A high-efficiency penaeus vannamei breeding system and a breeding method thereof

Abstract

The application relates to the technical field of aquaculture systems, in particular to a high-efficiency white shrimp (Penaeus vannamei) breeding system and a breeding method thereof. The high-efficiency white shrimp breeding system comprises a pond, the pond comprises a liquid oxygen supply assembly, an oxygen increasing pump assembly and a feed scattering device, the liquid oxygen supply assembly comprises a liquid oxygen input device arranged on one side of the pond, a liquid oxygen output device arranged on the liquid surface of the pond and a transmission pipeline connected between the liquid oxygen input device and the liquid oxygen output device, the oxygen increasing pump assembly is arranged on the liquid surface of the pond and cooperates with the liquid oxygen output device to supply oxygen, and the feed scattering device is used for feeding the liquid surface of the pond after the oxygen supply is completed. The oxygen increasing pump assembly and the liquid oxygen supply assembly cooperate, are not affected by the weather, can stably provide oxygen under any climate condition, the liquid oxygen supply mode can provide higher-concentration oxygen, the feeding frequency of aquatic products is improved, the white shrimp is fed in combination with the feed scattering device, and the breeding efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquaculture systems, in particular to a high-efficiency white shrimp (Litopenaeus vannamei) breeding system and a breeding method thereof. BACKGROUND

[0002] White shrimp (Litopenaeus vannamei) has the advantages of strong vitality, wide adaptability to salinity and temperature, strong disease resistance, high survival rate, rapid growth, high meat yield, long water-free survival time, and suitability for high-density breeding. It is the largest shrimp breeding variety in China, and has achieved outstanding economic and social benefits. With the scale development of shrimp breeding industry, commercial aquaculture is mainly high-density and intensive breeding, which greatly improves the yield of white shrimp (Litopenaeus vannamei) in unit water body and significantly enhances the economic benefits of production unit. In aquaculture, the level of dissolved oxygen is a key factor affecting the feeding behavior and overall health of shrimp. Especially in high-density breeding systems, the improvement of dissolved oxygen level can promote metabolism and enhance the vitality and appetite of white shrimp (Litopenaeus vannamei). However, high breeding density and large feeding amount result in the entry of unused nutrients, a large amount of residual feed and feces into the water body. Due to poor water purification capacity, biological residual feed, feces and dead algae in the water produce ammonia nitrogen, leading to a corresponding decrease in dissolved oxygen in the water. When the dissolved oxygen in the water is greatly reduced, it will affect the growth of white shrimp (Litopenaeus vannamei). Due to ammonia nitrogen, nitrite and hydrogen sulfide, these substances easily accumulate under low oxygen conditions and cause stress to white shrimp (Litopenaeus vannamei). Therefore, by improving the dissolved oxygen level, the water quality can be improved to provide a healthier living environment for white shrimp (Litopenaeus vannamei).

[0003] The existing booster pump increases the dissolved oxygen in the water body by pumping the water out and falling back to the water surface. However, the effect of this oxygenation method is limited by factors such as pump flow, lift, etc., and it is difficult to meet the oxygenation needs in high-density breeding or poor water quality scenarios. Moreover, in rainy days, the total amount of oxygen in the air is limited, which leads to the fact that the booster pump needs to consume a large amount of electric energy to run while it cannot guarantee the improvement of dissolved oxygen concentration. In view of the above shortcomings, it is necessary to develop a high-efficiency white shrimp (Litopenaeus vannamei) breeding system and a breeding method thereof to further improve the breeding effect of white shrimp (Litopenaeus vannamei). SUMMARY

[0004] In view of the above-mentioned technical problem that the effect of the oxygenation method of the booster pump in the existing white shrimp (Litopenaeus vannamei) breeding system is limited by factors such as pump flow, lift, and weather, the technical solution adopted by the present application to solve the technical problem is:

[0005] A high-efficiency aquaculture system for Litopenaeus vannamei includes a pond, which comprises a liquid oxygen supply assembly, an oxygenation pump assembly, and a feed dispensing device. The liquid oxygen supply assembly includes a liquid oxygen input device located on one side of the pond, a liquid oxygen output device located on the surface of the pond, and a transmission pipe connecting the liquid oxygen input device and the liquid oxygen output device. The oxygenation pump assembly is located on the surface of the pond and works in conjunction with the liquid oxygen output device to supply oxygen. The feed dispensing device is used to dispense feed onto the surface of the pond after the oxygen supply is completed.

[0006] Furthermore, the liquid oxygen input device includes a vaporization component connected to the liquid oxygen cylinder, a flow meter, and a pressure regulating device; the liquid oxygen output device includes a float plate floating on the water surface, a liquid oxygen output housing connected to the float plate and partially extending into the water, a delivery pump located on the liquid oxygen output housing and connected to the transmission pipeline, and an aeration component connected to the delivery pump.

[0007] Furthermore, the liquid oxygen output housing includes a filter assembly connected to the outside of the aeration element and a rotating assembly that can rotate relative to the filter assembly. The rotating assembly is provided with a support frame, a motor located on the support frame, a rotating shaft connected to the motor, and blades connected to the rotating shaft. The filter assembly is provided with through holes that are submerged in water.

[0008] Furthermore, the filter assembly is provided with an anti-clogging component, which includes a cleaning rod through which the rotating shaft passes and connected to the rotating shaft. The cleaning rod has a cleaning rod groove and a cleaning block slidably connected to the cleaning rod groove, and an elastic reset member located between the inner wall of the cleaning rod groove and the cleaning block. The cleaning block can extend into the through hole.

[0009] Furthermore, the liquid oxygen output housing is provided in two sets, and a buffer distance is provided between the aeration element and the liquid surface.

[0010] Furthermore, the feed spreading device includes a feed spreading shell and a base connected to the bottom of the feed spreading shell. The uppermost layer of the base is provided with a feeding component, a cutting component located below the feeding component, and a blowing component connected to the cutting component. The feed spreading shell has an opening on its outer side, and the blowing component is used to blow the feed cut by the cutting component to the outside of the opening of the feed spreading shell.

[0011] Furthermore, a filter plate is provided between the cutting assembly and the blowing assembly. A rotatable striking assembly that contacts the filter plate is connected to the lower side of the filter plate. A conveying slope is provided on the lower side of the filter plate. A conveying area is provided at the bottom of the conveying slope. The conveying area is located between the blowing assembly and the opening of the feed spreading shell.

[0012] Further, the oxygen increasing pump assembly comprises a support fixed at one end of the pond, a booster pump located on the support, a plurality of buoyancy assemblies symmetrically arranged outside the support, and an anti-rollover assembly connected between the support and the buoyancy assemblies, the anti-rollover assembly comprising a sliding assembly for the buoyancy assemblies to move up and down, and a hinged assembly connected between the sliding assembly and the buoyancy assemblies, when the buoyancy assemblies move upwards along the sliding assembly, the hinged assembly drives the buoyancy assemblies to move towards the center of the support.

[0013] Further, the support comprises an upper panel fixed at one end of the pond, a fixed platform connected with the hinged assembly and used for placing the booster pump, the bottom surface of the upper panel is fixedly connected with a support rod, and a sliding groove is formed in the surface of the support rod; a sliding sleeve is arranged between the inner wall of the sliding groove and the surface of the support rod; the hinged assembly comprises a long arc rod and a short arc rod, one end of the surface of the sliding sleeve is hingedly connected with one end of the long arc rod through a coil spring, the other end of the long arc rod is hingedly connected with one end of the short arc rod, and the other end of the short arc rod is hingedly connected with the surface of the fixed platform; a fixed ring is fixedly connected to the surface of the long arc rod, and the buoyancy assembly is a buoy fixedly connected to the inside of the fixed ring.

[0014] Further, the present application also provides a high-efficiency breeding method of Penaeus vannamei, comprising the following steps:

[0015] S1, install a liquid oxygen input device on one side of the pond, preset the flow of liquid oxygen needed to be delivered at a time, preset the starting time of the oxygen increasing pump assembly, and simultaneously start the liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device; S2, after the liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device run for the preset time, the feed scattering device divides and scatters the feed to the pond at the preset rotating speed; S3, steps S1 and S2 are repeated 3-5 times a day.

[0016] The present application has the following advantages:

[0017] 1. The present application cooperates the oxygen increasing pump assembly and the liquid oxygen supply assembly, is not affected by the weather, and can stably provide oxygen under any climate conditions. The liquid oxygen supply mode can provide higher concentration of oxygen, thereby improving the feeding frequency of Penaeus vannamei. Combined with the feed scattering device for feeding Penaeus vannamei, the breeding efficiency is improved.

[0018] 2. The breeding method of the present application helps to maintain the dissolved oxygen level of the pond through the timed and quantitative supply of liquid oxygen, thereby promoting the healthy growth of Penaeus vannamei. The automatic feed scattering reduces manual labor, while improving the utilization efficiency of feed and the accuracy of feeding. Systematic management helps to improve the predictability and controllability of the entire breeding process, and improve the breeding efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A schematic diagram of a high-efficiency farming system for Penaeus vannamei according to the present application.

[0020] Figure 2 A schematic diagram of another embodiment of a high-efficiency farming system for Penaeus vannamei according to the present application.

[0021] Figure 3 A schematic diagram of a liquid oxygen output device of a high-efficiency farming system for Penaeus vannamei according to the present application.

[0022] Figure 4 A schematic diagram of the internal structure of the liquid oxygen output device (hidden liquid oxygen output shell) according to the present application.

[0023] Figure 5 A schematic diagram of the internal structure of the filter assembly of the liquid oxygen output device (hidden liquid oxygen output shell) according to the present application.

[0024] Figure 6 A schematic diagram of the partial three-dimensional structure of the liquid oxygen output device (hidden liquid oxygen output shell) according to the present application.

[0025] Figure 7 A schematic diagram of the three-dimensional cross-sectional structure of the cleaning rod according to the present application.

[0026] Figure 8 A schematic diagram of the partial three-dimensional structure of the liquid oxygen output device (hidden liquid oxygen output shell) according to the present application.

[0027] Figure 9 A schematic diagram of the three-dimensional structure of the rotating rod according to the present application.

[0028] Figure 10 A schematic diagram of the three-dimensional cross-sectional structure of the rotating shaft according to the present application.

[0029] Figure 11 A schematic diagram of a feed spreading device of a high-efficiency farming system for Penaeus vannamei according to the present application.

[0030] Figure 12 A schematic diagram of the partial three-dimensional structure of the feed spreading device (hidden feed spreading shell) according to the present application.

[0031] Figure 13 A schematic diagram of the partial three-dimensional structure of the feed spreading device (hidden feed spreading shell) according to the present application.

[0032] Figure 14 A schematic diagram of the partial three-dimensional structure of the feed spreading device (hidden feed spreading shell) according to the present application.

[0033] Figure 15 A schematic diagram of Figure 14 A magnified view of part A.

[0034] Figure 16 This is a three-dimensional structural diagram of part of the feed spreading device (hidden feed spreading shell) of the present invention.

[0035] Figure 17 This is a three-dimensional structural diagram of the oxygen pump assembly of the present invention.

[0036] Figure 18 This is a schematic diagram of the fixed platform structure of the oxygen pump assembly of the present invention.

