Stereoscopic soilless culture system and method for wild celery

Abstract

The invention belongs to the technical field of agricultural instruments, and particularly relates to a three-dimensional soilless culture system and method for wild celery. Wherein a plurality of layers of cultivation grooves are formed in the supporting frame, an illumination sensor and an artificial LED light source are arranged in the supporting frame 1, the nutrient solution pool is communicated with a water suction pump, the water suction pump is communicated with a PPR water inlet pipe, the PPR water inlet pipe is provided with an ultraviolet sterilizer and is communicated with the cultivation grooves through a water inlet PVC hose, and a water inlet electromagnetic valve is arranged on the water inlet PVC hose; the nutrient solution pool is communicated with the disc type filter, the disc type filter is communicated with the PPR drain pipe, and the PPR drain pipe is communicated with the cultivation tank; according to the method, the weak light environment under multilayer three-dimensional soilless culture is fully utilized, and the red and blue light supplementing devices arranged in the cultivation frame are combined, so that a suitable light environment is provided for the wild celery, the light requirements of the wild celery in all growth cycles are met, the growth of the wild celery is promoted, the quality of the wild celery is improved, and high-quality and high-efficiency production of the wild celery is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a three-dimensional soilless cultivation system and method for mountain celery. Background Art

[0002] Soilless cultivation refers to a method of growing crops using nutrient solution or nutrient solution plus solid matrix instead of natural soil.

[0003] Compared with traditional soil cultivation methods, soilless cultivation has many advantages and broad development prospects. Its main features are as follows:

[0004] 1. Save water, save fertilizer, and increase yield: In soilless cultivation, the various nutrients required by crops are artificially formulated into nutrient solution for application, which results in less water loss, balanced nutrients, high absorption efficiency, and the ability to scientifically supply nutrients according to different crop types or different growth stages of the same crop. Therefore, crops grow robustly and vigorously, and can fully realize their potential for increasing yield.

[0005] 2. Clean, hygienic and pollution-free: In soil cultivation, organic fertilizers are often used. The fermentation of organic fertilizers produces odors that pollute the environment and easily breeds insect eggs and pathogens, harming crops. Soilless cultivation uses inorganic fertilizers for crop production, which is clean and hygienic and can avoid these problems.

[0006] 3. Labor-saving, effort-saving, and easy to manage: Soilless cultivation does not require tillage, turning the soil, weeding, and other operations, saving labor and effort. During soilless cultivation, the nutrient solution can be supplied in a timely and appropriate amount through an automated control system according to the needs of crop growth and development, which will not cause waste, greatly reduce labor intensity, and is conducive to the realization of agricultural modernization.

[0007] 4. Avoid continuous cropping problems: In agricultural production, continuous cropping in the soil can lead to nutrient imbalance, aggravation of soil-borne diseases and other problems. Regularly replacing the nutrient solution during soilless cultivation can fundamentally avoid continuous cropping problems.

[0008] Ostericum sieboldii (Miq.) Nakai is a herbaceous plant of the genus Ostericum in the family Apiaceae. Wild Ostericum sieboldii often grows on hillsides, grasslands, valleys, forest edges and under forests. As Ostericum sieboldii is a shade-loving plant with relatively low requirements for light intensity, it is more suitable for three-dimensional cultivation to achieve efficient production.

[0009] Although the three-dimensional cultivation technology of mountain celery is favored for its high land utilization rate and high output, it also has some shortcomings. The design of the three-dimensional soilless cultivation rack may cause the upper layer to block the light of the lower layer, affecting the lighting conditions. Although mountain celery is a shade-loving plant, it also requires a certain intensity of light to meet its growth needs. At present, the design of three-dimensional cultivation racks often does not fully consider the lighting conditions, which limits its applicability to plants and reduces the utilization efficiency of the cultivation racks.

[0010] Therefore, the present art is in urgent need of a three-dimensional soilless cultivation system for mountain celery with high space utilization, automatic supply of nutrient solution, adjustable light environment, and easy management. Summary of the invention

[0011] In order to overcome the above problems, the present invention provides a three-dimensional soilless cultivation system and method for mountain celery. In combination with the biological characteristics of mountain celery as a shade-loving plant, the weak light environment under multi-layer three-dimensional soilless cultivation is fully utilized, and the red and blue light supplementary lighting device configured in the cultivation frame can provide a suitable lighting environment for the mountain celery to meet its lighting needs in each growth cycle, promote the growth of mountain celery and improve its quality, and help to achieve high-quality and efficient production of mountain celery. The present invention is a three-dimensional soilless cultivation system for mountain celery with high space utilization, automatic supply of nutrient solution, adjustable lighting environment, and easy management.

[0012] A three-dimensional soilless cultivation system for mountain celery includes a support frame 1, a cultivation trough 2, a nutrient solution pool 3, a water pump 4, an ultraviolet disinfector 5, a light sensor 10, an artificial LED light source 11, a water inlet solenoid valve 13, a disc filter 24, and a drain outlet solenoid valve 25; wherein:

[0013] The support frame 1 is provided with multiple layers of cultivation troughs 2 from top to bottom, and a light sensor 10 and an artificial LED light source 11 are provided in the support frame 1 above the topmost cultivation trough 2, and a light sensor 10 and an artificial LED light source 11 are provided in the support frame 1 between every two layers of cultivation troughs 2;

[0014] The water outlet of the nutrient solution pool 3 is connected to the water inlet of the water pump 4, and the water outlet of the water pump 4 is connected to the PPR water inlet pipe 6, and the PPR water inlet pipe 6 is provided with an ultraviolet disinfector 5, and the PPR water inlet pipe 6 is connected to the water inlet of each cultivation trough 2 through the water inlet PVC hose 7, and the water inlet solenoid valve 13 is provided on the water inlet PVC hose 7 at each water inlet;

[0015] The return water port of the nutrient solution pool 3 is connected to the water outlet of the disc filter 24 through a pipeline, and an ultraviolet disinfector 5 is provided on the pipeline. The water inlet of the disc filter 24 is connected to the PPR drain pipe 26, and the PPR drain pipe 26 is connected to the drain outlet of each cultivation trough 2 through a drain outlet PVC hose 12, and each drain outlet PVC hose 12 is provided with a drain outlet solenoid valve 25; an EC value detector 8 and a temperature detector 9 are provided in the nutrient solution pool 3.

