A fluorescent material-based LED plant lighting luminaire and a method of using the same

Abstract

This invention discloses a fluorescent material-based LED plant lighting fixture and its application method. The fluorescent material is composed of the following components: BaSi2O2N2:xEu 2+ The value of x ranges from 0.01 to 0.05; Y3Al3Ga2O 12 :yCe 3+ The value of y ranges from 0.02 to 0.1; CaAlSiN3:zEu 2+ The value of z ranges from 0.001 to 0.03; Sc t Ga 1.96‑t O3:0.04Cr 3+ The value of t ranges from 0.001 to 0.5; the fluorescent material, under excitation by a 450nm blue LED chip, has a red / far-red light ratio of 2~3:1 and a red / blue light ratio of 1~6:1. The lamps of this application offer better cost-effectiveness and stability, eliminating the need for expensive light-emitting chips and high-precision splicing processes. The fluorescent material raw materials are readily available and have low doping levels, reducing preparation costs by more than 30%. They are temperature and humidity resistant, with a service life ≥8000h, light intensity and spectral deviation ≤5%, and no drift phenomenon. The breeding system is more standardized and efficient, with fixed operating procedures and strong breeding repeatability; it promotes earlier heading and flowering in rice, significantly shortening the entire rice growth cycle without affecting rice growth performance, providing a new approach for accelerated rice breeding.

Description

Technical Field

[0001] This invention relates to a fluorescent material-based LED plant lighting fixture and its application method, belonging to the field of rapid rice breeding technology. Background Technology

[0002] As my country's most important food crop, rice's breeding efficiency directly impacts national food security. Indoor hydroponic cultivation technology, with its advantages of fully controllable environment, no soil pollution, short breeding cycle, and ease of large-scale management, has become the mainstream direction for rapid rice breeding. Among many environmental factors, light is the core element regulating rice photosynthesis and photomorphogenesis. Its light quality ratio (especially the ratio of red to far-red light), luminescence stability, and the precision of light intensity directly determine the efficiency of hydroponics. Meanwhile, temperature and hydroponic nutrient solution, as synergistic factors, together with light, constitute the decisive environmental basis for rice growth.

[0003] Current technologies mostly employ LED light sources with different red-blue light ratios to regulate the rice growth cycle. While these methods have shown some effectiveness, they are insufficient in shortening the cycle, and most still rely on substrate cultivation. Recent studies have found that far-red light can significantly regulate crop development and the growth cycle by inducing phytochrome configurational conversion. However, in the current field of crop LED breeding, technologies for precise far-red light regulation are rarely applied. Furthermore, existing LED lights mostly use conventional chip-based structures, which have the following prominent drawbacks: First, high manufacturing and usage costs; chips of different wavelengths are expensive, and the splicing process is complex and requires high precision, resulting in high equipment investment and maintenance costs. Second, short lifespan; poor contact at chip splicing points; severe light decay under constant temperature and humidity conditions; and poor luminous stability; inconsistent light decay rates between chips can easily lead to spectral ratio shifts, especially during the critical stages from rice tillering to heading, making it difficult to stably maintain the required red / far-red light ratio and affecting the accuracy of light regulation.

[0004] Meanwhile, existing indoor hydroponic rice cultivation technologies generally lack standardized and coordinated design for light source performance, graded nutrient solution systems, and indoor temperature and humidity parameters. Most cultivation systems do not set precise light intensities (e.g., 800 μmol·m⁻¹) based on the photosynthetic characteristics of rice. -2 ·s -1 Furthermore, the red / far-red light ratio during key growth stages has not been optimized for different growth stages, resulting in poor compatibility between light, temperature, and cultivation environments, making it difficult to fully leverage the system advantages of indoor hydroponic breeding. In addition, the growth cycle of rice from germination to heading and flowering under current technology is still relatively long (about 88 days under natural conditions), and breeding efficiency needs to be further improved. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a fluorescent material-based LED plant lighting fixture that can be used to accelerate rice growth without affecting rice growth performance.

[0006] Technical solution: The fluorescent material-based LED plant lighting fixture of the present invention, wherein the fluorescent material is composed of the following components: BaSi2O2N2: xEu 2+ The value of x ranges from 0.01 to 0.05; Y3Al3Ga2O 12 yCe 3+ The value of y ranges from 0.02 to 0.1; CaAlSiN3: zEu 2+ The value of z ranges from 0.001 to 0.03; Sc t Ga 1.96-t O3: 0.04Cr 3+ The value of t ranges from 0.001 to 0.5; The fluorescent material, when excited by a 450nm blue LED chip, has a red / far-red light ratio of 2~3:1 and a red / blue light ratio of 1~6:1.

