Rice seed incubation device and method

Abstract

The application relates to the technical field of agricultural planting equipment, and discloses a rice seed cultivation device and method. The rice seed cultivation device comprises a cultivation box body, multiple cultivation growth modules, a temperature regulation module and a control end; the multiple cultivation growth modules are arranged in the cultivation box body in a spaced manner from top to bottom, and the internal space of the cultivation box body is divided into multiple independent cultivation growth areas; the temperature regulation module comprises a main heating element arranged at the bottom of the cultivation box body, an auxiliary heating element and a temperature sensing element; the auxiliary heating element comprises a heating execution part and a driving execution part. Through the cooperative working mode of the movable auxiliary heating mechanism and the fixed main heating mechanism and the active regulation strategy based on the environmental temperature prediction, the most sensitive area can be cooperatively heated and intervened in advance through prediction before the actual temperature in the box drops below the threshold value caused by the sudden drop of the external environmental temperature, so that the seedling cold damage is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting equipment technology, and more specifically, to a rice seed cultivation device and method. Background Technology

[0002] Rice seedling cultivation is a crucial step in rice production, and its success directly affects seedling quality and final yield. When rice seeds are cultivated in an artificial environment (such as a seedling tray), temperature is the core environmental factor affecting seed germination and seedling growth. Different cultivation stages (such as germination, emergence, and seedling raising) have different temperature requirements. Even within the same seedling tray, significant vertical temperature differences can occur at different locations due to rising hot air and uneven heat distribution.

[0003] Currently, most common seed incubators use a single bottom heating method. While this method can meet the basic temperature control needs within the incubator, it still has certain shortcomings in practical use. For example, when the external ambient temperature changes drastically (such as a sudden drop in temperature at night), the heat transfer from the bottom heating is delayed. The temperature at the top or edge of the incubator will drop first and may fall below the critical temperature for crop growth. Existing control systems can only respond to heating after detecting that the internal temperature is too low, by which time the seedlings may have already suffered chilling injury.

[0004] Therefore, there is an urgent need for a cultivation device and method that can actively predict temperature changes and rapidly and accurately intervene in the temperature of specific areas within the chamber, in order to solve the problems of lagging and uneven temperature control in existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a rice seed cultivation device and method to solve the above-mentioned technical problems.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] This invention provides a rice seed cultivation device, comprising: a cultivation box, multiple cultivation and growth modules, a temperature control module, and a control terminal;

[0008] Multiple cultivation and growth modules are arranged at intervals from top to bottom inside the cultivation box, dividing the internal space of the cultivation box into multiple independent cultivation and growth zones;

[0009] The temperature control module includes a main heating element, an auxiliary heating element, and a temperature sensing element located at the bottom of the cultivation chamber. The auxiliary heating element includes a heating execution unit and a driving execution unit. The heating execution unit is movably located on one side of the cultivation chamber, and the driving execution unit is used to drive the heating execution unit to move along a preset path to directionally heat different cultivation and growth zones. The temperature sensing element is used to monitor the temperature in each cultivation and growth zone and the ambient temperature outside the cultivation chamber in real time.

[0010] The control terminal is communicatively connected to the main heating element, the auxiliary heating element, and the temperature sensing element, and has a built-in environmental sudden drop control strategy.

[0011] The environmental temperature drop control strategy is as follows: when the temperature drop received by the control terminal exceeds the preset threshold, the primary growth zone most affected by this is predicted. Before the temperature in this zone actually drops to the target threshold, the auxiliary heating element is controlled to move to the estimated primary growth zone in advance, and the main heating element and the auxiliary heating element that has moved to the position are instructed to start synchronously to perform coordinated preheating intervention in this zone.

[0012] Preferably, the side wall of the cultivation box is provided with a double-layer space, the auxiliary heating element is located in the double-layer space, and one side of the double-layer space is provided with a plurality of ventilation openings corresponding to and communicating with each cultivation growth zone.

[0013] Preferably, the heating actuator is a hot air generator that is slidably disposed in the interlayer space, and the driving actuator drives the hot air generator to move linearly up and down along the interlayer space.

[0014] Preferably, the drive actuator includes a servo motor and a lead screw connected to the output end of the servo motor. The lead screw is rotatably disposed in the interlayer space, and its outer side is threadedly connected to one side of the hot air generator.

