Strawberry seedling raising system

Abstract

The invention discloses a strawberry seedling raising system, and aims to solve many problems existing in a traditional strawberry seedling raising mode and improve seedling raising quality and efficiency. A plurality of groups of seedling raising pipe mechanisms are arranged at the front part of the seedling raising frame, seedling raising pipes are inclined and are internally provided with wave lines and pits, the lower ends of the seedling raising pipes are provided with ultrasonic transducers, an ultrasonic aerator is arranged below a liquid inlet in the left side, and a liquid outlet is formed in the lower end of the right side; a porous ceramic cup base at the bottom of the seedling culture cup comprises a capillary structure and a liquid storage cavity; the circulating mechanism is composed of a nutrient solution mixing box, a circulating pump, a main pipeline, a flow dividing pipeline and a pressure regulating valve, and nutrient solutions can be blended and accurately supplied. Through the design, efficient oxygenation, uniform mixing and accurate supply of a nutrient solution are achieved, a stable and excellent environment is created for strawberry seedling root systems, healthy growth of the root systems is promoted, the survival rate and quality of strawberry seedlings are improved, meanwhile, a good nutrient solution recycling function is achieved, the cost is reduced, and wide market application prospects are achieved.

Description

Technical Field

[0001] The invention relates to the field of agriculture, and in particular to a strawberry seedling raising system. Background Art

[0002] As a fruit deeply loved by consumers, strawberry has rich nutritional value and economic value. Globally, the planting area and yield of strawberries are increasing, and the market has also put forward higher requirements for the quality and yield of strawberries. The traditional soil cultivation method is limited to a certain extent by factors such as land resources and pest and disease control, while hydroponic technology, as a new type of soilless cultivation method, has gradually attracted widespread attention. Hydroponic strawberries have the advantages of short growth cycle, high yield, good quality, and precise control. They can achieve high-density planting in a limited space, providing a new way for the development of the strawberry industry. In traditional soil cultivation of strawberry seedlings, soil quality has a huge impact on the growth of strawberry seedlings. The soil is easily invaded by pests and diseases, such as soil-borne diseases such as root rot and anthracnose. Once these diseases occur, they are often difficult to control, which will cause a large number of strawberry seedlings to die, seriously affecting the success rate and yield of seedling cultivation. Soil fertility management is also relatively complicated, and regular fertilization and soil improvement are required to ensure the nutrients required for the growth of strawberry seedlings. In addition, the soil properties in different regions vary greatly, making it difficult to achieve standardized seedling management, resulting in uneven quality of strawberry seedlings.

[0003] In view of these problems, the prior art has proposed some improvement plans, but there are still certain limitations. For example, the patent with publication number CN216363010U discloses a kind of intelligent seedling liquid supply equipment for landscaping, but it still has the following shortcomings: 1. When the nutrient solution is left still for a long time or does not flow smoothly, solute precipitation is prone to occur, resulting in uneven components in the nutrient solution, and it is easy to have a local nutrient concentration that is too high or too low, affecting the growth uniformity of the strawberry seedlings. 2. The traditional oxygenation method has limited effect. The insufficient oxygen content in the nutrient solution will cause the strawberry seedlings to have hypoxia in the roots, affecting their respiration and absorption of nutrients, thereby reducing the growth rate and stress resistance of the strawberry seedlings. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention aims to provide a strawberry seedling raising system, which solves the problems existing in the prior art. In the oxygenation link of the nutrient solution, an ultrasonic oxygenator is arranged at the lower end of the liquid inlet of the seedling raising tube mechanism, and combined with the unique wave pattern and pit design inside the seedling raising tube, the oxygen content in the nutrient solution is greatly improved, the oxygen deficiency problem of the strawberry seedling root system is effectively solved, and favorable conditions are created for the aerobic respiration and healthy growth of the root system.