[0016] The two ends of the cultivation trough 2 are respectively provided with fixing clamps 22 , and the two ends of the cultivation trough 2 are respectively fixed to two corresponding support pipes of the support frame 1 through the fixing clamps 22 .

[0017] A planting plate 14 is provided on the upper surface of each cultivation trough 2 , and a water level limit probe 16 is provided inside each cultivation trough 2 .

[0018] It also includes a timer 23 , wherein each drain outlet solenoid valve 25 is electrically connected to the timer 23 .

[0019] The support frame 1 and the bottom of the nutrient solution pool 3 are respectively provided with universal wheels.

[0020] The outside of the nutrient solution pool 3 is covered with rubber-plastic heat-insulating cotton 21 , and the top of the nutrient solution pool 3 is provided with a sliding cover plate 20 .

[0021] The artificial LED light source 11 is a plate-type light source, on which a plurality of red LED lamp beads and a plurality of blue LED lamp beads are arranged, and two ends of the light source board are respectively fixed to the front and rear support tubes on both sides of the support frame 1 .

[0022] The ultraviolet sterilizer 5 is a Lingzhuo uv-lzc ultraviolet sterilizer.

[0023] A three-dimensional soilless cultivation method for mountain celery comprises the following contents:

[0024] Step 1: open the sliding cover 20, add nutrient solution into the nutrient solution pool 3, detect the EC value and temperature of the nutrient solution in the nutrient solution pool 3 through the EC value detector 8 and the temperature detector 9, and if it does not meet the crop growth requirements, adjust the nutrient solution concentration and temperature parameters until the EC value and temperature of the nutrient solution in the nutrient solution pool 3 detected by the EC value detector 8 and the temperature detector 9 meet the required requirements;

[0025] Step 2, turn on the water pump 4 and the water inlet solenoid valve 13, sterilize the nutrient solution in the nutrient solution pool 3 through the ultraviolet sterilizer 5, and then transport it to each layer of the cultivation tank 2 through the PPR water inlet pipe 6 and the water inlet PVC hose 7;

[0026] Step 3: The water level limit probe 16 in each layer of the cultivation trough 2 detects the water level of the nutrient solution in the cultivation trough 2. If the water level limit probe 16 detects the water level, the water pump 4 and the water inlet solenoid valve 13 are closed;

[0027] Step 4: Wrap the base of the seedling with a planting sponge 15 and insert it into the planting hole of the planting plate 14 to fix the seedling in the cultivation trough 2;

[0028] Step 5, according to the growth characteristics of mountain celery, the number of different red and blue light beads on the artificial LED light source 11 is adjusted at different growth and development stages of mountain celery. Within 10 days of planting mountain celery, the corresponding light beads are turned on at a ratio of 7:1 for red and blue light beads for supplementary lighting; 10-20 days after planting mountain celery, the corresponding light beads are turned on at a ratio of 7:3 for red and blue light beads for supplementary lighting; 20 days after planting mountain celery, the corresponding light beads are turned on at a ratio of 3:5 for red and blue light beads for supplementary lighting;

[0029] Step six, when the nutrient solution needs to be replaced, open the drain solenoid valve 25 set at the drain outlet of the cultivation trough 2, and the nutrient solution in the cultivation trough 2 flows through the disc filter 24 through the drain outlet PVC hose 12 and the PPR drain pipe 26, and after impurities and particles are removed, it is disinfected by the ultraviolet sterilizer 5 and then returned to the nutrient solution pool 3 for reuse.

[0030] The timer 23 can be used to preset a time. When the preset time is reached, the nutrient solution will be replaced according to step six.

[0031] Beneficial effects of the present invention:

[0032] 1. The three-dimensional cultivation space is diversified, and the three-dimensional cultivation rack is fully utilized for multi-layer planting, which can save land, make full use of space, increase vegetable yield per unit area of ​​land, improve land utilization rate, and make full use of water, fertilizer, light and other resources to achieve a comprehensive improvement in the yield and quality of mountain celery. The whole set of equipment is more integrated, reducing civil construction costs and facilitating later operation and maintenance management.

[0033] 2. In three-dimensional cultivation, nutrient delivery pipelines are equipped for easy management. Nutrients can be supplied scientifically and efficiently according to the nutrient needs of vegetables at different growth stages, which is beneficial to vegetable growth and improves nutrient utilization.

[0034] 3. The use of three-dimensional soilless cultivation can avoid the obstacles of continuous cropping in traditional soil cultivation.

[0035] 4. The adoption of three-dimensional soilless cultivation eliminates the need for tillage, turning the soil, weeding and other operations, saving effort and labor. Moreover, producers do not need to bend over or squat, but can stand to perform management operations such as planting and picking, effectively reducing labor intensity.

[0036] 5. Through the automated control system and various detectors, accurate monitoring and adjustment of the cultivation environment can be achieved, the yield and quality of mountain celery can be improved, the workload of manual management can be reduced, and safety risks caused by untimely personnel inspections can be avoided.

[0037] The present invention realizes automatic control through the nutrient solution supply system, which can reduce the waste of resources, save labor and effort, and avoid unnecessary losses caused by untimely inspection by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0039] Figure 1 This is a schematic diagram of the structure of the three-dimensional soilless cultivation frame of the present invention;

[0040] Figure 2 It is a schematic diagram of the nutrient solution supply system of the present invention;

[0041] Figure 3 for Figure 2 Part I in the middle shows a partial enlarged schematic diagram of the water inlet solenoid valve;

[0042] Figure 4 for Figure 2 Part II is a partial enlarged schematic diagram of the drain outlet solenoid valve;

[0043] Figure 5 This is a schematic diagram of the structure of the cultivation trough of the present invention;

[0044] Figure 6 This is a schematic diagram of the artificial light source system of the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of the nutrient solution pool of the present invention;

[0046] Figure 8 It is a partial enlarged schematic diagram of the sliding cover plate of the present invention;

[0047] Fig. 9 This is a schematic diagram of the connection between the support frame and the cultivation trough;

[0048] Fig.10Fig. 1 The effect of different nutrient solution formulations on the plantheight of Ostericum sieboldii (Miq.) Nakai.

[0049] Fig.11 Fig.2 Influence of different nutrient solution formulations on the stem girthof Ostericum sieboldii (Miq.) Nakai.

[0050] Fig.12 Fig.3 Effects of different nutrient solution formulations on the aboveground fresh weight of Ostericum sieboldii (Miq.) Nakai.

