A method for controlling light during the cross-latitude transplantation of subtropical plants

Abstract

The present invention provides a method for controlling light during the cross-latitude transplantation of subtropical plants, belonging to the technical field of cross-latitude transplantation of plants. The method for controlling light during the cross-latitude transplantation of subtropical plants includes: determining the light parameters of the native place of the subtropical plants, including light intensity and light cycle; comparing the light parameters of the transplantation place of the subtropical plants; determining the adjustment value of the light parameters according to the comparison result; setting the initial light parameters of the light controller according to the adjustment value; transplanting the subtropical plants into a new environment equipped with a light controller; adjusting the light intensity and light cycle of the light controller according to the plant growth index; and gradually adjusting the light intensity and light cycle to the natural light conditions of the transplantation place. The technical solution of the present invention solves the technical problems that the prior art cannot adjust the light intensity and light cycle according to the actual needs of plants and cannot achieve precise control of the light conditions at different growth stages.

Description

Technical Field

[0001] The present invention belongs to the technical field of cross-latitude transplantation of plants, and specifically relates to a method for controlling light during cross-latitude transplantation of subtropical plants. Background Art

[0002] With global warming, some tropical and subtropical plants are gradually spreading to higher latitudes. However, since these plants are native to low-latitude regions and have long adapted to the warm climate and sufficient light conditions in these regions, directly transplanting them to regions with higher latitudes will affect the growth of the plants due to differences in light conditions.

[0003] Currently, when cross-latitude transplanting tropical and subtropical plants, a constant-temperature greenhouse is mainly used to maintain their growth environment. This method can enable the plants to grow normally in regions with higher latitudes by setting appropriate temperature conditions. However, the differences in light conditions still exist, mainly manifested as:

[0004] 1. The light intensity in high-latitude regions is significantly lower than that in subtropical regions, and plants cannot obtain sufficient light energy for photosynthesis.

[0005] 2. The day length in high-latitude regions is significantly shortened in winter, affecting the normal photoperiod of plants.

[0006] These differences in light conditions severely restrict the growth quality and yield of subtropical plants in high-latitude regions. If supplementary light irradiation cannot be provided, many subtropical plants cannot accumulate sufficient nutrient reserves during the short growing season in summer, resulting in wintering failure.

[0007] Currently, when cross-latitude transplanting subtropical plants, effective light compensation and regulation measures have not been adopted. The prior art cannot adjust the light intensity and light cycle according to the actual needs of plants, and cannot achieve precise control of light conditions at different growth stages. This limits the successful transplantation and breeding of many economically valuable plants and their high-yield performance in the new environment. Summary of the Invention

[0008] In view of this, the present invention provides a method for controlling light during cross-latitude transplantation of subtropical plants, which can solve the technical problems that the prior art cannot adjust the light intensity and light cycle according to the actual needs of plants and cannot achieve precise control of light conditions at different growth stages.

[0009] The present invention is implemented as follows:

[0010] The present invention provides a method for controlling light during cross-latitude transplantation of subtropical plants, which includes the following steps:

[0011] S10. Determine the light parameters of the native place of the subtropical plant, including light intensity and light cycle;

[0012] S20. Compare the light parameters of the transplanted subtropical plants' location.

[0013] S30. Determine the adjustment value of the light parameters according to the comparison results.

[0014] S40. Set the initial light parameters of the light controller according to the adjustment value.

[0015] S50. Transplant the subtropical plants to the new environment equipped with a light controller.

[0016] S60. Adjust the light intensity and light cycle of the light controller according to the plant growth index.

[0017] S70. Gradually adjust the light intensity and light cycle to the natural light conditions of the transplanted location.

[0018] Based on the above technical solution, an illumination control method for cross-latitude transplantation of subtropical plants according to the present invention can be further improved as follows:

[0019] Wherein, the plant growth index is the difference between the current growth degree of the plant and the standard growth degree of the same kind of plants in the subtropical region during the same growth period; the standard growth degree is represented by the average area of the orthographic projections of the four vertical surfaces of the plant.

