A method for promoting rice growth by utilizing light source

Abstract

The present invention discloses a method for promoting rice growth using light sources. Following seed soaking, germination, and pre-sowing treatment, a light source is provided to manage and regulate the rice during its growth period, followed by harvesting. Rice growth management and regulation include spectral settings for both the vegetative and reproductive phases, light intensity and photoperiod control, and temperature, humidity, and CO2 concentration control. The technical solution of the present invention is expected to revolutionize rice breeding, significantly shortening the rice cultivation cycle, improving resource utilization efficiency, and promoting the sustainable development of agricultural production.

Description

Technical Field

[0001] The present invention relates to the field of biochemical regulation of accelerated rice growth by light conditions, and specifically to a method for promoting rice growth by utilizing light sources, especially a method for managing and regulating light intensity, photoperiod, temperature, humidity and CO2 concentration during the rice growth period. Background Art

[0002] In recent years, global environmental challenges such as climate change, acid rain, ozone layer depletion, and a sharp decline in biodiversity have become increasingly severe. These issues have had a significant impact on agricultural production. To reduce environmental impact and lower production costs, the demand for crop germplasm resources is increasing.

[0003] Rice is one of my country's most important food crops and plays a key role in ensuring food security. Thanks to advances in science and technology, particularly rice breeding, my country's rice yields have achieved two major leaps since the widespread adoption of dwarf rice breeding and hybrid rice. Consumer demand for rice varieties and rice products is increasingly diverse, but current rice breeding efficiency remains suboptimal and is unlikely to meet future demand. The long growing cycle of rice in open fields makes year-round cultivation difficult, resulting in a long rice breeding cycle and a bottleneck in rice breeding.

[0004] Rapid breeding technology is a new technology that has emerged in recent years. It promotes crop growth, flowering and maturity through comprehensive measures such as environmental regulation and growth control, thereby accelerating the crop generation process. It can shorten the breeding cycle and achieve multiple generations of breeding in one year. It is expected to significantly shorten the breeding period and improve breeding efficiency. Summary of the Invention

[0005] The present invention aims to provide a method for promoting rice growth using light sources. Indica and japonica rice crops grown according to the following method are grown and evaluated under optimal conditions by optimizing environmental conditions and management measures during the growth process. This includes seed soaking, germination, sowing, rice growth management and regulation, and harvesting. Specifically, a light spectrum specifically designed for accelerating rice growth during the growth period significantly shortens the cultivation cycle and maximizes the potential for accelerated growth. Compared to existing rice acceleration methods, this method has the advantages of simple steps, safety, environmental protection, and low cost.

[0006] A method for promoting rice growth using a light source, wherein the light source includes a spectrum with the following parameters:

[0007] The light intensity in the wavelength range of 425 nm - 475 nm was used as the reference light intensity, and the reference light intensity range was 500 -800 μmol / (m 2 s);

[0008] The light intensity in the wavelength range of 380 nm - 425 nm is 0.1 - 0.45 times the reference light intensity;

[0009] The light intensity in the wavelength range of 475 nm - 550 nm is 0.4 - 1 times the reference light intensity;

[0010] The light intensity in the wavelength range of 550 nm - 625 nm is 0.4 - 1 times the reference light intensity;

[0011] The light intensity in the wavelength range of 625 nm - 700 nm is 0.4 - 2.5 times the reference light intensity;

[0012] The wavelength range is 700 nm - 760 nm and the light intensity is 0.15 - 0.45 times the reference light intensity;

[0013] The above spectrum is used to irradiate rice during its growth period.

[0014] Further,

[0015] The rice growth period includes the vegetative growth period and the reproductive growth period. The vegetative growth period is the period from seed germination to the beginning of rice ear differentiation and is divided into four stages: seedling stage, transplanting stage, tillering stage, and jointing stage. The reproductive growth period is the period from the beginning of rice ear differentiation to maturity and is divided into four stages: booting stage, heading stage, flowering and pollination stage, and grain filling stage.