[0051] Fig.13 Fig.4 Effects of different nutrient solution formulations on the aboveground dry weight of Ostericum sieboldii (Miq.) Nakai.

[0052] Fig.14 Fig.5 Effects of different nutrient solution formulations on the total chlorophyll content of Ostericumsieboldii (Miq.) Nakai.

[0053] Marking Description:

[0054] 1: Support frame; 2: Cultivation trough; 3: Nutrient solution pool; 4: Water pump; 5: Ultraviolet disinfector; 6: PPR water inlet pipe; 7: Water inlet PVC hose; 8: EC value detector; 9: Temperature detector; 10: Light sensor; 11: Artificial LED light source; 12: Drain outlet PVC hose; 13: Water inlet solenoid valve; 14: Planting plate; 15: Planting sponge; 16: Water level limit probe; 17: DMX module; 18: Artificial LED light source power switch; 19: Display; 20: Sliding cover; 21: Rubber and plastic insulation cotton; 22: Fixed caliper; 23: Timer; 24: Disc filter; 25: Drain outlet solenoid valve; 26: PPR drain pipe. DETAILED DESCRIPTION

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0056] Example 1

[0057] A three-dimensional soilless cultivation system for mountain celery, such as Figure 1-9 As shown, it includes a support frame 1, a cultivation trough 2, a nutrient solution pool 3, a water pump 4, an ultraviolet disinfector 5, a light sensor 10, an artificial LED light source 11, a water inlet solenoid valve 13, a disc filter 24, and a drain outlet solenoid valve 25; wherein:

[0058] The support frame 1 is provided with multiple layers of cultivation troughs 2 from top to bottom. The inner wall of the support frame 1 above the topmost cultivation trough 2 is provided with a light sensor 10 and an artificial LED light source 11, and the inner wall of the support frame 1 between every other two layers of cultivation troughs 2 is provided with a light sensor 10 and an artificial LED light source 11; so as to meet the growth and development needs of the cultivated crops in the lower cultivation trough 2.

[0059] The water outlet of the nutrient solution pool 3 is connected to the water inlet of the water pump 4 through a pipeline, and the water outlet of the water pump 4 is connected to the PPR water inlet pipe 6, and the PPR water inlet pipe 6 is provided with an ultraviolet disinfector 5, and the PPR water inlet pipe 6 is connected to the water inlet of each cultivation trough 2 through the water inlet PVC hose 7, and the PVC hose 7 at each water inlet is provided with a water inlet solenoid valve 13;

[0060] The return water port of the nutrient solution pool 3 is connected to the water outlet of the disc filter 24 through a pipeline, and an ultraviolet disinfector 5 is provided on the pipeline. The water inlet of the filter 24 is connected to the PPR drain pipe 26, and the PPR drain pipe 26 is respectively connected to the drain outlet of each cultivation trough 2 through a drain outlet PVC hose 12, and each drain outlet PVC hose 12 is respectively provided with a drain outlet solenoid valve 25; an EC value detector 8 and a temperature detector 9 are provided in the nutrient solution pool 3.

[0061] The two ends of the cultivation trough 2 are respectively provided with fixing clamps 22 , and the two ends of the cultivation trough 2 are respectively fixed to two corresponding support pipes of the support frame 1 through the fixing clamps 22 .

[0062] A planting plate 14 is provided on the upper surface of each cultivation trough 2 , and a water level limit probe 16 is provided inside each cultivation trough 2 .

[0063] It also includes a timer 23 , wherein each drain outlet solenoid valve 25 is electrically connected to the timer 23 .

[0064] The support frame 1 and the bottom of the nutrient solution pool 3 are respectively provided with universal wheels.

[0065] The outside of the nutrient solution pool 3 is covered with rubber-plastic heat-insulating cotton 21 , and the top of the nutrient solution pool 3 is provided with a sliding cover plate 20 .

[0066] The artificial LED light source 11 is a plate-type light source, on which a plurality of red LED lamp beads and a plurality of blue LED lamp beads are arranged, and two ends of the light source board are respectively fixed to two front and rear support tubes on both sides of the support frame 1 .

[0067] The ultraviolet sterilizer 5 is a Lingzhuo uv-lzc ultraviolet sterilizer.

[0068] A three-dimensional soilless cultivation method for mountain celery comprises the following contents:

[0069] Step 1: open the sliding cover 20, add nutrient solution into the nutrient solution pool 3, detect the EC value and temperature of the nutrient solution in the nutrient solution pool 3 through the EC value detector 8 and the temperature detector 9, and if it does not meet the crop growth requirements, adjust the nutrient solution concentration and temperature parameters until the EC value and temperature of the nutrient solution in the nutrient solution pool 3 detected by the EC value detector 8 and the temperature detector 9 meet the required requirements;

[0070] Step 2, turn on the water pump 4 and the water inlet solenoid valve 13, sterilize the nutrient solution in the nutrient solution pool 3 through the ultraviolet sterilizer 5, and then transport it to each layer of the cultivation tank 2 through the PPR water inlet pipe 6 and the water inlet PVC hose 7;

[0071] Step 3: The water level limit probe 16 in each layer of the cultivation trough 2 detects the water level of the nutrient solution in the cultivation trough 2. If the water level limit probe 16 detects that the water level is higher than the water level limit probe 16, the water pump 4 and the water inlet solenoid valve 13 are closed;

[0072] Step 4: Wrap the base of the seedling with a planting sponge 15 and insert it into the planting hole of the planting plate 14 to fix the seedling in the cultivation trough 2;

[0073] Step 5, according to the growth characteristics of mountain celery, the number of different red and blue light beads on the artificial LED light source 11 is adjusted at different growth and development stages of mountain celery. Within 10 days of planting mountain celery, the corresponding light beads are turned on at a ratio of 7:1 for red and blue light beads for supplementary lighting; 10-20 days after planting mountain celery, the corresponding light beads are turned on at a ratio of 7:3 for red and blue light beads for supplementary lighting; 20 days after planting mountain celery, the corresponding light beads are turned on at a ratio of 3:5 for red and blue light beads for supplementary lighting;

[0074] Step six, when the nutrient solution needs to be replaced, open the drain solenoid valve 25 set at the drain outlet of the cultivation trough 2, and the nutrient solution in the cultivation trough 2 flows through the disc filter 24 through the drain outlet PVC hose 12 and the PPR drain pipe 26, and after impurities and particles are removed, it is disinfected by the ultraviolet sterilizer 5 and then returned to the nutrient solution pool 3 for reuse.

