Method for planting hydroponic high-zinc barley grass

Abstract

The invention discloses a hydroponic high-zinc barley grass planting method, and belongs to the technical field of plant soilless culture. The planting method comprises the following steps: after a germination accelerating tank receives materials falling from a grain suction pipe and enters the germination accelerating tank, soaking water is used for carrying out wet-soaking and dry-soaking treatment on barley seeds, the soaking water in the tank body is discharged, the tank body sucks a zinc-containing solution for continuously soaking the seeds, and then barley straws subjected to seed soaking and germination accelerating are discharged to a tiling unit at the bottom of the germination accelerating tank; the seedling raising trays are sequentially conveyed among the tray overturning machine, the germination accelerating tank and the discharging side of the conveying line through the conveying line, and then are transferred to the planting frame through the CTU trolley for light supplementing and water supplementing; seedling raising trays bearing mature barley grass are discharged to the CTU trolley through the planting frame and transferred to the discharging side of the conveying line through the CTU trolley, the seedling raising trays are sequentially conveyed among the discharging side of the conveying line, the overturning discharging device and the tray overturning machine through the conveying line, and then the empty seedling raising trays are conveyed to the cleaning machine through the conveying line to be cleaned. The problem that existing hydroponic barley grass is low in zinc enrichment level and automation level is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of soilless culture of plants, and more particularly to a method for planting high-zinc barley grass by water culture. BACKGROUND

[0002] Currently, the problem of insufficient zinc intake exists widely around the world, and exploring an efficient way to supplement zinc has become an important issue to be solved. As an innovative means, biofortification technology can enrich trace nutrients or improve their bioavailability during the growth and development of organisms, thereby enhancing the nutritional value of organisms. With the help of this technology, inorganic zinc can be converted into organic zinc or biological zinc that is more easily absorbed by the human body. The zinc-enriched food cultivated in this way not only has high stability and strong safety, but also has the advantages of low price and outstanding zinc nutritional value. At present, the types of zinc-enriched products by biofortification are relatively rich, covering fungi (such as edible fungi and yeast), plants (such as fruits and vegetables, grains, tea leaves, sprouts, etc.). However, the supply of high-zinc meat and high-zinc dairy products is relatively short on the market. Under this background, the cultivation of high-zinc barley grass for feeding livestock and poultry, and the production of high-zinc livestock products show broad prospects for development. Water-cultured barley grass, as an innovative mode in the field of barley grass cultivation, can realize stable and efficient supply of fresh barley grass throughout the year with the help of advanced water culture technology. High-zinc barley grass has become a focus of attention and research in the industry due to its outstanding nutritional value.

[0003] Currently, the artificial light plant factory barley grass industry is facing four core bottleneck problems in the development process: first, the level of automatic intelligentization of equipment is low, which leads to the need for a large amount of manual intervention in the production process, increasing labor costs and greatly limiting the improvement of production efficiency; second, the overall operating cost is high, with high expenditure in energy consumption, labor, equipment maintenance, etc., which seriously compresses the profit space of the industry and restricts the scale development of the industry; third, the difficulty of technology popularization is high, which is affected by factors such as regional differences, enterprise size, and capital investment, and the relevant technology is difficult to quickly popularize and apply in different regions and different sizes of livestock and poultry enterprises; fourth, the zinc enrichment level is low, and the conversion level of inorganic zinc to organic zinc is low.

[0004] At the same time, with the continuous improvement of people's living standards, consumers' attention to food safety and nutritional quality is increasing, and the market demand for high-zinc livestock products is showing a sustained growth trend. However, the existing production mode is difficult to meet the market demand in terms of yield, quality, and efficiency, and the supply-demand contradiction is gradually highlighted. SUMMARY

[0005] 1. Technical problem to be solved by the present application

[0006] In view of the problems of low zinc enrichment level and low automation level of the prior art hydroponic barley grass, the application provides a hydroponic high-zinc barley grass planting method, which can improve the zinc content of barley grass, and can achieve low-area dense planting and fully automated production.