[0037] Figure 19 This is a cross-sectional schematic diagram of the fixed platform of the oxygen pump assembly of the present invention. Detailed Implementation

[0038] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] like Figures 1 to 19 The invention discloses a high-efficiency aquaculture system for Litopenaeus vannamei (whiteleg shrimp), comprising a pond 1. The pond 1 includes a liquid oxygen supply assembly 2, an oxygenation pump assembly 3, and a feed dispensing device 4. The liquid oxygen supply assembly 2 includes a liquid oxygen input device 5 located on one side of the pond 1, a liquid oxygen output device 6 located on the pond surface, and a transmission pipe 23 connecting the input device 5 and the output device 6. The oxygenation pump assembly 3 is located on the pond surface and works in conjunction with the output device 6 to supply oxygen. The feed dispensing device 4 is used to add feed to the pond surface after oxygenation is complete. This invention, through the cooperation of the oxygenation pump assembly and the liquid oxygen supply assembly, can stably provide oxygen under any climatic conditions, unaffected by weather. The liquid oxygen supply method can provide a higher concentration of oxygen, thereby increasing the feeding frequency of Litopenaeus vannamei. Combined with the feed dispensing device, the system improves aquaculture efficiency. This invention has the advantages of simple structure, convenient operation, good oxygenation effect, energy saving, and environmental protection, and is suitable for Litopenaeus vannamei farms of various sizes.

[0040] Furthermore, liquid oxygen is introduced from the liquid oxygen input device to the liquid oxygen output device via a transmission pipeline, and then dissolved into the pond. Compared to traditional air booster pumps, this method can more effectively meet the oxygenation needs of high-density aquaculture or poor water quality conditions. The liquid oxygen supply component is unaffected by changes in atmospheric oxygen content, thus ensuring effective improvement of dissolved oxygen levels in the water even on rainy days or other low-oxygen conditions. Simultaneously, the oxygenation pump component effectively improves oxygen transfer efficiency, thereby reducing energy consumption. The feed dispensing device delivers feed to the pond, allowing feeding to proceed only after ensuring adequate dissolved oxygen levels in the water. Sufficient oxygen levels enhance the activity and feeding appetite of Litopenaeus vannamei, contributing to improved feed utilization and feeding efficiency.

[0041] like Figures 1 to 10The high-efficiency penaeus vannamei aquaculture system includes a liquid oxygen input device 5 and a liquid oxygen output device 6. The liquid oxygen input device 5 includes a gasification component connected to a liquid oxygen bottle, a flow meter, and a pressure regulating device. The liquid oxygen output device 6 includes a floating plate 61 floating on the water surface, a liquid oxygen output housing 62 connected to the floating plate 61 and partially immersed in the water, a delivery pump 63 connected to the liquid oxygen output housing 62 and the transmission pipeline 23, and an aeration component 64 connected to the delivery pump 63. Specifically, the gasification component connected to the liquid oxygen bottle is used to gasify liquid oxygen into gaseous oxygen. The flow meter is used to measure the flow rate of gaseous oxygen to control the input rate of oxygen. The pressure regulating device is used to regulate the pressure of the gas to ensure stable pressure and flow rate when the gas enters the transmission pipeline.

[0042] Further, the floating plate is located on the water surface to carry the liquid oxygen output device and other components, and floats up and down with the change of the water level of the water surface, thereby driving the up and down movement of the liquid oxygen output device and other components. The liquid oxygen output housing is connected to the floating plate and partially immersed in the water, which protects the internal components of the liquid oxygen output device while limiting the direct release of liquid oxygen into the water, reducing the escape of oxygen and improving the utilization rate of oxygen. The delivery pump is located in the liquid oxygen output housing and connected to the transmission pipeline, which is used to deliver the gasified oxygen into the water. The aeration component outputs oxygen through micro-holes, nozzles, or other forms to increase the contact area between oxygen and water molecules, thereby increasing the dissolved oxygen concentration of the water body.

[0043] Optionally, in some embodiments, 8 kilograms of liquid oxygen can be gasified into 1 kilogram of oxygen and dissolved into the water by controlling the flow rate. Further, the combination of the liquid oxygen input device and the liquid oxygen output device integrates the functions of gasification, flow rate regulation, pressure control, and oxygen delivery, which can achieve precise control and regulation of the dissolved oxygen concentration in the water body, thereby improving the oxygenation efficiency of the penaeus vannamei aquaculture system and the water quality management level.

[0044] Specifically, the aeration component is connected to the delivery pump through the aeration component air pipe 641.

[0045] As Figures 1 to 10The high-efficiency penaeus vannamei breeding system includes a liquid oxygen output shell 62, a filter assembly 621 connected to the outside of an aeration member 64, and a rotating assembly 622 rotatable relative to the filter assembly 621. The rotating assembly 622 is provided with a support frame 6221, a motor 6222 located on the support frame 6221, a rotating shaft 6223 connected to the motor 6222, and a blade 6225 connected to the rotating shaft 6223. The filter assembly 621 is provided with a through hole 6211 immersed in water. The filter assembly filters impurities and particles in water through a plurality of regularly spaced through holes, ensures that oxygen delivered into the water passes through the through holes into the pond, and avoids large foreign matters from entering the inside of the liquid oxygen output shell, thereby affecting the contact and dissolution of oxygen and water. Specifically, the motor can drive the rotating shaft and the blade to rotate forward or reverse through forward and reverse rotation. When the rotating shaft rotates, the blade helps to push the water flow, increases the fluidity of the water body, and improves the uniformity of oxygen distribution and the dissolution efficiency.

[0046] Specifically, the through hole enables water with low dissolved oxygen to enter the inside of the liquid oxygen output shell or water with high dissolved oxygen to be delivered from the inside of the liquid oxygen output shell to the pond through the filter assembly, so that the flow of the water body exchanges oxygen, realizes the dissolution of oxygen in the pond, and the rotating assembly stirs the water body and contacts with oxygen. Through forward and reverse rotation, the oxygen dissolved in the water can be quickly moved from the inside of the liquid oxygen output shell to the pond, the water with low dissolved oxygen can enter the inside of the liquid oxygen output shell, and the saturation of the water in the liquid oxygen output shell is avoided.

[0047] As Figures 1 to 10The filter assembly 621 is provided with an anti-blocking assembly 6212, the anti-blocking assembly 6212 includes a cleaning rod 62121 which is penetrated by and connected with the rotating shaft 6223, the cleaning rod 62121 is provided with a cleaning rod groove 621211, a cleaning block 621212 which is slidingly connected in the cleaning rod groove 621211, and an elastic reset member 621213 which is located between the inner wall of the cleaning rod groove 621211 and the cleaning block 621212, and the cleaning block 621212 can extend into the through hole 6211. Specifically, the cleaning rod is connected with the rotating shaft and penetrates through the filter assembly, the cleaning block is located in the cleaning rod groove and is slidingly connected in the groove, when the cleaning rod moves, the cleaning block also moves and can extend into the through hole, and the impurities attached to the edge of the through hole are removed by the physical way of being pushed outward, the elastic reset member which is located between the inner wall of the cleaning rod groove and the cleaning block can ensure that the cleaning block can automatically reset after cleaning a single through hole, and is ready for the next cleaning operation, so that the need for manual intervention is reduced. When the cleaning block does not extend into the through hole, the water body can smoothly move on both sides of the through hole. Specifically, the cleaning block is made of elastic material. The filter assembly is made of elastic material, when the cleaning block extends into the through hole during the rotating process, the abrasion of the cleaning block and the filter assembly can be reduced.

[0048] Further, part of the liquid oxygen output shell is generally placed in water for a long time, when the liquid oxygen output shell machine stops running, the impurities in the water are easy to block the through hole, thereby affecting the effect of dissolved oxygen, through the setting of the anti-blocking assembly, the through hole of the filter assembly can be effectively prevented from being blocked due to the blocking, so as to affect the delivery and dissolution of oxygen, ensure that the oxygen in the water is fully dissolved, improve the water quality, and provide a better environment for the South American white shrimp culture.

[0049] Additionally, the filter assembly 621 includes a filter cylinder 62153, with a filter cylinder fixing sleeve 62156 fixedly connected to its outer wall. A first slider 62157 is slidably connected to the filter cylinder fixing sleeve 62156. The outer wall of the first slider 62157 is fixedly connected between a rotating rod 62155 and a blade 6225. The rotating rod 62155 has a slot 621551. The filter cylinder 62153 has a filter cylinder groove 621531 for the first slider 62157 to slide. Specifically, the filter cylinder fixing sleeve is circular, allowing the first slider to rotate in the filter cylinder groove, thus driving the blade to rotate. Furthermore, a moving rod 621521 is slidably connected to the rotating shaft 6223. One end of a spring 621524 is fixedly connected to the outer wall of the moving rod 621521, and the other end of the spring 621524 is fixedly connected to the inner wall of the rotating shaft 6223. A locking rod 621525 is fixedly connected to the end of the moving rod 621521. A first sliding sleeve 621522 is fixedly connected to the outer wall of the moving rod 621521. The first sliding sleeve 621522 is slidably connected to the rotating shaft 6223, and a threaded sleeve 621523 is rotatably connected to the first sliding sleeve 621522.

[0050] Furthermore, when the threaded sleeve is threadedly connected to the rotating shaft, the first sliding sleeve, which is rotatably connected to the threaded sleeve, drives the moving rod to slide downward. At the same time, the spring undergoes elastic deformation. When the moving rod slides downward, the locking rod fixedly connected to the bottom of the moving rod will be locked into the slot, thus completing the locking with the rotating rod. Then the motor is started, and the blades will rotate under the action of the rotating rod, thereby accelerating the oxygen and water fusion efficiency.

[0051] like Figures 1 to 10 The illustrated high-efficiency aquaculture system for Litopenaeus vannamei includes two sets of liquid oxygen output shells 62, and a buffer distance between the aeration element 64 and the liquid surface. Furthermore, by setting two sets of liquid oxygen output shells, the stability and reliability of the system can be increased. Even if one set fails or requires maintenance, the other set can continue to operate, ensuring that the oxygen supply in the water is not affected. The buffer distance ensures that there is sufficient space between the aeration element and the liquid surface. After oxygen is released from the aeration element, it first contacts the water boundary layer in the air, which increases the oxygen dissolution time to some extent, helping to improve the oxygen dissolution efficiency in the water and allowing oxygen to contact the water more fully, thus improving the oxygen dissolution efficiency. The buffer distance, formed by the floating plate and the liquid oxygen output shell partially extending into the water, can better adapt to changes in water level, maintaining a stable operating state. Regardless of whether the liquid level rises or falls, it can maintain an appropriate distance between the aeration element and the water surface.

[0052] Further, the floating plate is symmetrically provided with two blocks, and each liquid oxygen output shell is provided with a control valve, and the height of the aeration member is higher than the uppermost plane of the floating plate, so that the aeration member does not contact the liquid surface when the aeration member generates gas. Since the liquid oxygen is transported under high pressure after gasification, and the temperature is lower than the ambient temperature, when the liquid oxygen is directly input into the water after gasification, the solubility will be reduced, and if the liquid oxygen is directly input into the water without complete gasification, the heat released by the gasification of the liquid oxygen will rapidly heat the water body, and at the same time, it is easy to cause the water surface to boil sharply, and the large temperature difference is easy to cause adverse effects on the South American white shrimp, and the gas will rapidly escape, which causes the oxygen to be unable to mix into the water, and the setting of the buffer distance can avoid the water from flowing back to the aeration member, and avoid the safety hidden danger caused by the water being directly sucked into the delivery pump or even the delivery pipeline and contacting the liquid oxygen which is not completely gasified. Further, the biological floc needs high dissolved oxygen in the formation stage to enable the microorganisms in the floc to grow and reproduce at a high speed in a suitable environment, and also needs moving water flow to prevent the floc from settling. The filter assembly of the present application can drive the liquid around the aeration member to flow, which can improve the diffusion of dissolved oxygen in the water body, and at the same time, the process of the blade stirring the water is not too violent, and the stirring of the water body can make the biological floc in a suspended state, reduces the formation of deposition dead corners, the process of liquid oxygen dissolution is gentle, which can enable the biological floc to gather, and can avoid the floc in the water from being excessively stirred, which causes the flocculation body to be easily broken and unable to combine and grow.

