A high-yield and high-efficiency breeding method of icefish

Abstract

This invention discloses a high-yield and high-efficiency method for silverfish farming, comprising the following steps in sequence: selection of farming water area, removal of unwanted fish from the water area, elimination of pathogens in the water area, cultivation of feed organisms, stocking of seedlings, ecological management, and efficient harvesting. The stocking of seedlings adopts a rotational harvesting and stocking method: seedlings are released in batches; 10%-20% of fertilized eggs are added annually to achieve resource proliferation. This silverfish farming method allows for autumn harvesting, enabling silverfish to reach a marketable size of 4-6cm. Spring harvesting (March-April) achieves pre-breeding harvesting, avoiding resource waste and achieving efficient harvesting; large water areas are more conducive to natural proliferation; and batch stocking of seedlings enables year-round production and high yields. The annual addition of 10%-20% of fertilized eggs maintains the population density. The use of silver carp and bighead carp in conjunction with silver carp regulates water quality and improves overall yield. The reasonable yield can reach 15-25 kg per mu (approximately 0.16 acres).

Description

Technical Field

[0001] This invention relates to the breeding of fish fry and fingerlings, and the cultivation of aquatic animals, specifically to a high-yield and high-efficiency method for cultivating silverfish. Background Technology

[0002] In his paper published in *Guangdong Sericulture*, Volume 55, Issue 5, 2021, Ge Zhemin mentioned that silverfish are small, annual fish that live in nearshore or estuary waters and have a wide distribution, found in almost all sea areas. There are also many species of silverfish in my country, about a dozen, typically distributed in the Pearl River, Yangtze River, and Heilongjiang River systems. Silverfish not only have a sweet and delicious taste but are also rich in protein and amino acids, making them highly nutritious. In addition, silverfish grow quickly, reproduce rapidly, are easy to catch, and have extremely high economic value, making them one of the important economic fish species. Ponds should be chosen in sunny and sheltered locations, with adequate aquatic plants around them to facilitate spawning. Because silverfish are gentle in nature and feed on large zooplankton such as cladocerans and copepods throughout their lives, they should not be mixed with other carnivorous or omnivorous fish. In addition, the text mentions aspects such as seedling cultivation, feeding, and daily management. However, it rarely addresses aspects such as increasing silverfish yield and efficient silverfish farming. Existing technologies (such as the patent with publication number CN104585102A: a high-yield silverfish farming method, which uses regular feeding to maintain rotifer density, thereby maintaining the daily feeding amount of adult silverfish and thus increasing yield, but the degree of yield increase is generally limited and does not involve efficient farming) are still rarely mentioned. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-yield and high-efficiency method for silverfish farming. Large water surfaces are more conducive to natural propagation, and seedlings are introduced in batches to achieve high yields year-round. 10%-20% of fertilized eggs are added annually to maintain population density. The use of silver carp and bighead carp in conjunction with these methods regulates water quality and improves overall profitability. A reasonable yield can reach 15-25 kg per mu (approximately 0.16 acres).

[0004] To achieve the above objectives, the technical solution of this invention is to design a high-yield and high-efficiency aquaculture method for silverfish, which includes selecting aquaculture waters, removing unwanted fish from the waters, killing pathogens in the waters, cultivating feed organisms, releasing seedlings, ecological management, and efficient harvesting; wherein, the seedling release adopts a rotational harvesting and release method: seedlings are released in batches; 10%-20% of fertilized eggs are added each year to achieve resource proliferation.

[0005] Selection of aquaculture water area: Select a large water area with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy bottom. The water quality should meet the requirements of pH 6.5-8.5, dissolved oxygen ≥5mg / L, and no pollution.

[0006] To remove unwanted fish from the water: Sprinkle tea seed cake or quicklime throughout the pond;

[0007] Eliminate pathogens in the water: Disinfect with bleach 7 days after removing unwanted fish from the water.

[0008] Bait organism cultivation: Base fertilizer application: Apply organic fertilizer and urea to large water areas and cultivate the water 15 days in advance;

[0009] Seedling release: Select high-quality eggs with a hatching rate of ≥80% for seedlings; select seedlings that are 1-2cm in length, actively swimming, and free from injury or disease; release fertilized eggs in winter and seedlings in spring.

[0010] Ecological management: efficient feed management, water quality management, and pest control;

[0011] High-efficiency fishing: Fishing should be carried out in autumn, from September to November, when the silverfish reach marketable size, or in spring, from March to April, before breeding. Fishing should be carried out at night using light-attracting methods or by trawling.

[0012] Large water surfaces are more conducive to natural propagation. The target for applying base fertilizer is: zooplankton (cladocerans / copepods) density ≥10mg / L. Select high-quality eggs with a hatching rate ≥80% (such as Taihu silverfish). Choose large, sheltered, and sunny water areas with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy / muddy bottom. Alternatively, if the actual water area cannot fully meet these requirements, artificial devices can be used to improve the environment and achieve shelter and sunshine.