[0016] The photoperiod of the rice during the vegetative growth period is 18-22 hours of light per day and 2-4 hours of darkness per day; and the photoperiod during the reproductive growth period is 8-12 hours of light per day and 12-16 hours of darkness per day.

[0017] The distance between the light source and the rice in each period (vegetative growth period and reproductive growth period) is no more than 0.40 m.

[0018] The temperature during the rice growth period is controlled at 25°C - 29°C, and the humidity is controlled at 75% - 85%.

[0019] The CO2 concentration during the rice growth period is controlled at 800-1100 PPM.

[0020] The rice plants were watered once every three days during the vegetative growth period, with each group receiving 1-1.5 L of water, and each group had 4-6 plants. During the reproductive growth period, the rice plants were watered once every two days, with each group receiving 1-1.5 L of water, and each group had 4-6 plants.

[0021] Furthermore,

[0022] After the seed soaking, germination and pre-sowing treatment steps, the light source is set, and the light intensity, light cycle, temperature, humidity and CO2 concentration are managed and regulated during the rice growth period, and finally the rice is harvested.

[0023] The seed soaking process involves selecting healthy, intact, disease-free, and insect-free rice seeds; rinsing the seeds with clean water to remove surface impurities and residue; placing the washed seeds in a container and soaking them in warm water at 25-28°C for 24-36 hours. This helps promote water absorption and respiration in the seeds. During the soaking process, the soaking water should be replaced regularly to maintain clean water quality, allowing the seeds to fully absorb water and ventilate, thereby promoting germination.

[0024] The germination process involves soaking the rice seeds, removing the seeds, placing them in a mesh bag, wrapping them with a wet towel, and placing them in a 35-38°C oven; frequently opening the oven door to increase oxygen and ventilate the air, ensuring that the towel wrapping the seeds is always moist; when 85% of the seeds have sprouted, lowering the temperature of the rice seeds to 25-28°C to allow the sprouts to grow slowly, with the sprout length controlled within 2-3 mm; and checking the temperature to prevent the oven temperature controller from malfunctioning and causing damage to the seeds.

[0025] The sowing operation is to sow the selected rice seeds on the surface of the sterilized moist paddy soil; and then lightly cover it with a layer of paddy soil.

[0026] Harvesting begins with a maturity check. When rice reaches maturity, its color changes from green to golden yellow. Before harvesting, check the rice for maturity, ensuring that most of the grains have turned yellow and mature. Harvesting is done manually with scissors, cutting each grain individually. After harvesting, the rice needs to be air-dried in the open air or indoors for 2-3 days to reduce moisture content and prevent mold. Once dry, the rice is threshed to separate the grains from the husks. Finally, the rice is stored for future use.

[0027] The present invention has the following advantages and effects compared to the prior art:

[0028] The indica and japonica rice crops cultivated using the present method are grown under optimal conditions by optimizing environmental conditions and management measures throughout the growth process. This includes seed soaking, germination, sowing, rice growth management and regulation, and harvesting. Specifically, a spectrum specifically designed for accelerated rice growth significantly shortens the cultivation cycle and maximizes the potential for accelerated growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 for photos of ripe rice;

[0030] Figure 2 is the spectrum in Example 1;

[0031] Figure 3 is the spectrum in Example 2;

[0032] Figure 4 is the spectrum in Example 3;

[0033] Figure 5 is the spectrum in Example 4;

[0034] Figure 6 is the spectrum in Comparative Example 1;

[0035] Figure 7 This is the spectrum in Comparative Example 2. DETAILED DESCRIPTION

[0036] The present invention is further described below with reference to specific implementation cases. Those skilled in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention designed in the following cases are only part of the implementation cases of the present invention, not all of the embodiments. Therefore, based on the embodiments of the present invention, other implementation cases obtained by other technicians without making creative efforts should fall within the scope of protection of the present invention.

[0037] Unless otherwise specified, the raw materials used in the practice of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the practice of the present invention are all methods known to those skilled in the art.