[0020] Wherein, the step S10 includes:

[0021] Obtain the historical climate data of the subtropical region, including monthly average temperature, precipitation, and sunshine hours, and determine the location of the original habitat of the subtropical plants.

[0022] Select multiple sample collection points in the original habitat of the subtropical plants. At each collection point, install a light intensity sensor and a recording device, and continuously record the light intensity change data for 1 year.

[0023] Analyze the light intensity change curves of each collection point for 1 year, and calculate the annual average light intensity and monthly average light intensity.

[0024] Integrate the light intensity data of each collection point, and calculate the annual average light intensity and monthly average light intensity of each month in the original habitat of the subtropical plants.

[0025] Query the literature on plant physiology and ecology to determine the light cycle change rule in the original habitat of the subtropical plants, that is, the change curve of the daytime light time and the nighttime dark time.

[0026] Integrate the above-obtained data to determine the annual average light intensity, monthly average light intensity, and light cycle change curve in the original habitat of the subtropical plants.

[0027] Wherein, the step S20 includes:

[0028] Obtain the geographical location information of the transplantation site and determine the latitude range where it is located;

[0029] Obtain the climate data of the latitude range where the transplantation site is located;

[0030] Set up multiple collection points at the transplantation site. Each collection point is equipped with a light intensity sensor and a recording device to record the light intensity change data for one year;

[0031] Analyze the light intensity change curves of each collection point and calculate the annual average light intensity and monthly average light intensity;

[0032] Integrate the light intensity data of each collection point to determine the annual average light intensity and monthly average light intensity of the transplantation site;

[0033] Query the light duration data during the growth period of the plant to determine the variation law of the light cycle at the transplantation site;

[0034] Compare the light parameters of the transplantation site with those of the native place of the subtropical plant and analyze the differences in light intensity and light cycle.

[0035] Among them, the step S30 includes:

[0036] Compare the monthly average light intensity of the native place of the subtropical plant and the transplantation site, and calculate the light intensity difference value for each month;

[0037] Compare the light cycles of the native place of the subtropical plant and the transplantation site, and calculate the difference values of the light duration during the day and at night;

[0038] Integrate the light intensity difference value and the light duration difference value, and calculate the adjustment value of the light amount to be increased or decreased for each month based on the light conditions of the native place;

[0039] Based on the growth cycle of the plant, determine the light requirements at different growth stages and set the light intensity adjustment coefficients required for each growth stage;

[0040] Combine the above light amount adjustment value and light intensity adjustment coefficient to obtain the specific light intensity enhancement or weakening values of the light controller in different months and growth stages;

[0041] According to the difference value of the light duration during the day and at night, calculate the adjustment value of the light duration to be extended or shortened in different months.

[0042] Among them, the step S40 includes:

[0043] Select an LED light source that can adjust the light intensity and light duration as the light source of the light controller;

[0044] Set the output spectral range of the light controller and select a suitable spectrum according to the photosynthetic characteristics of subtropical plants;

[0045] Input the monthly light intensity adjustment value and light duration adjustment value calculated in step S30 into the controller;

[0046] Write a light control execution program to adjust the output light intensity and lighting time of the LED light source according to the monthly and time change rules;

[0047] Connect the light intensity sensor to the controller feedback system to monitor the light intensity in real time and make timely adjustments;

[0048] Set the night light conditions to provide the minimum light intensity required for plant growth.

[0049] Among them, the step S50 includes:

[0050] Select seeds or spikelets of subtropical plants with good growth conditions and no pests and diseases for transplantation;

[0051] Prepare a plant growth control box that regulates light, temperature, humidity, and soil nutrient conditions;

[0052] Inoculate the plant seeds or spikelets into the carriers prepared in advance in the box;

[0053] Place the growth box in an environment with a light controller and connect the light control system;

[0054] Gradually adjust the light intensity and light duration in the growth box to enable the plants to adapt to the light environment;

[0055] Turn on the temperature and humidity control system of the growth box to provide the most suitable temperature and humidity conditions;

[0056] Supplement nutrients and water.