[0013] High-yield measures include: 1. Rotational harvesting and stocking: releasing seedlings in batches to achieve year-round production. 2. Resource enhancement: replenishing 10%-20% of fertilized eggs annually to maintain population density. 3. Polyculture for increased efficiency: adding silver carp and bighead carp (50-100 fish / acre) to regulate water quality and improve overall yield. Optimal yield: 15-25 kg / acre (large water surface).

[0014] The application rate of tea seed cake is 10-15 kg / mu; the application rate of quicklime is 50-75 kg / mu; the application rate of bleaching powder is 1-2 kg / mu; the organic fertilizer is chicken manure, with an application rate of 100-150 kg / mu; and the application rate of urea is 3-5 kg / mu.

[0015] When releasing fertilized eggs, choose a time when the water temperature is 5-10℃ in winter; the release density should be 5000-10000 eggs / acre, and the fertilized eggs should sink to the bottom of the water to avoid direct sunlight; when releasing seedlings, choose a time when the water temperature is ≥10℃ in spring; the release density should be 2000-3000 seedlings / acre, and the seedlings should be allowed to recover on a sunny morning to reduce stress.

[0016] Effective bait management includes: regulation of natural bait and artificial supplementation;

[0017] Natural feed management involves applying amino acid fertilizer or EM bacteria every 10-15 days.

[0018] Artificial supplementation involves adding rotifers or microencapsulated feed when plankton is insufficient.

[0019] The dosage of amino acid fertilizer is 2-3 kg / mu; the dosage of EM bacteria is 5 L / mu; and the dosage of rotifers or microencapsulated feed is 3%-5% of the fish's body weight.

[0020] Regular topdressing (every 10-15 days): 2-3 kg / mu of amino acid fertilizer paste or EM bacteria (5 L / mu). Maintain peak zooplankton levels and prevent cyanobacterial blooms. Artificial feeding (if necessary): Suitable stage: when plankton is insufficient or when culture is high-density. Recommended feed: Rotifers, Artemia nauplii (suitable for fry). Microencapsulated feed (0.2-0.5 mm particle size) (suitable for adult fish). Feeding amount: 1-2 times daily, at 3%-5% of the fish's body weight.

[0021] Water quality management includes: changing 20% ​​to 30% of the water every month, increasing oxygen during high-temperature periods to ensure dissolved oxygen ≥ 5 mg / L, and regularly adding quicklime to adjust pH.

[0022] The amount of quicklime used is 10-15 kg / mu; adjust the pH to 7.5-8.5.

[0023] The pH is adjusted to 7.5-8.5, which is a slightly alkaline water body, suitable for silverfish farming.

[0024] Adjust the pH to 7.8~8.3.

[0025] The optimal pH range for plankton reproduction is 7.8 to 8.3.

[0026] In the water quality management process, silver carp and bighead carp are also raised together, with a stocking density of 50-100 fish per acre.

[0027] Predator control measures include setting up barrier nets with a mesh size of ≤0.5cm to prevent escape.

[0028] Select a large, sunny body of water with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy bottom, and use artificial devices to help improve the environment to achieve shelter from the wind and face the sun.

[0029] The artificial device includes a windbreak net; the windbreak net is set up on the upwind side of the water area, 10-20 meters away from the aquaculture area.

[0030] This reduces the requirements for choosing a water area, allowing for the selection of sunny but not windproof locations. Artificial devices can be used to improve the environment and achieve wind protection and sunshine. Moreover, this device also takes into account predator control, as the waterbird control device that would otherwise need to be set up separately can be directly installed on the windproof netting. Utilizing the unsheltered environment itself can better ensure the waterbird control effect of the device.

[0031] The windbreak net is made of high-density polyethylene treated with UV resistance. The windbreak net has a permeability of 30% to 40% and an aperture of 1 to 2 cm.

[0032] An inflatable scarecrow is set on the windbreak net. The inflatable scarecrow consists of an upper main body and a lower leg section. The main body and the lower leg section are two independent inflatable air bladders, and the lower end of the main body is connected to the upper end of the lower leg section.

[0033] A howler is installed on one side of the lower leg section. The switch of the howler is located away from the network cable. The lower part of the main body extends diagonally downward with a protruding part. The protruding part is a short distance away from the switch of the howler.

[0034] Rotating windmills are also installed on the windbreak net, and the surface of the rotating windmills is made of reflective material.

[0035] The whistling device is fixedly connected to the mesh cable of the netting. The shaft of the rotating windmill is fixedly connected to the mesh cable of the windproof netting.

[0036] Inflatable scarecrows are placed on the windbreak net, which sway more violently when the wind blows, triggering the whistling device inside the scarecrow to scare away water birds. A rotating windmill is also installed on the windbreak net, with a reflective surface that uses flashing light to drive away birds. Thus, the windbreak device also serves as a water bird control device (or it can be seen as a windbreak net that is also a bird net).