[0053] As Figures 11 to 16The high-efficiency breeding system for penaeus vannamei shown in the embodiment comprises a feed spreading device 4, and the feed spreading device 4 comprises a feed spreading shell 41 and a base 42 connected to the bottom of the feed spreading shell 41. The uppermost layer of the base 42 is provided with a feeding assembly 421, a cutting assembly 422 located on the lower side of the feeding assembly 421, and a blowing assembly 423 connected to the cutting assembly 422. The outer side of the feed spreading shell 41 is provided with a feed spreading shell opening 44, and the blowing assembly 423 is used to blow the feed cut by the cutting assembly 422 to the outside of the feed spreading shell opening 44. Specifically, the feeding assembly is funnel-shaped with a wide upper part and a narrow lower part, which is used to introduce the feed into the device for subsequent processing. The cutting assembly is located below the feeding assembly and is used to cut and process the feed so that it is more suitable for spreading. At the same time, the feed is cut to a size suitable for penaeus vannamei to eat, ensuring that the feed can be more easily digested and absorbed, and improving the utilization rate of the feed. The blowing assembly is connected to the cutting assembly and generates a directional airflow to quickly and uniformly blow the cut feed particles to the outside of the feed spreading shell opening and spread them on the surface of the pond, so that penaeus vannamei can more widely ingest food and avoid the accumulation of feed in one place. The feed spreading device can realize automatic feed spreading, improve the efficiency of feed delivery, reduce the need for manual operation, and also ensure uniform feed delivery, which can effectively disperse the feed in the specified area and ensure that aquatic organisms can timely obtain sufficient feed, thereby ensuring their growth and health. In addition, the feed spreading device 4 is provided with a photovoltaic assembly and a feed spreading control assembly. The photovoltaic assembly can absorb sunlight to store and release electrical energy, ensuring the endurance of the feed spreading device. The feed spreading control assembly can control the spreading time of the feed spreading device, effectively controlling the feeding time and frequency of penaeus vannamei.

[0054] As Figures 11 to 16The efficient penaeus vannamei farming system, the cutting assembly 422 and the air blowing assembly 423 are provided with a filter plate 424, the lower side of the filter plate 424 is connected with a knocking assembly 425 which is rotatable and in contact with the filter plate 424, the lower side of the filter plate 424 is provided with a conveying slope 426, the bottom of the conveying slope 426 is provided with a conveying area 427, the conveying area 427 is located between the air blowing assembly 423 and the feed scattering housing opening 44. Further, the filter plate is located between the cutting assembly and the air blowing assembly, which can effectively filter out impurities and larger particles in the feed, only the feed of appropriate size after cutting and processing can enter the conveying slope, ensuring the quality of the scattered feed. The knocking assembly is rotatable and in contact with the filter plate, located on the lower side of the filter plate. The knocking assembly performs knocking action when close to the filter plate, to help separate the feed particles adhered to the filter plate due to electrostatic force or pressure, and keep the filter plate unobstructed. The conveying slope is used to guide the feed to the appropriate position. The bottom of the conveying slope is provided with a conveying area, which ensures that the feed can smoothly reach between the air blowing assembly and the feed scattering housing opening, facilitating the scattering operation of the feed. The setting of the conveying slope not only simplifies the conveying process of the feed, but also improves the conveying efficiency of the feed.

[0055] Further, the fodder sowing shell 41 is provided with a crushing barrel 413, the cutting assembly 422 is located in the crushing barrel 413, the fixed plate 418 is fixedly connected with the first motor 417 below, the cutting assembly 422 is located below the first motor 417, the cutting assembly 422 comprises a rotating wheel one 42291, the rotating wheel one 42291 is fixedly connected with the output shaft of the first motor 417, a round rod 422917 is fixedly connected below the rotating wheel one 42291, a crushing rod 422918 is fixedly connected around the outer wall of the round rod 422917, the knocking assembly 425 comprises the following structure, and specifically as follows: the rotating wheel one 42291 is drivingly connected with a conveying belt one 42292, one end of the conveying belt one 42292 away from the rotating wheel one 42291 is drivingly connected with a rotating wheel two 42293, the rotating wheel two 42293 is fixedly connected with a rotating shaft one 42294, the rotating shaft one 42294 is rotatably connected with a fixed plate one 42295, and the fixed plate one 42295 is fixedly connected with the outer wall of the fodder sowing shell 41, a fixed plate two 42296 is fixedly connected below the fixed plate one 42295, a bevel gear two 422910 is fixedly connected below the rotating shaft one 42294, the bevel gear two 422910 is engaged with a bevel gear one 42299, the bevel gear one 42299 is fixedly connected with a rotating shaft two 42298, and the rotating shaft two 42298 is rotatably connected with the fixed plate two 42296, further, a rotating block 422911 is fixedly connected to one end of the rotating shaft two 42298 away from the fixed plate two 42296, the rotating block 422911 is fixedly connected with a cylinder 422921, the cylinder 422921 is slidingly connected with a connecting rod 422912, the connecting rod 422912 is fixedly connected with a fan-shaped block 422915, the fan-shaped block 422915 is rotatably connected with a fixed plate three 422916, the fixed plate three 422916 is fixedly connected below the fixed plate one 42295, a plurality of tooth blocks are fixedly connected below the fan-shaped block 422915, the plurality of tooth blocks are engaged with a gear 422913, the gear 422913 is fixedly connected with a rotating rod 422914, the rotating rod 422914 penetrates through the inner wall of the fodder sowing shell 41, and an outer wall of one end of the rotating rod 422914 away from the gear 422913 is fixedly connected with the knocking assembly 425, such as a knocking hammer 4250.

[0056] Further, the filter plate is provided with mesh holes, the feed to be cut is loaded through the feeding opening of the feeding assembly, the motor is started to drive the rotation of the rotating wheel one and the round rod, the rotation of the round rod drives the crushing rod to crush the feed in the crushing barrel, the crushed feed falls to the conveying slope below through the filter plate, and then falls to the feed spreading shell opening through the conveying slope, is blown out by the blowing assembly 423, under the action of the conveying belt one, the rotation of the rotating wheel one drives the rotation of the rotating wheel two, thereby driving the rotation of the shaft one, further driving the rotation of the bevel gear two, the bevel gear two drives the rotation of the bevel gear one, thereby driving the rotation of the shaft two, further driving the rotation of the rotating block and the cylinder, thereby driving the back-and-forth swinging movement of the connecting rod and the sector block, under the action of the tooth block below the sector block and the gear meshing with the tooth block, the back-and-forth swinging of the sector block drives the back-and-forth swinging of the gear, thereby driving the back-and-forth rotation of the rotating rod, further driving the back-and-forth movement of the hammer to knock and vibrate below the filter plate, so as to knock down the feed blocked in the mesh holes of the filter plate and fall to the inclined plate below and then to the spreading opening.

[0057] Further, the feed spreading device loads the feed to be cut into the crushing barrel through the feeding opening, starts the motor to drive the rotation of the rotating wheel one and the round rod, the rotation of the round rod drives the crushing rod to crush the feed in the crushing barrel, the crushed feed falls to the inclined plate below through the filter plate, and then falls to the spreading opening to spread the feed. Under the action of the conveying belt one, the rotation of the rotating wheel one drives the rotation of the rotating wheel two, thereby driving the rotation of the shaft one, further driving the rotation of the bevel gear two, the bevel gear two drives the rotation of the bevel gear one, thereby driving the rotation of the shaft two, further driving the rotation of the rotating block and the cylinder, thereby driving the back-and-forth swinging movement of the connecting rod and the sector block, under the action of the tooth block below the sector block and the gear meshing with the tooth block, the back-and-forth swinging of the sector block drives the back-and-forth swinging of the gear, thereby driving the back-and-forth rotation of the rotating rod, further driving the back-and-forth movement of the hammer to knock and vibrate below the filter plate, so as to knock down the feed blocked in the mesh holes of the filter plate and fall to the inclined plate below and then to the spreading opening to spread the feed.

[0058] Specifically, the conveying area 427 includes a tilting channel 4271 connected to the outside of the crushing barrel, and a blowing expansion 4272 connected to the feed spreading shell opening, and the tilting channel and the blowing expansion are communicated. The blowing expansion is inclined from bottom to top, so that the feed moves upward under the blowing of the blowing assembly, and can float further away. In addition, the blowing assembly includes a blower, which is fixed to the lower side of the bottom plate or the inner side of the feed spreading shell. Further, the upper side of the feed spreading shell is provided with a cover to prevent moisture from entering the feeding assembly and affecting the dryness of the feed.

[0059] Further, the feeding assembly comprises an upper large and lower small feeding hopper 4201, a movable feeding plate 4202 located at the lower side of the feeding hopper, a feeding groove 4207 located at the lower side of the feeding plate, a feeding limiting rod 4203 connected with the feeding plate and fixed at the inner side of the feed spreading shell, a feeding motor 4204 connected with the feeding plate and fixed at one end of the inner side of the feed spreading shell, a feeding movable rod 4205 connected between the feeding motor and the feeding plate, the feeding plate is provided with an avoiding groove 4206 for limiting the feeding limiting rod forward and backward, when the feeding motor is started, the feeding movable rod pushes the feeding plate to move forward to the closed position, the limiting rod and the avoiding groove limit the feeding plate to continue to move, the feeding plate is located between the feeding groove and the feeding hopper, at this time, the feeding cannot continue. When the feeding movable rod pushes the feeding plate to move backward to the open position, the limiting rod and the avoiding groove limit the feeding plate to continue to move, the feeding plate is away from the feeding groove and the feeding hopper, at this time, the feeding can continue. The feeding motor can be a stepping motor, a lead screw motor and the like.

[0060] In addition, the base is further connected with a first floating plate 4200 and a second floating plate 4208 and a driving assembly for supporting the entire feed spreading shell and driving the feed spreading device to move on the water surface. The driving assembly comprises a driving motor and a stirring paddle 420. In addition, the air blowing assembly comprises four air blowers and is located at the four corners of the conveying area, the conveying slope is in the shape of a pyramid, the conveying slope comprises four slope surfaces corresponding to the conveying area one by one, and the opening of the feed spreading shell is also provided with four, so that the feed can be spread from four sides of the feed spreading shell at the same time, improving the efficiency of spreading.

