Seed priming device and method

Abstract

The invention discloses a seed priming device and method, relates to the technical field of plant cultivation, and aims to solve the technical problem that an existing seed priming device lacks uniform conduction and dynamic adjustment design of temperature in a priming space. The device comprises an initiation barrel, a seedling raising assembly, a temperature control assembly, a water and fertilizer supply assembly and a central controller, wherein the seedling raising assembly is provided with a plurality of seedling raising holes; the temperature control assembly comprises a heat dissipation plate, a plurality of heating parts, heat conduction rods and temperature sensors, the heating parts are all located in the heating cavity and evenly connected to the heat dissipation plate, the heat conduction rods are evenly connected to the heat dissipation plate, and the temperature sensors are connected to the tail ends of the heat conduction rods; the water and fertilizer supply assembly comprises a liquid storage tank, a water pump and an atomizing nozzle, the liquid storage tank is connected to the outer side wall of the triggering barrel, the atomizing nozzle is connected to the inner side wall of the triggering barrel, and the central controller is connected with the temperature control assembly and the water and fertilizer supply assembly. According to the device, uniform diffusion and accurate regulation and control of heat in an initiation space are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant cultivation, in particular to a seed priming device and method. BACKGROUND

[0002] As the basic core element of agricultural production, the germination quality of seeds directly determines the subsequent growth trend, stress resistance and final yield of crops. Seed priming technology can promote seeds to enter an active metabolic state in advance by accurately regulating the physiological and biochemical processes before seed germination, significantly improve seed germination rate, shorten germination period, and enhance the adaptability of seeds to adverse environments such as low temperature and drought. It has become a key pretreatment method for optimizing seed performance and ensuring the stability of agricultural production in modern agriculture, and has important application value in the fields of food crops, economic crops and vegetable seedling.

[0003] However, the existing seed priming device uses a single heating element for temperature control, lacks uniform conduction and dynamic adjustment design of the temperature in the priming space, and is prone to problems such as local temperature being too low to inhibit seed metabolism or local temperature being too high to damage seed embryos, which seriously affects the stability of priming effect. SUMMARY

[0004] The main purpose of the present application is to provide a seed priming device and method, which aims to solve the technical problem of the lack of uniform conduction and dynamic adjustment design of the temperature in the priming space in the existing seed priming device.

[0005] To achieve the above-mentioned purpose, the present application provides a seed priming device, which comprises: a priming barrel, a barrel cover is arranged on the priming barrel; a seedling raising assembly, the seedling raising assembly is arranged in the priming barrel, and the seedling raising assembly has a plurality of seedling holes; a temperature control assembly, the temperature control assembly comprises a heat dissipation plate, a plurality of heating components, a heat conduction rod and a temperature sensor, the heat dissipation plate is arranged around the priming barrel to form a heating cavity between the heat dissipation plate and the inner wall of the priming barrel, the heating components are divided into a plurality of groups, the plurality of groups of heating components are located in the heating cavity and are uniformly connected to the heat dissipation plate, the heat conduction rod is uniformly connected to one side of the heat dissipation plate facing the seedling raising assembly, and each temperature sensor is connected to the end of the heat conduction rod and is uniformly distributed in the internal space of the priming barrel; a water and fertilizer supply assembly, the water and fertilizer supply assembly comprises a liquid storage tank, a water pump and an atomizing nozzle, the liquid storage tank is connected to the outer side wall of the priming barrel, one end of the water pump is in communication with the liquid storage tank, the other end of the water pump is in communication with the atomizing nozzle, and the atomizing nozzle is connected to the inner side wall of the priming barrel; and a central controller, the central controller is connected with the temperature control assembly and the water and fertilizer supply assembly.

[0006] Optionally, the seedling assembly includes a support structure and a seedling tray. The support structure is stepped, and each layer of the support structure has a seedling tray, and each seedling tray has a seedling hole.

[0007] Optionally, the bottom of the seedling tray is provided with a liquid collection tank, and the liquid collection tank is provided with a liquid outlet. The water and fertilizer supply component also includes a circulation pump and a filter screen. The liquid outlet is connected to one end of the circulation pump, the other end of the circulation pump is connected to the filter screen, and the filter screen is connected to the liquid storage tank.