[0038] Rice morphological index determination of the present invention:

[0039] The following tests were performed on all rice plants 10, 20, 30, 40, 50, 60, and 70 days after sowing the rice seeds:

[0040] (1) Plant height: Measure the plant height from the leaf tip to the base of the pseudostem using a ruler;

[0041] (2) Stem diameter: Use a vernier caliper to measure the base width of the pseudostem and the diameter of the main root;

[0042] The rice growth time index determination of the present invention:

[0043] Record the time required for the four stages of rice tillering, heading, ear formation, flowering, and maturity.

[0044] Example 1

[0045] 1 Experimental methods

[0046] (1) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours. Then, they were wrapped in a wet towel and germinated in a 37°C oven for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seedlings was controlled to be less than 3 mm. The germinated rice seeds were then sown on the surface of the sterilized, moist paddy soil on the seedling rack and lightly covered with a layer of paddy soil.

[0047] (2) Spectrum-adjustable plant growth lights were placed on top of the rice seedling rack, 0.4 m away from the rice plants, and the rice seedlings were raised in a flat pattern to ensure a uniform light field. The rice growth environment temperature was 27°C, the relative humidity was 80%, and the CO2 concentration was controlled at 900 PPM during the rice growth period. The rice plants were watered every three days during the vegetative growth stage, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the plants were watered every two days, with each group receiving 1-1.5 L of water. Each group had 4-6 plants.

[0048] (3) Set the experimental group as T1, and its growth spectrum is as follows Figure 2 shown.

[0049] The light intensity in the wavelength range of 425 nm - 475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0050] The light intensity in the wavelength range of 380 nm - 425 nm is 0.15 times the reference light intensity;

[0051] The light intensity in the wavelength range of 475 nm - 550 nm is 0.67 times the reference light intensity;

[0052] The light intensity in the wavelength range of 550 nm - 625 nm is 0.79 times the reference light intensity;

[0053] The light intensity in the wavelength range of 625 nm - 700 nm is 2.16 times the reference light intensity;

[0054] The wavelength range is 700 nm - 760 nm and the light intensity is 0.27 times the reference light intensity;

[0055] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0056] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0057] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0058] The plant height and stem diameter of the T1 group were tested:

[0059]

[0060] The time of tillering, heading, ear formation and flowering, and maturity of T1 group:

[0061]

[0062] The T1 group Xiang Zao Xian 45 flowered on the 53rd day and matured on the 75th day; Guang Hong San Hao flowered on the 82nd day and matured on the 104th day.

[0063] Example 2

[0064] 1 Experimental methods

[0065] (1) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours. Then, they were wrapped in a wet towel and germinated in a 37°C oven for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seedlings was controlled to be less than 3 mm. The germinated rice seeds were then sown on the surface of the sterilized, moist paddy soil on the seedling rack and lightly covered with a layer of paddy soil.

[0066] (2) Spectrum-adjustable plant growth lights were placed on top of the rice seedling rack, 0.4 m away from the rice plants, and the rice seedlings were raised in a flat pattern to ensure a uniform light field. The rice growth environment temperature was 27°C, the relative humidity was 80%, and the CO2 concentration was controlled at 900 PPM during the rice growth period. The rice plants were watered every three days during the vegetative growth stage, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the plants were watered every two days, with each group receiving 1-1.5 L of water. Each group had 4-6 plants.

[0067] (3) Set the experimental group as T2, and its growth spectrum is as follows Figure 3 shown.

[0068] The light intensity in the wavelength range of 425 nm to 475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0069] The light intensity in the wavelength range of 380 nm-425 nm is 0.1 times the reference light intensity;

[0070] The light intensity in the wavelength range of 475 nm - 550 nm is 0.57 times the reference light intensity;

[0071] The light intensity in the wavelength range of 550 nm - 625 nm is 0.64 times the reference light intensity;

[0072] The light intensity in the wavelength range of 625 nm - 700 nm is 0.78 times the reference light intensity;

[0073] The wavelength range is 700 nm - 760 nm and the light intensity is 0.21 times the reference light intensity;

[0074] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0075] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0076] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0077] The plant height and stem diameter of the T2 group were tested:

[0078]

[0079] The time of tillering, heading, ear formation and flowering, and maturity of the T2 group:

[0080]

[0081] The T2 group Xiang Zao Xian 45 bloomed on the 49th day and matured on the 71st day; Guang Hong San Hao bloomed on the 79th day and matured on the 101st day.

