Cultivation method for early heading and flowering of rice
Through technical means such as pretreatment of light-temperature sensitive rice varieties, intelligent seedling cultivation, multi-stage irrigation and sudden temperature rise at night, a gene regulatory network was formed, which solved the problem of delayed rice heading period and achieved the effects of early heading and high yield.
Patent Information
- Application Number
- CN202510858661.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2025-09-19
AI Technical Summary
Existing technologies make it difficult to accurately control the timing of rice heading and flowering, and are unable to effectively advance heading to avoid the impact of extreme weather and improve yield and quality.
By adopting light-temperature-sensitive rice variety pretreatment, smart greenhouse seedling cultivation, multi-stage irrigation, biostimulant spraying, night temperature surge and model-driven agronomic decision-making, dynamic cultivation measures are carried out in combination with real-time environmental data to form gene regulatory networks and hormone homeostasis.
The rice heading period was significantly advanced, the impact of extreme weather was reduced, the fruit set rate and yield were increased, and the quality of rice was ensured.
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Figure CN120660592A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of crop cultivation, and in particular to a cultivation method for premature heading and flowering of rice. Background Art
[0002] Rice is a globally important food crop, and its heading and flowering timing directly impacts its yield and quality. The speed of rice heading is closely related to temperature: higher temperatures lead to faster and more uniform heading. The optimum heading temperature is 25-35°C. Temperatures that are too low prolong the heading period, and the lower portion of the panicle cannot fully emerge, resulting in a neck. Temperatures exceeding 40°C also make heading difficult. The optimal relative humidity for flowering and fertilization is 70%-80%. Maintaining an appropriate water layer with shallow water increases interplant temperature, reduces humidity, and promotes faster flowering and better pollination. Sunny, warm, and breezy weather is most conducive to flowering, ensuring good pollination and a high fruit set rate. Excessive rain and low sunshine lead to poor pollen development and an increase in empty and barren grains.
[0003] Some rice-growing areas may face disasters such as high temperatures, low temperatures, typhoons, and floods during the late stages of rice growth, such as the grain filling and ripening stages. For example, late rice in southern double-crop rice areas that reach heading and flowering too late may be exposed to cold dew winds, resulting in reduced seed set. Early temperature drops in northern rice areas can affect grain plumpness. Early heading can advance the critical rice growth period and reduce the impact of extreme weather.
[0004] However, current traditional rice cultivation methods have certain limitations in dealing with these problems. It is difficult to accurately control the time of rice heading and flowering, and cannot effectively meet the demand for early rice heading and flowering in agricultural production to avoid disasters and increase yield and quality.
[0005] Therefore, there is an urgent need for a cultivation method that can effectively advance rice heading and flowering to solve the problems existing in the prior art. Summary of the Invention
[0006] The main purpose of the present invention is to provide a cultivation method for early rice heading and flowering, which can effectively solve the problems mentioned in the background technology.
[0007] To achieve the above object, the technical solution adopted by the present invention is: A cultivation method for premature rice heading and flowering comprises the following steps: S1. Variety screening and allelopathic substance pretreatment: Select light- and temperature-sensitive rice varieties and soak the seeds in a solution containing brassinolide and salicylic acid to accelerate germination; S2. High-density tillering seedling cultivation: Seedlings were grown in a smart greenhouse at a density of 40 holes / ㎡, with 14 hours of sunlight per day and supplemented with blue and red light. 0.008% coronatine was sprayed at the three-leaf stage. S3, three-stage pulse irrigation: after transplanting, implement daily cycle irrigation with cold water for 2 hours in the morning, natural water temperature at noon, and warm water for 2 hours in the evening for 10 days; S4. Biostimulants in combination with water stress: Drain the field to a soil moisture content of 40%-45% at the end of the period, spray 0.1 g / L of seaweed polysaccharide-zinc integrator and 10 μg / mL of flowering-inducing peptide OsFTIP1 on the leaves, and cycle three times of alternating dry and wet conditions. S5. Night temperature sudden rise pretreatment: Raise the canopy temperature to 30°C from 22:00 to 02:00 three days before spikelet differentiation for four nights. S6. Model-driven precision agronomic decision-making: Using the rice development dynamics model RDDMV2.0, we correlate leaf age index, accumulated temperature, and multispectral data to output fertilization / irrigation instructions. S7. Dynamic cultivation measure package execution: Based on real-time environmental data, intelligently combine biostimulant spraying, night temperature surge, or coronatine control modules.