[0057] Among them, the step S60 includes:

[0058] Set time nodes for several different growth stages and evaluate the plant growth situation at each node;

[0059] At each node, measure the average area of the orthographic projection of the four vertical faces of the plant as the growth index;

[0060] Compare the measured growth index with the standard growth curve to analyze the growth status;

[0061] If the growth index is lower than the standard value, increase the light intensity adjustment coefficient for this growth stage;

[0062] If the growth index is higher than the standard value, decrease the light intensity adjustment coefficient for this growth stage;

[0063] Recalculate the output light intensity of the light controller according to the adjusted light intensity coefficient;

[0064] Dynamically adjust the light intensity according to the growth response and light requirements of the plants.

[0065] Among them, the step S70 includes:

[0066] Query the natural light intensity and light time data of different months at the transplantation site;

[0067] Design a step-by-step transition plan for light intensity and light time, with the adjustment amplitude not exceeding 10% per month;

[0068] Start implementing the transition plan in the second year after transplantation, and adjust the parameters of the light controller month by month;

[0069] Monitor the growth response of the plants to light changes. If there are adverse reactions, suspend the adjustment amplitude;

[0070] When the parameters are adjusted to 80% of the natural light level at the transplantation site, maintain the parameters stable for 2 months;

[0071] After that, continue to adjust to 90% and 100% of the natural light level, and maintain each level for 2 months;

[0072] Finally, the light conditions reach the natural light level at the transplantation site, and the transition is completed.

[0073] Compared with the prior art, the beneficial effect of a light control method for subtropical plant cross-latitude transplantation provided by the present invention is: The present invention provides a light control method for subtropical plant cross-latitude transplantation. This method can accurately obtain the light parameters of the original place and the transplantation place of subtropical plants, and determine the light compensation plan for different growth stages according to the light differences between the two places. In each growth stage after transplantation, the present invention uses a precise light regulation system to monitor the growth status of plants in real time, and dynamically adjusts the light intensity and light cycle to meet the photosynthetic needs of plants. It solves the technical problems that the prior art cannot adjust the light intensity and light cycle according to the actual needs of plants, and cannot achieve precise control of light conditions in different growth stages. Brief Description of the Drawings

[0074] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0075] Figure 1Flow chart of the method provided by the present invention; Detailed implementation manners

[0076] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0077] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0078] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

[0080] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0081] As Figure 1 shown, it is a flow chart of a light control method for transplanting subtropical plants across latitudes provided by the present invention. The method includes the following steps:

[0082] S10. Determine the light parameters of the native place of the subtropical plant, including light intensity and light cycle;

[0083] S20. Compare the light parameters of the subtropical plant transplantation site;

[0084] S30. Determine the adjustment value of the light parameters according to the comparison result;

[0085] S40. Set the initial light parameters of the light controller according to the adjustment value;

[0086] S50. Transplant the subtropical plants into a new environment equipped with a light controller;

[0087] S60. Adjust the light intensity and light cycle of the light controller according to the plant growth index;

[0088] S70. Gradually adjust the light intensity and light cycle to the natural light conditions of the transplantation site.

[0089] Wherein, in the above technical solution, the plant growth index shown is the difference between the current growth length of the plant and the standard growth length of the same type of plant in the subtropics during the same growth period; the standard growth length is represented by the average area of the orthographic projections of the four vertical surfaces of the plant.

[0090] The following describes in detail the specific implementation of each step of this method:

[0091] S10. Determine the light parameters of the subtropical plant's native place, including the specific implementation of light intensity and light cycle:

[0092] 1) Consult the climate data such as the monthly average temperature, precipitation, sunshine hours, etc. in the subtropical region over the years to determine the location of the subtropical plant's native place.