[0005] Secondly, by equipping the lower end of the seedling tube with an ultrasonic transducer, the nutrient solution is further mixed and processed, ensuring the uniformity of the nutrient solution composition, allowing the strawberry seedlings to evenly absorb nutrients and avoiding uneven growth caused by uneven nutrient distribution. Furthermore, the bottom of the seedling cup uses a porous ceramic cup base, whose internal capillary structure can accurately absorb and conduct the nutrient solution. Together with the liquid storage cavity on the upper part of the cup base, it provides a stable and suitable nutrient supply environment for the strawberry seedling roots, solving the problem of unstable nutrient solution supply in traditional seedling cultivation.

[0006] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a strawberry seedling raising system, comprising a seedling raising rack, a plurality of seedling raising tube mechanisms are fixed to the front of the seedling raising rack, the upper end array of the seedling raising tube mechanisms is plugged with seedling raising cups, and a circulation mechanism is arranged at the bottom of the seedling raising rack. The seedling raising rack is used to provide support and stability for the entire seedling raising system. The seedling raising tube mechanism is responsible for transporting water and nutrient solution to provide the required growth conditions for the strawberry seedlings. The seedling raising cup is used to hold seeds or seedlings and provide a growth medium for the plants. The circulation mechanism is responsible for transporting the nutrient solution from the nutrient solution mixing box to the seedling raising tube mechanism and recovering the unabsorbed liquid.

[0007] Preferably, the seedling tube mechanism includes a seedling tube, a liquid inlet is provided on the left side of the seedling tube, a liquid outlet is provided on the lower right end of the seedling tube, and an ultrasonic aerator is provided at the lower end of the liquid inlet; the seedling tube is the main channel for nutrient and water transportation. The liquid inlet is the entrance for liquid to enter the seedling tube, and is connected to the nutrient solution source in the circulation system. The liquid outlet is responsible for discharging the liquid absorbed by the plant root system. It can return the unused nutrient solution to the circulation system to maintain the recycling of nutrients and the high efficiency of the system. The ultrasonic aerator is used to generate high-frequency ultrasonic waves. Through the vibration of ultrasonic waves, the solubility of nutrients in water is increased to ensure that plants can absorb them more effectively. Ultrasonic waves of appropriate frequency can stimulate plant cells and promote the healthy growth of the root system.

[0008] Preferably, a cup seat is provided at the bottom of the seedling raising cup, a liquid storage cavity is provided at the upper part of the cup seat, the cup seat is made of porous ceramic, and capillary structures are evenly distributed inside the cup seat and extend through to the liquid storage cavity.

[0009] Preferably, the seedling tube mechanism is tilted to the seedling rack, and the tilt angle is 70°. The design of this angle enables the strawberry seedlings placed in the seedling cup to obtain more favorable lighting conditions.

[0010] Preferably, the seedling raising tube is a hollow tube structure, the interior of the seedling raising tube is provided with wavy patterns, and the inner bottom of the seedling raising tube is provided with evenly distributed pits.

[0011] Preferably, the outer edge of the seedling raising cup is provided with uniform drain grooves, and the bottom of the seedling raising cup is provided with dividing grooves.

[0012] Preferably, inclined cup grooves are evenly arranged on the upper end of the seedling raising tube.

[0013] Preferably, the circulation mechanism comprises a nutrient solution mixing box, a circulation pump is connected to the right side of the nutrient solution mixing box, the liquid outlet of the circulation pump is connected to the main pipeline, and the liquid outlet of the main pipeline is connected to a shunt pipeline. The nutrient solution mixing box is used to mix different types of fertilizers and additives in appropriate proportions to ensure that nutrients are fully dissolved and evenly distributed to meet the needs of plant growth. The main function of the circulation pump is to transport the mixed nutrient solution from the nutrient solution mixing box to the main pipeline to ensure that nutrients are supplied to the seedling tube mechanism in time. The main pipeline is the main channel connecting the circulation pump and the shunt pipeline. The shunt pipeline shunts the nutrient solution in the main pipeline to multiple liquid inlets to ensure that each seedling tube evenly obtains the nutrient solution.

