such as fallen leaves and straw, the upper surface of the filler can be covered with a geomat 3041, the thickness of the geomat 3041 being 3-5 cm. Figure 7 As shown, the geomat 3041 is cut into the plane shape of the filling area 304 (similar to a fan shape), so as to facilitate placement and installation.

[0057] A backfill layer is provided in the plant area 305. When the plant area 305 is installed in the installation groove at the bottom of the drainage ditch main body 1, since the device is installed lower than the normal ditch bottom, part of the soil can be backfilled according to the depth requirements. The height of the backfill layer does not exceed 0.2m. The emergent plants planted are mainly evergreen irises, etc., and 3-5 plants are planted in each plant area 305.

[0058] In this embodiment, the drainage ditch main body 1 is an ecological ditch or a hard drainage ditch, wherein the bottom and two oblique slope protections of the ecological ditch are planted with plants, while the bottom and two oblique slope protections of the hard drainage ditch are both concrete structures. Whether it is an ecological ditch or a hard drainage ditch, the cross-section of both can be a common inverted isosceles trapezoid. However, if the cross-sectional size of the drainage ditch main body 1 is relatively small, such as a top width of about 1.0m and a ditch bottom width of 0.3-0.4m, due to the small ditch bottom width, the cross-section of the original drainage ditch main body 1 needs to be modified before installation, that is, the original channel wall and channel bottom of the modified section are demolished, the bottom is excavated in combination with the preset depth of the device, and the original trapezoidal cross-section is transformed into a vertical channel wall, paying attention to the connection with the original channel. If the device is applied to the bottom of an ecological ditch, the bottom of the modified section needs to be excavated. After installation, the slope protection of the modified section is protected (that is, grass grids are laid and plants are planted) to prevent collapse.

[0059] In this embodiment, the bottom of the drainage ditch body 1 is provided with an installation groove, and the modified body 3 is installed in the installation groove, thereby forming a sunken layout. The advantages of this arrangement are: on the one hand, the sunken layout can improve the water storage capacity of the drainage ditch body 1, and the change of micro-water flow conditions, the configuration of fillers and plants can also improve the purification capacity of farmland non-point source pollutants; on the other hand, after the bottom of the drainage ditch body 1 is modified in stages (the drainage ditch body 1 is generally equipped with multiple modified bodies 3 with a length of 3.0m-5.0m at intervals of 20m-30m), the multi-habitat system formed can improve the ecological service function of the drainage ditch body 1 and provide space for small animals such as frogs to live and reproduce.

[0060] The drainage ditch main body 1 is connected to the farmland drainage pipe 2. Generally, the farmland drainage pipe 2 is set on the upstream side of the modified main body 3 closest to the upstream, which is used to divert the water discharged from the farmland into the drainage ditch main body 1 and pass through each modified main body 3 in turn for purification.

[0061] The device for improving the ecological environment of the base of a farmland drainage ditch provided in this embodiment can increase the water storage capacity of the drainage ditch body 1 during farmland drainage. When the water flows into the improvement body 3, it first passes through the water-facing filling area 304. After filtration and sedimentation, it initially intercepts and purifies non-point source pollutants. Then, it passes through the perforated flow-blocking and permeable plate 302 for secondary water distribution. Part of the drainage water passes directly into the downstream filling area 304 through the plant area 305, while another part enters the central diversion stabilization pipe 303 from the plant area 305. It is then dispersed to the plant areas 305 on both sides, forming a variety of complex water flow patterns of diversion and diversion, which plays a secondary purification role. Finally, it enters the downstream filling area 304 through the perforated flow-blocking and permeable plate 302 to purify the non-point source pollutants again. Farmland drainage is affected by rainfall intensity and duration, resulting in varying water volumes and flow patterns. However, considering the overall structure, the presence of the device structure, cavity, filler, and plants can create localized flow patterns such as upstream and downstream, return flow, and multi-layer flow, providing purification functions such as storage, sedimentation, filtration, degradation, and absorption. When used in hard drainage channels, this device can compensate for the lack of pollutant purification capabilities of existing drainage channels. When used in ecological ditches, it can enhance the ecological purification capacity of these ditches. Furthermore, the phased application of the device generally ensures that a portion of the drainage ditch itself retains water when farmland is not being drained, providing habitats and breeding grounds for small animals such as frogs, thereby enhancing the ditch's biodiversity and other ecological service functions.