[0008] Optionally, the height difference between two adjacent layers of the support structure is 5-8 cm, and the seedling holes of the seedling trays in each two adjacent layers are staggered at a 60° angle in the vertical direction.

[0009] Optionally, the lid is made of glass, and the device further includes a light source control component, which includes a photon conversion layer and an LED supplementary lighting component. The photon conversion layer is coated on the inner surface of the lid, and the LED supplementary lighting component is installed on the inner wall of the lid.

[0010] Optionally, the light source control component further includes a light-shielding cloth, which is detachably covered on the outer surface of the bucket lid.

[0011] Optionally, the device further includes a CO2 control component, which includes a CO2 concentration sensor, a CO2 storage tank, and a CO2 replenishment valve. The CO2 concentration sensor is connected to the inner wall of the initiation tank, the CO2 storage tank is connected to the outer wall of the initiation tank, and the CO2 replenishment valve is connected to the inner wall of the initiation tank and located at the top of the initiation tank. The CO2 replenishment valve is in communication with the CO2 storage tank, and the CO2 concentration sensor and the CO2 replenishment valve are connected to the central controller.

[0012] Optionally, the bottom of the initiation tank is provided with an exhaust hole, and an exhaust fan is installed in the exhaust hole.

[0013] To achieve the above objectives, this application also provides a seed initiation method, employing the seed initiation apparatus described above, the method comprising: The seeds to be induced and the seed induced device are pretreated; The pretreated seeds are placed in the seedling holes, and the lid is closed to form a sealed incubation space; wherein, 1-2 seeds are placed in each seedling hole. The central controller sets the target temperature parameters required for seed initiation and activates the temperature control component. The temperature sensor collects temperature data from different areas inside the initiation tank in real time and feeds the temperature data back to the central controller. The central controller adjusts the working power of each group of heating components individually based on the feedback temperature data so that the temperature difference between different areas inside the initiation tank does not exceed ±0.5℃. The water and fertilizer supply component is activated by the central controller, and the atomizing nozzle will atomize the liquid and spray it towards the seedling component. The central controller continuously receives the temperature data fed back by the temperature sensor and adjusts the working state of the heating component according to the temperature data. At the same time, it detects the atomization spraying frequency and duration of the water and fertilizer supply component. When the length of the radicle of the seed to be induced reaches 1-1.5 times the seed diameter, the temperature control component and the water and fertilizer supply component are turned off, the lid is opened, the seeds in the seedling component are taken out, and the seed induced germination is completed.

[0014] Optionally, the pretreatment of the seed to be induced and the seed induced device includes: Near-infrared spectroscopy was used to screen the seeds for quality control, removing inferior seeds with a moisture content >12% and a germination rate <85%. For grass seeds, they were soaked in a 0.2%-0.4% calcium chloride solution for 8-12 minutes, followed by rinsing with sterile water 4-6 times. For solanaceous seeds, they were treated with ultrasound at 200-300W and 40kHz for 5-8 minutes, followed by rinsing with sterile water 4-6 times. The pre-treated seeds were then dried in a 35-40℃ hot air drying oven until the moisture content reached 8%-10%. Open the bucket lid and check the connection status of the heat sink, the heating element, the heat conduction rod, and the temperature sensor. Ensure that the liquid storage tank, the water pump, and the atomizing nozzle are unobstructed, and complete the device function verification.

[0015] The beneficial effects that this application can achieve are: This application discloses a seed initiation device that utilizes a heating cavity structure formed by a heat dissipation plate in a temperature control component and the inner wall of the initiation chamber. Combined with a uniformly distributed group of heating components and heat-conducting rods extending into the initiation space, a three-dimensional heat conduction network is achieved. Temperature sensors monitor temperature data in different areas within the initiation space in real time, and a central controller dynamically adjusts the differentiated power output of each group of heating components based on the feedback temperature data, achieving uniform heat diffusion and precise control within the initiation space. This device effectively overcomes the problem of abnormal seed metabolism caused by excessively high or low local temperatures in traditional devices, ensuring that seeds complete the initiation process synchronously within the temperature range of optimal physiological activity, thereby significantly improving the uniformity and robustness of seed germination. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural schematic diagram of a seed initiation device according to an embodiment of this application; Figure 2 The embodiments of this application involve Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the seedling tray structure of a seed initiation device according to an embodiment of this application.