[0014] Preferably, a pressure regulating valve is provided at the connection between the shunt pipe and the liquid inlet. The setting of the pressure regulating valve can effectively control the pressure of the liquid flowing into the liquid inlet, avoiding system damage or uneven liquid flow due to excessive pressure. By adjusting the opening of the valve, the user can accurately control the flow rate of the nutrient solution entering the seedling tube to meet the needs of different plant growth stages.

[0015] Preferably, the liquid storage cavity is located at the center of the bottom of the seedling cup, and the liquid storage cavity is a shallow dish-shaped structure with a depression in the middle.

[0016] Furthermore, the shape of the micro-pits can be circular, square or hexagonal, etc., with a diameter or side length of about 1-3 mm. The depth of the pits is between 0.5-1.5 mm. The distribution density of the pits can be adjusted according to the size of the pipeline and the power of the ultrasonic transducer, and generally 3-5 pits can be distributed per square centimeter.

[0017] Furthermore, the micro-pit patterns can be manufactured by laser etching, chemical corrosion or die stamping. During the manufacturing process, it is necessary to ensure that the shape of the pits is regular and the depth is uniform to ensure their positive effects on the flow of nutrient solution and the efficiency of ultrasound.

[0018] Furthermore, the wave pattern can be replaced by a spiral design to increase the turbulence effect of the fluid in the seedling tube and improve the transmission efficiency of nutrients and oxygen.

[0019] (III) Beneficial effects The present invention aims to provide a strawberry seedling system. In terms of strawberry seedling growth, the synergistic effect of the ultrasonic aerator and the seedling tube structure, as well as the special design of the bottom of the seedling cup, greatly improves the growth environment of the root system. Adequate oxygen supply promotes the respiration of the root system, making it more developed and strong, and enhancing the ability to absorb nutrients, thereby improving the survival rate and growth rate of the strawberry seedlings. The cultivated strawberry seedlings are more robust and neat, laying a solid foundation for subsequent high yield and high quality. From the perspective of nutrient supply, the ultrasonic transducer ensures the uniform mixing of the nutrient solution, and the capillary structure and liquid storage cavity of the porous ceramic cup seat realize the stable and accurate supply of the nutrient solution, avoiding the problems of uneven nutrient distribution and unstable supply, so that the strawberry seedlings can obtain various nutrients in a balanced manner, which is conducive to the quality improvement of the fruit, such as increasing the sweetness, color and size uniformity of the fruit. In terms of resource utilization and cost control, the optimized design of the circulation mechanism and the reasonable structure of the seedling cup realize the efficient recycling of the nutrient solution, reduce the waste of the nutrient solution, and reduce the production cost. At the same time, precise pressure and flow control reduces human intervention, improves the convenience and automation of seedling management, further reduces labor costs and management costs, and enhances the economic benefits and sustainable development capabilities of strawberry cultivation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of a strawberry seedling raising system of the present invention; Figure 2 It is a schematic diagram of a seedling raising tube mechanism in a strawberry seedling raising system of the present invention; Figure 3 A schematic diagram of a circulation mechanism in a strawberry seedling raising system of the present invention; Figure 4 A cross-sectional view of a seedling raising cup in a strawberry seedling raising system of the present invention; Figure 5 It is a side sectional view of a single set of seedling raising tube mechanisms in a strawberry seedling raising system of the present invention; Figure 6 It is a cross-sectional view of a single set of seedling raising tube mechanisms in a strawberry seedling raising system of the present invention; Figure 7 for Figure 6 An enlarged view of point A in the cross-sectional view of a single group of seedling raising tube mechanisms in a strawberry seedling raising system of the present invention; In the figure: 1-seedling rack, 2-seedling tube mechanism, 3-seedling cup, 4-circulation mechanism, 21-seedling tube, 22-liquid inlet, 23-liquid outlet, 24-ultrasonic oxygenator, 25-ultrasonic transducer, 31-cup holder, 32-liquid storage chamber, 33-leakage groove, 34-dividing groove, 41-nutrient solution mixing box, 42 circulation pump, 43-main pipeline, 44-dividing pipeline, 45-pressure regulating valve, 211-wave pattern, 212-pit, 213-cup groove. DETAILED DESCRIPTION