[0015] Preferably, the temperature sensing element includes an ambient temperature sensor located on the outside of the cultivation chamber and a group of temperature sensors located in each cultivation growth zone for multi-point monitoring of the temperature in that zone.

[0016] Preferably, when the control terminal performs temperature regulation, it calculates and sets the power boost value of the main heating element, the start-up power of the auxiliary heating element, and the estimated dwell time based on the predicted rate and magnitude of the sudden drop in ambient temperature using a thermodynamic model.

[0017] Preferably, the primary target cultivation and growth area is the region most sensitive to sudden drops in ambient temperature, as predicted by the spatial thermal field distribution model of the cultivation chamber.

[0018] Preferably, the control terminal is further configured to: when the environmental drop regulation strategy is not triggered and the temperature of any cultivation and growth zone is detected to be lower than its preset threshold, trigger the fixed-point auxiliary heating strategy, control the auxiliary heating element to move to the zone and start heating.

[0019] A temperature control method for rice seed cultivation includes the following steps:

[0020] S100, Data Acquisition: Collects ambient temperature data of the external environment of the incubator, as well as internal temperature data of each independent incubation and growth zone inside the incubator;

[0021] S200, Sudden Drop Judgment: Analyze the real-time trend of ambient temperature data to determine whether the preset ambient temperature sudden drop conditions are met.

[0022] If satisfied, proceed to step S300;

[0023] S300, Predictive Co-heating:

[0024] S301, Target Determination: Based on the trend of a sudden drop in ambient temperature, determine the risk-prone cultivation and growth area where the temperature will first deviate from the preset range.

[0025] S302, Early Intervention: Before the internal temperature of the estimated risk cultivation and growth zone actually drops to its preset threshold, a displacement command is generated to drive the auxiliary heating element to move to the corresponding position in that zone.

[0026] S303, Cooperative Execution: After the auxiliary heating element is in place, a heating command is generated, causing the main heating element and the auxiliary heating element to start simultaneously, and jointly heat the estimated risk cultivation and growth area.

[0027] Preferably, in step S200, if the condition of a sudden drop in ambient temperature is not met, the internal temperature data of each cultivation and growth zone is continuously compared with its preset target threshold; when any internal temperature data is lower than its threshold, a fixed-point auxiliary heating step is executed: the auxiliary heating element is driven to move to the cultivation and growth zone where the temperature does not meet the standard and heating is started.

[0028] The beneficial effects of this invention are as follows:

[0029] This invention introduces a collaborative working mode of a movable auxiliary heating mechanism and a fixed main heating mechanism, combined with an active control strategy based on ambient temperature prediction. This changes the traditional passive temperature control mode. It can predict and intervene in the most sensitive areas in advance by heating before the actual temperature inside the box drops below the threshold due to a sudden drop in the external ambient temperature, effectively preventing seedling chilling injury. Secondly, it precisely solves the problem of excessive temperature difference between the upper and lower layers in multi-layer incubators. Through the directional movement of the auxiliary heating mechanism to supplement the temperature, the temperature uniformity of each independent incubation area is significantly improved, ensuring consistent seedling growth. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a rice seed cultivation device according to the present invention;

[0031] Figure 2 This is a front view of a rice seed cultivation device according to the present invention;

[0032] Figure 3 This is a cross-sectional view of a rice seed cultivation device according to the present invention from the right-hand perspective.

[0033] Figure 4 This is a block diagram showing the relationship between the temperature control module and the control terminal in a rice seed cultivation device of the present invention.

[0034] Figure 5 This is a flowchart of a temperature control method for rice seed cultivation according to the present invention.

[0035] In the diagram: 10, cultivation box; 101, cultivation and growth area; 102, interlayer space; 103, ventilation opening; 20, cultivation and growth module; 301, main heating element; 302, auxiliary heating element; 3021, hot air generator; 3022, servo motor; 3023, lead screw; 303, temperature sensing element. Detailed Implementation

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0037] Please refer to the following: Figures 1 to 5 A rice seed cultivation device includes: a vertical cultivation box 10, with an insulated cover plate with a sealing strip on the top of the cultivation box 10 to reduce heat loss. Inside the cultivation box 10, three cultivation growth modules 20 are evenly fixed from top to bottom by a support frame. Each cultivation growth module 20 includes a support plate for supporting a standard seedling tray, a lighting mechanism located above the support plate, and a nutrient solution supply mechanism for delivering nutrients to the support plate. These three cultivation growth modules 20 clearly divide the space inside the box into three independent cultivation growth areas 101, each of which can independently hold a seedling tray.