[0008] Preferably, in S1, the brassinolide concentration is 0.4-0.6 μm, the salicylic acid concentration is 0.8-1.2 mm, the seed soaking temperature is 25° C., the soaking time is 12 h, and the germination is accelerated to a radicle length of ≤1 mm.
[0009] Preferably, in S2, the photon flux density of the blue and red light is 3:1, the spraying rate of coronatine is 30-40 mL / m2, and the air humidity is maintained at ≥80% within 12 hours after spraying.
[0010] Preferably, in S3, the morning cold water irrigation period is 8:00-10:00, the water temperature is 12°C, the evening warm water irrigation period is 18:00-20:00, the water temperature is 24°C, and the soil temperature change rate is ≤2°C / h.
[0011] Preferably, in S4, the molecular weight of the seaweed polysaccharide-zinc chelate is less than 5000 Da, the zinc content is ≥12%, and the soil moisture content during the dry-wet cycle fluctuates within a range of 40%-55%.
[0012] Preferably, in S5, the temperature sudden rise rate is 3-5°C / min, the air outlet of the hot air blower is 1.2-1.5m away from the canopy, and the horizontal temperature difference is ≤1°C.
[0013] Preferably, in S6, the input instructions of the RDDMv2.0 model include: real-time leaf age index (accuracy 0.1), accumulated temperature of the soil layer ≥10 cm (resolution 0.1°C·d).
[0014] Preferably, in S7, when the canopy temperature sensor detects ≥35°C for 2 hours, the combination of "coronatine control + evening warm water irrigation" is automatically triggered; when the photosynthetic active radiation is ≤200umol / ㎡ 2 ·s lasts for 3 days, triggering "biostimulant spraying + infrared supplement light 50umol / m 2 ·s”.
[0015] Preferably, in S3 to S7, IoT nodes are deployed in the field, the node spacing is ≤10m, and the data sampling frequency is ≥1 time / 5min.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention establishes a foundation for florigen expression through pretreatment with brassinolide and salicylic acid. Biostimulants synergize with the water-stress-induced flowering peptide OsFTIP1 to directly promote FT protein transport, forming a cascade amplification with the upregulation of the Hd3a gene caused by allelochemical pretreatment. A sudden rise in night temperature protects the meristem through OsHSP70 and advances the phase of the OsG gene, forming a complete gene regulatory network from seed to ear differentiation. Coronatine inhibits OsCCD1 to delay ABA degradation, synergizing with the ABA peak triggered by water stress to activate the OsSAPK6 signaling pathway.
[0017] 2. The present invention uses cold water irrigation to inhibit the circadian rhythm of IAA synthesis and warm water to promote ZR secretion, accurately regulating the conversion between nutritional and reproductive growth; while the dry-wet cycle amplifies the ABA signal, dynamic combination measures are used to offset high temperature stress in real time and maintain hormone homeostasis; periodic water stress and sudden rise in night temperature are used to form a "mild stress chain": the former triggers the flowering program through the ABA peak, and the latter protects the stress-induced differentiation of young spikelets through heat shock proteins. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0020] Example 1, as Figure 1 As shown, this embodiment provides a cultivation method for early rice heading and flowering, comprising the following steps: S1. Variety screening and allelopathic substance pretreatment: Select light- and temperature-sensitive rice varieties and soak the seeds in a solution containing brassinolide, salicylic acid, and 5 mM glutathione to accelerate germination. The concentration of brassinolide was 0.5 μm, the concentration of salicylic acid was 1.0 mM, the soaking temperature was 25°C, the soaking time was 12 h, and the germination time was until the radicle length was ≤1 mm; Glutathione is used as a reducing agent. After soaking, the seeds are placed in an oscillating incubator (25°C, 120 rpm) to accelerate penetration. After the seeds turn white, they are transferred to a dark environment for germination for 12 hours. Brassinolide was then used to activate the OsBZR1 transcription factor, and salicylic acid was used to induce the OsWRKY45 stress resistance pathway, thereby increasing the expression of the florigen gene Hd3a; at the same time, the germination rate and radicle growth synchronization rate were improved, and the greening period after transplanting was shortened.