[0061] Optionally, in some embodiments, the driving feed spreading device is also provided with a control member and a photovoltaic cell assembly connected with the control member. The driving feed spreading device can be charged by the photovoltaic cell assembly under sunlight, improving the use convenience of the driving feed spreading device. In addition, the control member comprises a remote control assembly, the user can connect to the remote control assembly through wireless network, Bluetooth, infrared and the like, and remotely control the movement of the driving feed spreading device by using control tools such as computer, mobile phone, remote control and the like. In addition, the control member can adjust the size of the feed according to the growth cycle of the white shrimp, specifically, when the growth cycle of the white shrimp is the fry period, the control member controls the rotation speed of the cutting assembly to speed up, so that the size of the feed is further reduced, when the growth cycle of the white shrimp is the adult shrimp period, the control member controls the rotation speed of the cutting assembly to slow down or even not to rotate, so that the size of the feed meets the feeding of the white shrimp, avoiding that the too fine feed cannot be fed by the adult shrimp and directly dissolved in the pond to cause environmental pollution and waste.

[0062] As Figures 17 to 19The high-efficiency breeding system for Penaeus vannamei is shown, the oxygen-increasing pump assembly 3 comprises a support 31 fixed at one end of the pond, a booster pump located on the support 31, a plurality of buoyancy assemblies 32 symmetrically arranged outside the support 31, and an anti-rollover assembly 33 connected between the support 31 and the buoyancy assemblies 32, the anti-rollover assembly 33 comprises a sliding assembly 331 for the buoyancy assemblies 32 to move up and down, and a hinged assembly 332 connected between the sliding assembly 331 and the buoyancy assemblies 32, when the buoyancy assemblies 32 move upwards along the sliding assembly 331, the hinged assembly 332 drives the buoyancy assemblies 32 to move towards the center of the support 31. Further, the support fixed at one end in the pond can provide a structural foundation. The support provides a mounting position for the booster pump and other components, the booster pump is located on the support, which is used to inhale oxygen from the external environment and deliver it to the pond after pressurization, so as to increase the oxygen content in the water body, the buoyancy assembly is provided with a plurality of components symmetrically arranged outside the support, which has buoyancy and is used to support the entire oxygen pressurization system and ensure that the system can float on the water surface. The sliding assembly can move the buoyancy assembly up and down when needed to adapt to the change of water level in the pond, the hinged assembly is connected with the sliding assembly and the buoyancy assembly, when the water level changes, the hinged assembly can drive the buoyancy assembly to switch between the unfolded state and the folded state relative to the support under the action of buoyancy. Since the support is fixed at one end in the pond, when the water level rises, the buoyancy assembly moves upwards along the sliding assembly, and the hinged assembly drives the buoyancy assembly to move towards the center of the support, thereby maintaining the balance and stability of the system and preventing rollover or other adverse conditions.

[0063] As Figures 17 to 19The efficient penaeus vannamei breeding system comprises a supporting member 31 and a buoyancy assembly 32, wherein the supporting member 31 comprises an upper panel 311 fixed at one end of a pond, a fixed platform 334 connected with a hinged assembly 332 and used for placing a booster pump, the bottom surface of the upper panel 311 is fixedly connected with a supporting rod 312, and the surface of the supporting rod 312 is provided with a sliding groove 3121; a sliding sleeve 313 is arranged between the inner wall of the sliding groove 3121 and the surface of the supporting rod 312; the surface of the sliding sleeve 313 is hingedly connected with one end of a long arc rod 3321, the other end of the long arc rod 3321 is hingedly connected with one end of a short arc rod 3322, and the other end of the short arc rod 3322 is hingedly connected with the surface of the fixed platform 334; the surface of the long arc rod 3321 is fixedly connected with a fixed ring 33211, and the buoyancy assembly 32 is a buoy fixedly connected in the fixed ring 33211. Further, one end of the upper panel is fixed on the pond to provide a basic supporting structure for the whole oxygen pump assembly, the fixed platform is connected with the hinged assembly to bear and install the booster pump, and the booster pump can still work stably in a floating state. The supporting rod is a component fixedly connected below the bottom surface of the upper panel, the surface of the supporting rod is provided with a sliding groove to provide guidance and support for the movement of the buoyancy assembly. The sliding sleeve is arranged between the inner wall of the sliding groove and the surface of the supporting rod, the sliding sleeve can slide up and down in the sliding groove to adapt to the height change of the buoyancy assembly. The sliding sleeve is hingedly connected with the long arc rod by a coil spring, can move up and down with the buoyancy assembly, and transmits force through the hinged assembly to make the buoyancy assembly close to the center of the supporting member when rising. Further, the supporting rod 312 is in an eight-shaped structure from top to bottom, so that the hinged assembly has a certain deformation space, and the hinged assembly is in an unfolded state when moving downward and is in a folded state when moving upward.

[0064] Further, one end of the long arc rod is hingedly connected with the sliding sleeve by a coil spring, the other end of the long arc rod is hingedly connected with the short arc rod, and the long arc rod plays a role of a connecting rod to convert the lifting action of the buoyancy assembly into a force for pushing the buoyancy assembly to close to the center. The short arc rod is hingedly connected with the other end of the long arc rod and the surface of the fixed platform, and the position of the buoyancy assembly is changed by changing the angle of the two hinged points.

[0065] Additionally, the fixed platform 334 comprises a platform shell 334201, a rotating rod 334203, a platform fixing plate 334205, the upper surface of the platform shell 334201 is fixedly connected with a limiting block 334202, the inside of the platform shell 334201 is rotatably connected with the upper surface of the rotating rod 334203, the surface of the rotating rod 334203 is fixedly connected with one end of a spring piece 334204, the other end of the spring piece 334204 is fixedly connected with the surface of the platform fixing plate 334205, and the surface of the platform fixing plate 334205 is fixedly connected with the inside of the platform shell 334201. The upper surface of the rotating rod 334203 is fixedly connected with a fixed buckle 334206, and the upper surface of the rotating rod 334203 is fixedly connected with a pushing rod 334207. Specifically, when it rains, the water surface position is raised, so that the float pushes the sliding sleeve to slide on the surface of the supporting rod, the sliding sleeve is guided by the sliding groove, so that the sliding sleeve rotates, thereby pushing the long arc rod to rotate, so that the long arc rod and the short arc rod start to fold, thereby winding the float to the center, reducing the impact area of the float and the waves, thereby making the oxygen pump assembly have better wind wave resistance effect, thereby greatly reducing the situation of unstable center of gravity caused by lifting too high.

[0066] Further, the oxygen pump assembly is provided with a fixed platform, when it is necessary to install the oxygen pump, the fixed buckle is rotated by pushing the pushing rod, so as to be in an open state, when the oxygen pump is placed in the inside, the pushing rod is loosened, and the rotating rod is rotated under the action of the spring piece, so that the fixed buckle is clamped into the clamping groove at the bottom of the oxygen pump, thereby fixing the oxygen pump, so that the installation and disassembly of the oxygen pump are more convenient.

[0067] A breeding method of a high-efficiency breeding system of penaeus vannamei, comprising the following steps:

[0068] S1, install liquid oxygen input device 5 on one side of the pond, preset the flow of liquid oxygen needed to be transported at one time, preset the starting time of the oxygen increasing pump assembly 3, and the liquid oxygen input device 5, the oxygen increasing pump assembly 3 and the liquid oxygen output device 6 start at the same time; install the liquid oxygen input device on one side of the pond and preset the flow of liquid oxygen needed to be transported at one time. Specifically, install the liquid oxygen input device on one side of the pond, which includes a gasification part, a flow meter and a pressure regulating device, to ensure that liquid oxygen can be stably and safely converted into gaseous oxygen, and its flow and pressure can be accurately controlled. At the same time, according to the size of the pond, the breeding density and the water quality, the flow of liquid oxygen needed to be transported at one time is preset. At the same time, the starting time of the oxygen increasing pump assembly is set to ensure that the pressure and distribution range of oxygen are increased through the booster assembly at the same time as the liquid oxygen input. The starting time of the oxygen increasing pump assembly is set. At the preset time point, the liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device start at the same time to ensure the increase and maintenance of the oxygen content in the water. The liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device start at the same time to ensure that oxygen can be quickly and uniformly distributed throughout the pond to provide sufficient oxygen supply for the South American white shrimp. The liquid oxygen input device controls the amount of liquid oxygen input in cooperation with the liquid oxygen output device to add 0.05-0.1 grams of oxygen per cubic meter of water in the pond per day.

[0069] S2, after the liquid oxygen input device 5, the oxygen increasing pump assembly 3 and the liquid oxygen output device 6 run for the preset time, the feed spreading device 4 divides and spreads the feed to the pond at the preset speed; after the liquid oxygen input device and the oxygen increasing pump assembly start to run, the feed spreading device is started at the end of the preset time. After the liquid oxygen input and oxygen pressure increase run for the preset time, the feed spreading device starts to work. The device divides the feed at the preset speed through the cooperation of the feeding assembly, the cutting assembly and the blowing assembly, and spreads the feed evenly to the pond through the blowing assembly. The uniformity of feed spreading: by adjusting the speed of the feed spreading device and the wind power of the blowing assembly, it is ensured that the feed can be evenly spread to every corner of the pond to meet the feeding needs of the South American white shrimp. According to the preset speed, the feed is divided and spread to the pond to meet the feed needs of aquatic organisms.

[0070] S3, steps S1 and S2 are repeated 3-5 times a day. According to the growth stage, feeding habits and weather conditions of Penaeus vannamei and other factors, the operation frequency can be adjusted appropriately. During the repeated operation, the water quality, the growth of Penaeus vannamei and the feed consumption of the pond need to be closely monitored, and timely adjustment and optimization are needed to ensure the efficient operation of the aquaculture system, maintain the stable increase of oxygen content in the water and meet the feed demand of aquatic organisms. In this way, the water quality in the aquaculture system can be ensured to be good, which is beneficial to the growth and health of aquatic organisms. Through the implementation of the above steps, the efficient Penaeus vannamei aquaculture system can be effectively managed and maintained, and the aquaculture efficiency and yield can be improved. The aquaculture method of the present application helps to maintain the dissolved oxygen level of the pond by providing liquid oxygen in a timely and quantitative manner, thereby promoting the healthy growth of aquatic animals. Automatic feed spreading reduces manual labor while improving feed utilization efficiency and feeding accuracy. Systematic management helps to improve the predictability and controllability of the entire aquaculture process, and improve the efficiency and product quality of aquaculture.

[0071] Specifically, the feeding of the shrimp pond is mainly in the daytime. The traditional manual feeding is once at 7 am, 12 noon and 6 pm every day. The farmer carries the feed on a tool boat and spreads it around the pond once. The disadvantage is that it is time-consuming and labor-intensive, and the feed is fed at one time. However, the feeding speed of prawns is relatively slow, and it usually takes 1.5-2 hours to finish feeding. During this process, part of the nutrients in the feed soaked in the water has been converted into pollutants and released into the water. The soaking time is long, the baiting effect is poor, and the uneaten feed not only wastes resources but also is the main source of water pollution. The method of feeding continuously for 12 hours from 7 am to 7 pm is adopted. The feed spreading device is provided with a photovoltaic module and a feed spreading control module. The feed is spread in batches every few minutes, and the prawns are cleaned in time after each batch is spread. This fundamentally solves the problem of waste of feed in manual feeding, and reduces the pollution of feed to the water. Further, the growth rate of Penaeus vannamei is fast, and 2-3 crops can be cultivated in a year. The cultivation process generally does not drain water, but the pond needs to be drained after each crop is harvested. Therefore, if the tail water is not treated in time, it will bring great pollution risk to the water ecological environment. The current popular tail water treatment mode represented by "three ponds and two dams" is a kind of "ex situ" treatment mode. This mode has the advantages of pond continuous centralized treatment, but also has three disadvantages: first, 5-8% of the pond needs to be planned for water treatment, reducing the production area; second, the construction of water treatment facilities and the purchase of equipment increase the production cost; third, long-term maintenance increases the operation and management cost.