[0007] Furthermore, the encapsulation step of the lamp includes: mixing the fluorescent material and the adhesive evenly, controlling the viscosity of the mixture to be 500~900mPa·s, and applying it to the blue LED chip.

[0008] Furthermore, the adhesive is composed of a binder and a curing agent in a mass ratio of 1:10.

[0009] Furthermore, the CaAlSiN3: zEu 2+ The preferred values ​​for z are 0.005, 0.015, or 0.02; Sc t Ga 1.96-t O3:0.04Cr 3+ The preferred t is 0.3 or 0.5; BaSi2O2N2:xEu 2+ The preferred value of x is 0.01 or 0.02, Y3Al3Ga2O 12 :yCe 3+ The preferred value for y is 0.06 or 0.08.

[0010] The method for accelerating rice growth according to the present invention includes the following steps: (1) Disinfect and germinate rice seeds; (2) After the rice seedlings emerge, place them under the fluorescent material-based LED plant lighting fixtures mentioned above for seedling cultivation. Cultivate them in clean water. When the rice root system is 5-6cm long, transplant them into the hydroponic trough of the cultivation rack and cultivate them in liquid nutrient solution until the end of the seedling stage. During this stage, the day / night light cycle is 14 / 10h, the day / night temperature is 30℃ / 25℃, and the air humidity is 70%. (3) The day / night light cycle during the tillering-heading and flowering period was 10 / 14h; the day / night temperature during the tillering period was 33℃ / 28℃ and the air humidity was 70%; the day / night temperature during the heading and flowering period was 30℃ / 25℃ and the air humidity was 60%; liquid nutrient solution was used for cultivation, and liquid nutrient solution was sprayed on the rice leaves every 7 days.

[0011] Further, the disinfection steps described in step (1) are as follows: disinfect with 75% ethanol for 30 seconds, disinfect with 0.1% mercuric chloride for 10 minutes, and then rinse with sterile water 3 to 5 times.

[0012] Furthermore, the illumination distance of the fluorescent material-based LED plant lighting fixture described in step (2) is 30-100 cm, and the light intensity is 100–800 μmol·m⁻¹. -2 ·s -1 .

[0013] Furthermore, the liquid nutrient solution stock solution is composed of the following components: Liquid nutrient solution one: Component 1: 251.8 g / L Ca(NO3)2·4H2O, 161.5 g / L KNO3, 47.9 g / L NH4H2PO4, 144.8 g / L MgSO4·7H2O, 35.1 g / L (NH4)2SO4, 56.12 g / L EDTA-FeNa, 0.568 g / L Na2SiO3·9H2O; Component 2: 0.99 g / L MnCl2·7H2O, 1.79 g / L H3BO3, 1.24 g / L (NH4)6·MO7O 24 ·4H2O, 1.21g / L ZnSO4, 0.518 g / L CuSO4; Liquid nutrient solution II: Component 1: 371.2 g / L Ca(NO3)2·4H2O, 240.1 g / L KNO3, 62.27 g / L NH4H2PO4, 215.2 g / L MgSO4·7H2O, 51.21 g / L (NH4)2SO4, 55.99 g / L EDTA-FeNa, 0.901 g / L Na2SiO3·9H2O; Component 2: 0.99 g / L MnCl2·7H2O, 1.86 g / L H3BO3, 1.31 g / L (NH4)6·MO7O 24 ·4H2O, 1.20 g / L ZnSO4, 0.518 g / L CuSO4; Liquid nutrient solution three: Component 1: 1.52 g / L CH4N2O, 1 g / L Ca(H2PO4)2·H2O, 1.5 g / L KH2PO4; Component 2: 0.05 g / L MnCl2·7H2O, 0.1 g / L H3BO3, 0.05 g / L (NH4)6·MO7O 24 ·4H2O, 0.2 g / L ZnSO4, 0.05 g / L CuSO4.

[0014] Furthermore, the liquid nutrient solution stock solution is used after being diluted 1000 times.

[0015] Furthermore, the hydroponic tank described in step (2) contains a circulating water tank to circulate the liquid nutrient solution for 2 hours and then stop for 1 hour.