[0037] The lower part of the lower leg is fixedly connected to the mesh line of the windproof netting and is positioned to avoid the shade netting on the leeward side of the windproof netting; the position of the rotating windmill's axis also avoids the shade netting on the leeward side of the windproof netting.

[0038] The artificial device also includes a shade net wound onto the windbreak net, with the winding shaft positioned above the shade net and on the leeward side of the windbreak net. Strips of magnetorheological elastomer are adhered to the edges of the shade net, and electromagnets are installed on the frame of the shade net or on the winding shaft. Two shade nets are configured, with two winding shafts located above and below the connection point between the windbreak rope and the windbreak net, respectively. The sag length of the upper shade net is less than the vertical distance between the upper winding shaft and the windbreak rope, and the sag length of the lower shade net is less than the vertical distance between the lower winding shaft and the horizontal plane of the large body of water. A shaft seat is fixedly installed on the leeward side of the windbreak net, and the winding shaft is rotatably mounted on the shaft seat. The upper end of the shade net is fixedly connected to the winding shaft and wound onto it.

[0039] This configuration allows the windproof device to also function as a sunshade and bird deterrent. The electromagnet's installation location is based on existing technology and can generally be either built-in or externally attached. Option 1: Built-in electromagnet (hollow winding shaft); suitable for winding shafts with a large diameter (≥80mm), allowing for the electromagnet to be accommodated. A groove needs to be cut into the winding shaft surface to embed a magnetically conductive material (such as silicon steel sheet) to enhance magnetic field radiation efficiency. Option 2: Externally attached electromagnet (on the winding shaft surface). Mounting base: A metal bracket (such as aluminum alloy) is welded or bolted to the winding shaft surface. The flat electromagnet is screwed onto the bracket, ensuring close contact with the shaft surface. A wire groove is arranged along the side of the winding shaft to prevent tangling. Further details are omitted.

[0040] Current technologies employ either integrated windbreak and sunshade netting or a double-layered structure. If integrated, it's composite with the windbreak netting through a sandwich or weaving process. If a double-layered structure, it's horizontally suspended below the leeward side of the windbreak netting (0.5-1 meter away), forming a double-layer buffer. This is a movable design, added during strong summer sunlight and removed in autumn and winter. Integrated composite netting has a high initial cost (approximately 20-30 RMB / ㎡) but is simple to maintain. The double-layered structure has a low initial cost (windbreak netting + sunshade netting approximately 15-25 RMB / ㎡), but requires manual adjustment, which is more cumbersome.

[0041] The lower leg section has an integral extension that extends outwards to one side. The extension is plate-shaped and located at the bottom of the lower leg section. A whistling device is fixedly connected to the upper surface of the extension. The shaft of the rotating windmill is fixedly connected to the shaft seat, and a slip ring is fixedly connected to the bottom of the shaft seat. The lower end of the lower leg section and the extension are fixedly connected to the slip ring. A diagonal rope or thin wire is fixedly connected to the windbreak net. The inclination direction of the rope or thin wire is at an angle to the horizontal or vertical mesh lines of the windbreak net. The slip ring is fitted onto the rope or thin wire. A connecting rope is fixedly connected to the lower end of the slip ring, and a sandbag is fixedly connected to the end of the connecting rope away from the slip ring.

[0042] A rope or thin wire is fixedly connected to the windbreak net (the two ends of the rope or thin wire are fixed to the windbreak net with cable ties); a light weight (such as a sandbag) can be hung at the bottom of the scarecrow to keep it vertical; a similar structure can also be set for the slip ring under the shaft of the rotating windmill (that is, a connecting rope is fixedly connected to the lower end of the slip ring, and a sandbag is fixedly connected to the end of the connecting rope away from the slip ring), so that the reflective material of the windmill faces upward when it slides.

[0043] Because the location was chosen in a sunny, open body of water, the wind was used to rotate the windmills and allow the inflatable scarecrows to slide on the windbreak net, further enhancing the bird-proofing effect. The reciprocating sliding mechanism further strengthens the bird-proofing effect.

[0044] A smart variable frequency industrial fan is installed on one side of the highest point of the rope or thin wire, equipped with a wind speed sensor. The wind speed sensor is connected to the controller signal, and the controller is connected to the smart variable frequency industrial fan signal.