[0038] The temperature control module, as the core functional unit of this invention, includes a main heating element 301, an auxiliary heating element 302, and a temperature sensing element 303. The main heating element 301 is located at the bottom of the cultivation chamber 10 and is responsible for providing the basic heat for the entire chamber. The auxiliary heating element 302 is integrated into a mezzanine space 102 in the rear side wall of the cultivation chamber 10, and three rows of ventilation openings 103 are provided on the inner side wall of this mezzanine space 102 (facing inwards). The position of each row of ventilation openings 103 precisely corresponds to a cultivation growth area 101. The auxiliary heating element 302 includes a heating actuator and a driving actuator. The heating actuator is specifically a hot air generator 3021 that can slide along a guide rail within the mezzanine space 102. It contains a PTC heating element and a small centrifugal fan, the rated power of which is adjustable, and the air outlet is aligned with the ventilation opening 103. The drive actuator includes a servo motor 3022 and a vertically mounted precision ball screw 3023. The servo motor 3022 drives the ball screw 3023 to rotate through a coupling, and the hot air generator 3021 connected to the ball screw 3023 through a nut pair achieves precise linear lifting and lowering, and its stroke can cover the entire mezzanine height.

[0039] The temperature sensing element 303 includes three indoor temperature sensor groups and one ambient temperature sensor. Each indoor temperature sensor group is correspondingly installed in one of the three cultivation and growth zones 101. Each indoor temperature sensor group includes two contact temperature sensors and two infrared temperature sensors. The two contact temperature sensors are embedded in the seedling tray substrate of the corresponding cultivation and growth zone 101, allowing the user to obtain the real-time temperature of the substrate. The two infrared temperature sensors are suspended in the air above the zone to obtain the ambient temperature within the cultivation and growth zone 101. The values ​​from the contact and infrared temperature sensors are averaged to improve monitoring accuracy. The ambient temperature sensor, which is an infrared temperature sensor, is installed on the outer wall of the enclosure and is used to obtain real-time external temperature data.

[0040] The control unit typically uses an industrial PLC controller and is equipped with a touch screen as the human-machine interface. The control unit communicates via a bus with the servo motor 3022 of the main heating element 301, the hot air generator 3021 of the auxiliary heating element 302, and all temperature sensors in the temperature sensing element 303. The control unit incorporates both an environmental drop control strategy and a fixed-point auxiliary heating strategy.

[0041] Among them, the environmental sudden drop control strategy aims to cope with the rapid drop in external environmental temperature. Its core is prediction, decision-making, and advance execution. The process can be broken down into the following modules:

[0042] 1. Data preprocessing and feature extraction module:

[0043] Input: Raw temperature data stream T from the ambient temperature sensor env-raw (t);

[0044] Processing: a. Filtering: A first-order low-pass digital filter (such as an exponentially weighted moving average) is used to eliminate instantaneous noise, resulting in a smoothed ambient temperature T. env (t), the filter time constant is set to 1-2 minutes to preserve the true trend changes;

[0045] b. Calculate the rate of change: Within a continuous time window (e.g., 5 minutes), calculate the rate of change for T. env (t) is linearly fitted to obtain the average temperature change slope S within the window. env (Unit: ℃ / min);

[0046] c. Calculate the range of change: Record T within a fixed period (e.g., 30 minutes) in the past. env The difference ΔT between the highest value and the current value of (t) env ;

[0047] Output: Feature quantity S used for judgment env and ΔT env .

[0048] 2. Sudden Drop Detection Module:

[0049] Judgment logic: This is a multi-condition triggered logical judgment;

[0050] Condition A (Fast Startup): If S env <-S threshold (Slope threshold), which means that the current average descent slope exceeds the preset negative threshold (e.g., -0.05℃ / min, i.e. 3℃ / hour). This condition is sensitive to rapid cooling.