[0072] In order to solve the above problems, the present application also provides a scheme for treating tail water by using biological flocculation. Specifically, sea water is added to the cultivation pond, the salinity is adjusted to about 0.5 to 2.5 percent by using fresh water, the water temperature is controlled at 20-30℃, and then 20-30g / m3 and lime 100 kg / mu water disinfection, etc. aeration 1-2 days water without residual chlorine gas, due to biological flocculation of ammonia nitrogen and nitrite nitrogen removal has a certain lag phenomenon, can be put in front of the biological flocculation culture.

[0073] Specifically, seven days before the seedlings put in EM bacteria and amino acid fertilizer water paste, using bacterial bio-occupation, every morning using nitrosomonas, denitrifying pseudomonas, bacillus subtilis, photosynthetic bacteria and lactobacillus acidophilus whole pool splash, the amount of addition is about nitrosomonas 7.5 x 10 6 cfu·L -1 , denitrifying pseudomonas 6.0 x 10 6 cfu·L -1、 bacillus subtilis 7.0 x 10 6 cfu·L -1 , photosynthetic bacteria 3.0 x 10 8 cfu·L -1 , lactobacillus acidophilus 1.0 x 10 6 cfu·L -1 , while adding brown sugar 1 kg / mu whole pool splash, continuous application for 5-7 days, water appears flocculent particles, biological flocculation begins to form. At this point the seedlings put in the culture pond, shrimp seedlings put in the density of 100-200 tail / m 3 . Put in microalgae water algae concentration reaches 5 x 10 4 cfu / mL. Further, the microalgae is chlorella vulgaris, trenton, arthrospira platensis and arthrospira maxima. Continuous aeration for 15 days, so that the biological flocculation amount reaches 5 ml / L water (half an hour sedimentation amount) and stable.

[0074] Specifically, *Chlorella* and *Scenedesmus* are high-quality single-cell protein sources that can be directly used as feed for shrimp larvae. They can also provide food for small aquatic organisms (such as rotifers, cladocerans, and copepods), which in turn serve as natural food sources for shrimp, thus improving the self-sufficiency of the entire aquaculture system. *Spiralella platensis* and *Spiralella maxima* are rich in protein, vitamins, and minerals, and can significantly improve the growth performance and health of shrimp in the biofloc system during the later stages of aquaculture. The presence of microalgae acts as a "binder" for bioflocs; their secreted extracellular polysaccharides and other substances help flocculate particles, enhancing the physical stability of bioflocs, making them more compact and less prone to dispersion. Microalgae produce oxygen through photosynthesis, increasing dissolved oxygen levels in the water and helping to improve water quality. *Chlorella* and *Scenedesmus* absorb excess nitrogen, phosphorus, and other nutrients, helping to reduce eutrophication, prevent algal blooms, and maintain water cleanliness. Before adding the carbon source, soak the microalgae in a 2-5 mL / L lactic acid bacteria solution for 10 minutes. Within 30 days after seedling release, supplement with organic carbon at 50% of the daily feed intake, and simultaneously introduce Nitrosomonas, Denitrifying Pseudomonas, Bacillus subtilis, photosynthetic bacteria, and Lactobacillus acidophilus every 5 days, with the addition amount being approximately 7.5 × 10⁻⁶ for Nitrosomonas. 6 cfu·L -1 Denitrifying Pseudomonas aeruginosa 6.0 × 10 6 cfu·L -1、 Bacillus subtilis 7.0 × 10 6 cfu·L -1 3.0 × 10⁻⁶ photosynthetic bacteria 8 cfu·L -1 Lactobacillus acidophilus 1.0 × 10 6 cfu·L -1 In the later stages of aquaculture, 30% of the feed should be supplemented with organic carbon. During the aquaculture process, potassium persulfate should be used every 10-20 days to improve the bottom sediment. The pH of the water should be adjusted to between 7.1 and 8.1, and the total alkalinity to between 150 mg and 300 mg / L by adding sodium carbonate solution and quicklime water. In the later stages of aquaculture, the concentration of bioflocs in the water should be kept stable at 15-30 mL / L. No water changes are performed throughout the entire aquaculture process; only a small amount of fresh water is used to replenish water lost through evaporation. In the later stages of aquaculture, a daily concentration of 7.0 × 10⁻⁶ is applied. 6 cfu·L -1 Bacillus subtilis solution 500 g / mu, concentration 1.0 × 10⁻⁶ 6 cfu·L -1 Apply 800 grams of Lactobacillus acidophilus solution per acre, and spray 10 kilograms of EM bacteria solution per acre every 3-5 days to improve the stability of algae. Turn on the aerator within 1 hour after spraying.

[0075] Specifically, Nitrosomonas can oxidize ammonia nitrogen to nitrite. Nitrosomonas itself does not directly participate in the formation of biofloc, but by reducing the ammonia nitrogen content in the water body, it helps to improve water quality and provide a more suitable environment for biofloc growth. Pseudomonas denitrificans has the characteristics of heterotrophic nitrification and aerobic denitrification. They can perform nitrification under aerobic conditions, converting ammonia nitrogen to nitrite and then to nitrate; under anaerobic conditions, they can perform denitrification, reducing nitrate to nitrogen gas, thereby removing nitrogen from the water body. This helps to reduce the nitrogen load in the water body and reduce the accumulation of nitrogen in the biofloc, preventing its excessive growth. Bacillus subtilis is an important component of biofloc. They can secrete a large amount of extracellular polymers such as polyglutamic acid, which helps to form and stabilize biofloc. In addition, Bacillus subtilis can also improve the microbial community structure in biofloc, improving the stability and efficiency of the entire system. Photosynthetic bacteria, especially the photo-organic heterotrophic Rhodospirillaceae, can use small molecular organic matter and inorganic nitrogen to synthesize organic nitrogen compounds, playing a role in degrading ammonia nitrogen and nitrite. In the biofloc system, they can reduce the nitrogen content in this way while producing organic matter to provide carbon sources for other microorganisms. Lactobacillus acidophilus indirectly promotes the formation and stability of biofloc by improving water quality and enhancing the immunity of cultured animals. EM bacteria are composed of multiple beneficial microorganisms and have a wide range of biological activities and functions, including promoting shrimp growth, improving feed utilization, enhancing immune function, and eliminating pollution. Its use is convenient and easy to obtain, but the strengthening effect is not as good as the combination of the above multiple strains.

[0076] During the growth of biofloc, heterotrophic bacteria consume a large amount of alkalinity and produce a large amount of CO2, leading to a decrease in water pH in the culture system; in addition, nitrifying bacteria produce acid substances while utilizing ammonia nitrogen compounds, further lowering the pH of the culture water; also, due to the high density of organisms in the culture system, a large amount of CO2 is produced by the numerous organisms in the late culture period, and the culture water is not replaced during biofloc culture, so the pH of the culture water tends to decrease. Microalgae in the water can utilize CO2 produced by bacteria and larvae for photosynthesis, while bacteria in the water utilize C2 produced by microalgae to degrade C-containing substances. When bacteria dominate the water, more CO2 enters the water, combining with water molecules to form HCO3 -Thus, the pH and alkalinity of the water body are affected, a large amount of microalgae in the water body performs photosynthesis, can absorb nutrients such as soluble N elements, the microalgae can fix the N elements in the water body, and can be fed by the larvae, thereby improving the utilization rate of N elements. At the same time, by reducing the content of N and using organic carbon sources, the present application adjusts the carbon-nitrogen ratio (C / N) in the water body by artificially adding organic carbon substances to the aquaculture water body, improves the number of heterotrophic bacteria in the water body, uses microorganisms to assimilate inorganic nitrogen, converts nitrogen-containing compounds such as ammonia nitrogen in the water body into bacterial proteins, forms biological flocculation bodies that can be directly fed by filter-feeding cultured objects, can solve the problem of detritus and feed retention in the aquaculture water body, realize the reuse of bait, play a role in purifying water quality, reducing water exchange, saving feed, improving the survival rate of cultured objects and increasing yield, etc. Automatic feeding has greater advantages than traditional manual feeding in terms of saving labor, saving feed, reducing feed coefficient, etc. The application of 12-hour continuous automatic precise feeding technology is particularly obvious, which can effectively shorten the breeding cycle, eliminate feed waste, reduce the load on the shrimp gastrointestinal tract, improve the absorption rate of feed nutrients, and at the same time reduce the pollution to the water quality.

[0077] The carbon source is bamboo powder, peanut shell powder, brown sugar, and cassava powder. The type of organic carbon source will affect the establishment rate of biological flocculation and the structure of the bacterial community. Brown sugar can quickly form a large scale in the aquaculture water body, but it will increase the breeding cost in actual production. The carbon sources such as peanut shell powder and bamboo powder are rich in lignin, cellulose and hemicellulose, and cassava powder contains a large amount of starch, which is low in price and stable in system formation, but the system formation scale needs reaction time. Among them, the mixing ratio of bamboo powder, peanut shell powder, brown sugar and cassava powder is 10-20 parts of bamboo powder, 15-25 parts of peanut shell powder, 30-50 parts of brown sugar, and 30-40 parts of cassava powder by mass.

[0078] Further, in order to improve the conversion effect of bamboo powder, peanut shell powder and cassava powder, the bamboo powder, peanut shell powder and cassava powder need to be enzymatically hydrolyzed. Enzymatic hydrolysis helps to release lignin, cellulose and hemicellulose of bamboo powder and peanut shell powder, and by helping to destroy the strong structure of lignin, the release rate of total sugar is improved, which makes it easier to be utilized by microorganisms, thereby accelerating the formation of bio-floc. Enzymatic hydrolysis of cassava powder can efficiently decompose starch into simple sugars, providing a rapid energy source for microorganisms. The organic matter in the enzymatic hydrolysate can be used as a gelling material to promote the adhesion and aggregation between microorganisms, forming a more compact and stable bio-floc, which helps to capture and settle suspended particles, thereby improving water quality. Brown sugar can be rapidly metabolized by microorganisms, accelerating the growth of microbial communities, especially bacteria. Specifically, the preparation method of enzymatically hydrolyzed cassava powder is as follows: sieve the cassava powder with a mesh size of 50, weigh the cassava powder, add water, the mass ratio of material to liquid is 1:3, stir well until a cassava powder aqueous solution is obtained. Add 10 U / g of alpha-amylase to the cassava powder solution according to the mass of the cassava powder. Keep the mixture at 50-60°C, maintain the pH at 6.0-7.0, and let the alpha-amylase act on the cassava powder to decompose the starch molecules. Wait for 2 hours of alpha-amylase action, when the solution viscosity increases, add glucoamylase, add 200 U / g of glucoamylase according to the mass of the cassava powder, continue to maintain the temperature at 60°C and the pH at about 5.0-6.0, and let the glucoamylase convert the remaining amylose into glucose. After 1 hour of saccharification, add 0.01%-0.05% of protease according to the mass of the cassava powder, and enzymatically hydrolyze in a constant temperature water bath at 45°C for 120 minutes, with the pH value at about 5.0-7.0, to degrade the protein components in the solution, and obtain enzymatically hydrolyzed cassava powder.