[0045] To further enhance the bird-proofing effect by increasing the frequency of reciprocating sliding and avoiding the situation where the inflatable scarecrow and rotating windmill remain at the top during continuous strong winds (in which case the inflatable scarecrow and rotating windmill will only slide diagonally downwards when the wind stops, thus preventing reciprocating sliding during continuous strong winds), a fan can be installed on one side of the highest point of the rope or thin wire. (A 1000W industrial fan can withstand winds up to level 6; an adjustable power fan, such as a smart variable frequency industrial fan, can cover the entire range and withstand winds from level 1 to 6 (e.g., 50 to 1500W). This fan, connected to a wind speed sensor and a controller, and in turn connected to the smart variable frequency industrial fan, allows the fan to be continuously started and stopped during continuous strong winds, achieving the effect of reciprocating sliding of the inflatable scarecrow and rotating windmill for a short period of time, thus further enhancing the bird-proofing effect.

[0046] The artificial device includes a bird-proof net covering the water surface. The bird-proof net is made of nylon netting with a UV coating on the surface. An air-tight membrane is embedded in the support column of the bird-proof netting. An airtight membrane covering the entire nylon netting is set on the netting, and the membrane is located below the surface of the nylon netting. The air-tight membrane is connected to the air-tight membrane. A solenoid valve is installed on the air-tight membrane, and a pressure relief valve is installed on the membrane.

[0047] The membrane material consists of several independent inflation units, each connected to an inflation pipe; the air compressor is connected to all inflation pipes, the air compressor is connected to the controller signal, and the controller is connected to the sensor signal; the sensor is a camera and a time sensor; when the controller detects that inflation is needed, it starts the air compressor to supply air to the inflation pipe; the controller opens the solenoid valve of the corresponding zone, and the airflow enters the membrane material of that unit, expanding to the set pressure.

[0048] The bird netting covering the water surface is inflatable, providing shade. Partial inflation keeps birds away, while deflation prevents wind damage, achieving three functions in one net. Different inflation levels enable different functions, and the control process is intelligent and requires no manual intervention. The inflation system uses a small, silent air compressor and zoned solenoid valves, with air pressure regulated via a PLC or solar controller. Pressure control is achieved through data feedback from air pressure sensors; once a threshold (e.g., 3 kPa) is reached, the valve closes. When the solenoid valve is de-energized (normally closed), gas inside the membrane is released through a pressure relief valve.

[0049] Bird netting covering the water surface is lower in the middle and higher on both sides. A retractable shade netting is installed above the bird netting, with a gap between the shade netting and the bird netting. Vertical extension posts are welded to the top of the support posts of the bird netting, and several longitudinal cantilever arms are welded to the extension posts. The retractable shaft of the shade netting is set on the extension posts. Strips of magnetorheological elastomer are glued to the edges of the shade netting, and electromagnets are installed on the frame or retractable shaft of the shade netting.

[0050] In this way, the shade net is lowered and rolled up during the summer, and when it needs to be rolled up, it is quickly rolled up by activating an electromagnet. When unrolling, the shade net is unrolled due to its own weight by de-energizing the electromagnet. In the summer, the shade net is laid out directly in the middle of the bird net to achieve quick unrolling, and when it needs to be rolled up, it is quickly rolled up by activating an electromagnet.

[0051] The advantages and beneficial effects of this invention are as follows: Autumn harvesting allows silverfish to reach a marketable size of 4-6cm. Spring harvesting (March-April) enables pre-breeding harvesting, avoiding resource waste and achieving efficient harvesting; large water surfaces are more conducive to natural propagation, and batch stocking of fry allows for year-round production and high yields. Replenishing 10%-20% of fertilized eggs annually maintains population density. Combining silver carp and bighead carp regulates water quality and improves overall yield. A reasonable yield can reach 15-25kg per mu (approximately 0.16 acres). Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the windbreak net in Embodiment 2 of the high-yield and high-efficiency silverfish farming method of the present invention;

[0053] Figure 2 yes Figure 1 A diagram illustrating an inflatable scarecrow;

[0054] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the windbreak netting;

[0055] Figure 4 This is a schematic diagram of Embodiment 3 of the present invention;

[0056] Figure 5 yes Figure 4 Enlarged schematic diagram of the shade net and its winding shaft;

[0057] Figure 6 This is a top view of the windbreak net in Embodiment 4 of the present invention;

[0058] Figure 7 yes Figure 6 A bottom view of an inflatable scarecrow;

[0059] Figure 8 This is a schematic diagram of Embodiment 5 of the present invention;

[0060] Figure 9 yes Figure 8 A top view of the bird protection netting;

[0061] Figure 10 This is a schematic diagram of Embodiment Six of the present invention.

[0062] In the picture: 1. Windproof net; 2. Windproof rope; 3. Inflatable scarecrow; 4. Main body; 5. Lower leg; 6. Whistling device; 7. Protruding part; 8. Rotating windmill; 9. Shade net; 10. Rewinding spool; 11. Extension part; 12. Slip ring; 13. Thin wire; 14. Bird net; 15. Support column; 16. Inflatable unit; 17. Extension column. Detailed Implementation

[0063] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0064] Example 1: This invention is a high-yield and high-efficiency method for silverfish farming, consisting of the following steps: Selection of farming water area: Select a large water area with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy bottom, whose water quality meets the requirements of pH 6.5-8.5, dissolved oxygen ≥5mg / L, and no pollution;

[0065] To remove unwanted fish from the water: Sprinkle tea seed cake or quicklime throughout the pond;

[0066] Eliminate pathogens in the water: Disinfect with bleach 7 days after removing unwanted fish from the water.