[0093] 2) Select multiple sample collection points in the subtropical plant's native place, set light intensity sensors and recording devices at each collection point, and continuously record the light intensity change data for 1 year.

[0094] 3) Analyze the light intensity change curves of each collection point for 1 year, and calculate the annual average light intensity and monthly average light intensity.

[0095] 4) Integrate the light intensity data of each collection point to calculate the annual average light intensity and the monthly average light intensity of each month in the subtropical plant's native place.

[0096] 5) Query the literature on plant physiology and ecology to determine the light cycle change rule of the subtropical plant's native place, that is, the change curve of the daytime light time and the nighttime dark time.

[0097] 6) Integrate the data obtained in steps 4) and 5) to determine the annual average light intensity, monthly average light intensity and light cycle change curve of the subtropical plant's native place.

[0098] By implementing this step, the light parameters of the native habitat of subtropical plants can be accurately obtained, providing a basis for subsequent light condition control.

[0099] S20. Specific implementation method for comparing the light parameters of the transplantation site of subtropical plants:

[0100] 1) Query the geographical location information of the transplantation site to determine the latitude range where it is located.

[0101] 2) Consult the climate data of the latitude range where the transplantation site is located to obtain information such as the annual average temperature, precipitation, sunshine hours, etc.

[0102] 3) Set multiple collection points at the transplantation site. Each collection point is equipped with a light intensity sensor and a recording device to record the light intensity change data for one year.

[0103] 4) Analyze the light intensity change curves of each collection point, and calculate the annual average light intensity and monthly average light intensity.

[0104] 5) Integrate the light intensity data of each collection point to determine the annual average light intensity and monthly average light intensity of the transplantation site.

[0105] 6) Query the light time data during the plant growth period to determine the light cycle change rule of the transplantation site.

[0106] 7) Compare the light parameters of the transplantation site with those of the native habitat of subtropical plants, and analyze the differences in light intensity and light cycle.

[0107] By implementing this step, the light condition parameters of the transplantation site can be accurately obtained and compared with the light conditions of the native habitat, providing a basis for subsequent light compensation.

[0108] S30. Specific implementation method for determining the adjustment value of light parameters according to the comparison result:

[0109] 1) Compare the monthly average light intensity of the native habitat and the transplantation site of subtropical plants, and calculate the light intensity difference for each month.

[0110] 2) Compare the light cycles of the native habitat and the transplantation site of subtropical plants, and calculate the differences in daylight and night-time light hours.

[0111] 3) Integrate the light intensity difference and the light time difference, and calculate the adjustment value of the light amount to be increased or decreased for each month based on the light conditions of the native habitat.

[0112] 4) Based on the plant growth cycle, determine the light requirements at different growth stages, and set the light intensity adjustment coefficients required for each growth stage.

[0113] 5) Combine the above light intensity adjustment values and light intensity adjustment coefficients to obtain the specific light intensity enhancement or weakening values of the light controller in different months and growth stages.

[0114] 6) Calculate the adjustment values for extending or shortening the light duration in different months based on the difference in light duration between day and night.

[0115] Through the calculations in this step, precise light intensity adjustment values and light duration adjustment values can be provided for the setting of the light controller.

[0116] S40. Specific implementation method for setting the initial light parameters of the light controller according to the adjustment values:

[0117] 1) Select an LED light source with adjustable light intensity and light duration as the light source of the light controller.

[0118] 2) Set the output spectral range of the light controller and select a suitable spectrum according to the photosynthetic characteristics of subtropical plants.

[0119] 3) Input the monthly light intensity adjustment values and light duration adjustment values calculated in step S30 into the controller.

[0120] 4) Write a light control execution program to adjust the output light intensity and lighting time of the LED light source according to the monthly and time change rules.

[0121] 5) Connect the light intensity sensor to the controller feedback system to monitor the light intensity in real time and make timely adjustments.

[0122] 6) Set the night light conditions to provide the minimum light intensity required for plant growth.