[0075] The timer 23 can be used to preset a time. When the preset time is reached, the nutrient solution will be replaced according to step six.

[0076] Example 2

[0077] A three-dimensional soilless cultivation system for mountain celery, such as Fig. 9 As shown, a support frame 1 is composed of four support tubes, and the support frame 1 is used to support the entire three-dimensional soilless cultivation system. A plurality of layers of cultivation troughs 2 are arranged on the support frame 1. The cultivation trough 2 is a rectangular trough without a cover, and fixed clamps 22 are arranged at the four corners for adjusting the upper and lower positions of the cultivation trough 2. The spacing between the cultivation troughs 2 is adjusted by locking the fixed clamps 22 to meet the growth space requirements of the mountain celery, so that the mountain celery plants can grow more leaves and stems, thereby increasing the yield.

[0078] The support frame 1 is made of steel pipe, with a length of 150 cm and a width of 60 cm. The spacing between the cultivation troughs is 30-40 cm, and the bottom layer is not less than 10 cm from the ground.

[0079] The cultivation trough 2 is 5 cm high, and its length and width are slightly smaller than the size of the cultivation frame, so that the spacing between the cultivation troughs 2 can be adjusted up and down by fixing the clamp 22. The bottom of the cultivation trough 2 is flat and has a certain slope, with a water inlet hole at one end and a drainage hole at the bottom of the other end.

[0080] In order to facilitate the overall transportation of the soilless cultivation frame, universal wheels are provided at the bottom of each support frame 1 and the nutrient solution pool 3 .

[0081] The nutrient solution pool 3 is 100cm*60cm*80cm in length, width and height, and is made of 304 stainless steel, which is environmentally friendly and pollution-free. In order to ensure that the nutrient solution in the nutrient solution pool 3 is maintained within the optimal temperature range required for the growth of mountain celery for a long time, a layer of 20mm thick rubber-plastic insulation cotton 21 is set on the outside of the nutrient solution pool 3 to ensure that the temperature of the nutrient solution in the nutrient solution pool 3 is maintained at a level suitable for the growth of mountain celery for a long time.

[0082] An ultraviolet disinfector 5 is provided on the water inlet pipe connected to the nutrient solution pool 3. The water in the nutrient solution pool 3 is extracted by the water pump 4 and first passes through the ultraviolet disinfector 5 on the water inlet pipe and then is transported to each layer of the cultivation tank 2 through the PPR water inlet pipe 6 to avoid water pollution affecting the production quality of mountain celery. A disc filter 24 and an ultraviolet disinfector 5 are provided on the drainage pipe connected to the nutrient solution pool 3. The nutrient solution is filtered out of impurities and particles through the disc filter 24, and then disinfected by the ultraviolet disinfector 5, and then returned to the nutrient solution pool 3 for reuse, effectively avoiding waste of resources and reducing cultivation costs. The ultraviolet disinfector 5 is a Lingzhuo UV-LZC ultraviolet disinfector.

[0083] like Figure 5 As shown, a water level limit probe 16 is provided in each layer of the cultivation trough 2. When the nutrient solution in the cultivation trough 2 is lower than the water level limit probe 16, the water level limit probe 16 sends an electrical signal to the controller, and the controller controls the water inlet solenoid valve 13 to open according to the signal, and at the same time controls the water pump 4 to open, and draws the nutrient solution in the nutrient solution pool 3 through the PPR water inlet pipe 6 and the water inlet PVC hose 7 to replenish the nutrient solution. When the nutrient solution is higher than the water level limit probe 16, an electrical signal is sent to the controller again, and the controller closes the water inlet solenoid valve 13 and the water pump 4. It should be noted that the water level limit probe 16 and the water inlet solenoid valve 13 of each layer of the cultivation trough 2 are connected in series, and the water inlet solenoid valve 13 is connected in parallel with the water pump 4 as a whole, ensuring that as long as there is a cultivation trough 2 that needs to be supplemented with nutrient solution, the water pump 4 is in an open state. At the same time, only the water inlet solenoid valve 13 of the cultivation trough 2 whose nutrient solution is lower than the water level limit probe 16 is in an open state, and the water inlet solenoid valve 13 corresponding to other cultivation troughs 2 that are not short of water is in a closed state. In this way, it is possible to supplement the nutrient solution only for the cultivation troughs 2 that are short of water, thereby avoiding the overflow of nutrient solution from the cultivation troughs 2 that are not short of water due to excessive water supplementation, polluting the cultivation environment and causing waste of resources.

[0084] like Figure 2 , Figure 4As shown, the three-dimensional cultivation system of the present invention is also provided with a drain outlet solenoid valve 25 at the drain outlet of each cultivation trough 2, and a timer 23 is provided to be connected with the drain outlet solenoid valve 25 of each cultivation trough 2. By presetting the time of the timer 23, the drain outlet solenoid valve 25 of each cultivation trough 2 is controlled to open and close according to a fixed cycle, so as to achieve the purpose of replacing the nutrient solution in the cultivation trough 2, so as to ensure that the nutrients in the nutrient solution in the cultivation trough are sufficient and promote the growth and development of mountain celery.

[0085] like Figure 5 As shown, the upper part of the cultivation trough 2 of the present invention is provided with a water inlet, and the drain outlet is located below the cultivation trough 2, and is provided with a certain slope to ensure smooth and thorough drainage. The water pipe material adopts a PVC hose, which is not only convenient for later maintenance and cleaning, but also convenient for water pipe sealing to avoid leakage of nutrient solution during drainage. The opening and closing of the nutrient solution supply system is automatically controlled by the water level limit probe 16 in the cultivation trough 2, so as to realize the automatic management of the nutrient solution supply system, reduce the waste of energy and water, save labor, and avoid unnecessary losses caused by untimely inspections by personnel. It should be noted that a detachable planting plate 14 is covered on the upper surface of the cultivation trough 2 to facilitate the transplanting of mountain celery. According to the biological characteristics and morphological characteristics of mountain celery, the distance of the planting holes is reasonably set, the hole spacing is set to 8cm, and the row spacing is set to 10cm. During planting, the base of the seedling is wrapped with a planting sponge 15 and plugged into the planting hole to fix the seedling.