[0017] The attached figures are labeled as follows: 1-Initiation tank; 2-Tank lid; 3-Seedling component; 4-Seedling hole; 5-Temperature control component; 6-Heat dissipation plate; 7-Heating component; 8-Heat conduction rod; 9-Temperature sensor; 10-Heating chamber; 11-Water and fertilizer supply component; 12-Storage tank; 13-Water pump; 14-Atomizing nozzle; 15-Support structure; 16-Seedling tray; 17-Collection tank; 18-Outlet; 19-Circulation pump; 20-Light source control component; 21-Photon conversion layer; 22-LED supplemental lighting component; 23-Shading cloth; 24-CO2 control component; 25-CO2 storage tank; 26-CO2 supplemental valve; 27-Exhaust port; 28-Exhaust fan.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Analysis revealed that the core bottleneck in current seed priming technology lies in the structural limitations of traditional temperature control systems. Existing devices generally rely on a single heating element for overall temperature regulation. This simple heating mode lacks refined design for the heat flow distribution within the three-dimensional priming space. Due to the single heat conduction path and sparse monitoring points, temperature gradients easily form during natural convection within the confined space, resulting in significant temperature differences in the vertical and horizontal directions. Specifically, the upper region is prone to forming high-temperature hotspots due to the accumulation of hot air, which may denature and inactivate seed embryo proteins; while the bottom layer and corner areas form low-temperature blind zones due to attenuated heat conduction, making it difficult to activate enzymatic reactions within the seed. This instability of the thermal environment directly disrupts the metabolic synchronicity required for seed germination, causing uneven germination and large fluctuations in priming effectiveness.

[0021] Therefore, in order to achieve uniform diffusion and dynamic control of heat within the ignition space, this invention proposes a novel seed ignition device.

[0022] Reference Figure 1 and Figure 2 This application provides a seed initiation device, the device comprising: Initiation tank 1, with a lid 2 provided on it; Seedling component 3, which is disposed inside the initiation tank 1, and has a plurality of seedling holes 4; Temperature control component 5 includes a heat sink 6, several heating components 7, heat conducting rods 8, and temperature sensors 9. The heat sink 6 is arranged inside the initiation tank 1 and forms a heating cavity 10 between it and the inner wall of the initiation tank 1. The heating components 7 are divided into several groups, and the several groups of heating components 7 are all located in the heating cavity 10 and are evenly connected to the heat sink 6. The heat conducting rods 8 are evenly connected to the side of the heat sink 6 facing the seedling component 3. Each temperature sensor 9 is connected to the end of the heat conducting rod 8 and is evenly distributed in the internal space of the initiation tank 1. A water and fertilizer supply assembly 11 includes a storage tank 12, a water pump 13, and an atomizing nozzle 14. The storage tank 12 is connected to the outer wall of the initiation tank 1. One end of the water pump 13 is connected to the storage tank 12, and the other end of the water pump 13 is connected to the atomizing nozzle 14. The atomizing nozzle 14 is connected to the inner wall of the initiation tank 1. A central controller is connected to the temperature control component 5 and the water and fertilizer supply component 11.

[0023] In this embodiment, the central controller activates the temperature control component 5 according to the preset target temperature parameters. Multiple sets of heating components 7, evenly distributed within the heating chamber 10, generate heat. After initial equalization via the heat dissipation plate 6, the heat is efficiently conducted to the internal space of the initiation tank 1 by heat-conducting rods 8 evenly connected to its surface. Simultaneously, temperature sensors 9 connected to the end of the heat-conducting rods 8 monitor temperature data in different areas in real time and feed it back to the central controller. The central controller dynamically adjusts the independent operating power of each set of heating components 7 to achieve precise and balanced temperature control within the initiation space. During this process, the water and fertilizer supply component 11 is activated under control. The water pump 13 delivers the nutrient solution in the storage tank 12 to the atomizing nozzle 14, forming micron-sized droplets that are evenly sprayed onto the seed surface of the seedling component 3, providing a suitable moisture and nutrient environment for germination.