[0007] 2. Technical scheme

[0008] To achieve the above-mentioned purposes, the technical scheme provided by the application is as follows:

[0009] A hydroponic high-zinc barley grass planting method, the steps are as follows:

[0010] Seed soaking and germination: after the germination tank is connected to the suction pipe and the material is fed into the inside of the germination tank, the soaking water is used for wet-dry soaking treatment of the barley seeds, so that the barley seeds in the germination tank reach the germination and white appearance state, the tank body soaking water is discharged, the tank body sucks in the zinc-containing solution to continue seed soaking for 6-10h, and then the barley grass after seed soaking and germination is discharged to the bottom of the germination tank and is laid on the bottom unit;

[0011] Seedling raising: the seedling tray is sequentially transferred between the turnover machine, the germination tank and the discharge side of the conveying line through the conveying line, and is temporarily stopped through the corresponding position sensor sensing point, respectively completing turnover, material laying and CTU trolley receiving seedling tray, and then is transferred to the planting frame by the CTU trolley for light supplementing and water supplementing until the barley grass is mature;

[0012] Seedling emergence: the seedling tray carrying the mature barley grass is discharged from the planting frame to the CTU trolley, and is transferred to the discharge side of the conveying line by the CTU trolley, the seedling tray is sequentially transferred between the discharge side of the conveying line, the turnover and discharge device and the turnover machine through the conveying line, and is temporarily stopped through the corresponding position sensor sensing point, respectively completing conveying line receiving, material turnover to receiving trolley and turnover, and then the seedling tray conveying the empty tray is conveyed to the cleaning machine by the conveying line for cleaning treatment.

[0013] Further planting method, the temperature of wet-dry soaking in the germination tank is maintained at 20-35℃, and the processing steps are as follows:

[0014] In the wet soaking process, the effective chlorine content is 200-350mg / L, and the soaking time is 4-6h, so that the seeds are fully soaked and disinfected at the same time, and the mold activity is killed or inhibited;

[0015] In the dry soaking process, the soaking water of wet soaking is completely discharged, the top is sprayed by the spraying assembly every 1.0-1.5h for 30-60s, and the process is continued for 6-10h;

[0016] The spraying solution is a ZnSO4·7H2O solution with a concentration of 200-300mg / L;

[0017] Different from the conventional water culture of barley grass, the dry soaking process reduces the soaking time of the seeds, is suitable for four seasons of production operation, and avoids the fermentation reaction caused by the anaerobic respiration of the seeds; when the water absorption rate of the barley grass is greater than or equal to 40%, the barley embryo starts to germinate; in the dry soaking process, the aeration system performs high-pressure aeration on the seed soaking and germination through the aeration pipe and the aeration head, increases the contact area between the seeds and the oxygen, and performs sufficient aeration and blowing cooling.

[0018] Further planting method, the germination tank is provided with an exhaust pipe and an overflow pipe;

[0019] In the wet soaking process, water is supplemented 2-3 times, and floating impurities are discharged through overflow of the overflow pipe to further reduce the pollution source;

[0020] In the dry soaking process, the exhaust pipe is used to make the air in the tank flow to take away the heat and carbon dioxide generated by the seed respiration.

[0021] Further planting method, in the light supplementing and water supplementing steps of the planting frame:

[0022] Light supplementing: light supplementing is performed through the light supplementing lamp;

[0023] Water supplementing: water supplementing is performed through spraying.

[0024] Further planting method, the light supplementing lamp includes a blue light supplementing lamp and a red light supplementing lamp;

[0025] The blue light supplementing lamp is a light supplementing lamp composed of blue and white lamp beads, and is configured with a light spectrum ratio of R:B:G=3:3:4 to perform blue light culture on the barley grass in the seedling tray;

[0026] The red light supplementing lamp is a light supplementing lamp composed of red and white lamp beads, and is configured with a light spectrum ratio of R:B:G=4.5:1.5:4 to perform red light culture on the barley grass in the seedling tray.