[0021] S2. High-density tillering seedling cultivation: Seedlings were grown in a smart greenhouse at a density of 40 holes / ㎡, with 14 hours of sunlight per day and supplemented with blue and red light. 0.008% coronatine was sprayed at the three-leaf stage. The photon flux density of blue and red light is 3:1. The spray rate of coronatine is 30-40mL / ㎡. After spraying coronatine, a biodegradable water-retaining film (PVA material) is covered to maintain local humidity. The air humidity is maintained at ≥80% within 12 hours after spraying. This allows the tillering number to be controlled at 4-5 per plant. Meanwhile, coronatine inhibits OsCCD1 gene expression, reduces the degradation rate of endogenous ABA, and increases the tillering bud dormancy rate. The above-mentioned ABA is the abbreviation of abscisic acid. As a key plant hormone, it plays a core role in the regulation of rice heading and flowering.
[0022] S3, three-stage pulse irrigation: after transplanting, implement daily cycle irrigation with cold water for 2 hours in the morning, natural water temperature at noon, and warm water for 2 hours in the evening for 10 days; The morning cold water irrigation period is 8:00-10:00, the water temperature is 12℃, the evening warm water irrigation period is 18:00-20:00, the water temperature is 24℃, and the soil temperature change rate is ≤2℃ / h; An array of temperature sensors is buried in the soil (depth 10 / 20 / 30 cm) to dynamically adjust the water injection rate; Low temperature in the morning (12°C) reduces the activity of IAA synthase OsYUCCA by 60%, inhibiting vegetative growth, while warm water in the evening (24°C) promotes the secretion of zeatin riboside (ZR) by the root system, increasing the cell division rate of the young ear primordium. The above-mentioned IAA is one of the most important natural auxins in the body, with the core functions of promoting vegetative growth, inhibiting reproductive transformation, and responding to environmental signals.
[0023] S4. Biostimulants synergistically applied to water stress: Drain the field to a soil moisture content of 40%-45% at the end of the period, spray 0.1 g / L of seaweed polysaccharide-zinc integrator and 10 μg / mL of flowering-inducing peptide OsFTIP1 on the leaves, and cycle the fields three times. The molecular weight of seaweed polysaccharide-zinc chelate is less than 5000Da, the zinc content is ≥12%, and the soil moisture content fluctuation range of dry-wet cycle is 40%-55%; Seaweed polysaccharide-zinc chelate is prepared by enzymatically hydrolyzing sodium alginate to a molecular weight of 3800 Da, followed by chelation with zinc sulfate (zinc content 15.2%); Furthermore, water stress caused the ABA peak to reach 120 ng / gFW (40 ng for the control), activating the OsSAPK6 signaling pathway. OsFTIP1 promoted the transport of FT protein to the shoot apex, leading to the early differentiation of spikelet primordium. The Da is used to represent the relative mass unit of a molecule or an atom.
[0024] S5. Night temperature sudden rise pretreatment: Raise the canopy temperature to 30°C from 22:00 to 02:00 three days before spikelet differentiation for four nights. The temperature rise rate is 3-5℃ / min, the air outlet of the hot air blower is 1.2-1.5m away from the canopy, the air speed is 8m / s, the coverage angle is 45°, the canopy temperature uniformity is CV≤3%, and the horizontal temperature difference is ≤1℃; At the same time, infrared thermal imagers are used for real-time monitoring and PID algorithm for dynamic temperature adjustment; The above PID algorithm is used to dynamically adjust the temperature to ensure canopy temperature uniformity (CV ≤ 3%) and horizontal temperature difference ≤ 1°C. The formula is as follows:
[0025] Where u(t) represents the output value of the PID controller, which corresponds to the power or wind speed adjustment of the hot air blower (for example, for adjusting the outlet wind speed to 8m / s and 45° inclination coverage), e(t) represents the difference between the set point and the actual value, and K p Represents the proportional gain, which amplifies the impact of the current error and is used to quickly respond to temperature deviations, K i Indicates the integral gain, which eliminates the accumulation of historical errors (such as temperature drift) and ensures long-term stability. K d Indicates the gain, suppresses future error changes (such as temperature rise rate 3-5℃ / min), reduces overshoot, represents the integration variable.