[0021] The following will be combined with the attached examples of the present invention Figure 1-Figure 7 A clear and complete description is given to the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] The present invention provides a technical solution: a strawberry seedling raising system, such as Figure 1 As shown, it includes a seedling rack 1, a plurality of seedling tube mechanisms 2 are fixed to the front of the seedling rack 1, a seedling cup 3 is inserted in the upper array of the seedling tube mechanism 2, and a circulation mechanism 4 is arranged at the bottom of the seedling rack 1. The seedling rack 1 is used to provide support and stability for the entire seedling system, ensuring the reasonable layout and effective operation of each component. The seedling rack design can optimize space utilization, making the seedling process more efficient, convenient for management and maintenance. The seedling tube mechanism 2 is responsible for transporting water and nutrient solution to provide the required growth conditions for the strawberry seedlings. The design of the multi-tube mechanism allows multiple seedling processes to be carried out simultaneously, which improves the yield and efficiency of the system. The regulating function of the flow pattern in the tube can be flexibly adjusted according to different growth stages to meet the specific needs of the plant. The seedling cup 3 is used to hold seeds or seedlings and provide a growth medium (hydroponic matrix) for the plant. The design of the cup ensures good water and nutrient retention while allowing the root system to grow freely. Its structure can also optimize the air circulation of the root system and promote healthy growth. The circulation mechanism 4 is responsible for transporting the nutrient solution from the nutrient solution mixing box to the seedling tube mechanism and recovering the unabsorbed liquid. It ensures the continuous recycling of nutrients, reduces waste and keeps the concentration of nutrient solution stable. The efficiency of the circulation system directly affects the growth rate and health of the plants.

[0023] The seedling tube mechanism 2 is tilted to the seedling rack 1, and the tilt angle is 70°. The design of this angle enables the strawberry seedlings placed in the seedling cup 3 to obtain more favorable lighting conditions. The strawberry seedlings need sufficient light to photosynthesize during the growth process to synthesize organic matter and promote their own growth and development. When the seedling tube mechanism 2 is tilted, the leaves of the strawberry seedlings can face the light source (such as natural sunlight or artificial lighting equipment) at a relatively more suitable angle, so that the leaves can receive and utilize light to the greatest extent, improve the efficiency of photosynthesis, and thus provide more sufficient energy and material basis for the thriving growth of the strawberry seedlings.

[0024] like Figure 2As shown, the seedling tube mechanism 2 includes a seedling tube 21, a liquid inlet 22 is provided on the left side of the seedling tube 21, a liquid outlet 23 is provided on the lower right end of the seedling tube 21, and an ultrasonic aerator 24 is provided at the lower end of the liquid inlet 22; the seedling tube 21 is the main channel for nutrient and water transportation. The liquid inlet 22 is the entrance for liquid to enter the seedling tube 21, and is connected to the nutrient solution source in the circulation system. By controlling the flow rate, the amount of liquid entering the seedling tube can be adjusted to ensure that the plants get the right amount of nutrition. The liquid outlet 23 is located at the lower right end of the seedling tube 21, and is responsible for discharging the liquid absorbed by the plant root system. It can return the unused nutrient solution to the circulation system to maintain the recycling of nutrients and the high efficiency of the system. The ultrasonic aerator 24 is arranged at the lower end of the liquid inlet 22 to generate high-frequency ultrasonic waves. Through the vibration of ultrasonic waves, the solubility of nutrients in water is increased to ensure that plants can absorb more effectively. Secondly, ultrasonic waves can cause the fluid to form microbubbles in the pipeline, improve fluidity, and promote the uniform distribution of liquid in the pipeline. 3. Promote root growth: Ultrasonic waves of appropriate frequency can stimulate plant cells and promote the healthy growth of roots.

