CN114145259B

CN114145259B - Fish and vegetable symbiotic water surface farmland system based on V-shaped fish tank and floating body farmland

Info

Publication number: CN114145259B
Application number: CN202111556050.4A
Authority: CN
Inventors: 朱积军; 贺天强; 王双平
Original assignee: Fengcheng Longlong Agricultural Development Co ltd
Current assignee: Fengcheng Longlong Agricultural Development Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2023-05-16
Anticipated expiration: 2041-12-18
Also published as: CN114145259A

Abstract

The invention discloses a fish and vegetable symbiotic water surface farmland system based on a V-shaped fish tank and a floating body farmland, which comprises a V-shaped fish tank, a fish food throwing system, a bottom mud collecting and irrigating system such as fish manure and the like, a floating body farmland, a vegetable greenhouse and a water surface farmland fixing system, wherein a plurality of floating body farmlands are arranged on the water surface in parallel and are fixed through the water surface farmland fixing system, the water surface V-shaped fish tank is arranged between two floating body farmlands, the top of the water surface V-shaped fish tank is a water surface and is provided with a channel, the bottom mud collecting and irrigating system such as the fish food throwing system and the fish manure and the like is arranged on the channel, and the vegetable greenhouse is arranged on the floating body farmland. The invention can carry out industrial planting on crops on the water surface, and the fish is bred in the water surface, and the bottom mud is easily collected through the V-shaped fish groove and irrigated to the crops, so that the fish and vegetable symbiosis is realized, and the purposes of reducing the cost and improving the economic benefit are achieved.

Description

Fish and vegetable symbiotic water surface farmland system based on V-shaped fish tank and floating body farmland

Technical Field

The invention belongs to the field of agriculture and fishery cultivation, and particularly relates to a fish and vegetable symbiotic water surface farmland system based on a V-shaped fish tank and a floating body farmland.

Background

At present, fish and vegetable symbiosis is a widely popular ecological breeding system, mainly fish excreta are used for vegetable planting and absorption, so that the living environment of fish and the vegetable growth environment are synchronously improved, but basically stay on planting levels and modes of small environments such as a balcony or a greenhouse.

The flume fish farming method is a novel fish farming method which is rising in recent years, and has the advantages of high-density cultivation, short growth period, easy fishing, quick income and the like. However, the traditional method for culturing fish in the water trough needs to supplement fresh water in a large amount at high frequency, has huge water consumption, and has higher cost when being applied to the area of water shortage in the north. The water tank type adopted in the market is rectangular, excrement produced by high-density fish shoal and the residual feed deposited on the bottom of the water tank form sludge, the health of the fish shoal in the water tank is unfavorable, the bottom sludge is scattered and scattered due to the structural form of the rectangular fish tank, the collection is difficult, and particularly, the collection of the bottom sludge is difficult to realize under the condition of not severely disturbing the fish shoal. In addition, the bottom mud of the fish tank can be used as an excellent natural fertilizer for irrigating vegetables, and the method adopted at present is to collect, store and transport the bottom mud to a vegetable base for use by a certain means. Meanwhile, the shoal of fish cultured in the running water tank is relatively difficult to catch, and the conventional fishing method for the running water tank fish culture generally uses a fishing net for fishing manually, and the method is time-consuming and labor-consuming. In addition, the nutrition value and the taste of the wild fish are superior to those of artificially cultured domestic fish, people transfer the grown domestic fish to a natural pond for 'bathing', and catch the grown domestic fish after a period of stocking for market, so that the method can create better economic benefit, but the artificial transportation of the fish swarm easily causes death of the fish due to oxygen deficiency and extrusion, and the transportation cost is higher.

The water surface farmland is a farming mode which is continuously improved from five generations to modern time, basically is used for planting aquatic vegetables, and cannot be planted in a large scale and industrialization mode.