[0086] like Figure 6As shown, the cultivation system is provided with a red and blue light supplement function to promote the growth of mountain celery and improve its quality. A light sensor 10 and an artificial LED light source 11 are provided on the inner wall of the support frame 1 above the topmost cultivation trough 2, and a light sensor 10 and an artificial LED light source 11 are provided on the inner wall of the support frame 1 between every two layers of cultivation troughs 2 to provide suitable lighting conditions to meet the growth and development needs of the mountain celery in the lower cultivation trough 2. It should be noted that the artificial LED light source 11 uses an LED light source. Because the LED light source is a cold light source, it will not burn the mountain celery during the supplementary light process, and can effectively improve the light energy utilization rate of the mountain celery. The lamp beads of the artificial LED light source 11 use 630nm-660nm red light and 440nm-470nm blue light, and are configured in a ratio of 7:5. According to the requirements of mountain celery for lighting conditions at different growth and development stages, the DMX512 dimming control module 17 can provide light sources with different red and blue light ratios at different growth and development stages of mountain celery to promote the growth of mountain celery and achieve the purpose of increasing yield and improving quality. A power switch is connected to the DMX512 module 17. According to the growth characteristics of mountain celery, the three buttons A, B, and C are set to adjust different red and blue light ratios at different growth and development stages of mountain celery. For example, within 10 days of planting mountain celery, a light source with a red-blue light ratio of 7:1 is used for supplementary lighting, which is conducive to the rapid growth of mountain celery stems and leaves; from 10d to 20d, the blue light ratio is appropriately increased, and a light source with a red-blue light ratio of 7:3 is used for supplementary lighting; after 20d, the red light ratio is appropriately reduced and the blue light ratio is increased, and a light source with a red-blue light ratio of 3:5 is used for supplementary lighting. The DMX dimming control module adopts digital dimming, which has the advantages of precise dimming, stable and smooth, and high signal reliability. The specific working principle is as follows:

[0087] The DMX dimming module transmits signals through data lines. Each lighting device connected to the DMX dimming module has a unique DMX address. The DMX signal consists of multiple data frames, each frame contains 512 bytes, and the value range of each byte is 0-255, representing 0% to 100% of the light brightness. The lighting console or computer software generates a control signal and transmits it to the lighting device through the data line. The device adjusts the lighting parameters according to the received signal, such as turning the light on and off, adjusting the brightness, etc.

[0088] Automatic control system: The water inlet sends an electrical signal to the controller through the water level limit probe 16. The controller decides whether to start or close the solenoid valve 13 and the water pump 4 according to the high and low levels of the signal. When the water level is lower than the preset water level threshold, the probe outputs a signal, and the controller activates the water pump 4 to pump water after receiving the signal; when the water level reaches the water level threshold, the probe outputs a different signal, and the controller closes the water pump 4 to prevent the nutrient solution in the cultivation trough 2 from overflowing.

[0089] like Figure 7 , Figure 8 As shown, the nutrient solution pool 3 of the present invention is provided with an EC value detector 8, a temperature detector 9 and a display 19. By detecting the EC value and temperature of the nutrient solution in the nutrient solution pool 3, the values ​​are reflected on the display 19. By opening the sliding cover 20 on the top of the nutrient solution pool 3, the concentration and temperature of the nutrient solution can be adjusted according to the nutrient solution parameters displayed on the display 19 until the values ​​on the display 19 meet the growth needs of mountain celery, so as to achieve accurate allocation of the nutrient solution ratio in the nutrient solution pool 3, ensure that the various nutrients and concentrations required for different growth and development stages of mountain celery are met, and the temperature of the nutrient solution is detected by the temperature detector 9, accurately controlled, and the rubber-plastic insulation cotton 21 on the outside of the nutrient solution pool 3 is used to ensure that the nutrient solution in the nutrient solution pool 3 is maintained at the optimum temperature level for the growth and development of mountain celery for a long time, so as to achieve efficient and high-quality production. It should be noted that the sliding cover 20 slides on the nutrient solution pool 3 through a slide rail, and is usually in a closed state to avoid contamination of water and nutrient solution in the nutrient solution pool 3 during daily production.

[0090] like Figure 1 and Fig. 9 As shown, a plurality of layers of cultivation troughs 2 are arranged on the three-dimensional cultivation support frame 1 of the present invention, and fixed clamps 22 are respectively arranged at both ends of the cultivation troughs 2, and the two ends of the cultivation troughs 2 are respectively fixed to two corresponding support pipes of the support frame 1 through the fixed clamps 22. The spacing of each cultivation trough 2 is adjusted by locking the fixed clamps 22 to meet the needs of the mountain celery growth space, so that the mountain celery plant can grow more leaves and stems, thereby increasing the yield, and at the same time can play a role of fixed limit.

[0091] In the three-dimensional cultivation system of the present invention, since the cultivation trough 2 can be moved up and down to adjust the spacing, the water pipes connected to the water inlet solenoid valve 13 and the water outlet solenoid valve 25 are all made of PVC hoses to avoid affecting the up and down movement of the cultivation trough 2, and the remaining water inlet pipes and drainage pipes are all made of PPR water pipes, which can play the role of fixing the solenoid valve.

[0092] Example 3

[0093] This embodiment provides a three-dimensional soilless cultivation rack for mountain celery, which is used indoors and the room temperature is maintained at 20°C to 25°C. In order to clarify the most suitable nutrient solution for three-dimensional soilless cultivation of mountain celery, the present invention uses four nutrient solution formulas for comparison, namely C1, C2, C3, and C4, which are as follows:

[0094]

[0095] The trace element formula is a general formula:

[0096]

[0097] The equipment used is Figure 1As shown, a three-dimensional cultivation support frame 1 is provided with 4 layers of cultivation troughs 2, and a light sensor 10 and an artificial LED light source 11 are provided on the inner wall of the support frame 1 above the topmost cultivation trough 2, and a light sensor 10 and an artificial LED light source 11 are provided on the inner wall of the support frame 1 between every other two layers of cultivation troughs 2. The nutrient solution in the nutrient solution pool 3 is transported to each layer of cultivation trough 2 through the PPR water inlet pipe 6 after passing through the water pump 4 and the ultraviolet disinfector 5 in turn, and then flows through the disc filter 25 through the PPR drainage pipe 12. After removing impurities and particles, it is disinfected by the ultraviolet disinfector 5 and returned to the nutrient solution pool 3 for reuse, thereby reducing the cultivation cost. The ultraviolet disinfector 5 is a Lingzhuo UV-LZC ultraviolet disinfector.