[0123] 7) Test the light control system and adjust the parameters to make the light conditions meet the set requirements.

[0124] Through the implementation of this step, set the output light intensity and time mode of the light controller according to the calculated light parameters, so that the light conditions reach the state required for plant growth.

[0125] S50. Specific implementation method for transplanting subtropical plants to a new environment equipped with a light controller:

[0126] 1) Select healthy subtropical plant seeds or seedlings without pests and diseases for transplantation.

[0127] 2) Prepare a plant growth control box that includes conditions for regulating light, temperature and humidity, soil nutrients, etc.

[0128] 3) Inoculate the plant seeds or seedlings into the carriers prepared in advance in the box.

[0129] 4) Place the growth chamber in an environment with a light controller and connect the light control system.

[0130] 5) Gradually adjust the light intensity and light duration inside the growth chamber to enable the plants to adapt to the light environment.

[0131] 6) Turn on the temperature and humidity control system of the growth chamber to provide the most suitable temperature and humidity conditions.

[0132] 7) Provide measures such as supplementary nutrition and watering to promote plant growth.

[0133] Through the operations of this step, transplanting of subtropical plants is completed under environmental conditions with precise control, providing guarantee for subsequent production.

[0134] S60. Specific implementation method for adjusting the light intensity and light cycle of the light controller according to the plant growth index:

[0135] 1) Set time nodes for several different growth stages and evaluate the growth situation of the plants at each node.

[0136] 2) At each node, measure the average area of the orthographic projections of the four vertical faces of the plant as the growth index.

[0137] 3) Compare the measured growth index with the standard growth curve to analyze the growth state.

[0138] 4) If the growth index is lower than the standard value, increase the light intensity adjustment coefficient for this growth stage.

[0139] 5) If the growth index is higher than the standard value, decrease the light intensity adjustment coefficient for this growth stage.

[0140] 6) Recalculate the output light intensity of the light controller according to the adjusted light intensity coefficient.

[0141] 7) Dynamically adjust the light intensity according to the growth response and light requirements of the plants.

[0142] 8) Regularly evaluate the impact of the light duration on the plants to determine whether the light cycle needs to be adjusted.

[0143] Through the monitoring and feedback adjustment of this step, the light conditions can be continuously optimized to meet the real-time needs of plant growth.

[0144] S70. Specific implementation method for gradually adjusting the light intensity and light cycle to the natural light conditions of the transplanting site:

[0145] 1) Query the data of natural light intensity and light duration in different months at the transplanting site.

[0146] 2) Design a gradual transition plan for light intensity and light duration, with an adjustment amplitude of no more than 10% per month.

[0147] 3) Start implementing the transition plan in the second year after transplantation and adjust the parameters of the light controller month by month.

[0148] 4) Monitor the growth response of plants to light changes. If adverse reactions occur, suspend the adjustment amplitude.

[0149] 5) When the parameters are adjusted to 80% of the natural light level in the transplantation area, maintain the parameter stability for 2 months.

[0150] 6) Then continue to adjust to 90% and 100% of the natural light level, and maintain each level for 2 months. Decide on subsequent adjustments based on the plant conditions.

[0151] 7) Finally, the light conditions reach the natural light level in the transplantation area, and the transition is completed.

[0152] 8) Continuously monitor the growth conditions of plants and make fine adjustments if necessary.

[0153] Through the gradual transition of light conditions, plants can smoothly adapt to the light environment in the transplantation area and enhance their self - survival ability.

[0154] The following is a specific embodiment of the method of the present invention:

[0155] Step S10: Determine the light parameters of the native place of subtropical plants

[0156] Consult the climate data such as the monthly average temperature T (°C), precipitation P (mm), sunshine hours S (h) in subtropical regions over the years, and screen out the regions that meet the subtropical climate conditions, that is:

[0157] 20°C ≤ T ≤ 25°C

[0158] 1000mm ≤ P ≤ 2000mm

[0159] 2000h ≤ S ≤ 2500h

[0160] Select n sample collection points in the determined subtropical regions. Set light intensity sensors at each collection point to collect the light intensity data from sunrise to sunset every day, and the collection period is 1 year. The data collected by the sensor is the light intensity E i，j (lux), where i represents the collection point and j represents the collection time period.