Disclosure of Invention

The invention aims to provide a fish and vegetable symbiotic water surface farmland system based on V-shaped fish grooves and floating body farmlands, which combines and improves fish and vegetable symbiosis and water surface farmlands, thereby realizing industrialization of fish and vegetable symbiosis of the water surface farmlands and large-scale cultivation, and being particularly suitable for synchronously completing various functions of fish culture, bottom mud collection and utilization, vegetable planting, fishing, wild household fish and the like on large water surfaces such as reservoirs or lakes.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a fish and vegetable symbiotic water surface farmland system based on a V-shaped fish tank and a floating body farmland comprises a V-shaped fish tank, a fish food throwing system, a fish manure and other bottom mud collecting and irrigating system, a floating body farmland, a vegetable greenhouse and a water surface farmland fixing system, wherein a plurality of floating body farmlands are arranged on the water surface in parallel and fixed through the water surface farmland fixing system, the V-shaped fish tank is arranged between two floating body farmlands, the top of the V-shaped fish tank is a water surface and is provided with a channel, the fish food throwing system, the fish manure and other bottom mud collecting and irrigating system are arranged on the channel, and the vegetable greenhouse is arranged on the floating body farmland.

Further, the floating body farmland comprises a floating carrier, geotechnical cloth and a fixed frame, the floating carrier is immersed in the water surface, the floating carrier is assembled by a plurality of polystyrene foam materials and is formed by connection of the geotechnical cloth, the top of the floating carrier is a planting area, the fixed frame is installed around the floating carrier, the fixed frame extends upwards to be provided with a soil retaining plate, and planting soil is covered in the planting area.

Further, the V-shaped fish groove comprises an anti-seepage film, shaping element steel and a fastening piece, the anti-seepage film is sewn into an integral V-shaped fish groove, the edge is thickened, two ends are sealed, a buckle is arranged at each half meter of two sides of the upper edge of the V-shaped fish groove to serve as the fastening piece, and the shaping element steel is located at the bottom of the V-shaped fish groove.

Further, the device also comprises an oxygen supply system, wherein the oxygen supply system comprises a main air supply pipeline, an air outlet pipe and an air compressor, the air compressor is arranged at two ends of the V-shaped fish groove, the main air supply pipeline is annularly distributed around the V-shaped fish groove and connected with the air compressor, the air outlet pipe is uniformly arranged at the middle lower part of the V-shaped fish groove and connected with the main air supply pipeline, and atmosphere bottles are further arranged at two ends of the V-shaped fish groove.

Further, the fish food throwing system comprises a small pump spraying boat, a fish food throwing device and a first magnet, wherein the fish food throwing device is arranged on the small pump spraying boat, and the first magnet is adsorbed on the shaping element steel at the lower part of the V-shaped fish tank and is connected to the bottom of the small pump spraying boat through a rope.

Further, sediment collection and irrigation system such as fish excrement includes that the pump spouts ship, the sewage suction pump, the discharge pump, irrigation pipe and pumping pipe, be provided with the sewage collecting box on the pump spouts ship, sewage collecting box bottom adopts the toper design, sewage suction pump and discharge pump are all installed on the pump spouts ship, sewage collecting box top is provided with the feed inlet, and communicate to V type fish tank bottom through the pumping pipe, the pumping pipe is connected to the sewage suction pump, sewage collecting box bottom is provided with the bin outlet, and connect the irrigation pipe, the branching of irrigation pipe export is towards the body farmland setting of V type fish tank both sides.

Further, the water surface farmland fixing system comprises a wharf and a ground anchor, wherein two ends of the floating body farmland are fixed by adopting steel frames, floating bodies are arranged on the steel frames to form the wharf, and the wharf is fixed by the ground anchor. The ground anchor is not less than 3 ropes, so that the ropes are prevented from being broken, damage is generated, and safety redundancy is realized; the middle and two sides of the floating body farmland are at least provided with 3 through long steel bars to connect all floating bodies under geotechnical cloth into a whole, thereby preventing the steel bars from breaking, generating damage and having safety redundancy.

Further, still including driving the fish system, it includes and drives the fish net to drive the fish system, wire rope, from driving wheel, action wheel and driving motor, be provided with the guide rail on the body farmland of V type fish tank both sides, it sets up the shaping to drive the fish net cooperation V type fish tank, the edge is fixed through the support, it erects on the guide rail through the gyro wheel to drive fish net top both ends, set up respectively at V type fish tank both ends from driving wheel and action wheel, wire rope overlaps and establishes from driving wheel and action wheel, the action wheel is connected with driving motor transmission, it connects wire rope to drive fish net top, it is provided with the second magnet to drive fish net bottom, the second magnet is pressed close to with the design element steel.