[0016] This invention uses a special fluorescent material to replace the conventional chip-based structure as its core design concept. By precisely controlling the composition ratio of fluorescent materials (barium silicon oxynitride, yttrium aluminum gallium oxide, etc.) and the doping amount of activating ions, LED lamps (including models with key ratios of R / FR=2:1 and R / FR=3:1) can be manufactured, which can stably output 800 μmol·m -2 ·s -1 Light intensity; a matching graded hydroponic nutrient solution system (specifically for seedling stage / tillering-heading stage / foliar spraying) and precise temperature and humidity parameters in the indoor growth chamber (such as 33℃ / 28℃ during the tillering stage and 30℃ / 25℃ during the heading stage) to achieve synergistic regulation of "light quality-nutrient-environment", accelerate the tillering and heading process, and shorten the breeding cycle.

[0017] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: The lamps of this application are more cost-effective and stable, eliminating the need for expensive light-emitting chips and high-precision splicing processes. The fluorescent material raw materials are readily available and have low doping levels, reducing preparation costs by more than 30%. They are temperature and humidity resistant, with a service life of ≥8000h (50% longer than conventional chip LED lamps), and light intensity and spectral deviation ≤5%, with no drift phenomenon. The breeding system is more standardized and efficient, integrating a unified solution of "fluorescent material lighting + graded nutrient solution + precise temperature and humidity," with fixed operating procedures and strong breeding repeatability. It promotes earlier heading and flowering of rice, significantly shortening the entire growth cycle of rice without affecting its growth performance, providing a new approach for accelerated rice breeding. Attached Figure Description

[0018] Figure 1 This is a spectral distribution diagram of light processing for different lamps.

[0019] Figure 2 To investigate the effect of different lighting fixtures on the heading time of Jinxiangyu 686 rice.

[0020] Figure 3 To investigate the effects of different lighting fixtures on the entire growth period of Jinxiangyu 686 rice.

[0021] Figure 4 To investigate the effect of different lighting fixtures on the tiller number of Jinxiangyu 686 rice, the statistical time periods were 21 days and 42 days, respectively.

[0022] Figure 5 To investigate the effect of different lighting fixtures on the plant height of *Jinxiangyu 686*, the statistical time periods were 21 days and 42 days, respectively.

[0023] Figure 6 The effect of different lighting fixtures on the root length of *Jinxiangyu 686* was investigated, with statistical periods of 21 days and 42 days.

[0024] Figure 7 These are morphological photos of Jinxiangyu 686 seedlings after 21 days of growth, taken using different lighting fixtures. Detailed Implementation

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0026] Example

[0027] This embodiment uses the japonica rice variety "Jinxiangyu 686" as the research material and employs a hydroponic method with a light intensity of 800 μmol·m⁻¹. -2 ·s -1 Under specific lighting conditions, light quality treatment is applied to hydroponic rice; information on the lighting fixtures (T1~9) is as follows: (1) Lamp 1: CaAlSiN3:0.005Eu 2+ (1.5g), under the excitation of a 450nm blue LED chip, the red / far-red light ratio is 3:1, the red / blue ratio is 3:1, making it a red-blue type LED lamp; (2) Lamp 2: Red / far-red light ratio = 3.2:1, red / blue ratio = 3:1, is a red and blue LED lamp (chip emitter); (3) Lamp 3: containing BaSi2O2N2: 0.02Eu 2+ (0.06g), Y3Al3Ga2O 12 0.06Ce 3+ (0.5g), CaAlSiN3:0.02Eu 2+ (0.15g), when excited by a 450nm blue LED chip, has a red / far-red light ratio of 3:1 and a red-blue light ratio of 3:1, making it a white light type lamp; (4) Lamp 4: Contains only CaAlSiN3:0.02Eu 2+ 2g of phosphor, when excited by a 450nm blue LED chip, produces a red / far-red light ratio of 2:1, making it a red-blue light type lamp; (5) Lamp 5: Red / far-red light ratio = 2:1, red-blue light ratio = 3:1, is a red-blue light type lamp (chip emission); (6) Lamp 6: Contains BaSi2O2N2: 0.02Eu 2+ (0.08g), Y3Al3Ga2O 12 0.06Ce 3+ (0.5g), CaAlSiN3:0.02Eu 2+ (0.09g), Sc 0.5 Ga 1.46 O3:0.04Cr 3+ (0.3g), when excited by a 450nm blue LED chip, has a red / far-red light ratio of 2:1 and a red / blue light ratio of 3:1, making it a white LED lamp; (7) Lamp 7: containing BaSi2O2N2: 0.02Eu 2+ (0.05g), Y3Al3Ga2O 12 0.06Ce 3+ (0.5g), CaAlSiN3:0.02Eu 2+ (0.2g), Sc 0.5 Ga 1.46 O3:0.04Cr 3+(0.3g), under the excitation of a 450nm blue LED chip, the red / far-red light ratio is 4:1 and the red / blue light ratio is 1:1, making it a white LED lamp; (8) Lamp fixture 8: containing BaSi2O2N2: 0.02Eu 2+ (0.08g), Y3Al3Ga2O 12 0.06Ce 3+ (0.5g), CaAlSiN3:0.02Eu 2+ (1.0g), Sc 0.5 Ga 1.46 O3:0.04Cr 3+ (0.2g), under the excitation of a 450nm blue LED chip, the red / far-red light ratio is 5:1 and the red / blue light ratio is 3:1, making it a white LED lamp; (9) Light fixture 9: containing BaSi2O2N2: 0.02Eu 2+ (0.08g), Y3Al3Ga2O 12 0.06Ce 3+ (0.5g), CaAlSiN3:0.02Eu 2+ (2.0 g), Sc 0.5 Ga 1.46 O3:0.04Cr 3+ (0.2g), when excited by a 450nm blue LED chip, has a red / far-red light ratio of 8:1 and a red / blue light ratio of 6:1, making it a white LED lamp.