[0051] Condition B (cumulative amplitude): ΔT env >ΔT threshold (Amplitude threshold) means that the cumulative temperature drop over a period of time exceeds a preset threshold (e.g., 3°C). This condition prevents false triggering due to short-term fluctuations.

[0052] Triggering Decision: When conditions A and B are simultaneously met, the algorithm determines that a sudden drop in ambient temperature has occurred, immediately sets the sudden drop flag, and records the trigger time t. trigger Otherwise, clear the flag.

[0053] 3. Target Area Prediction and Thermodynamic Model Module:

[0054] Model input: Ambient temperature T at the moment of sudden drop triggering env (t trigger ), descending slope S env The current temperature T in each area of ​​the incubation chamber zone-i (t trigger (i=1,2,3…);

[0055] Simplified thermodynamic model: An empirical model based on experimental data, used to estimate the temperature response of different regions to changes in ambient temperature;

[0056] For the i-th cultivation and growth zone 101, its temperature change rate dT zone-i / dt and the rate of change of ambient temperature S env The thermal insulation performance coefficient K of this area and its environment i and the basic power P of the main heating element 301 base The relevant information can be simplified to:

[0057]

[0058] Where, α i It is the sensitivity coefficient of region i to ambient temperature (α value is the largest in the top region), β i It is the region's own thermal inertia coefficient, T set-i T is the target temperature of region i, γ is the influence coefficient of the main heating power, and T is the target temperature of region i. zone-i It is the real-time temperature of the cultivation and growth zone i;

[0059] Prediction calculation:

[0060] a. Assume that the ambient temperature will continue to rise at the current slope S for a period of time in the future. env Continued decline;

[0061] b. Using the simplified model described above, with t trigger Starting from the moment of sudden temperature drop triggering, perform short-term (e.g., 15-30 minutes) numerical integration or step prediction to calculate the future temperature curve T for each region i. zone-i-predicted (t);

[0062] c. Find the curve that first matches its preset alarm lower limit T among all prediction curves. alarm-i The area where the target temperature is 0.5-1℃ lower than the target temperature intersects with the target temperature is designated as the "estimated primary target cultivation and growth zone" (denoted as...). zone-risk ), and calculate the predicted "intersection time point" as (t cross-predicted ).

[0063] 4. Collaborative heating control command generation and execution module:

[0064] Decision input: zone-risk (Estimated primary target cultivation and growth area), t cross-predicted (Intersection time point), current temperature in each region, S env (Slope of average temperature change);

[0065] Control logic:

[0066] a. Movement command: Immediately send a command to the drive actuator of the auxiliary heating element 302 to drive the hot air generator to move to the position where it is in contact with the auxiliary heating element 302. zone-risk The corresponding physical location (e.g., the top layer corresponds to coordinates Z=70cm), this process occurs in (t) cross-predicted -t buffer This must be completed beforehand. buffer This provides a safety buffer period (e.g., 3-5 minutes), ensuring "early movement";

[0067] b. Dynamic power setting:

[0068] Power boost value ΔP of main heating element 301 main ΔP main =f main (S env , ΔT env For example, it can be set as ΔP. main =min(P main-max -P base , k1×|S env |+k2×ΔT env ), where k1 and k2 are empirical coefficients.

[0069] The starting power P of the auxiliary heating element 302 aux :P aux =f aux (S env , (T set-risk -T zone-risk (t))), the initial power is set based on the predicted severity, and subsequent power is based on zone-risk Real-time feedback is used for PID closed-loop regulation;

[0070] c. Coordinated Start-up: Upon receiving the "position" signal from the auxiliary heating element 302 and at time t <t cross-predicted At the same time, start commands are sent to the heating units of the main heating element 301 and the auxiliary heating element 302, and the calculated power parameters are written in.

[0071] d. Dwelling and Exit: Auxiliary heating element 302 in zone-risk Stay and work until the measured temperature T in the area. zone-risk Stable recovery to target value T set-risk It remains in this state for a period of time (e.g., 5 minutes), or until the ambient temperature stops dropping and begins to rise again; subsequently, the auxiliary heating element 302 stops heating and can return to the standby position or prepare to respond to other requests according to instructions.