[0079] Specifically, the preparation method of the enzymatic bamboo powder and peanut shell powder is as follows: the peanut shell powder is sieved with a mesh size of 200, the bamboo powder is sieved with a mesh size of 300, the peanut shell powder and the bamboo powder are weighed, and the peanut shell powder and the bamboo powder are pretreated by being soaked in a 0.1 mol / L dilute sulfuric acid solution for 10 min to remove part of the lignin and soften the fiber structure, thereby improving the enzymatic efficiency, the pretreated peanut shell powder and bamboo powder are added to water in a solid-liquid mass ratio of 1:10, and the mixture is stirred uniformly until a mixture aqueous solution is obtained. Xylanase is added to the mixture solution at a dosage of 5 U / g based on the mass of the mixture. The mixture is incubated at 40-50°C while maintaining the pH at 4.5-5.5, so that the xylanase acts on the hemicellulose in the bamboo powder and the peanut shell. After waiting for 1 hour for the xylanase to act, β-glucosidase is added at a dosage of 20 U / g based on the mass of the mixture, and the temperature is continuously maintained at 45-60°C and the pH is maintained at about 5.0-6.0, so that the β-glucosidase decomposes the produced oligosaccharides. After 30 min of the action of the β-glucosidase, manganese peroxidase is added at a dosage of 0.01%-0.05% based on the mass of the mixture, and the enzymatic hydrolysis is performed in a constant-temperature water bath at 50°C for 60 min while maintaining the pH at about 5.0-6.0, to obtain the enzymatic bamboo powder and peanut shell powder.

[0080] Specifically, during the cultivation process, the dynamic change characteristics of the water quality indicators, the amount of biological flocculation, the amount of bacteria, and the growth of algae in the pond need to be regularly monitored. It is verified whether the five indicators of suspended solids, pH, chemical oxygen demand, total nitrogen, and total phosphorus of the water body in the cultivation pond meet the freshwater aquaculture tail water discharge limit value, and the change conditions of the important water quality indicators affecting the growth of prawns, such as dissolved oxygen, ammonia nitrogen, nitrite, total alkalinity, and total hardness, are verified. The change of the amount of biological flocculation in the pond water is determined, the number of microorganisms such as heterotrophic bacteria is detected, and the dominant species and abundance of microalgae in the middle and late stages are determined. The cultivation performance such as the cultivation period, the survival rate, the unit yield, and the feed coefficient is analyzed. When C / N < 10, the water purification capacity is not high, and the vibrio is easy to grow and reproduce, which is extremely harmful to the prawn culture; when C / N > 15, the biological flocculation can efficiently play a water purification role, and effectively reduce the occurrence of vibrio disease.

[0081] As shown in Figure 1 , Figures 3 to 19 , the implementation of Example 1 is as follows:

[0082] The application discloses a high-efficiency penaeus vannamei breeding system, which comprises a pond 1, a liquid oxygen supply assembly 2, an oxygenation pump assembly 3 and a feed scattering device 4; the liquid oxygen supply assembly 2 comprises liquid oxygen input devices 5 arranged on one side of the pond 1, liquid oxygen output devices 6 arranged on the liquid surface of the pond, and a transmission pipeline 23 connected between the liquid oxygen input devices 5 and the liquid oxygen output devices 6; the oxygenation pump assembly 3 is arranged on the liquid surface of the pond 1 and cooperates with the liquid oxygen output devices 6 to supply oxygen; and the feed scattering device 4 is used for feeding the pond 1 after the oxygen supply is completed. The liquid oxygen supply assembly 2 cooperates with the oxygenation pump assembly 3, and oxygen can be stably supplied under any climate condition without being affected by the weather; the liquid oxygen supply mode can provide higher concentration of oxygen, so that the feeding frequency of the penaeus vannamei is improved; and the penaeus vannamei is fed by the feed scattering device 4, so that the breeding efficiency is improved.

[0083] The application has the advantages of simple structure, convenient operation, good oxygenation effect, energy saving and environmental protection, and is suitable for penaeus vannamei breeding farms of various scales. The liquid oxygen input devices 5 are arranged in a diagonal manner and comprise gasification components connected with liquid oxygen bottles, flow meters and pressure regulating devices. The liquid oxygen output devices 6 comprise floating plates 61 floating on the water surface, liquid oxygen output housings 62 connected to the floating plates 61 and partially immersed in the water, delivery pumps 63 connected to the liquid oxygen output housings 62 and connected with the transmission pipeline 23, and aeration components 64 connected with the delivery pumps 63. The aeration components 64 are connected with the delivery pumps 63 through aeration component air pipes 641. The liquid oxygen output housings 62 comprise filter assemblies 621 connected to the outer sides of the aeration components 64 and rotating assemblies 622 rotatable relative to the filter assemblies 621. The rotating assemblies 622 are provided with support frames 6221, motors 6222 arranged on the support frames 6221, rotating shafts 6223 connected with the motors 6222 and blades 6225 connected with the rotating shafts 6223. The filter assemblies 621 are provided with through holes 6211 immersed in the water. The through holes 6211 are regularly spaced.

[0084] The filter assemblies 621 are provided with anti-blocking assemblies 6212, which comprise cleaning rods 62121 through which the rotating shafts 6223 pass and are connected with the rotating shafts 6223. The cleaning rods 62121 are provided with cleaning rod grooves 621211, cleaning blocks 621212 slidingly connected in the cleaning rod grooves 621211 and elastic return members 621213 arranged between the inner walls of the cleaning rod grooves 621211 and the cleaning blocks 621212. The cleaning blocks 621212 can be inserted into the through holes 6211. The cleaning blocks 621212 are made of elastic material.

[0085] The filter assembly 621 is provided with a filter cartridge 62153, and an outer wall of the filter cartridge 62153 is fixedly connected with a filter cartridge fixing sleeve 62156, the filter cartridge fixing sleeve 62156 is slidably connected with a first sliding block 62157, an outer wall of the first sliding block 62157 is fixedly connected between a rotating rod 62155 and the blade 6225, and the rotating rod 62155 is provided with a clamping groove 621551. The filter cartridge 62153 is provided with a filter cartridge groove 621531 for sliding of the first sliding block 62157. The filter cartridge fixing sleeve 62156 is circularly arranged, so that the first sliding block 62157 is circularly moved in the filter cartridge groove 621531, and the blade 6225 is driven to rotate.

[0086] The rotating shaft 6223 is slidably connected with a movement rod 621521, an outer wall of the movement rod 621521 is fixedly connected with one end of a spring one 621524, the other end of the spring one 621524 is fixedly connected to an inner wall of the rotating shaft 6223, and a terminal end of the movement rod 621521 is fixedly connected with a clamping rod 621525. An outer wall of the movement rod 621521 is fixedly connected with a first sliding sleeve 621522, the first sliding sleeve 621522 is slidably connected with the rotating shaft 6223, and the first sliding sleeve 621522 is rotationally connected with a threaded sleeve 621523. The liquid oxygen output shell 62 is provided with two groups, and a buffer distance is arranged between the aeration member 64 and the liquid surface.

[0087] The cutting assembly 422 and the blowing assembly 423 are provided with a filter plate 424, the filter plate 424 is connected with a knocking assembly 425 which is rotatable and in contact with the filter plate 424, the filter plate 424 is provided with a conveying slope 426 at a lower side, and a bottom of the conveying slope 426 is provided with a conveying area 427, the conveying area 427 is located between the blowing assembly 423 and the feed spreading shell opening 44.

[0088] The fodder sowing shell 41 is provided with a crushing barrel 413, and a cutting assembly 422 is located in the crushing barrel 413. A fixed plate 418 is fixedly connected below the first motor 417. The cutting assembly 422 is located below the first motor 417. The cutting assembly 422 comprises a rotating wheel one 42291. The rotating wheel one 42291 is fixedly connected with the output shaft of the first motor 417. A round rod 422917 is fixedly connected below the rotating wheel one 42291. A crushing rod 422918 is fixedly connected around the outer wall of the round rod 422917. The knocking assembly 425 comprises the following structures and specifically as follows: The rotating wheel one 42291 is drivingly connected with a conveying belt one 42292. One end of the conveying belt one 42292 away from the rotating wheel one 42291 is drivingly connected with a rotating wheel two 42293. The rotating wheel two 42293 is fixedly connected with a rotating shaft one 42294. The rotating shaft one 42294 is rotatably connected with a fixed plate one 42295. The fixed plate one 42295 is fixedly connected with the outer wall of the fodder sowing shell 41. A fixed plate two 42296 is fixedly connected below the fixed plate one 42295. A bevel gear two 422910 is fixedly connected below the rotating shaft one 42294. The bevel gear two 422910 is engaged with a bevel gear one 42299. The bevel gear one 42299 is fixedly connected with a rotating shaft two 42298. The rotating shaft two 42298 is rotatably connected with the fixed plate two 42296. Further, the rotating shaft two 42298 is fixedly connected with a rotating block 422911 at one end away from the fixed plate two 42296. The rotating block 422911 is fixedly connected with a cylinder 422921. The cylinder 422921 is slidingly connected with a connecting rod 422912. The connecting rod 422912 is fixedly connected with a fan-shaped block 422915. The fan-shaped block 422915 is rotatably connected with a fixed plate three 422916. The fixed plate three 422916 is fixedly connected below the fixed plate one 42295. A plurality of tooth blocks are fixedly connected below the fan-shaped block 422915. The plurality of tooth blocks are engaged with a gear 422913. The gear 422913 is fixedly connected with a rotating rod 422914. The rotating rod 422914 penetrates through the inner wall of the fodder sowing shell 41. The outer wall of the rotating rod 422914 is fixedly connected with the knocking assembly 425 such as a knocking hammer 4250 at one end away from the gear 422913.

[0089] The filter plate 424 is provided with mesh holes. The conveying area 427 comprises a material tilting channel 4271 connected outside the crushing barrel 413 and a blowing and expanding port 4272 connected with the opening 44 of the fodder sowing shell. The material tilting channel 4271 and the blowing and expanding port 4272 are communicated. The blowing and expanding port 4272 is arranged in a downward and upward inclined manner. The blowing assembly 423 comprises a blower fixed below the bottom plate 42. The upper side of the fodder sowing shell 41 is provided with a cover to avoid moisture from entering the feeding assembly and affecting the dryness of the fodder.

[0090] The feeding assembly 421 comprises an upper large and lower small feeding hopper 4201, a movable feeding plate 4202 located at the lower side of the feeding hopper 4201, a feeding groove 4207 located at the lower side of the feeding plate 4202, a feeding limiting rod 4203 connected with the feeding plate 4202 and fixed inside the feed spreading shell 41, a feeding motor 4204 connected with the feeding plate 4202 and having one end fixed inside the feed spreading shell 41, a feeding movable rod 4205 connected between the feeding motor 4204 and the feeding plate 4202, the feeding plate 4202 being provided with an avoiding groove 4206 for limiting the feeding limiting rod 4203 forward and backward, and the feeding motor 4204 being a lead screw motor.