[0028] Phosphor lamp encapsulation: A combination of silicone A (adhesive) and silicone B (curing agent) is used for encapsulation. 0.3g of silicone A and 3g of silicone B are mixed evenly with the phosphor material. The viscosity after mixing is controlled at 700 mPa·s. The phosphor material mixed with the adhesive is firmly bonded to the blue LED chip, preventing phosphor detachment and powdering in the indoor growth chamber environment. Simultaneously, the adhesive should be chosen to avoid chemical reactions with the phosphor material, ensuring long-term stable luminescence of the device under day / night temperatures of 30℃ / 25℃~33℃ / 28℃, with a service life ≥8000h.

[0029] The specific steps involved in rice cultivation are as follows: (1) Dark soaking and germination: Jinxiangyu 686 rice seeds were disinfected by 75% ethanol for 30 seconds and 0.1% mercuric chloride for 10 minutes, followed by rinsing with sterile water 3-5 times. After disinfection, the seeds were soaked in clean water at 30℃ in the dark for 5 hours. After soaking, the seeds were spread out on a gauze pad and moistened, and germination was continued for 24 hours until the seeds showed white sprouts. (2) Seedling raising - Seedling stage: Place the high-quality seeds with white sprouts in a 96-well plate hydroponic box with alternating rows, and place them under LED light with corresponding spectrum ratio fluorescent material base, with an irradiation distance of . Culture in water for 2 days. When the rice root length is 5-6cm, use planting baskets and planting cotton to transplant them into the cultivation rack hydroponic trough (including a circulating water tank, circulating the liquid nutrient solution for 2 hours and stopping for 1 hour). Use liquid nutrient solution one (pH=5.5-6.0, EC=1.5-1.8) to cultivate until the end of the seedling stage; during this stage, the day / night light cycle is 14 / 10h, the day / night temperature is 30℃ / 25℃, and the air humidity is 70%; (3) Tillering-heading and flowering period: During the tillering period, the day / night light cycle is 10 / 14h; the day / night temperature is 33℃ / 28℃, and the air humidity is 70%. During the heading and flowering period, the day / night light cycle is 10 / 14h; the day / night temperature is 30℃ / 25℃, and the air humidity is 60%. The rice is cultured with liquid nutrient solution II (pH=5.5-6.0, EC=2.5-3.0), and nutrient solution III is sprayed on the rice leaves every 7 days. (4) Spectral detection: A spectroradiometer (PS-300, Apogee Instruments Inc., Logan, UT, USA) was used to detect the spectral distribution to ensure accurate light intensity and R / FR ratio.