[0024] It should be noted that the heating component 7 described above can be a combination of a resistance heating wire and a copper coil. The resistance heating wire generates Joule heat when energized, serving as the primary heat source; the externally fitted copper coil utilizes the excellent thermal conductivity of copper to rapidly absorb and laterally diffuse the concentrated heat generated by the resistance heating wire across the entire surface of the heat sink 6, forming a uniform heat radiation surface. This combined structure design achieves efficient conversion from a point heat source to a surface heat source, effectively preventing localized overheating.

[0025] The seed initiation device proposed in the above embodiment utilizes a heating cavity 10 structure formed by the heat dissipation plate 6 in the temperature control component 5 and the inner wall of the initiation tank 1, combined with uniformly distributed heating components 7 and heat-conducting rods 8 extending into the initiation space, to achieve a three-dimensional heat conduction network. Temperature sensors 9 monitor temperature data in different areas of the initiation space in real time, and the central controller dynamically adjusts the differentiated power output of each group of heating components 7 based on the feedback temperature data, achieving uniform heat diffusion and precise control within the initiation space. This design effectively overcomes the problem of abnormal seed metabolism caused by excessively high or low local temperatures in traditional devices, ensuring that seeds complete the initiation process synchronously within the temperature range of optimal physiological activity, thereby significantly improving the uniformity and robustness of seed germination.

[0026] As an alternative implementation method, refer to Figure 1 and Figure 3 The seedling component 3 includes a support structure 15 and a seedling tray 16. The support structure 15 is stepped, and each layer of the support structure 15 is provided with a seedling tray 16. Each seedling tray 16 has a seedling hole 4.

[0027] In this embodiment, the support structure 15 forms a multi-layered stepped support platform inside the initiation tank 1, with each layer independently holding a seedling tray 16 having uniformly spaced seedling holes 4. This layout makes full use of the vertical space of the device, allowing heat to be conducted from the heating chamber 10 through the heat-conducting rod 8, forming a uniform temperature gradient distribution from bottom to top along the stepped structure. The atomized droplets generated by the water and fertilizer supply component 11 settle from top to bottom under gravity, achieving comprehensive coverage of the seeds on each seedling tray 16. At the same time, the stepped layout significantly improves the space utilization rate inside the ceramic cylinder, maximizing the number of seeds that can be carried within a limited volume, thereby effectively cultivating a larger number of initiation seeds.

[0028] As an alternative implementation method, refer to Figure 3 The bottom of the seedling tray 16 is provided with a liquid collection tank 17, and the liquid collection tank 17 is provided with a liquid outlet 18. The water and fertilizer supply component 11 also includes a circulation pump 19 and a filter screen. The liquid outlet 18 is connected to one end of the circulation pump 19, the other end of the circulation pump 19 is connected to the filter screen, and the filter screen is connected to the liquid storage tank 12.

[0029] In this embodiment, after the water and fertilizer supply component 11 sprays droplets onto the seedling tray 16 through the atomizing nozzle 14, the excess initiation solution that is not absorbed by the seeds in time will fall into the collection tank 17 at the bottom of the seedling tray 16 under the action of gravity. The outlet 18 in the collection tank 17 is connected to the circulation pump 19 through a pipe, which can transport the collected residual liquid fertilizer to the filter screen for impurity filtration. The purified initiation solution is finally returned to the storage tank 12, realizing the recycling of nutrient solution. By using the collection tank 17 and the circulation pump 19 together, not only is the accumulation of nutrient solution at the bottom of the seedling tray 16 effectively avoided, but the utilization rate of water and fertilizer resources is also significantly improved. The filter screen ensures the cleanliness of the returned initiation solution, preventing impurities from clogging the atomizing nozzle 14 or affecting the seed initiation environment. This reduces operating costs and maintains the sanitary conditions of the initiation space, providing a continuous and stable high-quality growth environment for the seeds.