[0091] The oxygen increasing pump assembly 3 is provided with two and is diagonally arranged on the side away from the liquid oxygen supply assembly 2, which can reduce the influence on the biological floc around the liquid oxygen supply assembly 2 when it is opened, and comprises a support 31 fixed at one end of the pond, a booster pump located on the support 31, a plurality of buoyancy assemblies 32 symmetrically arranged outside the support 31, and an anti-rollover assembly 33 connected between the support 31 and the buoyancy assembly 32, the anti-rollover assembly 33 comprising a sliding assembly 331 for the buoyancy assembly 32 to move up and down, and a hinged assembly 332 connected between the sliding assembly 331 and the buoyancy assembly 32, when the buoyancy assembly 32 moves along the sliding assembly 331 upward, the hinged assembly 332 drives the buoyancy assembly 32 to move closer to the center of the support 31.

[0092] The support 31 comprises an upper panel 311 fixed at one end of the pond, a fixed platform 334 connected with the hinged assembly 332 and used for placing the booster pump, the bottom surface of the upper panel 311 is fixedly connected with a support rod 312, and the surface of the support rod 312 is provided with a sliding groove 3121; a sliding sleeve 313 is arranged between the inner wall of the sliding groove 3121 and the surface of the support rod 312; the hinged assembly 332 comprises a long arc rod 3321 and a short arc rod 3322, one end of the surface of the sliding sleeve 313 and the long arc rod 3321 are hingedly connected through a coil spring, the other end of the long arc rod 3321 and one end of the short arc rod 3322 are hingedly connected, and the other end of the short arc rod 3322 and the surface of the fixed platform 334 are hingedly connected; the surface of the long arc rod 3321 is fixedly connected with a fixed ring 33211, and the buoyancy assembly 32 is a buoy fixedly connected inside the fixed ring 33211.

[0093] Additionally, the fixed platform 334 includes a platform shell 334201, a rotating rod 334203, and a platform fixing plate 334205. A limit block 334202 is fixedly connected to the upper surface of the platform shell 334201. The interior of the platform shell 334201 is rotatably connected to the upper surface of the rotating rod 334203. One end of a spring 334204 is fixedly connected to the surface of the platform fixing plate 334205, and the surface of the platform fixing plate 334205 is fixedly connected to the interior of the platform shell 334201. A fixing buckle 334206 and a toggle lever 334207 are fixedly connected to the upper surface of the rotating rod 334203.

[0094] Example 2: As Figure 2 As shown, the difference between Embodiment 2 and Embodiment 1 is that the base 42 is further connected to a first float 4200, a second float 4208, and a drive assembly, which supports the entire feed spreading shell 41 and drives the feed spreading device to move on the water surface. The drive assembly includes a drive motor and a stirring paddle 420. The blowing assembly 423 includes four blowers located at the four corners of the conveying area 427. The conveying ramp 426 is pyramidal in shape and includes four ramps corresponding one-to-one with the conveying area 427. The feed spreading shell opening 44 is also provided with four openings, so that feed can be spread simultaneously from all four sides of the feed spreading shell 41, improving the spreading efficiency.

[0095] The feed-spreading device also includes a control unit and a photovoltaic cell assembly connected to the control unit. The feed-spreading device can be charged by the photovoltaic cell assembly under sunlight, improving its ease of use. Additionally, the control unit includes a remote control component, allowing users to connect via wireless network, Bluetooth, infrared, etc., and remotely control the movement of the feed-spreading device using tools such as computers, mobile phones, or remote controls. Furthermore, the control unit can adjust the feed size according to the preset growth cycle of the Pacific white shrimp. Specifically, when the Pacific white shrimp are in the larval stage, the control unit increases the rotation speed of the cutting component 422, further reducing the feed size. When the Pacific white shrimp are in the adult stage, the control unit slows down or even stops the rotation of the cutting component 422, ensuring the feed size is suitable for the Pacific white shrimp's consumption and preventing excessively fine feed from dissolving directly in the pond, causing environmental pollution and waste.

[0096] Example 3: Based on Example 1, Example 3 further includes the following implementation method: a method for cultivating high-efficiency whiteleg shrimp in a farming system, comprising the following steps:

[0097] S1. A liquid oxygen input device 5 is installed on one side of the pond. The flow rate of liquid oxygen to be transported in a single operation is preset, and the start time of the oxygenation pump assembly 3 is preset. The liquid oxygen input device 5, the oxygenation pump assembly 3, and the liquid oxygen output device 6 are started simultaneously for 1 hour.

[0098] After the S2, liquid oxygen input device 5, oxygenation pump assembly 3, and liquid oxygen output device 6 have completed their preset operation time, the feed spreading device 4 divides the feed and spreads it into the pond at a preset speed. The feed spreading device 4 adopts a continuous feeding method for 12 hours from 7:00 am to 7:00 pm, and starts spreading for 2 minutes every 10 minutes.

[0099] S3, the liquid oxygen input device 5, the aeration pump assembly 3, and the liquid oxygen output device 6 in steps S1 and S2 are operated at least 5 times a day. The liquid oxygen input device, by controlling the amount of liquid oxygen input in conjunction with the liquid oxygen output device, adds 0.1 grams of oxygen to each cubic meter of water in the pond every day.

[0100] Before step S1, there is step S100: During the first aquaculture, seawater is added to the aquaculture pond, and the salinity is adjusted to about 0.5% to 2.5% with fresh water. The water temperature is controlled at 20-30℃, and then 20-30g / m³ of bleaching powder is added. 3 Disinfect the water with 100 kg / mu of quicklime. After aeration for 1-2 days until there is no residual chlorine in the water, add EM bacteria and amino acid fertilizer paste seven days before stocking. Utilize the colony-forming organisms to occupy space. Every morning, apply Nitrosomonas, Denitrifying Pseudomonas, Bacillus subtilis, photosynthetic bacteria, and Lactobacillus acidophilus to the entire pond, with an addition amount of approximately 7.5 × 10⁻⁶ for Nitrosomonas. 6 cfu·L -1 Denitrifying Pseudomonas aeruginosa 6.0 × 10 6 cfu·L -1、 Bacillus subtilis 7.0 × 10 6 cfu·L -1 Rhodospirillumaceae 3.0×10 8 cfu·L -1 Lactobacillus acidophilus 1.0 × 10 6 cfu·L -1 Simultaneously, add 1 kg of brown sugar per mu (approximately 0.067 hectares) and sprinkle it throughout the pond. After continuous application for 5-7 days, flocculent particles will appear in the water, and bioflocs will begin to form. The stocking density of shrimp larvae should be 100-200 shrimp / m². 3 The introduction of microalgae brought the algae concentration in the water to 5 × 10⁻⁶. 4 CFU / mL. The microalgae used are Chlorella vulgaris, Scenedesmus stenoptera, Arachnium platensis, and Arachnium macrocarpa. Continuous aeration for 15 days was performed to achieve a biofloc concentration of over 5 ml / L (sedimentation volume in half an hour) and maintain stability.

[0101] In step S3, the following step S301 is also included: before adding the carbon source each time, it is soaked for 10 minutes per liter of lactic acid bacteria solution with a concentration of 9.5 x 10 6 cfu·L -1 The intestinal absorption effect of the fry is improved. Within 30 days after the fry is released, 50% of the feed feeding amount is supplemented with organic carbon substances every day, and the following bacteria are introduced: Nitrosomonas, Pseudomonas denitrificans, Bacillus subtilis, Rhodospirillaceae, and Lactobacillus acidophilus, which are added every 5 days in an amount of about 7.5 x 10 6 cfu·L -1 , 6.0 x 10 6 cfu·L -1、 , 7.0 x 10 6 cfu·L -1 , 3.0 x 10 8 cfu·L -1 , and 1.0 x 10 6 cfu·L -1 , respectively. In the middle and later stages of cultivation, 30% of the feed amount is supplemented with organic carbon substances.

[0102] During cultivation, potassium persulfate is used every 10-20 days to improve the substrate, and sodium carbonate solution and lime water are added to adjust the water pH value to 7.1-8.1 and the total alkalinity to 150-300 mg / L. In the middle and later stages of cultivation, the biological flocculation concentration in the water is stabilized at 15-30 mL / L. No water is changed throughout the cultivation process, and only a small amount of freshwater is added to make up for the water loss due to evaporation.

[0103] In the later stages of cultivation, Bacillus subtilis solution 500 g / acre and Lactobacillus acidophilus solution 800 g / acre are sprayed every day, and EM bacteria solution 10 kg / acre is sprayed every 3-5 days to improve the stability of algae. The oxygenation machine is turned on within 1 hour after spraying. The C / N ratio is controlled between 15 and 20. The mixing ratio of bamboo powder, peanut shell powder, brown sugar, and cassava powder is as follows: bamboo powder accounts for 10 parts, peanut shell powder accounts for 20 parts, brown sugar accounts for 30 parts, and cassava powder accounts for 40 parts.

[0104] The preparation method of the enzymatic cassava powder is as follows: the cassava powder is sieved, the sieving mesh number is 50, the cassava powder is weighed, added into water, the mass ratio of the material to the liquid is 1:3, and fully stirred until a cassava powder aqueous solution is obtained. 10 U / g of alpha-amylase is added to the cassava powder solution according to the mass of the cassava powder. The mixture is incubated at 50-60°C, the pH is maintained at 6.0-7.0, the alpha-amylase is allowed to act on the cassava powder, and the starch molecules are decomposed. After 2 hours of action of the alpha-amylase, when the increase in the viscosity of the solution is observed, glucoamylase is added, 200 U / g of glucoamylase is added according to the mass of the cassava powder, the temperature is continuously maintained at 60°C, and the pH is maintained at about 5.0-6.0, so that the glucoamylase converts the remaining amylose into glucose. After 1 hour of the saccharification process, 0.01%-0.05% of protease is added according to the mass of the cassava powder, the enzymolysis is carried out in a constant-temperature water bath at 45°C for 120 minutes, the pH is about 5.0-7.0, so that the protein components in the solution are degraded, and the enzymatic cassava powder is obtained.

[0105] The preparation method of the enzymatic bamboo powder and peanut shell powder is as follows: the peanut shell powder is sieved, the sieving mesh number is 200, the bamboo powder is sieved, the sieving mesh number is 300, the peanut shell powder and the bamboo powder are weighed, soaked in 0.1 mol / L dilute sulfuric acid solution for 10 min for pretreatment, so as to remove part of the lignin, soften the fiber structure, and improve the enzymolysis efficiency, added into water, the mass ratio of the material to the liquid is 1:10, and fully stirred until a mixture aqueous solution is obtained. 5 U / g of xylanase is added to the mixture solution according to the mass of the mixture. The mixture is incubated at 40-50°C, the pH is maintained at 4.5-5.5, the xylanase is allowed to act on the hemicellulose in the bamboo powder and the peanut shell. After 1 hour of action of the xylanase, beta-glucosidase is added, 20 U / g of beta-glucosidase is added according to the mass of the mixture, the temperature is continuously maintained at 45-60°C, and the pH is maintained at about 5.0-6.0, so that the beta-glucosidase decomposes the produced oligosaccharide. After 30 min of the action process of the beta-glucosidase, 0.01%-0.05% of manganese peroxidase is added according to the mass of the mixture, the enzymolysis is carried out in a constant-temperature water bath at 50°C for 60 minutes, the pH is about 5.0-6.0, and the enzymatic bamboo powder and peanut shell powder are obtained.