[0098] Wrap the root base of the mountain celery seedling with a planting sponge 15, and then put it into the planting hole of the planting plate 14 covered on the upper surface of the cultivation trough 2, and put 3 mountain celery seedlings in each hole, with the hole spacing set to 8 cm and the row spacing set to 10 cm. The nutrient solution concentration within 10 days of planting is 1 / 4 of the standard concentration of the above nutrient solution formula; the nutrient solution concentration from 10 days to 20 days is 1 / 2 of the standard concentration of the above nutrient solution formula; after 20 days, the nutrient solution concentration is adjusted to the standard concentration of the above nutrient solution formula.

[0099] like Figure 8 As shown, the three-dimensional cultivation system of the present invention is provided with a water level limit probe 16 in each layer of the cultivation trough 2. When the nutrient solution in the cultivation trough 2 is lower than the water level limit probe 16, the water level limit probe 16 sends an electrical signal to the controller, and the controller controls the water inlet solenoid valve 13 to open, and at the same time controls the water pump 4 to open, and the nutrient solution in the nutrient solution pool is drawn through the PPR water inlet pipe 6 and the water inlet PVC hose 7 to replenish the nutrient solution. When the nutrient solution is higher than the water level limit probe 16, an electrical signal is sent again, and the controller closes the water inlet solenoid valve 13 and the water pump 4. It should be noted that the water level limit probe 16 and the water inlet solenoid valve 13 of each layer of the cultivation trough 2 are connected in series, and the water inlet solenoid valve 13 is connected in parallel with the water pump 4 as a whole, to ensure that as long as there is a cultivation trough 2 that needs to be supplemented with nutrient solution, the water pump 4 is in an open state. At the same time, only the water inlet solenoid valve 13 of the cultivation trough 2 whose nutrient solution is lower than the water level limit probe 16 is in an open state, and the water inlet solenoid valve 13 of other cultivation troughs 2 that are not short of water is in a closed state. In this way, it is possible to supplement the nutrient solution only for the cultivation troughs 2 that are short of water, thereby avoiding the overflow of nutrient solution from the cultivation troughs 2 that are not short of water due to excessive water supplementation, which pollutes the cultivation environment and causes waste of resources.

[0100] like Figure 1 , Fig. 9As shown, the three-dimensional cultivation system of the present invention has a cultivation trough 2 that can be moved up and down to adjust the spacing. The water pipes connected to the water inlet and outlet of the solenoid valve 13 all use the water inlet PVC hose 7 to avoid affecting the up and down movement of the cultivation trough. The remaining water inlet pipes and drainage pipes all use PPR water pipes, which can play the role of fixing the solenoid valve.

[0101] like Figure 4 As shown, the stereoscopic cultivation system of the present invention is also provided with a solenoid valve 25 at the drain outlet of each cultivation trough 2, and a timer 23 is provided to be connected to the solenoid valve 25 at the drain outlet of each cultivation trough 2. By presetting the time of the timer 23, the solenoid valve 25 at the drain outlet of each cultivation trough 2 is controlled to be opened and closed regularly according to the different growth cycles of mountain celery. Within 10 days of planting, the mountain celery seedlings absorb less nutrients, and the valve is opened for 20 seconds every 20 minutes; from 10 days to 20 days, the valve is opened for 20 seconds every 15 minutes; after 20 days, the valve is opened for 20 seconds every 10 minutes, so as to achieve the purpose of replacing the nutrient solution in the cultivation trough 2, to ensure that the nutrients in the nutrient solution in the cultivation trough are sufficient, and to promote the growth and development of mountain celery.

[0102] like Figure 5 As shown, the upper part of the cultivation trough 2 of the present invention is provided with a water inlet, and the drain outlet is located below the cultivation trough 2, and is provided with a certain slope to ensure smooth and thorough drainage. The water pipe material adopts a PVC hose, which is not only convenient for later maintenance and cleaning, but also convenient for water pipe sealing to avoid leakage of nutrient solution during drainage. The opening and closing of the nutrient solution supply system is automatically controlled by the water level limit probe 16 in the cultivation trough 2, so as to realize the automatic management of the nutrient solution supply system, reduce the waste of energy and water, save labor, and avoid unnecessary losses caused by untimely inspection by personnel. It should be noted that a planting plate 14 is covered on the upper surface of the cultivation trough 2. According to the biological characteristics and morphological characteristics of mountain celery, the distance of the planting holes is reasonably set, the hole spacing is set to 8cm, and the row spacing is set to 10cm. During planting, the base of the seedling rhizome is wrapped with a planting sponge 15 and plugged in the planting hole to fix the seedling, and 3 mountain celery seedlings are placed in each planting hole.

[0103] like Figure 6As shown, the inner wall of the support frame 1 above the uppermost cultivation trough 2 of the present invention is provided with a light sensor 10 and an artificial LED light source 11, and the inner wall of the support frame 1 between each two layers of cultivation troughs 2 is provided with a light sensor 10 and an artificial LED light source 11. The lamp beads of the artificial LED light source 11 are all 630nm-660nm red light and 440nm-470nm blue light, which are configured in a ratio of 7:5. According to the growth characteristics of mountain celery, the power switch 18 of the artificial light source is set to Set the three switches A, B, and C, and adjust different red-blue light ratios at different growth and development stages of mountain celery through the DMX dimming control system module 17. For example, within 10 days of planting mountain celery, use a light source with a red-blue light ratio of 7:1 for supplementary lighting, which is conducive to the rapid growth of mountain celery stems and leaves; 10d-20d, appropriately increase the blue light ratio, and use a light source with a red-blue light ratio of 7:3 for supplementary lighting; after 20d, appropriately reduce the red light ratio and increase the blue light ratio, and use a light source with a red-blue light ratio of 3:5 for supplementary lighting. When the sunlight intensity is lower than the preset minimum light intensity, the light sensor 10 emits a prompt sound, prompting the staff to turn on the artificial LED light source 11 to supplement the cultivation trough 2, and adjust the red-blue light ratio through the three power switches A, B, and C preset by the artificial LED light source to supplement the light, so as to meet the light requirements required by the mountain celery at each growth and development stage, promote the growth of mountain celery, and thus increase the yield of mountain celery and improve the quality.