[0030] As an alternative implementation method, refer to Figure 1 The height difference between two adjacent layers of the support structure 15 is 5-8cm, and the seedling holes 4 of the seedling trays 16 in each adjacent layer are staggered at a 60° angle in the vertical direction.

[0031] In this embodiment, a height difference of 5-8 cm provides optimal upward space for natural convection of hot air, avoiding the formation of turbulent dead zones. The staggered distribution of seedling holes 4 at 60° angles creates spatial misalignment between the upper and lower seed layers. When heat generated by the temperature control component 5 is conducted through the heat-conducting rod 8, the heat can penetrate and flow between layers along a spiral path formed by the 60° angle. Simultaneously, the water and fertilizer atomized particles gain a longer suspension time during gravity settling due to the staggered hole positions, achieving three-dimensional circumferential diffusion of droplets in the vertical direction. This layout achieves synergistic optimization of space utilization and microenvironment uniformity: it increases seed carrying capacity by approximately 40% through vertical misalignment, and utilizes the vortex effect formed by the 60° angle to control the difference in heat intensity between seed layers within ±0.3℃. This effectively avoids the defects common in traditional parallel layered structures, such as upper layer shading and insufficient temperature and humidity in the lower layer, providing an ideal physical carrier for large-scale seed priming that combines high density and homogeneity.

[0032] As an alternative implementation method, refer to Figure 1 The bucket lid 2 is made of glass. The device also includes a light source control component 20, which includes a photon conversion layer 21 and an LED supplementary light component 22. The photon conversion layer 21 is coated on the inner surface of the bucket lid 2, and the LED supplementary light component 22 is installed on the inner wall of the bucket lid 2.

[0033] In this embodiment, the glass lid 2 serves as a medium for introducing natural light. The photon conversion layer 21 coated on its inner surface can efficiently convert ultraviolet light and ineffective wavelengths in the solar spectrum into specific wavelengths such as blue light and red light that are beneficial to seed germination. At the same time, the LED supplementary lighting component 22 installed on the inner wall of the lid 2 is intelligently activated by the central controller when natural light is insufficient, emitting a precisely proportioned spectrum to supplement the light for the seeds.

[0034] As an alternative implementation method, refer to Figure 1 The light source control component 20 also includes a light-shielding cloth 23, which is detachably covered on the outer surface of the bucket lid 2.

[0035] In this embodiment, when dark initiation processing is required or precise control of the light cycle is required, the light-blocking cloth 23 can be covered on the outer surface of the glass barrel lid 2 to achieve a completely dark environment in the initiation space through physical isolation; when natural light or artificial supplementary light is required, the light-blocking cloth 23 can be quickly removed to restore the light-transmitting state.

[0036] As an alternative implementation method, refer to Figure 1 The device further includes a CO2 control component 24, which includes a CO2 concentration sensor, a CO2 storage tank 25, and a CO2 replenishment valve 26. The CO2 concentration sensor is connected to the inner wall of the initiation tank 1, the CO2 storage tank 25 is connected to the outer wall of the initiation tank 1, and the CO2 replenishment valve 26 is connected to the inner wall of the initiation tank 1 and located at the top of the initiation tank 1. The CO2 replenishment valve 26 is connected to the CO2 storage tank 25, and the CO2 concentration sensor and the CO2 replenishment valve 26 are connected to the central controller.

[0037] In this embodiment, a CO2 concentration sensor monitors the CO2 concentration data inside the initiation tank 1 in real time and feeds it back to the central controller. When the concentration is lower than the threshold required for seed respiration, the central controller controls the CO2 supplement valve 26 to open, allowing food-grade carbon dioxide from the CO2 storage tank 25 to be evenly injected into the sealed space through the CO2 supplement valve 26 located at the top of the tank. The top supplement design, combined with the thermal convection effect inside the initiation tank 1, avoids local CO2 accumulation that leads to concentration stratification, ensuring gas consistency in the microenvironment of each seed. Working in conjunction with the temperature and light control systems, it forms a multi-parameter coupled optimal initiation environment, which has a significant promoting effect on lipid metabolism transformation, especially for high-oil-content seeds.