[0025] like Figure 3 As shown, the circulation mechanism 4 includes a nutrient solution mixing box 41, a circulation pump 42 is connected to the right side of the nutrient solution mixing box 41, a main pipeline 43 is connected to the liquid outlet of the circulation pump 42, and a shunt pipeline 44 is connected to the liquid inlet 22. A pressure regulating valve 45 is provided at the connection between the shunt pipeline 44 and the liquid inlet 22. The nutrient solution mixing box 41 is used to mix different types of fertilizers and additives in appropriate proportions to ensure that nutrients are fully dissolved and evenly distributed to meet the needs of plant growth. The main function of the circulation pump 42 is to transport the mixed nutrient solution from the nutrient solution mixing box 41 to the main pipeline 43 to ensure that nutrients are supplied to the seedling tube mechanism 2 in time. By adjusting the working intensity of the pump, the flow rate of the liquid can be controlled to meet the needs of different plant growth stages. The main pipeline 43 is the main channel connecting the circulation pump and the shunt pipeline 44, which is responsible for transporting the nutrient solution to each seedling tube 21 to ensure efficient flow of the liquid. The shunt pipe 44 shunts the nutrient solution in the main pipe 43 to multiple liquid inlets 22 to ensure that each seedling tube 21 obtains the nutrient solution evenly. By setting multiple shunt ports, the liquid flow of each seedling tube can be flexibly adjusted according to the needs of different seedling cups. The setting of the pressure regulating valve 45 can effectively control the pressure of the liquid flowing into the liquid inlet 22 to avoid system damage or uneven liquid flow due to excessive pressure. By adjusting the opening of the valve, the user can accurately control the flow of the nutrient solution entering the seedling tube to meet the needs of different plant growth stages.

[0026] like Figure 5-Figure 7As shown, the seedling tube 21 is a hollow tube structure, and the inside of the seedling tube 21 is provided with a wave pattern 211, and the inner bottom of the seedling tube 21 is provided with evenly distributed pits 212. The hollow structure of the seedling tube 21 provides a flow channel for the liquid, allowing the nutrient solution to flow smoothly in the tube. Such a design can effectively support the growth of plant roots and ensure the timely supply of water and nutrients. The design of the wave pattern 211 can increase the turbulence of the liquid in the tube, promote the full mixing of nutrients and water, and improve the flow efficiency of the liquid. The wave shape can reduce the resistance of the fluid in the tube, make the liquid more stable during the flow process, and reduce possible stagnation and dead zones. The design of evenly distributed pits 212 can form a small water storage area, store nutrients that are not absorbed by the plant roots, and ensure that they can be supplied in time when the roots need them. The pits help the microbubbles generated by the ultrasonic aerator to gather, increase the gas solubility in the liquid, and provide more abundant oxygen for the plants. The presence of the pits can guide root growth, encouraging the roots to expand downward within the tube, and enhancing the plant's stability and absorption capacity.

[0027] like Figure 7 As shown, an ultrasonic transducer 25 is disposed at the lower end of the seedling tube 21 ; the ultrasonic transducer 25 generates high-frequency vibration when in operation, and this vibration causes a strong cavitation effect in the nutrient solution in the seedling tube 21 .

[0028] like Figure 4 As shown, a cup holder 31 is provided at the bottom of the seedling cup 3, and a liquid storage chamber 32 is provided at the upper part of the cup holder 31. The material of the cup holder 31 is porous ceramic, and a capillary structure is evenly distributed inside the cup holder 31 and extends through the liquid storage chamber 32. The material of the cup holder 31 is porous ceramic, and the porous ceramic material itself has many tiny pores, which allow air to enter the inside of the seedling cup 3. The root system of the strawberry seedling needs oxygen for respiration, and good air permeability can provide sufficient oxygen for the root system to prevent the root system from rotting due to lack of oxygen. The capillary structure can utilize the capillary phenomenon to automatically absorb liquid from the nutrient solution in the seedling tube 21. Just like we use paper towels to absorb water, this automatic absorption function can ensure that there is always a certain amount of nutrient solution in the seedling cup 3 without the need for frequent manual addition. Moreover, the capillary structure is evenly distributed, so that the absorption and supply of the nutrient solution are relatively uniform in the entire cup holder 31 area, providing a balanced nutrient environment for the strawberry seedling root system.