[0104] like Figure 7 , Figure 8 As shown, the nutrient solution pool 3 of the present invention is provided with an EC value detector 8, a temperature detector 9 and a display 19. By detecting the nutrient solution ratio data and the temperature in the nutrient solution pool 3, the values ​​are displayed on the display 19. Figure 8 As shown, by opening the sliding cover 20 on the top of the nutrient solution pool 3, the nutrient solution concentration, temperature and other parameters can be adjusted according to the nutrient solution parameters displayed on the display 19 until the values ​​on the display 19 meet the growth needs of mountain celery, so as to achieve accurate allocation of the nutrient solution ratio in the nutrient solution pool 3, ensure that the various nutrients and concentrations required for different growth and development stages of mountain celery are met, and the temperature of the nutrient solution is detected by the temperature detector 9, and accurately controlled, and the rubber-plastic insulation cotton 21 on the outside of the nutrient solution pool 3 is used to ensure that the nutrient solution in the nutrient solution pool 3 is maintained at the optimal temperature level for the growth and development of mountain celery for a long time, so as to achieve efficient and high-quality production. It should be noted that the sliding cover 20 is usually in a closed state to prevent the nutrient solution in the nutrient solution pool 3 from being contaminated during daily production.

[0105] like Figure 1 and Fig. 9As shown, the three-dimensional cultivation support frame 1 of the present invention is provided with four layers of cultivation troughs 2, and fixed clamps 22 are respectively provided at both ends of the cultivation troughs 2. The two ends of the cultivation troughs 2 are respectively fixed to two corresponding support pipes of the support frame 1 through the fixed clamps 22. The spacing of each cultivation trough 2 is adjusted by locking the fixed clamps 22 to meet the needs of the mountain celery growth space, so that the mountain celery plant can grow more leaves and stems, thereby increasing the yield, and at the same time can play a role of fixed limit.

[0106] Comparison of the results of the three-dimensional cultivation system and open-field cultivation test of mountain celery:

[0107] The celery cultivation system of the present invention was used to cultivate celery in an indoor environment at 20°C to 25°C. Four nutrient solution formulas were used to compare with the celery cultivated in the open field. The physiological indicators of the celery were tested at 10 days, 20 days, 30 days, 40 days and 50 days. The four nutrient solution formulas used in the three-dimensional cultivation of celery were C1, C2, C3 and C4, and the celery cultivated in the open field was CK. The test results are as follows: Fig.10 ;

[0108] Depend on Fig.10 It can be seen that at 10 days after planting, C2>C3>C1>C4>CK; at 30 days, C2>C3>C1>CK>C4; at 50 days, the plant heights of C2 and C3 treatments were 12.74% and 8.55% higher than those of CK treatment, respectively. The plant height of C2 treatment was as high as 29.44 cm, while that of CK treatment was only 26.11 cm.

[0109] Depend on Fig.11 It can be seen that the stem diameter of C2 treatment is always greater than that of other treatments, and the stem diameter of CK treatment is the smallest. At 40 days after planting, C2>C3>C1>C4>CK; at 50 days after planting, the stem diameter of C2 treatment is the largest, which is 2.54mm, and the stem diameter of CK treatment is the smallest, which is 2.25mm.

[0110] Depend on Fig.12 , Fig.13 It can be seen that at 10 days after planting, the dry and fresh weights of the aboveground parts of different treatments were not much different; at 30 days, the dry and fresh weights of the aboveground parts of the C2 treatment were slightly higher than those of other treatments, and the dry and fresh weights of the CK treatment were the lowest; at 50 days, the dry and fresh weights of the aboveground parts of the C2 treatment were significantly greater than those of other treatments, indicating that the nutrient solution treated with C2 was more conducive to the accumulation of dry matter in mountain celery.

[0111] Depend on Fig.14It can be seen that the total amount of chlorophyll under different treatments showed a trend of first increasing and then stabilizing. At 10 days after planting, there was little difference between different treatments. At 40 days, chlorophyll accumulated rapidly in C2 and C3 treatments, which were 31.14% and 26.35% higher than those in CK treatment. At 50 days, the total amount of chlorophyll in C2 and C3 treatments was significantly higher than that in other treatments, which were 29.27% ​​and 25.61% higher than those in CK treatment, respectively. This shows that the total amount of chlorophyll in C2 treatment of mountain celery exceeded that in other treatments.

[0112] Table 6 Effects of different nutrient solution formulas and cultivation conditions on the quality of mountain celery

[0113] Table 6Effects of different nutrient solution formulations

[0114] on the quality of Ostericum sieboldii(Miq.)Nakai.

[0115]

[0116] As shown in Table 6, the vitamin C content of C2 treatment is 92.78 mg·100 g -1 , significantly higher than other treatments, 9.46% higher than CK treatment, indicating that the nutrient solution formula of C2 treatment is more conducive to the accumulation of vitamin C in mountain celery; the soluble protein content is C2>C3>C1>CK>C4, the soluble sugar content is C2>C3>C1>CK>C4; there is no significant difference in cellulose content among different treatments.

[0117] Table 7 Effects of different nutrient solution formulations on the cultivation conditions on the yield of mountain celery

[0118] yield per mu of Ostericumsieboldii(Miq.)Nakai.

[0119]

[0120] It can be seen from Table 7 that after conversion into per-acre yield, compared with the CK treatment, the per-acre yield of mountain celery in the single-layer cultivation trough of the C2 treatment was 1647.70 kg / 667 m2, which was 16.02% higher than that of the CK treatment, indicating that the nutrient solution formula of the C2 treatment was beneficial to increasing the yield of mountain celery, and because the cultivation method adopted was three-dimensional soilless cultivation, the more layers of cultivation troughs per unit land area, the higher the yield.

[0121] From the above results, it can be seen that the use of the three-dimensional cultivation system of mountain celery described in the present invention using the C2 treatment nutrient solution formula to cultivate mountain celery has more advantages than other treatment nutrient solution formulas and conventional open field cultivation, and its plant height, aboveground dry fresh weight, total chlorophyll, vitamin C, soluble protein, and soluble sugar are all higher than other treatments. In summary, the C2 treatment nutrient solution formula is used to cultivate mountain celery in the three-dimensional soilless cultivation system of the present invention, which can improve the yield and quality of mountain celery, and help to achieve high-quality and efficient production of mountain celery.