[0030] The nutrient solution stock solution comprises the following ingredients (diluted 1000 times before use): First component: 251.8 g / L Ca(NO3)2·4H2O, 161.5 g / L KNO3, 47.9 g / L NH4H2PO4, 144.8 g / L MgSO4·7H2O, 35.1 g / L (NH4)2SO4, 56.12 g / L EDTA-FeNa, 0.568 g / L Na2SiO3·9H2O; Second component: 0.99 g / L MnCl2·7H2O, 1.79 g / L H3BO3, 1.24 g / L (NH4)6·MO7O 24 ·4H2O, 1.21g / L ZnSO4, 0.518 g / L CuSO4.

[0031] The second nutrient solution stock solution comprises the following ingredients (diluted 1000 times before use): First component: 371.2 g / L Ca(NO3)2·4H2O, 240.1 g / L KNO3, 62.27 g / L NH4H2PO4, 215.2 g / L MgSO4·7H2O, 51.21 g / L (NH4)2SO4, 55.99 g / L EDTA-FeNa, 0.901 g / L Na2SiO3·9H2O; Second component: 0.99 g / L MnCl2·7H2O, 1.86 g / L H3BO3, 1.31 g / L (NH4)6·MO7O 24 ·4H2O, 1.20 g / L ZnSO4, 0.518 g / L CuSO4.

[0032] The nutrient solution stock solution comprises the following ingredients (diluted 1000 times before use): First component: 1.52 g / L CH4N2O, 1 g / L Ca(H2PO4)2·H2O, 1.5 g / L KH2PO4; Second component: 0.05 g / L MnCl2·7H2O, 0.1 g / L H3BO3, 0.05 g / L (NH4)6·MO7O 24 ·4H2O, 0.2 g / L ZnSO4, 0.05 g / L CuSO4.

[0033] Figure 1 The spectral distribution diagrams for each lamp show that the spectral width of the special fluorescent material excited by the 450nm blue LED chip is wider than that excited by the chip.

[0034] Table 1. Rice germination-heading and flowering cycle under different lighting conditions.

[0035] Table 1 shows the number of days in the rice germination-heading-flowering growth cycle under the same lighting conditions. According to... Figure 2 A and Figure 3 As shown in Figure A, under the same light ratio conditions, lamp 6 is more effective in shortening the growth cycle of Jinxiangyu 686, indicating that a broader light spectrum is more conducive to the rapid growth of rice. Simultaneously, the heading time is also shorter than with other lamps, indicating that under 450nm blue LED chip excitation, a red / far-red light ratio of 2:1 and a red / blue light ratio of 3:1 are most conducive to promoting rice heading and flowering and shortening the growth cycle.

[0036] Furthermore, based on the type of fluorescent material used in luminaire 6, luminaires with different proportions of fluorescent materials were designed, namely luminaire 7, luminaire 8, and luminaire 9. For example... Figure 2 B and Figure 3 As shown in B, under different ratios, lamp 6 is most effective in promoting rice heading and flowering and shortening the growth cycle. Under natural light, the entire growth cycle of Jinxiangyu 686 is 148.8 days. Under indoor illumination with lamp 6, the entire growth cycle of Jinxiangyu is shortened to 72 days, demonstrating a significant effect. Figure 4 As shown, the number of tillers was counted at 21 days and 42 days respectively. At 21 days, light fixture 6 produced the most tillers in rice. At 42 days, light fixture 6 produced more tillers than light fixtures 7, 8, and 9. Figure 5 As shown, the height of rice plants under different lighting conditions was statistically analyzed at 21 and 42 days, with relatively small overall differences; Figure 6 As shown, the root length of rice was statistically analyzed under different lamps after 21 and 42 days, respectively. The results showed that lamp 6 was most conducive to rice root growth. In summary, lamp 6 shortened the remaining cycle without reducing the growth performance of rice, and can be used for rapid rice growth.

Claims

1. A phosphor-based LED plant lighting luminaire, characterized by, The fluorescent material is composed of the following components: BaSi2O2N2: xEu 2+ The value of x ranges from 0.01 to 0.05; Y3Al3Ga2O 12 yCe 3+ The value of y ranges from 0.02 to 0.1; CaAlSiN3: zEu 2+ The value of z ranges from 0.001 to 0.03; Sc t Ga 1.96-t O3: 0.04Cr 3+ The value of t ranges from 0.001 to 0.5; The fluorescent material, when excited by a 450nm blue LED chip, has a red / far-red light ratio of 2~3:1 and a red / blue light ratio of 1~6:

1.