[0161] Process the data of each collection point:

[0162] Calculate the daily sunshine time T i (h)

[0163] Ti = t|E i，t > E0, t = 1, 2, ..., 24 * 60

[0164] where E0 is the threshold light intensity for determining sunshine, and it can be selected as E0 = 1000 lux.

[0165] Calculate the daily sunshine amount Q i，d (lm)

[0166] Q i，d = ∑E i，j , t ∈ T i

[0167] Calculate the average daily sunshine amount within the collection period

[0168]

[0169] where D is the total number of collection days.

[0170] Calculate the average monthly sunshine amount M for each month i，m (lm)

[0171]

[0172] where D m is the number of days in the m-th month.

[0173] Integrate all collection points' and M i，m , and calculate the average daily light amount and the average monthly light amount M m .

[0174] Consult plant physiology materials to determine the daily length change function f(t) of the native place of subtropical plants.

[0175] Summarize the above data to obtain the light parameters of the native place of subtropical plants:

[0176] Annual average sunshine amount:

[0177] Average monthly sunshine amount: M m , m = 1, 2,... 12

[0178] Daily length change: f(t), t = 1, 2,... 365

[0179] Step S20: Compare the light parameters of the transplantation site of subtropical plants

[0180] Query the geographical coordinates (lat, lon) of the transplantation site to determine the latitude range it is in.

[0181] Consult the climate data in this latitude range to obtain light-related data, including the annual sunshine hours S (h), the extreme sunshine hours S max , S min .

[0182] Select n collection points in the transplantation area and collect the light intensity data E for one year i，j .

[0183] Process the collected data:

[0184] Calculate the daily sunshine time T i

[0185] Calculate the daily sunshine amount Q i，d

[0186] Calculate the annual average sunshine amount

[0187] Calculate the monthly average sunshine amount M i，m

[0188] Integrate all the data of the collection points to obtain the annual average sunshine amount and the monthly average sunshine amount M t，m .

[0189] Determine the day length change function g(t) of the transplantation area according to the latitude and sunshine time data

[0190] Compare the light parameters of the transplantation area with those of the original area

[0191] Step S30 determines the adjustment amount of the light parameters according to the comparison result

[0192] Calculate the relative difference of the monthly average light amount:

[0193]

[0194] Calculate the day length difference:

[0195] ΔT d = f(t) - g(t)

[0196] Determine the light demand coefficient k at different stages according to the plant growth cycle and stages s , where s represents the growth stage

[0197] Calculate the light adjustment amount for each month:

[0198] ΔE m = M m ·r m ·k s

[0199] Calculate the day length adjustment amount:

[0200] ΔT d = ΔT d ·k s

[0201] Step S40 sets the parameters of the light controller according to the adjustment amount

[0202] Select an adjustable LED light source as the light source of the lighting system

[0203] Determine the spectral distribution λ of the LED according to the photosynthetic characteristics of the plant

[0204] Input the calculated ΔE m , ΔT d into the control system

[0205] Add a light intensity feedback system to adjust the light intensity in real time

[0206] Set the minimum night light intensity E min to maintain plant growth

[0207] Test the system until the lighting conditions meet the requirements

[0208] Step S50 transplant plants

[0209] Select healthy seeds or seedlings

[0210] Prepare a growth chamber for controlling light, temperature, humidity, soil, etc

[0211] Inoculate the plants on the carrier

[0212] Put them into the growth chamber and connect the lighting control system

[0213] Gradually adjust the light to the adapted state

[0214] Turn on the temperature and humidity control system

[0215] Provide measures such as nutrient irrigation

[0216] Step S60 adjusts the light according to the growth situation

[0217] Set the growth evaluation time node t n

[0218] Measure the growth index I at each node n .