[0122] The present invention takes into account the advantages of a three-dimensional soilless cultivation system with high land utilization rate and high yield per unit area, makes full use of the space of the cultivation rack, improves land utilization rate, and at the same time makes full use of the combination of automated control and human manipulation of resources such as water, fertilizer, and light to achieve a comprehensive improvement in the yield and quality of mountain celery. The whole set of equipment is more integrated, and is conducive to reducing production costs and facilitating later operation and maintenance management.

[0123] The specific embodiments described above only describe and illustrate the technical route and features of the present invention, and are intended to enable technical personnel to fully understand the present invention and implement it. However, the present invention is not limited to the above-mentioned specific implementation methods. Changes and modifications made without departing from the technical route and features of the present invention are all covered within the scope of protection of the present invention.

Claims

1. A three-dimensional soilless cultivation system for mountain celery, characterized in that: It comprises a support frame (1), a cultivation trough (2), a nutrient solution pool (3), a water pump (4), an ultraviolet disinfector (5), a light sensor (10), an artificial LED light source (11), a water inlet electromagnetic valve (13), a disc filter (24), and a water outlet electromagnetic valve (25); wherein: The support frame (1) is provided with multiple layers of cultivation troughs (2) in sequence from top to bottom, a light sensor (10) and an artificial LED light source (11) are provided in the support frame (1) above the topmost cultivation trough (2), and a light sensor (10) and an artificial LED light source (11) are provided in the support frame (1) between every two layers of cultivation troughs (2); The water outlet of the nutrient solution pool (3) is connected to the water inlet of the water pump (4), the water outlet of the water pump (4) is connected to the PPR water inlet pipe (6), and the PPR water inlet pipe (6) is provided with an ultraviolet disinfector (5), the PPR water inlet pipe (6) is connected to the water inlet of each cultivation trough (2) through a water inlet PVC hose (7), and a water inlet solenoid valve (13) is provided on the water inlet PVC hose (7) at each water inlet; The water return port of the nutrient solution pool (3) is connected to the water outlet of the disc filter (24) through a pipeline, and an ultraviolet disinfector (5) is provided on the pipeline; the water inlet of the disc filter (24) is connected to a PPR drainage pipe (26), and the PPR drainage pipe (26) is connected to the drainage port of each cultivation trough (2) through a drainage port PVC hose (12), and each drainage port PVC hose (12) is provided with a drainage port electromagnetic valve (25); an EC value detector (8) and a temperature detector (9) are provided in the nutrient solution pool (3).

2. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: The two ends of the cultivation trough (2) are respectively provided with fixed clamps (22), and the two ends of the cultivation trough (2) are respectively fixed to two corresponding support pipes of the support frame (1) through the fixed clamps (22).

3. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: A planting plate (14) is provided on the upper surface of each cultivation trough (2), and a water level limit probe (16) is provided inside each cultivation trough (2).

4. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: It also includes a timer (23), wherein each drain outlet solenoid valve (25) is electrically connected to the timer (23).

5. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: Universal wheels are respectively provided at the bottom of the support frame (1) and the bottom of the nutrient solution pool (3).

6. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: The outside of the nutrient solution pool (3) is covered with rubber and plastic heat-insulating cotton (21), and the top of the nutrient solution pool (3) is provided with a sliding cover plate (20).

7. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: The artificial LED light source (11) is a plate-type light source, a plurality of red LED lamp beads and a plurality of blue LED lamp beads are arranged on the light source plate, and the two ends of the light source plate are respectively fixed to the front and rear support tubes on both sides of the support frame (1).

8. The three-dimensional soilless cultivation system of mountain celery according to claim 1, characterized in that: The ultraviolet sterilizer (5) is a Lingzhuo UV-LZC ultraviolet sterilizer.

9. A method for three-dimensional soilless cultivation of wild celery using the three-dimensional soilless cultivation system of wild celery according to any one of claims 1 to 8, characterized in that: It includes the following: Step 1: Open the sliding cover (20), add nutrient solution into the nutrient solution pool (3), detect the EC value and temperature of the nutrient solution in the nutrient solution pool (3) through the EC value detector (8) and the temperature detector (9), and if the EC value and temperature of the nutrient solution in the nutrient solution pool (3) do not meet the requirements for crop growth, adjust the concentration and temperature parameters of the nutrient solution until the EC value and temperature of the nutrient solution in the nutrient solution pool (3) detected by the EC value detector (8) and the temperature detector (9) meet the required requirements; Step 2: Turn on the water pump (4) and the water inlet electromagnetic valve (13), sterilize the nutrient solution in the nutrient solution pool (3) through the ultraviolet sterilizer (5), and then transport it to each layer of the cultivation tank (2) through the PPR water inlet pipe (6) and the water inlet PVC hose (7); Step 3: The water level limit probe (16) in each layer of the cultivation trough (2) detects the water level of the nutrient solution in the cultivation trough (2). If the water level limit probe (16) detects the water level, the water pump (4) and the water inlet electromagnetic valve (13) are closed; Step 4: Wrap the base of the seedling with a planting sponge (15) and insert it into the planting hole of the planting plate (14), and fix the seedling in the cultivation trough (2); Step 5, according to the growth characteristics of the mountain celery, the number of different red and blue light beads on the artificial LED light source (11) is adjusted at different growth and development stages of the mountain celery, within 10 days of the planting of the mountain celery, the corresponding light beads are turned on at a ratio of 7:1 for supplementary light at the ratio of the number of red and blue light beads; from 10 days to 20 days after the planting of the mountain celery, the corresponding light beads are turned on at a ratio of 7:3 for supplementary light at the ratio of the number of red and blue light beads; after 20 days of the planting of the mountain celery, the corresponding light beads are turned on at a ratio of 3:5 for supplementary light at the ratio of the number of red and blue light beads; Step 6, when the nutrient solution needs to be replaced, the drain outlet solenoid valve (25) provided at the drain outlet of the cultivation trough (2) is opened, and the nutrient solution in the cultivation trough (2) flows through the disc filter (24) through the drain outlet PVC hose (12) and the PPR drain pipe (26), and after impurities and particles are removed, the nutrient solution is disinfected by the ultraviolet disinfector (5) and then returned to the nutrient solution pool (3) for reuse.

10. A three-dimensional soilless cultivation method for mountain celery according to claim 9, characterized in that: The timer (23) can be used to preset a time. When the preset time is reached, the operation of replacing the nutrient solution will be performed according to step six.

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