[0038] As an alternative implementation method, refer to Figure 3 The bottom of the initiation tank 1 is provided with an exhaust hole 27, and an exhaust fan 28 is installed in the exhaust hole 27.

[0039] In this embodiment, when the humidity inside the barrel is too high or the CO2 concentration is unbalanced due to seed respiration or water evaporation, the central controller starts the exhaust fan 28 to actively discharge the high humidity air, excess CO2 and metabolic waste gas deposited at the bottom through the bottom exhaust port 27; at the same time, the negative pressure effect formed inside the barrel will cause fresh air at the top to flow in naturally, forming a vertical airflow circulation from bottom to top.

[0040] This application embodiment also provides a seed initiation method, which employs the seed initiation device described in the above embodiments, the method comprising: S10: Pre-process the seeds to be induced and the seed induced device.

[0041] In some embodiments, pretreatment of the seeds to be induced includes: using a near-infrared spectroscopy detector to screen the seeds for quality, removing inferior seeds with a moisture content >12% and a germination rate <85%; if the seed type is a gramineous seed, soaking the seeds in a 0.2%-0.4% calcium chloride solution for 8-12 minutes, followed by rinsing with sterile water 4-6 times; if the seed type is a solanaceous seed, treating it in an ultrasonic environment with a power of 200-300W and a frequency of 40kHz for 5-8 minutes, followed by rinsing with sterile water 4-6 times; and drying the pretreated seeds in a hot air drying oven at 35-40℃ until the moisture content is 8%-10%. Pretreatment of the seed induced device includes: opening the lid 2, checking the connection status of the heat dissipation plate 6, the heating element 7, the heat conduction rod 8, and the temperature sensor 9, ensuring that the channels of the liquid storage tank 12, the water pump 13, and the atomizing nozzle 14 are unobstructed, and completing the device function verification.

[0042] S20: Place the pretreated seeds into the seedling holes 4 and close the lid 2 to form a sealed seeding space; wherein, 1-2 seeds are placed in each of the seedling holes 4.

[0043] In some embodiments, the three-dimensional spatial layout of the stepped seedling trays 16 allows the seeds to be staggered at a 60° angle in the vertical direction. A vacuum seed suction device precisely implants the pre-treated seeds into the seedling holes 4, with a density of 1-2 seeds per hole, avoiding resource waste while reserving growth space. The moment the glass lid 2 closes, the photon conversion layer 21 on the inner wall of the lid 2 is automatically activated, converting ineffective wavelengths of natural light into 600-660nm red-orange light, forming a composite spectrum with the LED supplementary lighting component 22. At this time, the CO2 control component 24 injects a base concentration of 800ppm gas, forming a low-speed airflow circulation with the exhaust fan 28, constructing an initial microenvironment synergistic between light, gas, and heat.

[0044] S30: The central controller sets the target temperature parameters required for seed initiation and starts the temperature control component 5. The temperature sensor 9 collects temperature data of different areas in the initiation tank 1 in real time and feeds the temperature data back to the central controller. The central controller adjusts the working power of each group of heating components 7 individually according to the feedback temperature data so that the temperature difference between different areas in the initiation tank 1 does not exceed ±0.5℃.

[0045] In some embodiments, the central controller sets the target temperature according to the seed type, and each heating component 7 operates in a zone within the heating cavity 10. The heat-conducting rod 8 transmits heat to each layer of the space via radiation. A temperature sensor 9 located at the end of the heat-conducting rod 8 collects temperature data from 16 zones with a response time of 0.1 seconds. When the lower layer temperature is detected to be too low, the controller immediately increases the power of the bottom heating component 7 to 120%, while simultaneously adjusting the power of the middle layer to 85%. An adaptive PID algorithm ensures that the vertical temperature difference does not exceed ±0.5℃. In particular, by directly conducting heat to the seed growth area through the heat-conducting rod 8, rather than simply heating the air, a truly uniform thermal field distribution is achieved.