[0067] Bait organism cultivation: Base fertilizer application: Apply organic fertilizer and urea to large water areas and cultivate the water 15 days in advance;

[0068] Seedling release: Select high-quality eggs with a hatching rate of ≥80% for seedlings; select seedlings that are 1-2cm in length, actively swimming, and free from injury or disease; release fertilized eggs in winter and seedlings in spring.

[0069] Ecological management: efficient feed management, water quality management, and pest control;

[0070] High-efficiency fishing: Fishing should be carried out in autumn, from September to November, when the silverfish reach marketable size, or in spring, from March to April, before breeding. Fishing should be carried out at night using light-attracting methods or by trawling.

[0071] The target for basal fertilization is: zooplankton (cladocerans / copepods) density ≥10mg / L. Select high-quality eggs with a hatching rate ≥80% (such as Taihu silverfish). Choose a large, sheltered, sunny body of water with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy / muddy bottom. Alternatively, if the actual water area cannot fully meet these requirements, artificial devices can be used to improve the environment and achieve shelter and sunshine.

[0072] Efficient fishing strategies include: 1. Optimal fishing time: Autumn (September to November): When silverfish reach marketable size (4-6cm). Spring (March to April): Fishing before breeding to avoid resource waste. 2. Fishing methods: Light trapping (nighttime operation, high efficiency). Trawling (suitable for large-scale harvesting).

[0073] High-yield measures also include: temperature adaptation: in spring, fertilize 15 days in advance when the temperature is 15-20℃. In summer, set up shade nets when the temperature exceeds 32℃ (to reduce the water temperature by 2-3℃).

[0074] The application rate of tea seed cake is 10-15 kg / mu; the application rate of quicklime is 50-75 kg / mu; the application rate of bleaching powder is 1-2 kg / mu; the organic fertilizer is chicken manure, with an application rate of 100-150 kg / mu; and the application rate of urea is 3-5 kg / mu.

[0075] When releasing fertilized eggs, choose a time when the water temperature is 5-10℃ in winter; the release density should be 5000-10000 eggs / acre, and the fertilized eggs should sink to the bottom of the water to avoid direct sunlight; when releasing seedlings, choose a time when the water temperature is ≥10℃ in spring; the release density should be 2000-3000 seedlings / acre, and the seedlings should be allowed to recover on a sunny morning to reduce stress.

[0076] Effective bait management includes: regulation of natural bait and artificial supplementation;

[0077] Natural feed management involves applying amino acid fertilizer or EM bacteria every 10-15 days.

[0078] Artificial supplementation involves adding rotifers or microencapsulated feed when plankton is insufficient.

[0079] The dosage of amino acid fertilizer is 2-3 kg / mu; the dosage of EM bacteria is 5 L / mu; and the dosage of rotifers or microencapsulated feed is 3%-5% of the fish's body weight.

[0080] Water quality management includes: changing 20% ​​to 30% of the water every month, increasing oxygen during high-temperature periods to ensure dissolved oxygen ≥ 5 mg / L, and regularly adding quicklime to adjust pH.

[0081] The dosage of quicklime is 10-15 kg / mu; adjust the pH to 7.5-8.5. More preferably, it is 7.8-8.3.

[0082] In the water quality management process, silver carp and bighead carp are also raised together, with a stocking density of 50-100 fish per acre.

[0083] Predator control measures include setting up barrier nets with a mesh size of ≤0.5cm to prevent escape.

[0084] Predator control also includes using bird deterrents to control waterfowl and regularly clearing weeds to control ferocious fish.

[0085] Example 2: The difference from Example 1 is that, as shown in Example 2... Figures 1 to 3 As shown, select a large, sunny body of water with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy bottom, and use artificial devices to help improve the environment to achieve shelter from the wind and face the sun;

[0086] The artificial device includes a windbreak net 1; the windbreak net is set up in the upwind direction of the water area, 10-20 meters away from the aquaculture area, to avoid the net's shadow affecting the distribution of plankton.

[0087] The windbreak net is made of high-density polyethylene (HDPE) (30%~40% air permeability, 1~2cm aperture) and is treated with UV resistance.

[0088] Shade nets are generally made of black or dark green (shading rate 50%~70%, common specifications are 6-needle / 8-needle); the material is made of UV-resistant polyethylene or polypropylene flat yarn woven or polyester fiber woven.