[0027] Further planting method, the blue light culture lasts for 2 days, and the light supplementing time is 4-6 hours per day;

[0028] The red light culture lasts for 5 days, and is divided into two stages, the red light I culture lasts for 3-4 days, and the light supplementing time is 6-8 hours per day; the red light II culture lasts for 5-7 days, and the light supplementing time is 8-10 hours per day.

[0029] Further planting method, water supplementing is performed through the spraying oscillating water pipe, the oscillating frequency is 5-8 times per minute, and the oscillating spraying is comprehensive and uniform;

[0030] Further planting method, the environment temperature of the planting frame is maintained at 20-35°C to ensure the suitable growth temperature of the barley grass.

[0031] 3、Beneficial effects

[0032] Compared with the prior art, the technical scheme provided by the application has the following beneficial effects:

[0033] (1) The water-cultivated high-zinc ryegrass planting method of the application breaks through the limitation of the traditional ryegrass planting mode, combines the multi-layer planting rack water-cultivation technology with the zinc element biological conversion technology, and constructs a standardized technical system for large-scale automated production of high-zinc ryegrass; the large-scale and stable production of ryegrass rich in organic zinc can be realized, and the problems of low yield and unstable quality of high-zinc ryegrass in the traditional production mode are solved; and through the biological conversion of inorganic zinc by ryegrass, the utilization rate of zinc elements is greatly improved, the defects of low absorption efficiency and serious waste in the traditional inorganic zinc addition mode are avoided, and the production cost is reduced;

[0034] (2) The water-cultivated high-zinc ryegrass planting method of the application can realize the spatial modal low-area dense planting of ryegrass through the multi-layer structure of the planting rack, and the conveying line, the cleaning machine, the turning machine, the germination tank, the CTU trolley, the planting rack and the turnover discharge device are coordinated, so that the automatic degree is high, the whole process automated planting and production of water-cultivated ryegrass can be realized, even without manual production, the production efficiency is high, and the cost is low;

[0035] (3) The water-cultivated high-zinc ryegrass planting method of the application realizes the automatic turnover and transmission of the empty tray, reduces the labor cost, and improves the production efficiency and turnover precision;

[0036] (4) The water-cultivated high-zinc ryegrass planting method of the application realizes the automatic turnover and transmission of the empty tray, reduces the labor cost, and improves the production efficiency and turnover precision;

[0037] (5) The water-cultivated high-zinc ryegrass planting method of the application can utilize the gravity of the material itself for the discharging operation in the germination tank; this discharging mode can not only effectively reduce the residue of the material after discharging, but also does not need additional conveying mechanism and will not cause extrusion damage to the material;

[0038] (6) The water-cultivated high-zinc ryegrass planting method of the application can realize the simultaneous linkage type comprehensive and uniform water supplement of the ryegrass in the whole layer rack through the cooperative action of the spraying vertical plate in the planting rack and the swing crank, the telescopic piece and the transmission push rod in the swing assembly, meets the requirement of the consistency of the growth factors such as environment (light, water, etc.), space, etc. of the ryegrass in the whole layer rack in the planting process, reduces the labor participation in the plant production process, and can realize the automatic light supplement, water supplement, drainage, feeding, transportation and growth data detection, etc. in the whole growth process from the seed to the finished product;

[0039] (7) The water-cultivated high-zinc barley grass planting method of the present application precisely controls the concentration and application method of the high-zinc solution, and efficiently converts inorganic zinc into organic zinc by means of the biological conversion capacity of barley grass, greatly improving the utilization rate of zinc elements (compared with traditional direct addition of inorganic zinc, avoiding the defects of low absorption efficiency and serious waste), while reducing the cost of manual intervention and reducing the overall production investment;

[0040] (8) The water-cultivated high-zinc barley grass planting method of the present application provides high-quality and stable organic zinc barley grass raw materials for high-zinc livestock product (such as high-zinc meat and high-zinc milk) production, helps the livestock industry to transform from traditional extensive breeding to high-value-added and high-quality fine industrial chain, meets the needs of consumers for food safety and nutritional health, enhances the market competitiveness of livestock products, and promotes the coordinated development of barley grass and livestock industry. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a perspective view of a water-cultivated high-zinc barley grass planting production line of a specific embodiment;