[0082] Example 3

[0083] 1 Experimental methods

[0084] (1) Arrange the spectrum-adjustable plant growth lamp on the top of the rice seedling rack, 0.4 m away from the rice, and grow the rice seedlings in a flat surface to make the light field uniform.

[0085] (2) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours, and then wrapped in a wet towel in a 37°C oven for germination for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seed buds was controlled within 3 mm. The germinated rice seeds were then sown on the surface of the sterilized and moist paddy soil and lightly covered with a layer of paddy soil. The temperature of the rice growth environment was 27°C, the relative humidity was 80%, and the CO2 concentration during the rice growth period was controlled at 900 PPM. During the vegetative reproductive stage, the rice was watered once every three days, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the rice was watered once every two days, with each group receiving 1-1.5 L of water.

[0086] (3) Set the experimental group as T3, and its growth spectrum is as follows Figure 4 shown.

[0087] The light intensity in the wavelength range of 425 nm - 475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0088] The light intensity in the wavelength range of 380 nm - 425 nm is 0.1 times the reference light intensity;

[0089] The light intensity in the wavelength range of 475 nm - 550 nm is 0.75 times the reference light intensity;

[0090] The light intensity in the wavelength range of 550 nm - 625 nm is 0.77 times the reference light intensity;

[0091] The light intensity in the wavelength range of 625 nm - 700 nm is 0.94 times the reference light intensity;

[0092] The wavelength range is 700 nm - 760 nm and the light intensity is 0.27 times the reference light intensity;

[0093] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0094] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0095] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0096] The plant height and stem diameter of the T3 group were tested:

[0097]

[0098] The time of tillering, heading, ear formation and flowering, and maturity of the T3 group:

[0099]

[0100] The T3 group Xiang Zao Xian 45 blooms on the 45th day and matures on the 67th day; Guang Hong San Hao blooms on the 75th day and matures on the 97th day.

[0101] Example 4

[0102] 1 Experimental methods

[0103] (1) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours. Then, they were wrapped in a wet towel and germinated in a 37°C oven for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seedlings was controlled to be less than 3 mm. The germinated rice seeds were then sown on the surface of the sterilized, moist paddy soil on the seedling rack and lightly covered with a layer of paddy soil.

[0104] (2) Spectrum-adjustable plant growth lights were placed on top of the rice seedling rack, 0.4 m away from the rice plants, and the rice seedlings were raised in a flat pattern to ensure a uniform light field. The rice growth environment temperature was 27°C, the relative humidity was 80%, and the CO2 concentration was controlled at 900 PPM during the rice growth period. The rice plants were watered every three days during the vegetative growth stage, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the plants were watered every two days, with each group receiving 1-1.5 L of water. Each group had 4-6 plants.

[0105] (3) Set the experimental group as T4, and its growth spectrum is as follows Figure 5 shown.

[0106] The light intensity in the wavelength range of 425 nm -475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0107] The light intensity in the wavelength range of 380 nm-425 nm is 0.1 times the reference light intensity;

[0108] The light intensity in the wavelength range of 475 nm - 550 nm is 0.51 times the reference light intensity;

[0109] The light intensity in the wavelength range of 550 nm - 625 nm is 0.64 times the reference light intensity;

[0110] The light intensity in the wavelength range of 625 nm - 700 nm is 0.79 times the reference light intensity;

[0111] The wavelength range is 700 nm - 760 nm and the light intensity is 0.21 times the reference light intensity;

[0112] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0113] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0114] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0115] The plant height and stem diameter of the T4 group were tested:

[0116]

[0117] The time of tillering, heading, ear formation and flowering, and maturity of T4 group:

[0118]

[0119] T4 group Xiang Zao Xian 45 blooms on the 41st day and matures on the 65th day; Guang Hong San blooms on the 71st day and matures on the 94th day.