[0089] Windbreak netting 1 is generally equipped with windbreak ropes, using steel wire ropes (diameter ≥4mm) or nylon ropes, and is fixed diagonally (windbreak netting 1 leans forward into the wind, windbreak rope 2 is pulled backward away from the wind) to enhance wind resistance. A tilted windbreak netting (wind-guiding structure) structure is commonly used: the net surface forms a 30°~45° angle with the ground, with the higher side facing the wind direction (e.g., higher in the north and lower in the south). The slope guides the wind upward, reducing direct impact. The structure of the windbreak netting also includes main columns, crossbeams / tie rods, diagonal braces, and ground anchor foundations, which are existing technologies and will not be described in detail.

[0090] An inflatable scarecrow 3 is set on the windbreak net 1. The inflatable scarecrow includes an upper main body 4 and a lower leg part 5. The main body and the lower leg part are two independent inflatable air bladders, and the lower end of the main body 4 is connected to the upper end of the lower leg part 5. With this setting, the inflatable scarecrow shakes more violently when the wind blows.

[0091] A whistling device 6 is fixedly connected to the mesh cable of the windproof net 1 on one side of the lower leg part 5. The switch of the whistling device is located away from the mesh cable. A protruding part 7 extends diagonally downward from the lower end of the main body part 4. The protruding part is a short distance away from the switch of the whistling device. When the inflatable scarecrow is blown by the wind, the protruding part presses against the switch of the whistling device, so that the whistling device sounds when the inflatable scarecrow is blown by the wind. A rotating windmill 8 is also installed on the windproof net 1. The shaft of the rotating windmill is fixedly connected to the mesh cable of the windproof net. The surface of the rotating windmill is made of reflective material.

[0092] The lower part of the lower leg is fixedly connected to the mesh line of the windbreak netting, and its position avoids the shade netting on the leeward side of the windbreak netting. The axis of the rotating windmill is also positioned to avoid the shade netting on the leeward side of the windbreak netting.

[0093] Example 3: The difference from Example 2 is that, as shown in Example 3... Figure 4 , Figure 5 As shown, the artificial device also includes a shade net 9 that is rolled up on the windbreak net 1, with the winding shaft 10 located above the shade net. This allows the shade net to be quickly unrolled using its own weight. The shade net 9 is located on the leeward side of the windbreak net 1, thus not interfering with the inflatable scarecrow or the rotating windmill. Strips of magnetorheological elastomer are glued to the edges of the shade net, and electromagnets are installed on the frame or winding shaft of the shade net. In summer, the rolled-up shade net is lowered, and when it needs to be rolled up, the electromagnets are activated for rapid winding. When unrolling, the electromagnets are de-energized, allowing the shade net to unroll due to its own weight. This simplifies the manual adjustment process, requiring almost no manual intervention; simply turning the electromagnets on and off is sufficient. Two shade nets can be used, each with a corresponding winding shaft, thus avoiding the windbreak ropes and ensuring that the bottom of the freely hanging shade nets does not contact the windbreak ropes or the horizontal surface of the large body of water when unrolled. A shaft seat is fixedly installed on the leeward side of the windbreak net, and a winding shaft is rotatably mounted on the shaft seat. The upper end of the shade net is fixedly connected to the winding shaft and wound on the winding shaft.

[0094] Current technologies employ either integrated windbreak and sunshade netting or a double-layered structure. If integrated, it's composite with the windbreak netting through a sandwich or weaving process. If a double-layered structure, it's horizontally suspended below the leeward side of the windbreak netting (0.5-1 meter away), forming a double-layer buffer. This is a movable design, added during strong summer sunlight and removed in autumn and winter. Integrated composite netting has a high initial cost (approximately 20-30 RMB / ㎡) but is simple to maintain. The double-layered structure has a low initial cost (windbreak netting + sunshade netting approximately 15-25 RMB / ㎡), but requires manual adjustment, which is more cumbersome.

[0095] Example 4: The difference from Example 2 is that, as shown in Example 2... Figure 6 , Figure 7 As shown (for ease of illustration), Figure 6(Only a rope or thin wire is shown). The lower leg portion 5 is integrally provided with an extension portion 11 extending outward to one side. The extension portion is plate-shaped and located at the bottom of the lower leg portion. A whistling device 6 is fixedly connected to the upper surface of the extension portion. The shaft of the rotating windmill is fixedly connected to the shaft seat. A slip ring is fixedly connected to the bottom of the shaft seat. The lower end of the lower leg portion 5 and the extension portion are fixedly connected to the slip ring 12. A diagonal rope or thin wire 13 is fixedly connected to the windproof net 1. The inclination direction of the rope or thin wire is at an angle to the horizontal or vertical net lines on the windproof net 1. (After this setting, since the windproof net itself needs to be set facing the wind, the entire net is tilted to the horizontal plane. With this inclined rope or thin wire, the inflatable scarecrow 3 or rotating windmill slidably set on the rope or thin wire can be used when there is wind.) The inflatable scarecrow and the rotating windmill slide diagonally upwards along ropes or thin wires, and downwards diagonally when there is no wind, achieving a reciprocating sliding motion to enhance the bird-proofing effect. Since the windbreak net itself needs to be tilted at an angle of about 30-45° to the horizontal plane to guide the wind upwards, this is utilized by setting inclined ropes or thin wires on the windbreak net, so that when there is wind, the inflatable scarecrow and the rotating windmill slide diagonally upwards along the ropes or thin wires. To avoid interference between the rotating windmill and the inflatable scarecrow sliding separately, several parallel ropes or thin wires can be set up, with one inflatable scarecrow or one rotating windmill sliding on each rope or thin wire. Slip rings are fitted onto the ropes or thin wires; a connecting rope is fixedly connected to the lower end of the slip ring, and a sandbag is fixedly connected to the end of the connecting rope away from the slip ring.