[0046] It should be noted that the adaptive PID algorithm refers to the proportional-integral-derivative control algorithm, which specifically calculates a control quantity based on the current error, the past accumulation of error, and the trend of error change, so that the controlled physical quantity (such as temperature, speed, pressure, etc.) can quickly, accurately, and stably reach and maintain the preset target value.

[0047] S40: The water and fertilizer supply component 11 is activated by the central controller, and the atomizing nozzle 14 will atomize the liquid and spray it towards the seedling component 3.

[0048] In some embodiments, the initiating solution in the storage tank 12 is atomized into droplets with a particle size of <10μm by the atomizing nozzle 14 and sprayed evenly toward the seedling assembly 3. The collection tank 17 at the bottom of the seedling tray 16 collects the unabsorbed droplets. After the seed debris is removed by the filter screen, the initiating solution is returned to the storage tank 12 by the circulation pump 19, increasing the utilization rate of the initiating solution to 85%. This circulation system not only saves resources but also maintains a stable ion concentration of the initiating solution.

[0049] S50: The central controller continuously receives the temperature data fed back by the temperature sensor 9, and adjusts the working state of the heating component 7 according to the temperature data, while detecting the atomization spraying frequency and duration of the water and fertilizer supply component 11; when the length of the radicle of the seed to be induced reaches 1-1.5 times the seed diameter, the temperature control component 5 and the water and fertilizer supply component 11 are turned off, the bucket lid 2 is opened, the seeds in the seedling component 3 are taken out, and the seed induced germination is completed.

[0050] In some embodiments, high-definition microscopes continuously capture images of radicle development, and machine learning algorithms are used to compare the ratio of radicle to seed diameter. When it is detected that the radicle length of more than 60% of the seeds reaches 1.15 times the seed diameter, the central controller immediately executes a gradient cooling program: first, the temperature is lowered to ambient temperature at a rate of 2°C / minute, and then the water and fertilizer supply is shut off. In the final stage, the exhaust fan 28 runs at high speed for 10 minutes to remove high-humidity gases, preventing condensation from damaging the radicle during seed collection.

[0051] The seed initiation method proposed in the above embodiments uses a central controller to independently adjust the power of each heating component 7 based on multi-point data fed back by the temperature sensor 9, thereby creating a uniform and stable temperature field within the initiation space with a temperature difference of ≤±0.5℃. Simultaneously, the atomizing nozzle 14 converts water and fertilizer into micron-sized droplets to achieve uniform three-dimensional spatial coverage. Precise temperature control avoids the thermal damage or metabolic inhibition caused to seeds by localized high or low temperatures in traditional devices, allowing the seed embryos to simultaneously enter a metabolically active state.

[0052] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A seed priming apparatus, characterized by, The device comprises: a priming barrel provided with a barrel cover; a seedling raising assembly arranged in the priming barrel, the seedling raising assembly having a plurality of seedling holes; a temperature control assembly comprising a heat dissipation plate, a plurality of heating components, a heat conduction rod, and temperature sensors, the heat dissipation plate being arranged around the priming barrel to form a heating cavity between the heat dissipation plate and the inner wall of the priming barrel, the heating components being divided into a plurality of groups, each group of the heating components being arranged in the heating cavity and being uniformly connected to the heat dissipation plate, the heat conduction rod being uniformly connected to one side of the heat dissipation plate facing the seedling raising assembly, and each temperature sensor being connected to the end of the heat conduction rod and being uniformly distributed in the internal space of the priming barrel; a water and fertilizer supply assembly comprising a liquid storage tank, a water pump, and an atomizing nozzle, the liquid storage tank being connected to the outer side wall of the priming barrel, one end of the water pump being in communication with the liquid storage tank, the other end of the water pump being in communication with the atomizing nozzle, and the atomizing nozzle being connected to the inner side wall of the priming barrel; and a central controller connected to the temperature control assembly and the water and fertilizer supply assembly.

2. The seed priming apparatus of claim 1, wherein The seedling raising assembly comprises a support structure and seedling trays, the support structure being in a stepped shape, and each layer of the support structure being provided with a seedling tray, and each seedling tray being provided with the seedling holes.