[0120] Comparative Example 1

[0121] 1 Experimental methods

[0122] (1) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours. Then, they were wrapped in a wet towel and germinated in a 37°C oven for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seedlings was controlled to be less than 3 mm. The germinated rice seeds were then sown on the surface of the sterilized, moist paddy soil on the seedling rack and lightly covered with a layer of paddy soil.

[0123] (2) Spectrum-adjustable plant growth lights were placed on top of the rice seedling rack, 0.4 m away from the rice plants, and the rice seedlings were raised in a flat pattern to ensure a uniform light field. The rice growth environment temperature was 27°C, the relative humidity was 80%, and the CO2 concentration was controlled at 900 PPM during the rice growth period. The rice plants were watered every three days during the vegetative growth stage, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the plants were watered every two days, with each group receiving 1-1.5 L of water. Each group had 4-6 plants.

[0124] (3) Set the experimental group as T5, and its growth spectrum is as follows Figure 6 shown.

[0125] The light intensity in the wavelength range of 425 nm -475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0126] The light intensity in the wavelength range of 380 nm-425 nm is 0 times the reference light intensity;

[0127] The light intensity in the wavelength range of 475 nm - 550 nm is 0.54 times the reference light intensity;

[0128] The light intensity in the wavelength range of 550 nm - 625 nm is 0.51 times the reference light intensity;

[0129] The light intensity in the wavelength range of 625 nm - 700 nm is 0.35 times the reference light intensity;

[0130] The wavelength range is 700 nm - 760 nm and the light intensity is 0.08 times the reference light intensity;

[0131] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0132] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0133] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0134] The plant height and stem diameter of the T5 group were tested:

[0135]

[0136] The time of tillering, heading, ear formation and flowering, and maturity of T5 group:

[0137]

[0138] T5 group Xiang Zao Xian 45 blooms on the 89th day and matures on the 110th day; Guang Hong San blooms on the 97th day and matures on the 130th day.

[0139] Comparative Example 2

[0140] 1 Experimental methods

[0141] (1) After sterilization, the rice seeds were soaked in water at a temperature of about 25-28°C for 30 hours. Then, they were wrapped in a wet towel and germinated in a 37°C oven for 24 hours. When 85% of the seeds had broken through the thorax, the temperature of the rice seeds was lowered to about 28°C, and the length of the seedlings was controlled to be less than 3 mm. The germinated rice seeds were then sown on the surface of the sterilized, moist paddy soil on the seedling rack and lightly covered with a layer of paddy soil.

[0142] (2) Spectrum-adjustable plant growth lights were placed on top of the rice seedling rack, 0.4 m away from the rice plants, and the rice seedlings were raised in a flat pattern to ensure a uniform light field. The rice growth environment temperature was 27°C, the relative humidity was 80%, and the CO2 concentration was controlled at 900 PPM during the rice growth period. The rice plants were watered every three days during the vegetative growth stage, with each group receiving 1-1.5 L of water; during the reproductive growth stage, the plants were watered every two days, with each group receiving 1-1.5 L of water. Each group had 4-6 plants.

[0143] (3) Set the experimental group as T6, and its growth spectrum is as follows Figure 7 shown.

[0144] The light intensity in the wavelength range of 425 nm -475 nm was used as the reference light intensity, and the reference light intensity was 600 μmol / (m 2 s);

[0145] The light intensity in the wavelength range of 380 nm-425 nm is 0 times the reference light intensity;

[0146] The light intensity in the wavelength range of 475 nm - 550 nm is 0.08 times the reference light intensity;

[0147] The light intensity in the wavelength range of 550 nm - 625 nm is 0.08 times the reference light intensity;

[0148] The light intensity in the wavelength range of 625 nm - 700 nm is 0.79 times the reference light intensity;

[0149] The wavelength range is 700 nm - 760 nm and the light intensity is 0 times the reference light intensity;

[0150] The rice plants were irradiated with the above spectrum during their growth period. The photoperiod during the vegetative phase was 20 hours of light and 4 hours of darkness; during the reproductive phase, the photoperiod was 10 hours of light and 14 hours of darkness. All illumination sessions began at 6:00 AM.