[0096] Example 5: The difference from Example 2 is that, as shown in Example 2... Figure 8 , Figure 9 As shown (for ease of illustration), Figure 8 (Only a portion of the inflatable unit is shown). The artificial device includes a bird-proof net 14 covering the water surface. The bird-proof net is made of nylon mesh with a UV coating. Inflation tubes are embedded in the support columns 15 of the bird-proof net. An airtight membrane material is placed on the nylon mesh, covering the entire nylon mesh. The membrane material is located below the surface of the nylon mesh, and the inflatable tubes are connected to the membrane material. When inflated, the membrane material expands and pushes up the nylon mesh, forming a partial protrusion (dynamic bird protection) or an overall sunshade surface. A solenoid valve is installed on the inflatable tube, and a pressure relief valve is installed on the membrane material.

[0097] The membrane material consists of several independent inflation units 16 (e.g., each inflation unit is a 2m×2m block), each unit is connected to an inflation pipe; the air compressor is connected to the inflation pipe, the air compressor is connected to the controller signal, and the controller is connected to the sensor signal; the sensor is a camera and a time sensor (a DS3231 time sensor with a high-precision real-time clock module can be used to realize inflation to achieve shading during fixed time periods during the summer daytime (e.g., 6:00-18:00); the controller detects when inflation is needed (e.g., timed shading in summer or birds approaching); the camera collects real-time video streams of the breeding farm (e.g., 30fps); the CMOS sensor converts optical signals into electrical signals and outputs RGB or grayscale image frames. The input image is forward-propagated through the YOLO model, and the output is the detection box and class probability; low confidence (<0.7) results are filtered out, and the pixel coordinates of birds are extracted; an embedded processor (e.g., Jetson) is used. The Nano receives camera data and runs a detection algorithm; it calculates the bird's location within the bird netting zone (e.g., dividing the image into a 5×5 grid); it outputs a high-level trigger signal via the GPIO pin; the PLC / relay module receives the processor's TTL signal (3.3V); it drives the solenoid valve coil (12 / 24V) to power on, and the air compressor starts after power-on; the controller controls the bird images captured by the camera (this is existing technology and will not be elaborated). The controller starts the air compressor to supply air to the inflation pipe; the controller opens the solenoid valve of the corresponding zone, and the airflow enters the membrane material of that unit, expanding to the set pressure.

[0098] Example 6: The difference from Example 5 is that, as Figure 10 As shown (for ease of illustration), Figure 10 (Only one retractor is shown) A bird net covering the water surface, the bird net 14 is lower in the middle and higher on both sides, and a retractable shade net is set above the bird net. There is a gap between the shade net and the bird net (the gap is ≥20cm to promote air convection and prevent high temperature and humidity in the interlayer). The top of the support column 15 of the bird net is welded to a vertical extension column 17, and several longitudinal cantilever 18 are welded to the extension column. The retractor 10 of the shade net is set on the extension column 17. Strip-shaped magnetorheological elastomers are glued to the edge of the shade net. Electromagnets are installed on the frame of the shade net or the retractor. In this way, the retractable shade net is lowered in summer, and when it needs to be rolled up, the electromagnet is activated to achieve rapid winding. When unwinding, the shade net is unwound due to its own weight by de-energizing the electromagnet.

[0099] In summer, the shade netting is laid out directly in the middle of the bird netting for quick unrolling, and when it needs to be rolled up, it is rolled up quickly by activating an electromagnet.