Further, one end of each of two sealing ends of the V-shaped fish groove is directly sealed by adopting an adhesive and matched with a V-shaped impermeable membrane, the other end of each of the two sealing ends of the V-shaped fish groove is sealed by adopting a V-shaped gate and matched with the adhesive, and two ends of the top of the V-shaped gate are fixed on a floating body farmland.

Furthermore, the V-shaped fish tank and the floating body farmland are designed and installed according to the design and the size of the materials commonly used in the current market by adopting a unified building module, so that the building materials are saved to the greatest extent, the running cost is reduced, and the space environment is beautified. The V-shaped fish tank is shaped into a wide x depth=4000 mm×3000 mm, an oxygen supply system is arranged above 2500 mm depth, the V-shaped fish tank is a fish culture area, and the lower triangular area is a fish manure collecting area; the width of the floating body farmland is 6000 mm, the thickness of the floating body in the vegetable greenhouse planting area is 400 mm, the thickness of the corresponding soil covering layer is not more than 222 mm, the thickness of the floating body in the open planting area is 200 mm, and the thickness of the corresponding soil covering layer is not more than 111 mm; the farmland on the water surface generally adopts 50m, 100m, 150m, 200m, 250m, 300m, 350m, 400m, 450m and 500m; each group of water surface farmland consists of vegetable greenhouse floating body farmland, V-shaped fish grooves and open-air planting floating body farmland, and the distance between the two groups of water surface farmland is 4000 mm.

Compared with the prior art, the invention has the following beneficial effects: 1) The EPS foam plastic is spliced into strips and blocks on the large water surface of a reservoir or a lake, geotextiles are paved to be connected and formed, soil is sucked from the bottom of the reservoir to cover the geotextiles as planting soil, and a water surface farmland is formed, so that water planting is realized; 2) The V-shaped fish grooves with impermeable membrane materials hung in the middle of two farmlands are easy to collect bottom mud and irrigate vegetables and pasture, purified water after absorption of plants and filtration of soil returns to a reservoir, the reservoir automatically supplements the V-shaped fish grooves with purified water to form water circulation, and the water utilization efficiency is 100%. 3) The water surface V-shaped fish groove is easier to form and lower in cost than the ground V-shaped fish groove. 4) Geotechnical cloth levels the water surface of a water reservoir, and EPS completely enters the water body to slow down aging; 4) The anti-seepage film V-shaped fish groove isolates the inner water body and the outer water body, the fishes are kept in the water body, the natural water body is prevented from being polluted by fishery cultivation, and the pollution of the conventional fish cultivation to the ecological environment is effectively reduced. 5) The fish-vegetable symbiotic water surface farmland system is built according to the building model system, is beneficial to realizing industrialization of seed culture, and has great significance for fish culture and vegetable planting on large water surfaces such as reservoirs or lakes. The fish catching system provided by the invention can improve the fishing efficiency and provides a simple, economical and efficient novel method for the wild of the housefish.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a partial cross-sectional view of A-A of FIG. 1;

FIG. 4 is a schematic diagram of the fish driving system according to the present invention;

FIG. 5 is a schematic view of the structure of the V-shaped gate of the present invention;

FIG. 6 is a schematic diagram of the oxygen supply system of the present invention;

FIG. 7 is a top view of the fish driving system of the present invention;

FIG. 8 is a block diagram of a bottom mud collection and irrigation system of the invention such as fish manure;

FIG. 9 is a block diagram of the fish food delivery system of the present invention;

FIG. 10 is an enlarged schematic view of portion A of FIG. 3;

FIG. 11 is an enlarged schematic view of portion B of FIG. 4;