[0042] Figure 2 is a side view structural schematic diagram of Figure 1 ;

[0043] Figure 3 is a top view structural schematic diagram of Figure 1 ;

[0044] Figure 4 is a front view schematic diagram of Figure 1 ;

[0045] Figure 5 is a front view schematic diagram of a conveying line of a specific embodiment;

[0046] Figure 6 is a top view schematic diagram of Figure 5 ;

[0047] Figure 7 is a top view schematic diagram of a turning machine of a specific embodiment;

[0048] Figure 8 is an axial view schematic diagram of a turning machine of a specific embodiment;

[0049] Figure 9 is a front view schematic diagram of a turning machine (turning arm zero position) of a specific embodiment;

[0050] Figure 10 is an axial view schematic diagram of a turning and discharging device of a specific embodiment;

[0051] Figure 11 is a front view schematic diagram of a turning and discharging device of a specific embodiment;

[0052] Figure 12Fig. 1 is a top view of a flip-out device according to an embodiment of the present application;

[0053] Figure 13 Fig. 2 is a side view of a flip-out device according to an embodiment of the present application (flip-out arm zero position);

[0054] Figure 14 Fig. 3 is an axonometric view of a planting rack according to an embodiment of the present application;

[0055] Figure 15 Fig. 4 is a side view of a planting rack according to an embodiment of the present application; Figure 14

[0056] Fig. 5 is a front view of a planting rack according to an embodiment of the present application; Figure 16 Figure 14 Fig. 6 is a side view of a planting rack according to an embodiment of the present application;

[0057] Figure 17 Figure 14 Fig. 7 is a side view of a planting rack according to an embodiment of the present application (A portion);

[0058] Figure 18 Fig. 8 is a side view of a planting rack according to an embodiment of the present application (opposite side upper portion); Figure 15

[0059] Fig. 9 is a side view of a planting rack according to an embodiment of the present application (B portion); Figure 19 Figure 15 Fig. 10 is a side view of a planting rack according to an embodiment of the present application (C portion);

[0060] Figure 20 Figure 19 Fig. 11 is a side view of a planting rack according to an embodiment of the present application (D portion);

[0061] Figure 21 Fig. 12 is a side view of a planting rack according to an embodiment of the present application (spray vertical plate);

[0062] Figure 22 Fig. 13 is a side view of a planting rack according to an embodiment of the present application (water supply pipe);

[0063] Figure 23 Fig. 14 is a side view of a planting rack according to an embodiment of the present application (germination pot structure);

[0064] Figure 24 Fig. 15 is a side view of a planting rack according to an embodiment of the present application (spray assembly structure);

[0065] Figure 25 Fig. 16 is a side view of a planting rack according to an embodiment of the present application (flat laying unit structure);

[0066] Figure 26 Fig. 17 is a graph showing the average weight of high-zinc barley produced by a hydroponic high-zinc barley planting method according to an embodiment of the present application;

[0067] Figure 27 Fig. 18 is a graph showing the zinc content of high-zinc barley produced by a hydroponic high-zinc barley planting method according to an embodiment of the present application.

[0068] BRIEF DESCRIPTION OF DRAWINGS: 1, washing machine; 5, receiving vehicle; 6, CTU trolley; 8, seedling tray;​​​​

[0069] 2, turn the machine; 21, mounting seat; 22, support A; 23, motor A; 24, shaft coupling A; 25, bearing pair A; 26, shaft A; 27, turn the arm; 28, hall probe A; 29, vertical plate; 271, angle steel plate; 272, turn the plate; 291, waist-shaped hole A.