[0100] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-yield and high-efficiency breeding method of Pseudolabrus sieboldi, characterized by, The process includes the following steps in sequence: selection of aquaculture area, removal of unwanted fish from the water, elimination of pathogens in the water, cultivation of feed organisms, stocking of seedlings, ecological management, and efficient harvesting. The stocking of seedlings adopts a rotational harvesting and stocking method: seedlings are released in batches; 10%-20% of fertilized eggs are replenished annually to achieve resource proliferation. The aquaculture area selection process involves choosing a large, sunny water surface with an area of ​​500-5000 mu, a water depth of 2-5 meters, and a hard or sandy bottom. Artificial devices are used to improve the environment to achieve shelter from the wind and sunlight. The water quality must meet the requirements of pH 6.5-8.5, dissolved oxygen ≥5mg / L, and no pollution. The process for removing unwanted fish from the water area is as follows: sprinkle tea seed cake or quicklime over the entire pond; The procedure for eliminating pathogens in the water area is as follows: after removing miscellaneous fish from the water area, disinfect with bleaching powder 7 days later; The bait organism cultivation process is as follows: Applying base fertilizer: Applying organic fertilizer and urea to the large water surface area and cultivating the water 15 days in advance; The seedling release process is as follows: select high-quality eggs with a hatching rate of ≥80% for seedlings; select seedlings that are 1-2cm in length, actively swimming, and free from injury or disease; release fertilized eggs in winter and seedlings in spring. The ecological management process includes: efficient bait management, water quality management, and pest control; The efficient fishing process is as follows: fishing is carried out in autumn, from September to November, when the silverfish reach marketable size, or in spring, from March to April, before breeding; fishing is carried out at night using light-attracting methods or by trawling. The artificial device includes a windbreak net; the windbreak net is set up in the windward direction of the water area, 10-20 meters away from the aquaculture area; an inflatable scarecrow is set on the windbreak net, the inflatable scarecrow includes an upper main body and a lower leg part, the main body and the lower leg part are two independent inflatable air bladders and the lower end of the main body is connected to the upper end of the lower leg part. The lower leg section has an integral extension that extends outwards to one side. This extension is plate-shaped and located at the bottom of the lower leg section. A whistling device is fixedly connected to the upper surface of the extension. A rotating windmill is also installed on the windbreak net. The surface of the rotating windmill is made of reflective material. The shaft of the rotating windmill is fixedly connected to a shaft seat, and a slip ring is fixedly connected to the bottom of the shaft seat. Slip rings are fixedly connected to the lower end of the lower leg section and the extension. A diagonal rope or thin wire is fixedly connected to the windbreak net. The inclination direction of the rope or thin wire is at an angle to the horizontal or vertical mesh lines of the windbreak net. The slip ring is fitted onto the rope or thin wire. A connecting rope is fixedly connected to the lower end of the slip ring. A sandbag is fixedly connected to the end of the connecting rope away from the slip ring. A fan is installed on one side of the highest point of the rope or thin wire.

2. The method for high yield and high efficiency breeding of Pseudorasbora parva according to claim 1, characterized in that, The amount of tea seed cake used is 10-15 kg / mu; the amount of quicklime used is 50-75 kg / mu; the amount of bleaching powder used is 1-2 kg / mu; the organic fertilizer is chicken manure, the amount of which is 100-150 kg / mu; and the amount of urea used is 3-5 kg / mu. When releasing fertilized eggs, choose a time when the water temperature is 5-10℃ in winter; the release density should be 5000-10000 eggs / acre, and the fertilized eggs should sink to the bottom of the water to avoid direct sunlight; when releasing seedlings, choose a time when the water temperature is ≥10℃ in spring; the release density should be 2000-3000 seedlings / acre, and the seedlings should be allowed to recover on a sunny morning to reduce stress.

3. The method for high-yield and high-efficiency aquaculture of silverfish according to claim 2, characterized in that, The efficient feed management includes: natural feed regulation and artificial supplementation; the natural feed regulation is: applying amino acid fertilizer or EM bacteria every 10-15 days; the artificial supplementation is: supplementing with rotifers or microencapsulated feed when plankton is insufficient.

4. The method for high yield and high efficiency breeding of Pseudorasbora parva according to claim 3, characterized in that, The dosage of the amino acid fertilizer is 2-3 kg / mu; the dosage of EM bacteria is 5 L / mu; and the dosage of rotifers or microencapsulated feed is 3%-5% of the fish's body weight.

5. The method for high yield and high efficiency breeding of Pseudorasbora parva according to claim 4, characterized in that, The water quality management includes: changing 20% ​​to 30% of the water every month, increasing oxygen during high-temperature periods to ensure dissolved oxygen ≥ 5 mg / L, and regularly sprinkling quicklime to adjust pH.

6. The method of claim 5, wherein the method is characterized by, The amount of quicklime used is 10-15 kg / mu; the pH is adjusted to 7.5-8.

5.

7. The method of claim 6, wherein the method is characterized by, The pH is adjusted to 7.8~8.

3.

8. The method of claim 7, wherein the method is characterized by, In the water quality management process, silver carp and bighead carp are also raised together, with a stocking density of 50-100 fish per acre.

9. The method of claim 8, wherein the method is characterized by, The pest control measures include: setting up barrier nets with a mesh size of ≤0.5cm to prevent escape.

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