FIG. 12 is an enlarged schematic view of portion C of FIG. 4;

in the figure: 1.V fish tank, 11 anti-seepage film, 12 setting element steel, 13 fastener, 14 channel, 2 oxygen supply system, 21 main pipe, 22 air outlet pipe, 23 air compressor, 3 fish feeding system, 31 small pump sprayer, 32 fish feeding device, 33 first magnet, 4 bottom mud collecting and irrigation system, 41 pump sprayer, 42 dirt suction pump, 43 discharge pump, 44 irrigation pipe, 45 suction pipe, 46 sewage collecting tank, 5 float farm, 51 float carrier, 52 float fabric, 53 fixing frame, 54 vegetable greenhouse, 6 water surface fixing system, 61 dock, 62 ground anchor, 63 rope, 7 fish driving system, 71 fish driving net, 72 steel wire rope, 73 driven wheel, 74 driving wheel, 75 driving motor, 76 guide rail, 77 second magnet, 78 roller, 8.V type, 81 gate frame, 82 lifting motor, 83 small earth moving plate.

Detailed Description

Referring to fig. 1-2, a fish and vegetable symbiotic water surface farmland system based on a V-shaped fish tank and a floating body farmland comprises a V-shaped fish tank 1, an oxygen supply system 2, a fish food throwing system 3, a bottom mud collecting and irrigating system 4 such as fish manure, a floating body farmland 5, a vegetable greenhouse 54 and a water surface farmland fixing system 6, wherein a plurality of floating body farmland 5 are arranged on the water surface in parallel and are fixed through the water surface farmland fixing system 6, the water surface V-shaped fish tank 1 is arranged between the two floating body farmland 5, the top of the water surface V-shaped fish tank 1 is the water surface and is provided with a channel 14, the bottom mud collecting and irrigating system 4 such as the fish food throwing system 3 and the fish manure are arranged on the channel 14, and the vegetable greenhouse 54 is arranged on the floating body farmland 5. The invention is suitable for reservoirs, lakes, ponds and other places, can increase a large amount of agricultural land, is easy to collect bottom mud through the V-shaped fish grooves 1 and irrigate vegetables and pasture, protects the environment, and has zero discharge, the irrigated water is returned to the reservoirs after being absorbed by plants and filtered by soil, the reservoirs automatically supplement the V-shaped fish grooves 1 with the purified water, the water body circulation is formed, and the water utilization efficiency is 100%. In the practical application process, two small holes can be formed in two ends of the upper part of the V-shaped fish tank 1, and under the general condition, the water level of the V-shaped fish tank 1 is slightly lower than the water level of a reservoir due to sediment extraction, and the function of automatic water supplementing is realized through the small holes.

Referring to fig. 3, the floating body farmland 5 includes a floating carrier 51, geotextile 52 and a fixed frame 53, the floating carrier 51 is immersed in the water surface, the floating carrier 51 is assembled by a plurality of polystyrene foam materials and is formed by connection of the geotextile 52, the top of the floating carrier 51 is a planting area, the fixed frame 53 is installed around the floating carrier 51, the fixed frame 53 extends upwards to be provided with a soil retaining plate, and planting soil is covered in the planting area. The polystyrene foam is used as the floating carrier 51, and has a plurality of micropores, a certain water locking function, but the polystyrene foam cannot completely lead to water to be discharged into a reservoir, and after the bottom mud is used for irrigating vegetables and pasture, the irrigated water is purified water to return to the reservoir after being absorbed by plants and filtered by soil, so that water circulation is formed.

Referring to fig. 3, the V-shaped fish groove 1 comprises an impermeable film 11, a shaping element steel 12 and a fastening piece 13, the impermeable film 11 is sewn into the whole V-shaped fish groove 1, the edge is thickened, two ends are sealed, one fastener is arranged at each half meter on two sides of the upper edge of the V-shaped fish groove 1 to serve as the fastening piece 13, and the shaping element steel 12 is located at the bottom of the V-shaped fish groove 1. The water for fish culture and the water in the reservoir are separated to prevent the water from being polluted, and the water falls down by the gravity of the shaping element steel 12, so that the fish tank is in a V-shaped state, and the fish manure is easy to concentrate and deposit.