[0062] The device for improving the ecological environment of the base of farmland drainage ditches provided by the present invention improves the retention and purification capacity of the drainage ditch main body 1 without affecting the normal drainage of the drainage ditch main body 1. It can be used as a component of farmland non-point source pollution control, effectively reduce the concentration of farmland drainage pollutants, and improve the ecological environment function of ecological ditches or hard ditches. At the same time, the materials used do not have any ecological risks, and the design is simple, the installation is convenient, the cost is low, and the operation and maintenance costs are low.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] In the description of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; they may refer to mechanical or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0065] If the present invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integrated molding using a casting process) (except where it is obviously impossible to use an integrated molding process).

[0066] In addition, unless otherwise stated, the terms used in any technical solution disclosed in the present invention to express positional relationships or shapes include states or shapes that are approximate, similar, or close thereto.

[0067] Any component provided by the present invention may be assembled from multiple separate components, or may be a separate component manufactured by an integral molding process.

[0068] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0069] It should also be noted that in the embodiments of the present application, the same figure mark represents the same component or the same part.

[0070] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0071] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A device for improving the ecological environment of the base of a farmland drainage ditch, characterized by: It comprises a plurality of modification bodies (3), wherein the modification bodies (3) are used to be installed on the bottom of the drainage ditch body (1); At least one filler area (304) and at least one plant area (305) are provided inside the modified body (3); the filler area (304) is filled with fillers, and the plant area (305) is planted with aquatic plants; When the water in the drainage ditch main body (1) passes through the modified main body (3), it will pass through at least one of the filler areas (304) and one of the plant areas (305).

2. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 1 is characterized by: The modified body (3) comprises an outer frame (301), wherein a plurality of perforated flow-blocking and water-permeable plates (302) are provided in the outer frame (301), wherein a plurality of first water-permeable holes (3021) are provided on the perforated flow-blocking and water-permeable plates (302), and wherein the perforated flow-blocking and water-permeable plates (302) separate the interior of the outer frame (301) into at least one filler area (304) and at least one plant area (305).

3. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 2 is characterized by: The outer frame (301) is a rectangular frame, a central flow guiding and stabilizing tube (303) is fixed at the center of the outer frame (301), four perforated flow blocking and water permeable plates (302) are provided, the first ends of the four perforated flow blocking and water permeable plates (302) are fixed to the outer wall of the central flow guiding and stabilizing tube (303), and the second ends of the four perforated flow blocking and water permeable plates (302) are respectively fixed to the four inner corners of the outer frame (301); The four perforated flow-blocking and water-permeable plates (302) separate the interior of the peripheral frame (301) into two filling areas (304) and two plant areas (305).

4. The device for improving the ecological environment of the farmland drainage ditch base according to claim 3 is characterized by: The two filler areas (304) are arranged relative to each other, and the two plant areas (305) are arranged relative to each other.

5. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 3 is characterized by: A plurality of second water-permeable holes (3031) are provided on both sides of the central flow-guiding stabilizing tube (303), and the interior of the central flow-guiding stabilizing tube (303) is connected to the plant areas (305) on both sides through the second water-permeable holes (3031).

6. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 3 is characterized by: The length of one side of the peripheral frame (301) is 0.5m-1.0m, the height of the peripheral frame (301) is 0.3m-0.5m, and the wall thickness of the peripheral frame (301) is 5mm-6mm; The height of the perforated flow-blocking and water-permeable plate (302) is 0.3m-0.5m, and the wall thickness of the perforated flow-blocking and water-permeable plate (302) is 5mm-6mm; The top surface of the central flow guiding and stabilizing tube (303) is flush with the top surface of the peripheral frame (301); or the top surface of the central flow guiding and stabilizing tube (303) is higher than the top surface of the peripheral frame (301), and the distance between the top surface of the central flow guiding and stabilizing tube (303) and the top surface of the peripheral frame (301) does not exceed 0.1 m; The inner diameter of the central flow-guiding stabilizing tube (303) is 1 / 4-1 / 3 of the length of one side of the outer frame (301).

7. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 1 is characterized by: The filler in the filler area (304) includes one or more of gravel, zeolite, volcanic rock and glass pumice; The aquatic plants in the plant area (305) include irises.

8. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 1 is characterized by: The upper surface of the filling area (304) is used for planting aquatic plants; or a geomat (3041) is installed on the upper surface of the filling area (304); A backfill soil layer is provided in the plant area (305).

9. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 1, characterized in that: The drainage ditch body (1) is an ecological ditch or a hard drainage ditch.

10. The device for improving the ecological environment of the base of a farmland drainage ditch according to claim 1, characterized in that: The bottom of the drainage ditch body (1) is provided with a mounting groove, and the modified body (3) is mounted in the mounting groove; The drainage ditch main body (1) is connected to a farmland drainage pipe (2).

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