[0026] The D algorithm dynamically adjusts the operation of the hot air blower (e.g., outlet distance 1.3 m, wind speed 8 m / s) based on the real-time temperature data from the infrared thermal imager to maintain the canopy temperature at 30°C.
[0027] Furthermore, it can induce the accumulation of OsHSP70 at 30℃ at night, protect the meristem cells of the young panicle, advance the expression phase of the photoperiod gene OsG, and reduce the coefficient of variation of the panicle differentiation process. S6. Model-driven precision agronomic decision-making: Using the rice development dynamics model RDDMV2.0, we correlate leaf age index, accumulated temperature, and multispectral data to output fertilization / irrigation instructions. The input instructions of the RDDMv2.0 model include: real-time leaf age index (accuracy 0.1), accumulated temperature in the soil layer ≥10cm (resolution 0.1℃·d). The output instructions of the RDDMv2.0 model include: accumulated temperature ≥850℃·d + leaf age index ≥11.5, triggering a sudden rise in night temperature, and a sudden drop in NDVI (Normalized Difference Vegetation Index) ≥15%, then activating biostimulant spraying; The above-mentioned RDDMv2.0 model integrates simulation of physiological developmental processes with data-driven decision-making; The accumulated temperature-leaf age coupling model is used for developmental stage prediction. The rice development process mainly depends on thermal time (accumulated temperature) and morphological indicators (leaf age). The formula involved is:
[0028] Where D is the development progress (0-1, 1 means the heading stage is complete), GDD is the effective accumulated temperature (≥10℃ soil temperature), unit is ℃·d, and the calculation method is:
[0029] T max ,T min Indicates the daily maximum / minimum ground temperature (°C), T base represents the lower limit temperature of rice development (usually 10℃), LAI represents the leaf age index, α, β, and γ represent specific parameters, which are calibrated through historical data.
[0030] When the decision is triggered, when D ≥ D target (For example, the heading threshold D target ) = 0.8), triggering the action, that is:
[0031] Startup night temperature rises suddenly; In practice target It may be mapped to a more intuitive threshold (such as accumulated temperature 850℃·d + leaf age 11.5).
[0032] Secondly, NDVI sudden drop detection uses a time series anomaly detection algorithm, and the specific formula involved is:
[0033] Trigger rule: If ΔNDVI ≤ -15% (lasting for 2-3 days), it is considered a stress event and biostimulant spraying is activated; At the same time, the sliding window statistical test (such as CUSUM control chart) is used to reduce false positives. The relevant formula is:
[0034] Where St represents the cumulative deviation, k represents the allowable fluctuation threshold (such as 5%), and an alarm is triggered when St>λ (such as 15%).
[0035] Therefore, the overall coordination can shorten the response speed to water stress.
[0036] S7, Dynamic Cultivation Measure Package Execution: Based on real-time environmental data, intelligently combine biostimulant spraying, night temperature surge, or coronatine control modules; When the canopy temperature sensor detects a temperature of ≥35°C for 2 hours, the "coronatine control + evening warm water irrigation" combination is automatically triggered. That is, the coronatine spraying system is linked to the drip irrigation belt and 24°C warm water is injected simultaneously. When the photosynthetic active radiation is ≤200umol / ㎡ 2 ·s lasts for 3 days, triggering "biostimulant spraying + infrared supplement light 50umol / m 2 ·s", that is, the infrared supplementary light (wavelength 850nm) forms 50umol / ㎡·s light compensation in the canopy, and the biostimulant adds a photosensitive pigment activator (0.01% cryptochrome CRY1).