Referring to fig. 6, the oxygen supply system 2 is further included, the oxygen supply system 2 includes a main air supply pipe 21, an air outlet pipe 22 and an air compressor 23, the air compressor 23 is arranged at two ends of the V-shaped fish tank 1, the main air supply pipe 21 is annularly arranged around the V-shaped fish tank 1 and is connected with the air compressor 23, the air outlet pipe 22 is uniformly arranged at the middle lower part of the V-shaped fish tank 1 and is connected with the main air supply pipe 21, and atmosphere bottles are further arranged at two ends of the V-shaped fish tank 1. Prevent the insufficient dissolved oxygen in water, and simultaneously concentrate the fish at the middle upper part of the fish tank, ensure the deposition of fish manure and the like at the bottom of the fish tank.

Referring to fig. 9, the fish feeding system 3 includes a small pump spray boat 31, a fish feeder 32, and a first magnet 33, wherein the fish feeder 32 is installed on the small pump spray boat 31, and the first magnet 33 is adsorbed on the shaped steel 12 at the lower part of the V-shaped fish tank 1 and is connected to the bottom of the small pump spray boat 31 by a rope 64. So that the boat can linearly advance or retreat at uniform speed and automatically throw fish feed during running.

Referring to fig. 8, the bottom mud collecting and irrigating system 4 includes a pump spraying ship 41, a sewage sucking pump 42, a discharging pump 43, an irrigating pipe 44 and a pumping pipe 45, wherein a sewage collecting tank 46 is arranged on the pump spraying ship 41, the bottom of the sewage collecting tank 46 is in a conical design, the sewage sucking pump 42 and the discharging pump 43 are both arranged on the pump spraying ship 41, the top of the sewage collecting tank 46 is provided with a feeding hole and is communicated to the bottom of the V-shaped fish tank 1 through the pumping pipe 45, the sewage sucking pump 42 is connected with the pumping pipe 45, the bottom of the sewage collecting tank 46 is provided with a discharging hole and is connected with the irrigating pipe 44, and the outlet of the irrigating pipe 44 is branched and arranged towards floating body farmlands 5 on two sides of the V-shaped fish tank 1. The sewage and floccule at the bottom of the V-shaped fish tank 1 are sucked by the sewage sucking pump 42, the pump spraying boat 41 moves from one end of the V-shaped fish tank 1 to the other end, sucks sewage during the period, and sails back after reaching the other end, and in the sailing back process, the sewage is sprayed to a water surface farmland through the sewage collecting box 46, and the sewage can be used as a base fertilizer of plants after being collected by the bottom mud formed after the floccule is filtered.

Referring to fig. 1-2, the water surface farmland fixing system 6 comprises a wharf 61 and a ground anchor 62, wherein two ends of a floating body farmland 5 are fixed by adopting steel frames, floating bodies are arranged on the steel frames to form the wharf 61, and the wharf 61 is fixed by the ground anchor 62. The ground anchor 62 is provided with at least 3 ropes 63, so that the ropes 64 are prevented from being broken, damage is generated, and safety redundancy is realized; the floating bodies under all geotechnical cloths 52 are combined into a whole by at least 3 through long reinforcing bars at the middle and two sides of the floating body farmland 5, so that the reinforcing bars are prevented from being broken, the damage is generated, and the safety redundancy is realized.

Referring to fig. 4 and 7, wherein the fish-driving system 7 is further included, the fish-driving system 7 comprises a fish-driving net 71, a steel wire rope 72, a driven wheel 73, a driving wheel 74 and a driving motor 75, a guide rail 76 is arranged on the floating body farmland 5 at two sides of the V-shaped fish tank 1, the fish-driving net 71 is formed by matching with the V-shaped fish tank 1, the edges of the fish-driving net are fixed through a bracket, two ends of the top of the fish-driving net 71 are erected on the guide rail 76 through rollers, the driven wheel 73 and the driving wheel 74 are respectively arranged at two ends of the V-shaped fish tank 1, the steel wire rope 72 is sleeved on the driven wheel 73 and the driving wheel 74, the driving wheel 74 is in transmission connection with the driving motor 75, the top of the fish-driving net 71 is connected with the steel wire rope 72, a second magnet 77 is arranged at the bottom of the fish-driving net 71, and the second magnet 77 is close to the shaped element steel 12. The fish driving system 7 can drive the fishes together, thereby facilitating fishing. In practical application, the second magnet 77 should keep a certain distance from the shaping element steel 12, so as to prevent the second magnet and the shaping element steel from being tightly attracted together, and the driving motor 75 is difficult to rotate and pull; however, the distance between the two is not more than 1cm, so that the magnetic force between the fish-catching net 71 and the bottom of the V-shaped fish groove 1 is reduced due to the overlarge distance, and the fish-catching net 71 is prevented from being inclined too much to lose the fish-catching effect. In use, the motor drives the substitution driving wheel 74 to rotate, so that the steel wire rope 72 pulls the fish-driving net 71 to move along the guide rail 76, and when the maximum stroke is reached, the motor rotates reversely, and the fish-driving net 71 flies back. Of course, since the V-shaped fish grooves 1 are multiple in the practical application process, the single driving motor 75 can drive the multiple driving wheels 74 to rotate by coaxially driving the driving wheels 74 on each fish groove, so as to achieve the effect of uniformly driving fish.