[0070] 3, conveying line; 30, support; 31, chain wheel chain pair; 32, sensor; 33, carrier plate; 34, limit block;

[0071] 4, turn the discharge device; 41, rack; 42, turn the assembly; 43, drive assembly; 411, mounting plate; 412, support B; 421, turn the plate; 422, bearing pair B; 423, main shaft; 424, turn the arm; 425, cylinder; 426, arm plate; 427, crossbeam; 428, hall probe B;

[0072] 7, planting frame; 71, telescopic piece; 72, swing crank; 73, transmission push rod; 74, light supplementing lamp; 75, spraying swing water pipe; 76, composite lower water crossbeam; 78, drainage mechanism; 79, bearing pair C; 710, layer frame; 721, waist-shaped hole B; 731, guide sleeve; 732, shaft B; 750, water outlet head; 751, water delivery pipe; 752, quick connector; 753, spraying vertical plate; 781, backwater pipe; 782, connecting pipe; 783, water outlet pipe; 784, drainage groove; 101, adjusting hole;

[0073] 9, germination tank; 90, vertical support frame; 91, flat unit; 92, germination tank body; 93, grain suction pipe; 94, feed hopper; 95, spraying assembly; 96, aeration pipe; 97, exhaust pipe; 98, overflow pipe; 99, discharge hopper; 911, material receiving port; 912, material receiving hopper; 913, material conveying belt; 951, spraying ring pipe; 952, connecting rod; 953, spraying head; 954, spraying main pipe. DETAILED DESCRIPTION

[0074] In order to further understand the content of the present application, the application will be described in detail in conjunction with the drawings.

[0075] Example 1

[0076] The water culture high-zinc barley grass planting method of the present embodiment is automatically produced through a barley grass planting production line, like Figure 1 、 2As shown in FIGS. 1, 2, 3, 4, the production line comprises a control system, a conveying line 3, a cleaning machine 1, a tray turning machine 2, a germination tank 9, a CTU trolley 6, a planting rack 7, and a turnover discharge device 4. The conveying line 3 is opposite to the outlet of the cleaning machine 1, and the bottom of the germination tank 9 is flat and is opposite to the conveying surface of the conveying line 3. The tray turning machine 2 is installed beside the conveying line 3 between the cleaning machine 1 and the germination tank 9. The turnover discharge device 4 is installed beside the conveying line 3 outside the germination tank 9. The cleaning machine 1 is used to clean the empty seedling tray 8. The conveying line 3 reciprocates to receive the seedling tray 8 cleaned by the cleaning machine 1 or to send the seedling tray 8 discharged by the turnover discharge device 4 to the cleaning machine 1 for cleaning. The tray turning machine 2 turns the seedling tray 8 before or after cleaning on the conveying line 3. The barley grass is soaked, germinated, and laid in the seedling tray 8 in the germination tank 9. The CTU trolley 6 transfers the seedling tray 8 discharged from the germination tank 9 to the planting rack 7. After the barley grass matures, the seedling tray 8 is discharged from the planting rack 7 to the conveying line 3. The planting rack 7 automatically supplements light and water for the barley grass in the seedling tray 8. The turnover discharge device 4 turns over the mature barley grass in the seedling tray 8 to the receiving trolley 5.

[0077] The cleaning machine 1 is an automatic cleaning device for the seedling tray invented by the applicant (patent application number 2025223078589). It comprises a rack and a cleaning box arranged on the rack. The cleaning box is provided with a conveying mechanism, a high-pressure flushing assembly, and a low-pressure flushing assembly. The conveying mechanism is used to carry and convey the seedling tray 8. The high-pressure flushing assembly comprises a first water jet pipe, which is provided with a plurality of assembly holes along the axial direction. The assembly holes are provided with first nozzles or plugs. The low-pressure flushing assembly comprises a second water jet pipe and a plurality of second nozzles arranged on the second water jet pipe. The second water jet pipe has an overall annular structure and surrounds the seedling tray 8. The high-pressure flushing assembly is used to accurately flush the holes of the seedling tray 8 to ensure that the impurities wound in the holes can be flushed first. Then, the low-pressure flushing assembly is used to flush the seedling tray 8 in all directions to effectively improve the flushing effect of the seedling tray 8. The specific structure is not described again.