[0029] The liquid storage chamber 32 is located in the center of the bottom of the seedling cup 3, and the liquid storage chamber 32 is a shallow dish-shaped structure with a depression in the middle. This allows the nutrient solution to be distributed to the surrounding root system in a relatively balanced manner. The root system of the strawberry seedling grows radially at the bottom of the seedling cup 3, and the liquid storage chamber 32 in the center is like a center of a circle. The nutrient solution spreads from this center position to the surroundings, ensuring that each part of the root system has the opportunity to contact the nutrient solution, avoiding the growth and development of the root system affected by too much or too little local nutrient solution. The shallow dish-shaped structure can limit the storage amount of the nutrient solution in the liquid storage chamber 32. If the liquid storage chamber 32 is too deep or the capacity is too large, it may cause excessive accumulation of nutrient solution, causing the root system to be immersed in the nutrient solution for a long time, which is easy to cause hypoxia and root diseases. The shallow dish-shaped structure can avoid this situation and ensure that the root system is in a moderately moist environment. The shallow dish-shaped structure allows the nutrient solution to have a large surface area exposed to the air in the liquid storage chamber 32. This is conducive to oxygen exchange in the nutrient solution, increases the dissolved oxygen content in the nutrient solution, and provides sufficient oxygen for root respiration. Just as water in a shallow dish is more likely to come into contact with air than water in a deep cup, this structural design helps improve the quality of the nutrient solution and promote the healthy growth of the strawberry seedlings' roots.

[0030] The combined effect of the ultrasonic transducer 25 and the seedling cup 3 is: 1. Improved uniformity of nutrient solution: The ultrasonic transducer works in the seedling tube, fully mixing the nutrient solution through the cavitation effect to ensure uniform distribution of various nutrients. When the nutrient solution flows into the porous ceramic cup base at the bottom of the seedling cup, the capillary structure inside the porous ceramic can further evenly absorb and conduct the uniform nutrient solution to the storage chamber. This is like going through two "homogenization" processes, making the nutrient solution composition in the storage chamber more stable and uniform, providing a balanced nutrient absorption environment for the strawberry seedling roots, and avoiding the problem of unbalanced root development caused by local concentration differences in the nutrient solution.

[0031] 2. Efficient nutrient solution transmission: The vibration generated by the ultrasonic transducer helps to promote the flow of nutrient solution in the seedling tube and the entire system, allowing the nutrient solution to reach the seedling cup faster. The capillary structure of the porous ceramic cup base is like a miniature "nutrient solution transportation network", which quickly absorbs the nutrient solution that reaches the bottom of the cup base and transmits it to the liquid storage chamber. This combined design ensures that the nutrient solution can be efficiently and timely supplied to the root system of the strawberry seedlings, meeting the continuous demand for water and nutrients during the growth of the strawberry seedlings.

[0032] 3. Adequate oxygen supply: While the ultrasonic transducer increases the amount of dissolved oxygen in the nutrient solution in the seedling tube, the air permeability and capillary structure of the porous ceramic cup also create good conditions for gas exchange around the root system. Air can enter the liquid storage cavity through the pores of the porous ceramic, and the oxygen-rich nutrient solution enters the liquid storage cavity from the capillary structure, which together provide sufficient oxygen for the roots of the strawberry seedlings. This good oxygen supply environment can promote aerobic respiration of the roots, enhance the vitality and absorption capacity of the roots, and make the roots grow more healthily.

[0033] 4. Stable root growth environment: The design of the liquid storage chamber allows the strawberry seedling roots to be immersed in a relatively stable nutrient solution environment. It can buffer the impact of external factors on the nutrient solution, such as temperature changes and fluctuations in the composition of the nutrient solution. At the same time, the capillary structure can automatically adjust the supply of nutrient solution according to the absorption of the root system and the nutrient solution level in the liquid storage chamber, keeping the humidity and nutrient solution concentration around the root system within an appropriate range. This stable growth environment is conducive to the normal growth and development of the root system and reduces root damage and diseases caused by environmental changes.