Referring to fig. 5, one ends of two sealing ends of the V-shaped fish groove 1 are directly sealed by adopting an adhesive and matched with the V-shaped impermeable membrane 11, the other ends of the two sealing ends are sealed by adopting the V-shaped gate 8 and matched with the adhesive, and two ends of the top of the V-shaped gate 8 are fixed on the floating body farmland 5. The V-shaped gate 8 can facilitate the fish-driving system 7 to directly drive fish out of the V-shaped fish tank 1, thereby facilitating the wild of the domestic fish. The V-shaped gate 8 can be a similar small water conservancy gate, the material is light, the gate frame 81 can be designed into a V shape according to the V-shaped fish tank 1, the shape of the lifting gate 82 is not required, the size and the lifting height of the gate are only required for fish to pass, and therefore the torque requirement is not high, and the lifting can be driven by adopting the small motor 83. Of course, a sealing rubber pad can be further arranged at the joint of the lifting flashboard 82 and the gate frame, so that better sealing performance is ensured.

Referring to fig. 1-2, the V-shaped fish tank 1 and the floating body farmland 5 are designed and installed according to the shaping size of the materials commonly used in the market at present by adopting a unified building module design, so that the building materials are saved to the greatest extent, the running cost is reduced, and the space environment is beautified. The V-shaped fish tank 1 is shaped into a wide-width-depth-4000 mm-3000 mm-2500 mm-depth-above oxygen supply system 2, which is a fish culture area, and a triangular area below the V-shaped fish tank is a fish manure collecting area; the width of the floating body farmland 5 is 6000 mm, the thickness of the floating body in the planting area of the vegetable greenhouse 54 is 400 mm, the thickness of the floating body in the open planting area is 200 mm, and the thickness of the floating body in the planting area is 111 mm; the farmland on the water surface generally adopts 50m, 100m, 150m, 200m, 250m, 300m, 350m, 400m, 450m and 500m; each group of water surface farmlands consists of a vegetable greenhouse 54 floating body farmland 5+V type fish tank 1+ and an open-air planting floating body farmland 5, and the distance between the two groups of water surface farmlands is 4000 mm.

The invention relates to a fish and vegetable symbiotic water surface farmland system based on a V-shaped fish tank and a floating body farmland, which mainly achieves the purposes of being capable of carrying out industrial planting on crops on the water surface, breeding fish in a captive mode, easily collecting bottom mud through the V-shaped fish tank 1 and irrigating the bottom mud to the crops, achieving fish and vegetable symbiosis, reducing cost and improving economic benefit. Because a large amount of industrialization are planted and are bred, can cause the pollution to the environment, therefore, the fertilizer water that the fishery breeds is circulated after the surface of water farmland filters and is returned to reservoir, reservoir automatic replenishment V type fish tank 1, water utilization efficiency is 100%, effectively promotes water utilization rate, water economy resource. The V-shaped fish tank 1 is made of the impermeable membrane 11, so that the inner water body and the outer water body are isolated, fish are kept in the water body, the pollution of the fishery culture to the natural water body is prevented, and the pollution of the conventional fish culture to the ecological environment is effectively reduced.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fish and vegetable symbiotic water surface farmland system based on V-shaped fish tanks and floating body farmlands is characterized in that: the system comprises a V-shaped fish tank, a fish food throwing system, a fish manure and other bottom mud collecting and irrigating system, floating body farmlands, a vegetable greenhouse and a water surface farmland fixing system, wherein a plurality of floating body farmlands are arranged on the water surface in parallel and are fixed through the water surface farmland fixing system, the water surface V-shaped fish tank is arranged between the two floating body farmlands, the top of the water surface V-shaped fish tank is a water surface and is provided with a channel, the fish food throwing system, the fish manure and other bottom mud collecting and irrigating system is arranged on the channel, and the vegetable greenhouse is arranged on the floating body farmlands;