[0219] Calculate the difference between the growth index and the standard value

[0220] diff n = I n - I s td[n]

[0221] If diff n > 0, then decrease the light adjustment coefficient k at stage n n ;

[0222] If diff n < 0, then increase k n .

[0223] Recalculate the light adjustment amount.

[0224] Update the system according to the adjusted light parameters.

[0225] Monitor the impact of light on plants in real time and adjust the light cycle as appropriate.

[0226] Step S70 is adjusted to the local light conditions

[0227] Obtain the local average monthly light amount L m and the sunshine duration T l .

[0228] Design an adjustment plan with a monthly adjustment amount not exceeding 10%.

[0229] Adjust the light monthly and reach the local light level in about 2 years.

[0230] For each new level of adjustment, maintain for 2 months to observe the plant response.

[0231] Finally, determine that the plant reaches stable growth and complete the adjustment.

[0232] Continuously monitor the plant status to ensure its adaptation to the local light.

[0233] Specifically, the principle of the present invention is as follows: The present invention first quantitatively evaluates the light difference between the native place and the transplantation place, and determines the light supplementation plan for different growth stages, including the increased value of light intensity and the extended value of light time. This can ensure that the plant obtains the same photosynthetic light energy as in the native environment. Then, the present invention establishes a light monitoring and control system. This system can dynamically adjust the output light intensity and lighting time mode of the light source according to the changes in the plant growth period, providing the best light conditions. At the same time, the system detects the real-time growth response of the plant and adjusts the light parameters in real time to accurately match the photosynthetic needs of the plant. Finally, the system gradually adjusts the light to the local natural level, improving the adaptability of the plant to changes in the light environment. This is beneficial to enhancing the stress resistance of the plant, enabling it to fully adapt to the growth environment of the transplantation place.

[0234] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for controlling light during the cross-latitude transplantation of subtropical plants, characterized in that, It includes the following steps: S10. Determine the light parameters of the original habitat of subtropical plants, including light intensity and light cycle; S20. Compare the light parameters of the transplantation site of subtropical plants; S30. Determine the adjustment value of the light parameters according to the comparison result; S40. Set the initial light parameters of the light controller according to the adjustment value; S50. Transplant the subtropical plants into a new environment equipped with a light controller; S60. Adjust the light intensity and light cycle of the light controller according to the plant growth index; S70. Gradually adjust the light intensity and light cycle to the natural light conditions of the transplantation site; Wherein, the plant growth index is the difference between the current growth length of the plant and the standard growth length of the same kind of plants in the same growth period in the subtropics; the standard growth length is represented by the average area of the orthographic projections of the four vertical surfaces of the plant; Wherein, the step S10 includes: Obtain the annual climate data of the subtropical region, including monthly average temperature, precipitation, and sunshine hours, and determine the location of the original habitat of subtropical plants; Select multiple sample collection points in the original habitat of subtropical plants, set light intensity sensors and recording devices at each collection point, and continuously record the light intensity change data for 1 year; Analyze the light intensity change curves of each collection point for 1 year, and calculate the annual average light intensity and monthly average light intensity; Integrate the light intensity data of each collection point, and calculate the annual average light intensity and monthly average light intensity of each month in the original habitat of subtropical plants; Query the literature on plant physiology and ecology to determine the light cycle change rule of the original habitat of subtropical plants, that is, the change curve of the daytime light time and the nighttime dark time; Integrate the above-obtained data to determine the annual average light intensity, monthly average light intensity, and light cycle change curve of the original habitat of subtropical plants; Wherein, the step S30 includes: Compare the monthly average light intensity of the original habitat and the transplantation site of subtropical plants, and calculate the light intensity difference of each month; Compare the light cycles of the original habitat and the transplantation site of subtropical plants, and calculate the difference in daytime and nighttime light times; Integrate the light intensity difference and the light time difference, and calculate the adjustment value of the light amount to be increased or decreased in each month based on the light conditions of the original habitat; Based on the growth cycle of the plant, determine the light requirements at different growth stages, and set the light intensity adjustment coefficients required for each growth stage; Combine the above light amount adjustment value and light intensity adjustment coefficient to obtain the specific light intensity enhancement or weakening value of the light controller in different months and growth stages; Calculate the adjustment value of the light time to be extended or shortened in different months according to the difference in daytime and nighttime light times; Wherein, the step S60 includes: Set time nodes for several different growth stages, and evaluate the growth situation of the plant at each node; Measure the plant growth index at each time node; Compare the measured growth index with the value at the corresponding time node of the standard growth curve to analyze the growth state; If the growth index is less than 0, increase the light intensity adjustment coefficient of this growth stage; If the growth index is greater than 0, decrease the light intensity adjustment coefficient of this growth stage; Recalculate the output light intensity of the light controller according to the adjusted light intensity coefficient; Dynamically adjust the light intensity according to the growth response and light requirements of the plants.