[0034] Furthermore, the cavitation effect of the ultrasonic transducer can prevent the solutes in the nutrient solution from precipitating and impurities from accumulating in the seedling tube and system pipes, reducing the risk of blockage. The capillary structure of the porous ceramic cup also has a certain filtering effect, which can prevent larger particles of impurities from entering the liquid storage cavity, thereby reducing the possibility of failure of the entire seedling system due to impurity blockage and improving the reliability and stability of the system.

[0035] like Figure 4 As shown, the outer edge of the seedling cup 3 is provided with a uniform leakage groove 33, and the bottom of the seedling cup 3 is provided with a separation groove 34. The design of the leakage groove 33 can help the nutrient solution to enter and exit. Through the design of the leakage groove, better water management can be achieved, and a suitable humidity environment can be maintained, which is conducive to the healthy growth of strawberry seedlings. The separation groove 34 is used to separate the roots of the strawberry seedlings to prevent the roots from being entangled.

[0036] The working principle is divided into the following stages: 1. Preparation and supply of nutrient solution: The circulation mechanism 4 is responsible for the circulation of the nutrient solution of the entire system. The nutrient solution mixing box 41 accurately mixes water, fertilizer and other additives to prepare a nutrient solution suitable for the growth stage of the strawberry seedlings. After the circulation pump 42 is started, the nutrient solution is pumped out from the nutrient solution mixing box 41 and sent to the shunt pipe 44 through the main pipe 43. At the connection between the shunt pipe 44 and the liquid inlet 22 of the seedling tube mechanism 2, the pressure regulating valve 45 accurately adjusts the pressure and flow of the nutrient solution to ensure that each seedling tube mechanism 2 can obtain a stable and appropriate supply of nutrient solution.

[0037] 2. Oxygenation and pretreatment of nutrient solution in the seedling tube: After the nutrient solution enters the seedling tube 21 from the liquid inlet 22, it first encounters the ultrasonic aerator 24. The ultrasonic aerator 24 generates high-frequency vibrations when working, which causes a large number of tiny bubbles to be generated in the nutrient solution. These bubbles increase the contact area between the nutrient solution and the air, thereby significantly increasing the oxygen content in the nutrient solution. At the same time, the wavy lines 211 inside the seedling tube 21 and the pits 212 at the bottom work in synergy with the ultrasonic aerator 24. The wavy lines 211 cause the nutrient solution to fluctuate, and the pits 212 retain the nutrient solution. Together, the two extend the residence time of the nutrient solution in the oxygenation area, allowing the ultrasonic aerator 24 to more fully integrate oxygen into the nutrient solution, ensuring that the oxygen in the nutrient solution is evenly distributed, and providing good conditions for the subsequent respiration of the strawberry seedling roots.

[0038] 3. Nutrient solution mixing and fine treatment: The nutrient solution treated by the ultrasonic aerator 24 continues to flow in the seedling tube 21. When it reaches the lower end of the seedling tube 21, the ultrasonic transducer 25 starts to work. The high-frequency vibration generated by the ultrasonic transducer 25 triggers the cavitation effect in the nutrient solution, so that the solutes in the nutrient solution are further fully mixed, precipitation is prevented, the uniformity of the composition of the nutrient solution is optimized, and balanced nutrients are provided for the strawberry seedlings.

[0039] 4. Absorption and conduction of nutrient solution in the seedling cup: The nutrient solution flowing out of the seedling tube 21 enters the cup seat 31 at the bottom of the seedling cup 3. The cup seat 31 is made of porous ceramics, and has capillary structures evenly distributed inside. Under the treatment of the nutrient solution by the ultrasonic transducer 25, the nutrient solution entering the cup seat 31 is more easily absorbed by the capillary structure. The capillary structure uses capillary action to absorb the nutrient solution into the pores of the porous ceramics, and conducts it to the liquid storage cavity 32 on the upper part of the cup seat 31, so that the nutrient solution is evenly distributed in the cup seat 31 and the liquid storage cavity 32, providing a stable nutrient supply for the roots of the strawberry seedlings.