the floating body farmland comprises a floating carrier, geotextiles and a fixed frame, wherein the floating carrier is immersed in the water surface, the floating carrier is assembled by a plurality of polystyrene foam materials and is formed by connection of the geotextiles, the top of the floating carrier is a planting area, the fixed frame is arranged around the floating carrier, the fixed frame is provided with a soil retaining plate in an upward extending mode, and planting soil is covered in the planting area;

the V-shaped fish groove comprises an anti-seepage film, shaping element steel and a fastening piece, wherein the anti-seepage film is sewn into an integral V-shaped fish groove, the edge is thickened, the two ends are sealed, a fastener is arranged at each half meter of the two sides of the upper edge of the V-shaped fish groove and used as the fastening piece, and the shaping element steel is located at the bottom of the V-shaped fish groove;

the device comprises a V-shaped fish tank, an air supply main pipe, an air outlet pipe and an air compressor, wherein the air compressor is arranged at two ends of the V-shaped fish tank, the air supply main pipe is annularly distributed around the V-shaped fish tank and is connected with the air compressor, the air outlet pipe is uniformly arranged at the middle lower part of the V-shaped fish tank and is connected with the air supply main pipe, and atmosphere bottles are also arranged at two ends of the V-shaped fish tank;

the fish food throwing system comprises a small pump spraying boat, a fish food throwing device and a first magnet, wherein the fish food throwing device is arranged on the small pump spraying boat, and the first magnet is adsorbed on the shaping element steel at the lower part of the V-shaped fish tank and is connected to the bottom of the small pump spraying boat through a rope;

the bottom mud collecting and irrigating system comprises a pump spraying boat, a sewage sucking pump, a discharging pump, an irrigating pipe and a pumping pipe, wherein the pump spraying boat is provided with a sewage collecting box, the bottom of the sewage collecting box adopts a conical design, the sewage sucking pump and the discharging pump are both arranged on the pump spraying boat, the top of the sewage collecting box is provided with a feed inlet and communicated to the bottom of the V-shaped fish tank through the pumping pipe, the sewage sucking pump is connected with the pumping pipe, the bottom of the sewage collecting box is provided with a discharge outlet and connected with the irrigating pipe, and the outlet of the irrigating pipe is forked to be arranged towards floating body farmlands on two sides of the V-shaped fish tank;

the water surface farmland fixing system comprises a wharf and a ground anchor, wherein two ends of a floating body farmland are fixed by adopting steel frames, floating bodies are arranged on the steel frames to form the wharf, and the wharf is fixed by the ground anchor;

the fish-catching system comprises a fish-catching net, a steel wire rope, a driven wheel, a driving wheel and a driving motor, wherein a guide rail is arranged on a floating body farmland at two sides of the V-shaped fish groove, the fish-catching net is matched with the V-shaped fish groove for setting and forming, the edge of the fish-catching net is fixed through a bracket, two ends of the top of the fish-catching net are erected on the guide rail through rollers, the driven wheel and the driving wheel are respectively arranged at two ends of the V-shaped fish groove, the steel wire rope is sleeved on the driven wheel and the driving wheel, the driving wheel is in transmission connection with the driving motor, the top of the fish-catching net is connected with the steel wire rope, a second magnet is arranged at the bottom of the fish-catching net, and the second magnet is close to the shaping element steel;

one end of each of two sealing ends of the V-shaped fish groove is directly sealed by adopting an adhesive and matched with a V-shaped seepage-proof film, the other end of each of the two sealing ends of the V-shaped fish groove is sealed by adopting a V-shaped gate and matched with the adhesive, and the two ends of the top of the V-shaped gate are fixed on a floating body farmland.