[0072] The fixed-point auxiliary heating strategy is used to compensate for temperature differences caused by uneven static thermal fields in different areas during normal operation. Its core is "monitoring, judgment, and fixed-point compensation". The fixed-point auxiliary heating strategy is triggered only when the environmental sudden drop control strategy is not triggered and the temperature of any cultivation and growth zone 101 is detected to be lower than its preset threshold. The auxiliary heating element 302 is then moved to that zone and heating is started. The specific implementation process is as follows:

[0073] 1. Data Monitoring and Judgment Module:

[0074] Input: Real-time data T from contact temperature sensors within each of the 101 growth zones. zone-i (t);

[0075] Decision logic: Continuously loop to check each region i;

[0076] If T zone-i (t) < T set-i -ΔT offset T set-i Let ΔT be the target temperature for this region. offset If the allowable negative deviation is 0.5℃, then the area is determined to be... zone-needy (Auxiliary heating area required);

[0077] Priority judgment: This strategy is only executed when the "Environmental Sudden Decrease Control Strategy" is not activated (i.e., the "Sudden Decrease Flag" is false); if the sudden decrease strategy is activated, the fixed-point strategy is suspended to avoid control conflicts.

[0078] 2. Control command generation and execution module:

[0079] Decision input: zone-needy (Auxiliary heating zone required), temperature deviation in this zone ΔT=T set-i -T zone-i (t).

[0080] Control logic:

[0081] a. Movement Command: Generate a command to control the auxiliary heating element 302 to move to... zone-needy Corresponding position;

[0082] b. Power setting: Auxiliary heating power P aux-fix Proportional control is typically used for setting: P aux-fix = min(P aux-max ,Kp×ΔT), where Kp is a proportional coefficient (e.g., 20W / ℃), and a minimum starting power (e.g., 20W) is set.

[0083] c. Execution: After the auxiliary heating element 302 is in place, heating is started; at this time, the main heating element 301 maintains its current set power and does not perform coordinated boosting;

[0084] d. Closed-loop regulation and shutdown: During the heating process, T is continuously monitored. zone-needy (t), when T zone-needy (t)>=T set-i When this occurs, auxiliary heating is stopped; the auxiliary heating element 302 may remain in the vicinity of this position on standby, or return to an intermediate standby position to prepare to respond to the next possible demand.

[0085] The temperature control process of the rice seed cultivation device designed in this invention is as follows:

[0086] Step S100: After the system is powered on, the ambient temperature sensor and the contact temperature sensors in each cultivation area begin to continuously collect temperature data.

[0087] Step S200: The core algorithm of the control end performs real-time analysis on the ambient temperature data stream and calculates its rate of change and short-term change magnitude;

[0088] Judgment Branch 1 (satisfying the sudden drop condition): If the analysis results meet the "sudden drop" characteristics (e.g., rate > 3℃ / hour and amplitude > 4℃), then the process enters S300 predictive synergistic heating;

[0089] S301 Target Determination: Based on the direction of the sudden drop (usually overall cooling) and the box model, the algorithm determines the primary risk area as the seedling emergence area;

[0090] S302 Early Intervention: Immediately generates a command to drive the hot air generator 3021 to move to the top;

[0091] S303 Coordinated Execution: After the hot air generator 3021 is in place, it instructs the main and auxiliary heating elements to work synchronously according to the predetermined plan (such as the main heating element 301 increasing its power by 30% and the auxiliary heating element starting with 70% power).

[0092] Decision branch two (sudden drop condition not met): If the ambient temperature remains stable, the process enters the regular monitoring loop. The system continuously compares the real-time temperature of each cultivation zone with the target value;

[0093] If the temperature in all areas meets the standard, return to S100 for continued monitoring;

[0094] If the temperature in any area is below the threshold, the "fixed-point auxiliary heating" sub-process is executed: the auxiliary heating element 302 is driven to move to that area, and auxiliary heating is started until the temperature in that area reaches the standard.

[0095] Through the above scheme, the present invention realizes active real-time control of the temperature inside the chamber based on ambient temperature prediction.