[0106] Comparative Example 1: The difference between Comparative Example 1 and Example 3 is that the feeding management of Comparative Example 1 is as follows:

[0107] The feeding is carried out 3 times a day at a fixed time period in the early stage of cultivation; a mixture of photosynthetic bacteria, yeast, fermented flour and rice bran is added to the cultivation pond at 5 kg per mu every 3 days to replace the original organic carbon sources of bamboo powder, peanut shell powder, brown sugar, cassava powder, nitrosomonas, pseudomonas denitrificans, bacillus subtilis, Rhodospirillaceae and lactobacillus acidophilus, the preparation method of the mixture is that 50 kg of carbon source is added to 1000 liters of water body, then 5 liters of mixed solution of photosynthetic bacteria and yeast colonies is added, the concentration is 1 billion per milliliter, and the mixture can be used after being sealed and fermented at a temperature above 22 degrees Celsius for 24 hours, the carbon source is fermented flour and rice bran, potassium bisulfate and quicklime are added to the cultivation pond every 10 days to adjust the pH value, 0.1 kg of conventional feed is fed to one million fry for 3 meals a day in the first 5 days, then the feeding amount is increased every two days, specifically, 0.5 kg is added per meal, and the feeding amount is increased until the 20th day, then the amount of feed is increased or decreased according to the amount of feed, and the water body is stabilized after one month of cultivation; the feeding is carried out 5 times a day at a fixed time period during the stable water period; in the process of feeding and management, the bottom mud is stirred every other day, and a mixture of photosynthetic bacteria, yeast, fermented flour and rice bran is added to the cultivation pond at 3 kg per mu every day, and potassium bisulfate and quicklime are added to the cultivation pond every 5 days to adjust the pH value.

[0108] Comparative Example 2: Comparative Example 2 differs from Example 3 in that the mixture of ordinary bamboo powder, peanut shell powder, brown sugar and cassava powder is used in Comparative Example 2, and the mixture is composed of 10 parts of bamboo powder, 20 parts of peanut shell powder, 30 parts of brown sugar and 40 parts of cassava powder.

[0109] Comparative Example 3: Comparative Example 3 differs from Example 3 in that photosynthetic bacteria and yeast are used instead of nitrosomonas, pseudomonas denitrificans, bacillus subtilis, Rhodospirillaceae and lactobacillus acidophilus in Comparative Example 3.

[0110] Comparative Example 4: Comparative Example 4 differs from Example 3 in that Comparative Example 4 does not use a liquid oxygen supply assembly.

[0111] Table 1: Cultivation test effect of Penaeus vannamei in the present application

[0112]

[0113] As can be seen from Table 1, compared with Example 1, the use frequency of strains and organic carbon sources is reduced in Comparative Example 1, the replacement of strains reduces the photosynthesis of algae, the reduction of lactobacillus acidophilus and bacillus subtilis increases the number of vibrio and affects the survival rate of Penaeus vannamei, the replacement of organic carbon sources reduces the formation of biological floc and affects the absorption and digestion of Penaeus vannamei, and the fixed time period feeding causes the excess organic matter and feed in the water to precipitate and leads to the imbalance of carbon-nitrogen ratio.

[0114] Compared with Example 1, in Comparative Example 2, the treated organic carbon source in Example 1 is more easily taken in by microorganisms or indirectly by Penaeus vannamei, the residual excessive organic matter in water is reduced in Example 1, the carbon-nitrogen ratio can maintain a stable state, the survival rate of Penaeus vannamei in Example 1 is higher, compared with Comparative Example 2 and Comparative Example 1, Comparative Example 2 is fed in small amounts and at intervals, which can reduce the excessive precipitation of organic matter as much as possible, but the unmodified organic carbon source cannot be effectively absorbed and utilized by microorganisms to form flocs, which will affect the feeding and absorption of Penaeus vannamei to some extent, and the number of Vibrio can be reduced by the multiple strains in Comparative Example 2, which can relatively improve the survival rate of Penaeus vannamei.

[0115] Compared with Example 1, the strains in Example 1 can reduce the ammonia nitrogen content in water, thereby helping to improve water quality, the number of Vibrio is reduced and the survival rate of Penaeus vannamei is improved in Example 1 by Lactobacillus acidophilus, Bacillus subtilis and the like, compared with Comparative Example 3 and Comparative Example 1, Comparative Example 3 is fed in small amounts and at intervals, and the treated organic carbon source is more easily taken in by microorganisms or Penaeus vannamei, the residual excessive organic matter in water is reduced in Comparative Example 3, which can relatively improve the survival rate and size of Penaeus vannamei.

[0116] It can be known from Comparative Example 4 and Example 1 that, in Comparative Example 4, the amount of oxygen in water is reduced due to the reduction of the liquid oxygen supply assembly, and in Example 1, the intakeable oxygen concentration of Penaeus vannamei near the liquid oxygen output device is high, and the feeding desire is higher, so the size of Penaeus vannamei will be relatively higher, and the liquid oxygen output device can supplement the consumption of oxygen by microorganisms in water, thereby ensuring the survival rate of Penaeus vannamei.

Claims

1. A high efficiency farming system of Penaeus vannamei, comprising a pond, characterized in that: The pond comprises a liquid oxygen supply assembly, an oxygenation pump assembly and a feed scattering device, the liquid oxygen supply assembly comprises a liquid oxygen input device arranged at one side of the pond, a liquid oxygen output device arranged at the liquid surface of the pond, a transmission pipeline connected between the liquid oxygen input device and the liquid oxygen output device, the oxygenation pump assembly is arranged at the liquid surface of the pond and cooperates with the liquid oxygen output device to supply oxygen, and the feed scattering device is used to feed the liquid surface of the pond after the oxygen supply is completed; The liquid oxygen output device comprises a floating plate floating on the water surface, a liquid oxygen output shell connected to the floating plate and partially immersed in the water, a delivery pump arranged on the liquid oxygen output shell and connected with the transmission pipeline, and an aeration member connected with the delivery pump; The liquid oxygen output shell comprises a filter assembly connected to the outer side of the aeration member and a rotating assembly rotatable relative to the filter assembly, the rotating assembly is provided with a support frame, a motor arranged on the support frame, a rotating shaft connected with the motor, and a blade connected with the rotating shaft, and the filter assembly is provided with a through hole immersed in the water; The filter assembly is provided with an anti-blocking assembly, the anti-blocking assembly comprises a cleaning rod through which the rotating shaft passes and connected with the rotating shaft, the cleaning rod is provided with a cleaning rod groove, a cleaning block slidingly connected in the cleaning rod groove, and an elastic reset member arranged between the inner wall of the cleaning rod groove and the cleaning block, and the cleaning block can extend into the through hole; The feed scattering device comprises a feed scattering shell and a base connected with the bottom of the feed scattering shell, the uppermost layer of the base is provided with a feeding assembly, a cutting assembly arranged below the feeding assembly, and a blowing assembly connected with the cutting assembly, the outer side of the feed scattering shell is provided with a feed scattering shell opening, and the blowing assembly is used to blow the feed cut by the cutting assembly to the outside of the feed scattering shell opening; A filter plate is arranged between the cutting assembly and the blowing assembly, the lower side of the filter plate is connected with a knocking assembly rotatable and in contact with the filter plate, the lower side of the filter plate is provided with a conveying slope, the bottom of the conveying slope is provided with a conveying area, and the conveying area is located between the blowing assembly and the feed scattering shell opening; The fodder sowing shell is provided with a crushing barrel and a fixed plate, the cutting assembly is located in the crushing barrel, a first motor is fixedly connected below the fixed plate, the cutting assembly is located below the first motor, the cutting assembly comprises a rotating wheel one, the rotating wheel one is fixedly connected with the output shaft of the first motor, a round rod is fixedly connected below the rotating wheel one, a crushing rod is fixedly connected around the outer wall of the round rod, the rotating wheel one is drivingly connected with a conveyor belt one, one end of the conveyor belt one away from the rotating wheel one is drivingly connected with a rotating wheel two, the rotating wheel two is fixedly connected with a rotating shaft one, the rotating shaft one is rotatably connected with a fixed plate one, the fixed plate one is fixedly connected with the outer wall of the fodder sowing shell, a fixed plate two is fixedly connected below the fixed plate one, a bevel gear two is fixedly connected below the rotating shaft one, the bevel gear two is engaged with a bevel gear one, the bevel gear one is fixedly connected with a rotating shaft two, the rotating shaft two is rotatably connected with the fixed plate two, a rotating block is fixedly connected to one end of the rotating shaft two away from the fixed plate two, a cylinder is fixedly connected with the rotating block, a connecting rod is slidingly connected with the cylinder, a fan-shaped block is fixedly connected with the connecting rod, the fan-shaped block is rotatably connected with a fixed plate three, the fixed plate three is fixedly connected below the fixed plate one, a plurality of tooth blocks are fixedly connected below the fan-shaped block, the plurality of tooth blocks are engaged with a gear, the gear is fixedly connected with a rotating rod, the rotating rod penetrates through the inner wall of the fodder sowing shell, a knocking assembly is fixedly connected to the outer wall of one end of the rotating rod away from the gear, and the knocking assembly is a knocking hammer.

2. The high efficiency Penaeus vannamei breeding system according to claim 1, characterized in that: The liquid oxygen input device comprises a gasification part connected with a liquid oxygen bottle, a flow meter and a pressure regulating device.

3. The high efficiency white shrimp (Litopenaeus vannamei) farming system according to claim 1, characterized in that: The liquid oxygen output shell is provided with two groups, and a buffer distance is provided between the aerator and the liquid surface.

4. The high efficiency white shrimp (Litopenaeus vannamei) farming system according to claim 1, characterized in that: The oxygen increasing pump assembly comprises a supporting part fixed at one end of the pond, a booster pump located on the supporting part, a plurality of buoyancy assemblies symmetrically arranged outside the supporting part, and an anti-rollover assembly connected between the supporting part and the buoyancy assemblies, the anti-rollover assembly comprises a sliding assembly for the buoyancy assemblies to move up and down, and a hinged assembly connected between the sliding assembly and the buoyancy assemblies, when the buoyancy assemblies move upwards along the sliding assembly, the hinged assembly drives the buoyancy assemblies to move towards the center of the supporting part.

5. The high efficiency Penaeus vannamei breeding system according to claim 4, characterized in that: The supporting part comprises an upper panel fixed at one end of the pond and a fixed platform connected with the hinged assembly and used for placing the booster pump, the bottom surface of the upper panel is fixedly connected with a support rod, and a sliding groove is formed in the surface of the support rod; a sliding sleeve is arranged between the inner wall of the sliding groove and the surface of the support rod; the hinged assembly comprises a long arc rod and a short arc rod, the surface of the sliding sleeve is hinged to one end of the long arc rod through a coil spring, the other end of the long arc rod is hinged to one end of the short arc rod, and the other end of the short arc rod is hinged to the surface of the fixed platform; a fixed ring is fixedly connected to the surface of the long arc rod, and the buoyancy assembly is a buoyancy tube fixedly connected inside the fixed ring.

6. A method for breeding of Penaeus vannamei in a high-efficiency breeding system, comprising the high-efficiency breeding system of any one of claims 1-5, characterized in that, The method comprises the following steps: S1, a liquid oxygen input device is installed on one side of the pond, the flow of liquid oxygen required for a single time is preset, the starting time of the oxygen increasing pump assembly is preset, and the liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device are started simultaneously; S2, after the liquid oxygen input device, the oxygen increasing pump assembly and the liquid oxygen output device run for a preset time, the feed scattering device divides and scatters the feed to the pond at a preset rotating speed; S3, the steps S1 and S2 are repeated at least 3-5 times a day.

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