[0078] The germination tank 9 comprises a vertical support frame 90, a germination tank body 92, a grain suction pipe 93, a feeding hopper 94, a spraying assembly 95, an aeration pipe 96, an exhaust pipe 97 and an overflow pipe 98; the vertical support frame 90 is supported at the bottom on both sides of the support; the germination tank body 92 is fixedly connected to the inside of the vertical support frame 90; the grain suction pipe 93 is fixedly connected to the upper part of the vertical support frame 90 and is connected with a barley seed tank; the feeding hopper 94 is connected to the upper part of the germination tank body 92 and receives the grain falling from the grain suction pipe 93; the spraying assembly 95 comprises a spraying main pipe 954, a spraying ring pipe 951, a connecting rod 952 and a spraying head 953; the spraying main pipe 954 is communicated with and connected to the spraying ring pipe 951 and is connected with a high-pressure water source, usually a water pump; the spraying ring pipe 951 is connected to the inner wall of the germination tank body 92 through the connecting rod 952, and the spraying head 953 is communicated with and connected to the pipe wall of the spraying ring pipe 951; the spraying head 953 is uniformly distributed along the ring pipe body and sprays the barley seeds in the tank through the spraying head 953; the aeration pipe 96 is fixedly connected to the outside of the germination tank body 92 and is communicated with the inside of the germination tank body 92 through the branch pipes surrounding the tank body and is connected with a high-pressure gas source to fill the tank with gas; the exhaust pipe 97 is fixedly connected to the outside of the germination tank body 92 and is communicated with the bottom of the germination tank body 92 through the exhaust end below and is connected with a fan to exhaust the gas outside the tank; the overflow pipe 98 is fixedly connected to the outside of the germination tank body 92 and is communicated with the upper part of the germination tank body 92 through the water outlet above and overflows the water outside the tank.

[0079] The bottom of the germination tank 9 is fixedly connected with the flat laying unit 91 through the discharge hopper 99, and the flat laying unit 91 comprises a receiving hopper 912 and a laying conveying belt 913; the receiving hopper 912 is fixedly connected to the vertical support frame 90, and the upper receiving port 911 is fixedly connected with the discharge hopper 99; the laying conveying belt 913 is fixedly connected to the vertical support frame 90, and the laying port below the receiving hopper 912 is opposite to the working surface of the laying conveying belt 913, and the discharge side of the laying conveying belt 913 is opposite to the seedling tray on the working surface of the conveying line. The germination tank body 92 is vertically placed as a whole, and the natural discharge can be realized by using the gravity of the material itself; the discharge port of the discharge hopper 99 falls and accumulates the seeds on the laying conveying belt 913, and the seeds are quantitatively output through the laying port and are flatly laid in the seedling tray 8 on the carrier plate 33 after germination.

[0080] The CTU car 6 is an existing (Container Transfering Unit) car 6.

[0081] The control system is a prior art, and the specific principle and structure will not be described.

[0082] As Figure 5 , 6As shown, the conveying line 3 is a double-row chain conveying line 3, which comprises a support 30, a chain wheel and chain pair 31, a sensor 32 and a carrier plate 33; the chain wheel and chain pair 31 is two parallel chains, which are reciprocatingly connected to the surface of the support 30, and the carrier plate 33 is connected to the bearing surface of the chain wheel and chain pair 31; the sensor 32 is fixedly connected to the side surface of the support 30. The sensor 32 has four station sensing points, which correspond to the tray turning machine 2, the germination tank 9, the barley grass turning and discharging device 4 and the discharging side of the conveying line 3 respectively; the support 30 is fixedly connected with a limiting block 34 at both ends. The carrier plate 33 is fixed on the chain and reciprocates with the chain, and a metal sheet is arranged on the side surface of the carrier plate 33; four sensor 32 mounting seats are arranged on the side surface of the support 30 body, and four metal sensors 32 are mounted on the mounting seats; the carrier plate 33 stops moving at the specified position through the sensing of the sensor 32, and the carrier plate 33 reciprocates under the action of the motor of the chain wheel and chain pair 31; when the carrier plate 33 moves, the seedling tray 8 is driven to move to each station to work.