[0096] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A rice seed cultivation device, characterized in that, include: The cultivation chamber, multiple cultivation and growth modules, temperature control module, and control terminal; Multiple cultivation and growth modules are arranged at intervals from top to bottom inside the cultivation box, dividing the internal space of the cultivation box into multiple independent cultivation and growth zones; The temperature control module includes a main heating element, an auxiliary heating element, and a temperature sensing element located at the bottom of the cultivation chamber. The auxiliary heating element includes a heating execution unit and a driving execution unit. The heating execution unit is movably located on one side of the cultivation chamber, and the driving execution unit is used to drive the heating execution unit to move along a preset path to directionally heat different cultivation and growth zones. The temperature sensing element is used to monitor the temperature in each cultivation and growth zone and the ambient temperature outside the cultivation chamber in real time. The side wall of the cultivation box is provided with a double-layer space, the auxiliary heating element is located in the double-layer space, and one side of the double-layer space is provided with a plurality of ventilation openings that are connected to each cultivation growth zone. The heating actuator is a hot air generator that is slidably disposed in the interlayer space, and the driving actuator drives the hot air generator to move linearly up and down along the interlayer space. The control terminal is communicatively connected to the main heating element, the auxiliary heating element, and the temperature sensing element, and has a built-in environmental sudden drop control strategy. The environmental temperature drop control strategy is as follows: when the temperature drop received by the control terminal exceeds the preset threshold, the primary growth zone most affected by this is predicted. Before the temperature in this zone actually drops to the target threshold, the auxiliary heating element is controlled to move to the predicted primary growth zone in advance, and the main heating element and the auxiliary heating element that has moved to the position are instructed to start synchronously to perform coordinated preheating intervention in this zone. The primary growth zone is the area most sensitive to sudden drops in ambient temperature, as predicted by the spatial thermal field distribution model of the cultivation chamber. When the control terminal performs temperature regulation, it calculates and sets the power boost value of the main heating element, the start-up power of the auxiliary heating element, and the estimated dwell time based on the predicted rate and magnitude of the sudden drop in ambient temperature, according to the thermodynamic model. The control terminal is also configured to: when the environmental drop control strategy is not triggered and the temperature of any cultivation and growth zone is detected to be lower than its preset threshold, trigger the fixed-point auxiliary heating strategy, control the auxiliary heating element to move to the zone and start heating.

2. The rice seed cultivation device according to claim 1, characterized in that, The drive actuator includes a servo motor and a lead screw connected to the output end of the servo motor. The lead screw is rotatably disposed in the interlayer space, and its outer side is threadedly connected to one side of the hot air generator.

3. The rice seed cultivation device according to claim 1, characterized in that, The temperature sensing device includes an ambient temperature sensor located on the outside of the incubator and a group of temperature sensors located in each incubation growth zone for multi-point monitoring of the temperature in that zone.

4. A temperature control method for rice seed cultivation, performed using the rice seed cultivation apparatus as described in any one of claims 1-3, characterized in that, Includes the following steps: S100, Data Acquisition: Collects ambient temperature data of the external environment of the incubator, as well as internal temperature data of each independent incubation and growth zone inside the incubator; S200, Sudden Drop Judgment: Analyze the real-time trend of ambient temperature data to determine whether the preset ambient temperature sudden drop conditions are met. If satisfied, proceed to step S300; S300, Predictive Co-heating: S301, Target Determination: Based on the trend of a sudden drop in ambient temperature, determine the risk-prone cultivation and growth area where the temperature will first deviate from the preset range. S302, Early Intervention: Before the internal temperature of the risk-predicted growth zone actually drops to its preset threshold, a displacement command is generated to drive the auxiliary heating element to move to the corresponding position in that zone. S303, Cooperative Execution: After the auxiliary heating element is in place, a heating command is generated, causing the main heating element and the auxiliary heating element to start simultaneously, and jointly heat the estimated risk cultivation and growth area.

5. The temperature control method for rice seed cultivation according to claim 4, characterized in that, In step S200, if the condition of sudden drop in ambient temperature is not met, the internal temperature data of each cultivation and growth zone is continuously compared with its preset target threshold. When any internal temperature data is lower than its threshold, the fixed-point auxiliary heating step is executed: the auxiliary heating element is driven to move to the cultivation and growth zone where the temperature does not meet the standard and heating is started.

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