3. The seed priming apparatus of claim 2, wherein The bottom of each seedling tray is provided with a liquid collecting groove, the liquid collecting groove being provided with a liquid outlet, the water and fertilizer supply assembly further comprising a circulating pump and a filter screen, the liquid outlet being in communication with one end of the circulating pump, the other end of the circulating pump being in communication with the filter screen, and the filter screen being in communication with the liquid storage tank.

4. The seed priming apparatus of claim 2, wherein The height difference between two adjacent layers of the support structure is 5-8 cm, and the seedling holes of the seedling trays of each two adjacent layers are staggered and distributed at an angle of 60° in the vertical direction.

5. The seed priming apparatus of claim 1, wherein The barrel cover is made of glass, and the device further comprises a light source control assembly, the light source control assembly comprising a light quantum conversion layer and an LED light supplement assembly, the light quantum conversion layer being coated on the inner surface of the barrel cover, and the LED light supplement assembly being mounted on the inner wall of the barrel cover.

6. The seed priming apparatus of claim 5, wherein The light source control assembly further comprises a light shielding cloth, the light shielding cloth being detachably arranged on the outer surface of the barrel cover.

7. The seed priming apparatus of claim 1, wherein The device further comprises a CO2 control assembly, the CO2 control assembly comprising a CO2 concentration sensor, a CO2 storage tank, and a CO2 air supplement valve, the CO2 concentration sensor being connected to the inner side wall of the priming barrel, the CO2 storage tank being connected to the outer side wall of the priming barrel, the CO2 air supplement valve being connected to the inner side wall of the priming barrel and being located at the top of the priming barrel, the CO2 air supplement valve being in communication with the CO2 storage tank, and the CO2 concentration sensor, the CO2 air supplement valve, and the central controller being connected.

8. The seed priming apparatus of claim 1, wherein An exhaust fan is mounted in an exhaust hole formed in the bottom of the priming barrel.

9. A seed priming method using the seed priming apparatus according to any one of claims 1 to 8, characterized by, The method comprises: pretreating the seeds to be primed and the seed priming device; placing the pretreated seeds in the seedling holes and covering the barrel cover to form a closed priming space; and placing 1-2 seeds in each seedling hole. The central controller sets the target temperature parameters required for seed germination, and starts the temperature control assembly. The temperature sensor collects temperature data of different areas in the germination barrel in real time and feeds back the temperature data to the central controller. The central controller adjusts the working power of each group of heating components according to the feedback temperature data, so that the temperature difference of each area in the germination barrel does not exceed ±0.5℃; The central controller starts the water and fertilizer supply assembly, and the atomizing nozzle sprays the atomized germination liquid to the direction of the seedling assembly. The central controller continuously receives the temperature data fed back by the temperature sensor, adjusts the working state of the heating components according to the feedback temperature data, and detects the atomizing spray frequency and duration of the water and fertilizer supply assembly. When the radicle length of the seed to be germinated reaches 1-1.5 times of the seed diameter, the temperature control assembly and the water and fertilizer supply assembly are turned off, the barrel cover is opened, the seed in the seedling assembly is taken out, and the seed germination is completed.

10. The seed priming method of claim 9, wherein The pretreatment of the seed to be germinated and the seed germination device includes: The near-infrared spectrum detector is used for quality screening of the seed to be germinated, and the inferior seed with water content >12% and germination rate <85% is removed. If the seed type is Gramineae seed, the seed is soaked in calcium chloride solution with a mass concentration of 0.2%-0.4% for 8-12 minutes, and then washed with sterile water for 4-6 times. If the seed type is solanaceous seed, it is treated in an ultrasonic environment with a power of 200-300W and a frequency of 40kHz for 5-8 minutes, and then washed with sterile water for 4-6 times. The pretreated seed is dried in a hot air drying oven at 35-40℃ to a moisture content of 8%-10%; The barrel cover is opened, the connection state of the heat sink, the heating component, the heat conducting rod and the temperature sensor is checked, the passageway of the liquid storage tank, the water pump and the atomizing nozzle is ensured unobstructed, and the device function verification is completed.

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