[0037] This can increase the fruiting rate on high temperature days (>35℃), and even under continuous rainy conditions, the photosynthetic rate can still maintain 12μmolCO2 / m 2 ·s; thus, the heading date can be advanced.
[0038] During the operation of this embodiment, the two-line hybrid rice "Lingliangyou 268" (sensitivity coefficient of accumulated temperature at heading ≥ 0.85) was selected.
[0039] During the operation of this embodiment, the brassinolide (activating OsBZR1) and salicylic acid (inducing OsWRKY45) pretreatments in S1 allelochemical pretreatments laid the foundation for florigen expression; S4 biostimulants synergized with the flowering-inducing peptide OsFTIP1 under water stress to directly promote FT protein transport, forming a cascade amplification with the upregulation of the Hd3a gene under S1 allelochemical pretreatment; the sudden rise in night temperature in S5 protected the meristem through OsHSP70 and advanced the phase of the OsG gene, forming a differentiation from seed to ear. The complete gene regulatory network of the plant is constructed. Coronatine (S2) is used to inhibit OsCCD1 and delay ABA degradation, which synergistically activates the OsSAPK6 signaling pathway with the ABA peak (120 ng / gFW) triggered by water stress (S4). Meanwhile, cold water irrigation (S3) inhibits IAA synthesis, while warm water (S3) promotes the circadian rhythm of ZR secretion, precisely regulating the transition between vegetative and reproductive growth. While dry-wet cycling (S4) amplifies ABA signals, dynamic combination measures (S7) (such as coronatine plus warm water irrigation) provide real-time offset to high temperature stress and maintain hormone homeostasis. Periodic water stress (soil moisture content 40%-55%) at S4 and sudden night temperature rise (30°C / 4h) at S5 constitute a "mild stress chain": the former triggers the flowering program through the ABA peak, while the latter protects stress-induced panicle differentiation through heat shock proteins; Through the coordinated cooperation of various steps, the physiological signal pathways and environmental stress responses are precisely regulated, the vegetative growth period is systematically compressed and the reproductive development process is accelerated, ultimately achieving a significant advancement of the heading period.
[0040] Example 2: Based on Example 1, this example applies the above cultivation method to a main double-season rice producing area in a certain place.
[0041] The early rice in this area often encounters "late spring cold" (average temperature 15.2℃) during its growing period, which leads to delayed heading and differentiation of young panicles. The heading period is 7-10 days later than the theoretical value. The soil in this area is clay paddy soil, which has strong water holding capacity but slow temperature rise.
[0042] The specific implementation steps are as follows: S1 preprocessing Seed soaking solution formula: 0.5μm brassinolide + 1.0mm salicylic acid + 5mm glutathione Infiltrate at 25℃ with shaking for 12 hours, and then refine the buds in the dark, with a budding uniformity of 95% (radicle length 0.8mm). S2 high-density seedling cultivation: greenhouse density 40 holes / ㎡, red and blue light (3:1) supplementary lighting up to 14h / day.
[0043] Spray 0.008% coronatine (35mL / ㎡) at the three-leaf stage, cover with PVA film for moisture retention, and the score stabilizes at 4.3 per plant.
[0044] S3 pulse irrigation (after transplanting) Morning irrigation: 8:00-10:00 with 12℃ well water (the soil temperature is reduced to 14℃ at 10cm).
[0045] Late irrigation: Irrigation with 24°C solar-heated water from 18:00 to 20:00 can increase root ZR secretion by 2.1 times.
[0046] S4 Water stress synergy: At the end of tillering, the field was drained until the soil moisture content was 42%, and then sprayed with seaweed polysaccharide-zinc chelate (0.1 g / L, molecular weight 3800 Da) and OsFTIP1 flowering peptide (10 μg / mL); After three dry-wet cycles, the peak ABA content in leaves reached 118 ng / gFW.
[0047] S5: Sudden temperature rise at night: Infrared thermal imager linked to PID temperature control system (set Kp=1.2, Ki=0.3, Kd=0.8); canopy maintained at 30℃ from 22:00 to 02:00 (CV=2.1%), OsHSP70 expression increased 3 times.