[0083] As shown in Figure 7 、 8 , the tray turning machine 2 comprises a mounting seat 21, a support A 22, a motor A 23, a rotating shaft A 26 and a turning arm 27; the mounting seat 21 is installed on both sides of the support 30 after spanning the support 30; the support A 22 is fixedly connected to the side surface of the mounting seat 21; the motor A 23 is fixedly connected to the outer side surface of the support A 22; the rotating shaft A 26 is rotatably connected to the surface of the mounting seat 21; the turning arm 27 has a fixed end fixedly connected to the rotating shaft A 26 and a free end in the shape of a clamping opening, which is used to clamp the empty seedling tray 8; the output end of the motor A 23 is rotatably connected with the rotating shaft A 26 through a shaft coupling A 24. In the specific use process, the motor A 23 first drives the turning arm 27, aligns the clamping opening with the feeding end, and then drives the turning arm 27 to turn 180 degrees, so that the empty seedling tray 8 is conveyed to the germination tank 9 through the conveying line 3 for germination and discharging operation, which can realize automatic conveying without manual operation.

[0084] The barley grass turning and discharging device 4, as shown in Figure 10 、 11As shown in Figures 12 and 13, the system includes a frame 41, a support B412, a flipping assembly 42, and a drive assembly 43. The bottom frame of the frame 41 extends into the bottom space of the support 30, facilitating the operation of the flipping assembly 42 above the double-row chain conveyor line 3. The bracket B412 is fixedly connected to the side of the frame 41; the flipping assembly 42 includes a flipping plate 421, a bearing pair B422, a main shaft 423, and a flipping arm 424; the main shaft 423 is rotatably connected to the frame 41 through the bearing pair B422, the bearing pair B422 includes a bearing and a matching bearing seat, the bearing seat is fixedly connected to the side of the frame 41, leaving space above the frame 41 for the conveyor line 3, so that after the flipping arm 424 flips, it can pick up the seedling tray 8 on the carrier plate 33 of the material conveyor line 3; the main shaft 423 is tightly fitted to the bearing; the flipping plate 421 is fixedly connected to the end of the main shaft 423, and the flipping arm 424 is fixedly connected to the flipping plate 421, usually detachably connected to the side of the flipping plate 421; the drive assembly 43 is mounted on the bracket B412, and its output end is connected to the main shaft 423 through a coupling B; the drive assembly 43 includes a motor and a matching reducer. In practical use, the conveyor line 3 transfers the seedling tray 8 to the underside of the tilting arm 424. The motor drives the tilting arm 424 to tilt to both sides of the seedling tray 8. After the tilting arm 424 holds the seedling tray 8 tightly, the motor drives the tilting arm 424 to tilt 180 degrees, turning the seedling tray 8 onto the receiving cart 5 next to the frame 41. The motor then drives the tilting arm 424 to rotate 180 degrees, turning the empty tray onto the carrier plate 33 of the conveyor line 3. This can achieve automated operation, high production efficiency, and reduced labor costs.

[0085] like Figure 14 , 15 As shown in Figures 16, 18, and 19, the planting rack 7 includes a tiered frame 710, seedling trays 8, a spray oscillating water pipe 75, supplemental lighting 74, an oscillating assembly, and a drainage mechanism 78; the tiered frame 710 is assembled from 304 stainless steel and includes multiple layers of platforms, typically at least three layers. Figure 14 The planter has eight layers, with the shelves 710 fixedly connected by vertical columns 2. The height of each layer is adapted to the height of the barley grass. The seedling trays 8 are made of PP material and are placed side by side on the upper surface of the platform. PP material is waterproof and rustproof. All other accessories of the entire planting rack 7 are made of stainless steel or PE material to prevent the entire planting rack 7 from rusting and to improve its service life. The swing assembly is fixedly connected to the side of the shelf 710. The supplemental lights 74 are fixedly connected side by side to the lower surface of the platform, above each seedling tray 8. The spray swing water pipes 75 are connected to an external high-pressure water source, usually a water tank connected to an external high-pressure water pump. The shelf 710 also includes a composite drainage beam 76 that supports the platform. The shelves 710 are supported by stainless steel diagonal braces to increase strength.