[0151] (4) After 10, 20, 30, 40, 50, 60, and 70 days from rice seed sowing, all rice plants were tested for plant height and stem diameter.

[0152] (5) The full growth period of Xiangzaoxian 45 is 106 days, and the full growth period of Guanghong No. 3 is 127 days. When the rice tillers, heads, sets ears, flowers, and matures, the time required for these four stages is recorded.

[0153] The plant height and stem diameter of the T6 group were tested:

[0154]

[0155] The time of tillering, heading, ear formation and flowering, and maturity of T6 group:

[0156]

[0157] T6 Xiang Zao Xian 45 blooms on the 85th day and matures on the 105th day; Guang Hong San blooms on the 95th day and matures on the 125th day.

[0158] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A method for promoting rice growth using light sources, characterized in that: The light source includes a spectrum of the following parameters: The light intensity in the wavelength range of 425 nm - 475 nm is used as the reference light intensity, and the reference light intensity range is 500 - 800 μmol / (m 2 s); The light intensity in the wavelength range of 380 nm - 425 nm is 0.1 - 0.45 times the reference light intensity; The light intensity in the wavelength range of 475 nm - 550 nm is 0.4 - 1 times the reference light intensity; The light intensity in the wavelength range of 550 nm - 625 nm is 0.4 - 1 times the reference light intensity; The light intensity in the wavelength range of 625 nm - 700 nm is 0.4 - 2.5 times the reference light intensity; The wavelength range is 700 nm - 760 nm and the light intensity is 0.15 - 0.45 times the reference light intensity; The above spectrum is used to irradiate rice during its growth period; The photoperiod of the rice during the vegetative growth period is 18-22 hours of light per day and 2-4 hours of darkness per day; the photoperiod during the reproductive growth period is 8-12 hours of light per day and 12-16 hours of darkness per day; The distance between the light source and the rice is no more than 0.40 m.

2. The method according to claim 1, characterized in that The rice growth period includes: a vegetative growth period and a reproductive growth period; the vegetative growth period is the stage from seed germination to the beginning of rice ear differentiation, which is divided into four periods: seedling stage, transplanting stage, tillering stage, and jointing stage; the reproductive growth period is the stage from the beginning of rice ear differentiation to maturity, which is divided into four periods: booting stage, heading stage, flowering and pollination stage, and filling stage.

3. The method according to claim 1, characterized in that The temperature during the rice growth period is controlled at 25°C-29°C, and the humidity is controlled at 75%-85%.

4. The method according to claim 1, wherein The CO2 concentration during the rice growth period was controlled at 800-1100 PPM.

5. The method according to claim 1, wherein The rice was watered once every three days during the vegetative growth period, with each group receiving 1-1.5 L of water each time, and each group contained 4-6 rice plants; and was watered once every two days during the reproductive growth period, with each group receiving 1-1.5 L of water each time, and each group contained 4-6 rice plants.

6. The method according to claim 1, characterized in that After the seed soaking, germination and pre-sowing treatment steps, the light source is set, and the light intensity, light cycle, temperature, humidity and CO2 concentration are managed and regulated during the rice growth period, and finally the rice is harvested.

7. The method according to claim 6, characterized in that The soaking process comprises the following steps: selecting healthy, complete, disease-free and insect-free rice seeds; washing the rice seeds with clean water to remove surface impurities and residues; placing the washed seeds in a container and soaking them in warm water at 25-28°C for 24-36 hours; The germination process is as follows: after soaking the rice seeds, the seeds are fished out, placed in a gauze bag, wrapped with a wet towel, and placed in a 35-38°C oven; the oven door is frequently opened to increase oxygen and ventilation, ensuring that the towel wrapped around the seeds is always moist; when 85% of the seeds have broken through the breast, the temperature of the rice seeds is lowered to 25-28°C to allow the sprouts to grow slowly, and the length of the seed sprouts is controlled within 2-3 mm; The sowing operation is to sow the selected rice seeds on the surface of the sterilized moist paddy soil; and then lightly cover it with a layer of paddy soil.

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