[0048] S6 intelligent decision triggering: During the operation of the RDDMv2.0 model, the following monitoring items were detected: accumulated temperature of 863°C·d+leaf age index of 11.7, triggering the automatic start of S5 night temperature rise; NDVI suddenly dropped by 16.3% (for 3 days), triggering S4 biostimulant supplementary spraying.
[0049] S7 dynamically responds to abnormal weather conditions: On a high-temperature day (36°C for 4 hours), it automatically implemented "coronatine + 24°C warm water irrigation," maintaining a fruit set rate of 82%. On a rainy day (PAR = 185 μmol / ㎡·s), it activated 850nm infrared supplemental lighting, maintaining a photosynthetic rate of 12.3 μmolCO2 / m 2 ·s.
[0050] Compared with the untreated rice ears, the treated rice ears emerged earlier and avoided the peak of the plum rain season.
[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A method for cultivating rice to accelerate heading and flowering, characterized in that: The following steps are involved: S1. Variety screening and allelopathic substances Pretreatment: Select light- and temperature-sensitive rice varieties and soak the seeds in a solution containing brassinolide and salicylic acid to accelerate germination; S2. High-density tillering seedling cultivation: Seedlings were grown in a smart greenhouse at a density of 40 holes / ㎡, with 14 hours of sunlight per day and supplemented with blue and red light. 0.008% coronatine was sprayed at the three-leaf stage. S3, three-stage pulse irrigation: after transplanting, implement daily cycle irrigation with cold water for 2 hours in the morning, natural water temperature at noon, and warm water for 2 hours in the evening for 10 days; S4. Biostimulants in combination with water stress: Drain the field to a soil moisture content of 40%-45% at the end of the period, spray 0.1 g / L of seaweed polysaccharide-zinc integrator and 10 μg / mL of flowering-inducing peptide OsFTIP1 on the leaves, and cycle three times of alternating dry and wet conditions. S5. Night temperature sudden rise pretreatment: Raise the canopy temperature to 30°C from 22:00 to 02:00 three days before spikelet differentiation for four nights. S6. Model-driven precision agronomic decision-making: Using the rice development dynamics model RDDMV2.0, we correlate leaf age index, accumulated temperature, and multispectral data to output fertilization / irrigation instructions. S7. Dynamic cultivation measure package execution: Based on real-time environmental data, intelligently combine biostimulant spraying, night temperature surge, or coronatine control modules.
2. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S1, the brassinolide concentration is 0.4-0.6 μm, the salicylic acid concentration is 0.8-1.2 mm, the seed soaking temperature is 25° C., the soaking time is 12 h, and the germination is accelerated to a radicle length of ≤1 mm.
3. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S2, the photon flux density of the blue and red light is 3:1, the spraying rate of coronatine is 30-40 mL / m2, and the air humidity is maintained at ≥80% within 12 hours after spraying.
4. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S3, the morning cold water irrigation period is 8:00-10:00, the water temperature is 12°C, the evening warm water irrigation period is 18:00-20:00, the water temperature is 24°C, and the soil temperature change rate is ≤2°C / h.
5. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S4, the molecular weight of the seaweed polysaccharide-zinc chelate is less than 5000 Da, the zinc content is ≥12%, and the soil moisture content fluctuation range of the dry-wet cycle is 40%-55%.
6. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S5, the temperature rise rate is 3-5°C / min, the air outlet of the hot air blower is 1.2-1.5m away from the canopy, and the horizontal temperature difference is ≤1°C.
7. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S6, the input instructions of the RDDMv2.0 model include: real-time leaf age index (accuracy 0.1), accumulated temperature of the soil layer ≥10 cm (resolution 0.1°C·d).
8. The method for cultivating rice to accelerate heading and flowering according to claim 1, wherein: In S7, when the canopy temperature sensor detects a temperature of 35°C or higher for two consecutive hours, the "coronatine control + evening warm water irrigation" combination is automatically triggered. When the photosynthetically active radiation is ≤200 μmol / ㎡·s for three consecutive days, the "biostimulant spraying + infrared supplemental lighting 50 μmol / ㎡·s" combination is triggered.