2. The phosphor-based LED plant lighting luminaire of claim 1, wherein, The encapsulation steps of the lamp include: mixing fluorescent material and adhesive evenly, controlling the viscosity of the mixture to be 500~900mPa·s, and then applying it to the blue LED chip.

3. The phosphor-based LED plant lighting fixture of claim 2, wherein, The adhesive consists of a binder and a curing agent in a mass ratio of 1:

10.

4. The phosphor-based LED plant lighting luminaire of claim 1, wherein, The CaAlSiN3:zEu 2+ The preferred values ​​for z are 0.005, 0.015, or 0.02; Sc t Ga 1.96-t O3: 0.04Cr 3+ The preferred t is 0.3 or 0.5; BaSi2O2N2:xEu 2+ The preferred value of x is 0.01 or 0.02, Y3Al3Ga2O 12 yCe 3+ The preferred value for y is 0.06 or 0.

08.

5. A method of accelerating the growth of rice, characterized by, Includes the following steps: (1) Disinfect and germinate rice seeds; (2) After the seedlings emerge, place them under the fluorescent material-based LED plant lighting fixture as described in any one of claims 1 to 4 for seedling cultivation. Cultivate them in water. When the rice root system is 5-6 cm long, transplant them into the hydroponic trough of the cultivation rack and cultivate them in liquid nutrient solution until the end of the seedling stage. During this stage, the day / night light cycle is 14 / 10h, the day / night temperature is 30℃ / 25℃, and the air humidity is 70%. (3) The day / night light cycle during the tillering-heading and flowering period was 10 / 14h; the day / night temperature during the tillering period was 33℃ / 28℃ and the air humidity was 70%; the day / night temperature during the heading and flowering period was 30℃ / 25℃ and the air humidity was 60%; liquid nutrient solution was used for cultivation, and liquid nutrient solution was sprayed on the rice leaves every 7 days.

6. The method for accelerating the growth of rice according to claim 5, wherein, The disinfection steps described in step (1) are: disinfect with 75% ethanol for 30 seconds, disinfect with 0.1% mercuric chloride for 10 minutes, and then rinse with sterile water 3 to 5 times.

7. The method for accelerating the growth of rice according to claim 5, wherein, The illumination distance of the fluorescent material-based LED plant lighting fixtures described in step (2) is 30-100 cm, and the light intensity is 100-800 μmol·m⁻². -2 ·s -1 .

8. The method for accelerating rice growth according to claim 5, characterized in that, The liquid nutrient solution mother liquor consists of the following components composition: Liquid nutrient solution one: Component 1: 251.8 g / L Ca(NO3)2·4H2O, 161.5 g / L KNO3, 47.9 g / L NH4H2PO4, 144.8 g / L MgSO4·7H2O, 35.1 g / L (NH4)2SO4, 56.12 g / L EDTA-FeNa, 0.568 g / L Na2SiO3·9H2O; Component 2: 0.99 g / L MnCl2·7H2O, 1.79 g / L H3BO3, 1.24 g / L (NH4)6·MO7O 24 ·4H2O, 1.21g / L ZnSO4, 0.518 g / L CuSO4; Liquid nutrient solution II: Component 1: 371.2 g / L Ca(NO3)2·4H2O, 240.1 g / L KNO3, 62.27 g / L NH4H2PO4, 215.2 g / L MgSO4·7H2O, 51.21 g / L (NH4)2SO4, 55.99 g / L EDTA-FeNa, 0.901 g / L Na2SiO3·9H2O; Component 2: 0.99 g / L MnCl2·7H2O, 1.86 g / L H3BO3, 1.31 g / L (NH4)6·MO7O 24 ·4H2O, 1.20 g / L ZnSO4, 0.518 g / L CuSO4; Liquid nutrient solution three: Component 1: 1.52 g / L CH4N2O, 1 g / L Ca(H2PO4)2·H2O, 1.5 g / L KH2PO4; Component 2: 0.05 g / L MnCl2·7H2O, 0.1 g / L H3BO3, 0.05 g / L (NH4)6·MO7O 24 ·4H2O, 0.2 g / LZnSO4, 0.05 g / L CuSO4.

9. The method for accelerating the growth of rice according to claim 8, wherein, The liquid nutrient solution stock solution is used after being diluted 1000 times.

10. The method for accelerating the growth of rice according to claim 5, wherein, The hydroponic tank described in step (2) contains a circulating water tank to circulate the liquid nutrient solution for 2 hours and then stop for 1 hour.

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