[0040] The roots of the strawberry seedlings are immersed in the nutrient solution in the liquid storage chamber 32, absorbing water and nutrients such as nitrogen, phosphorus, and potassium from the nutrient solution to maintain their growth and development. At the same time, the capillary structure of the cup seat 31 continues to work, automatically absorbing and replenishing the nutrient solution from the bottom according to the absorption of the roots and the liquid level of the nutrient solution in the liquid storage chamber 32, ensuring a stable supply of nutrient solution in the liquid storage chamber 32, and providing a continuous and suitable growth environment for the roots of the strawberry seedlings.

[0041] 5. Liquid return and circulation: After the strawberry seedlings absorb the nutrient solution, the remaining nutrient solution and some root metabolites that may be contained in it flow back into the seedling tube 21 through the partition groove 34 at the bottom of the seedling cup 3. The nutrient solution in the seedling tube 21 flows out from the liquid outlet 23 at the lower right end and returns to the nutrient solution mixing box 41 of the circulation mechanism 4. In the nutrient solution mixing box 41, the nutrient solution can be redistributed and processed again, such as replenishing consumed nutrients, adjusting pH, etc., and then enters the seedling tube mechanism 2 again through the circulation pump 42, the main pipeline 43, the shunt pipeline 44, etc., and starts a new cycle, thereby realizing the continuous recycling of the nutrient solution.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strawberry seedling raising system, comprising a seedling raising frame (1), a plurality of seedling raising tube mechanisms (2) being fixed to the front of the seedling raising frame (1), a seedling raising cup (3) being inserted in an array at the upper end of the seedling raising tube mechanism (2), and a circulation mechanism (4) being arranged at the bottom of the seedling raising frame (1); characterized in that: The seedling raising tube mechanism (2) comprises a seedling raising tube (21), a liquid inlet (22) is arranged on the left side of the seedling raising tube (21), a liquid outlet (23) is arranged at the lower end of the right side of the seedling raising tube (21), and an ultrasonic oxygenator (24) is arranged at the lower end of the liquid inlet (22); The seedling raising tube (21) is a hollow tube structure, the interior of the seedling raising tube (21) is provided with a wave pattern (211), the inner bottom of the seedling raising tube (21) is provided with evenly distributed pits (212), and the lower end of the seedling raising tube (21) is provided with an ultrasonic transducer (25); A cup seat (31) is provided at the bottom of the seedling raising cup (3), and a liquid storage cavity (32) is provided at the top of the cup seat (31). The cup seat (31) is made of porous ceramics, and capillary structures are evenly distributed inside the cup seat (31) and extend through and into the liquid storage cavity (32).

2. A strawberry seedling raising system according to claim 1, characterized in that: The seedling raising tube mechanism (2) and the seedling raising frame (1) are arranged to be inclined, and the inclination angle is 70°.

3. A strawberry seedling raising system according to claim 1, characterized in that: Inclined cup grooves (213) are evenly arranged at the upper end of the seedling raising tube (21).

4. A strawberry seedling raising system according to claim 1, characterized in that: The outer edge of the seedling raising cup (3) is provided with uniform drain grooves (33), and the bottom of the seedling raising cup (3) is provided with rib-shaped separation grooves (34).

5. A strawberry seedling raising system according to claim 1, characterized in that: The circulation mechanism (4) comprises a nutrient solution mixing box (41), the right side of the nutrient solution mixing box (41) is connected to a circulation pump (42), the liquid outlet of the circulation pump (42) is connected to a main pipeline (43), and the liquid outlet of the main pipeline (43) is connected to a branch pipeline (44).

6. A strawberry seedling raising system according to claim 5, characterized in that: The branch pipe (44) is connected to the liquid inlet (22).

7. A strawberry seedling raising system according to claim 5, characterized in that: A pressure regulating valve (45) is provided at the connection between the diversion pipeline (44) and the liquid inlet (22).

8. The strawberry seedling raising system according to claim 1, characterized in that: The liquid storage cavity (32) is located at the exact center of the bottom of the seedling raising cup (3), and the liquid storage cavity (32) is a shallow dish-shaped structure with a concave middle portion.

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