2. The method for controlling illumination in the cross-latitude transplantation of subtropical plants according to claim 1, wherein The step S20 includes: Obtain the geographical location information of the transplantation site and determine the latitude range where it is located; Obtain the climate data of the latitude range where the transplantation site is located; Set multiple collection points at the transplantation site, and set a light intensity sensor and a recording device at each collection point to record the light intensity change data for 1 year; Analyze the light intensity change curves of each collection point, and calculate the annual average light intensity and the monthly average light intensity; Integrate the light intensity data of each collection point to determine the annual average light intensity and the monthly average light intensity of the transplantation site; Query the light duration data during the plant growth period to determine the light cycle change rule of the transplantation site; Compare the light parameters of the transplantation site with the light parameters of the original place of subtropical plants, and analyze the differences in light intensity and light cycle.

3. The method for controlling light during the cross-latitude transplantation of subtropical plants according to claim 1, characterized in that, The step S40 includes: Select an LED light source that can adjust the light intensity and light duration as the light source of the light controller; Set the output spectral range of the light controller, and select a suitable spectrum according to the photosynthetic characteristics of subtropical plants; Input the monthly light intensity adjustment value and the light duration adjustment value calculated in step S30 into the controller; Write a light control execution program to adjust the output light intensity and lighting time of the LED light source according to the monthly and time change rules; Connect the light intensity sensor to the controller feedback system to monitor the light intensity in real time and adjust it in time; Set the night light conditions to provide the minimum light intensity required for plant growth.

4. A method for controlling illumination in the cross-latitude transplantation of subtropical plants according to claim 1, characterized in that, The step S50 includes: Select seeds or spike seedlings of subtropical plants with good growth conditions and no pests and diseases for transplantation; Prepare a plant growth control box that regulates light, temperature and humidity, and soil nutrients; Inoculate the plant seeds or spike seedlings into the carriers prepared in advance in the box; Place the growth box in an environment with a light controller and connect the light control system; Gradually adjust the light intensity and light duration in the growth box to make the plants adapt to the light environment; Turn on the temperature and humidity control system of the growth box to provide the most suitable temperature and humidity conditions; Supplement nutrients and irrigate.

5. A method for controlling illumination during the cross-latitude transplantation of subtropical plants according to claim 1, characterized in that, The step S70 includes: Query the natural light intensity and light duration data of different months at the transplantation site; Design a gradual transition plan for light intensity and light duration, with the monthly adjustment amplitude not exceeding 10%; Start implementing the transition plan in the second year after transplantation, and adjust the parameters of the light controller month by month; Monitor the growth response of the plants to the light change. If there are adverse reactions, suspend the adjustment amplitude; When the parameters are adjusted to 80% of the natural light level at the transplantation site, maintain the parameters stable for 2 months; Then continue to adjust to 90% and 100% of the natural light level, and maintain each level for 2 months; Finally, the light conditions reach the natural light level at the transplantation site, and the transition is completed.

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