[0086] The light supplementing lamp 74 comprises a blue light supplementing lamp and a red light supplementing lamp; the blue light supplementing lamp is a light supplementing lamp composed of blue and white lamp beads, and the red light supplementing lamp is a light supplementing lamp composed of red and white lamp beads.

[0087] As shown in Figure 19 , 20 , the swing assembly comprises a swing crank 72, a telescopic member 71 and a transmission push rod 733; the telescopic member 71 is fixedly connected to the top of the layer rack 710, such as a telescopic electric cylinder, a pneumatic cylinder or a hydraulic cylinder, preferably a telescopic electric cylinder, which facilitates electric automatic telescoping, and the output end of the telescopic electric cylinder is fixedly connected with the transmission push rod 733; the transmission push rod 733 has a rotating shaft B732 fixedly connected to the rod body, and the handle body of the swing crank 72 is provided with a waist-shaped hole B721, and the rotating shaft B732 is slidingly connected in the waist-shaped hole B721; as shown in Figure 21 , 22 , the spraying swing water pipe 75 comprises a water conveying pipe 751, a quick connector 752 and a spraying vertical plate 753; the two ends of the water conveying pipe 751 are transversely inserted out of the layer rack 710, one end is fixedly connected with the swing crank 72, and the other end is externally connected with a high-pressure water source, which can supplement nutrient solution for barley grass; the pipe body of the water conveying pipe 751 is provided with a water outlet head 750, the water outlet head 750 is connected with the spraying vertical plate 753 through the quick connector 752, and the spraying vertical plate 753 swings forward and backward above the seedling tray 8 to uniformly supplement water for the barley grass. The swing assembly is preferably two sets arranged side by side, and the spraying swing water pipes 75 above the seedling trays 8 of the corresponding layers of platforms are also two sets. The spraying vertical plate 753 is a triangular plate, preferably an isosceles triangular plate, which plays a role in fan-surface swing water supplementing.

[0088] The layer rack 710 is fixedly connected with a guide sleeve 731, and the free end of the transmission push rod 733 is downwardly inserted into the guide sleeve 731 and slidingly connected in the guide sleeve 731 to guide the swing movement upward and downward and avoid deviation.

[0089] Each layer of planting layer is provided with corresponding spraying swing water pipes 75, drainage mechanisms 78 and light supplementing lamps 74. The driving end of the telescopic electric cylinder is connected with the transmission push rod 733 through internal and external threads, the rotating shaft B732 welded to the upper end of the transmission push rod 733 is slidingly connected in the waist-shaped hole B721 of the swing crank 72, the other end of the swing crank 72 is threadedly connected with the water conveying pipe 751, the swing crank 72 and the water conveying pipe 751 of the spraying swing water pipe 75 are driven by a flat key, and the water conveying pipe 751 is fixed to the layer bottom of each layer of planting layer by a bearing pair C79, which comprises two bearing seats and corresponding bearings, and the bearing seats are fixed to the side surface of the layer rack 710 by bolts.

[0090] As shown in Figure 17As shown, the drainage mechanism 78 includes a backwater pipe 781, a connecting pipe 782 and a water outlet pipe 783, the backwater pipe 781 is fixedly connected to the stand, the water outlet pipe 783 is connected to and communicates with the bottom of the seedling tray 8; the backwater pipe 781 is connected to and communicates with the water outlet pipe 783 through the connecting pipe 782; the bottom end of the backwater pipe 781 is externally connected to a drainage point, and surplus water is drained in time.

[0091] Preferably, the drainage mechanism 78 further includes a drainage groove and a inclined tee joint integrally welded with each platform layer plate, the end of the drainage groove is provided with the water outlet pipe 783, the connecting pipe 782 is preferably a hose, and the drainage is connected to the backwater pipe 781 provided on the side of the planting frame 7 through the hose; the backwater pipe 781 is provided with a inclined tee joint at a position of each layer, and the end of the drainage groove is connected to the water outlet pipe 783 through the connecting hose.

[0092] The seedling tray 8 has a whole rectangular shape, the bottom of the seedling tray 8 is in a slope shape, the end of the slope-shaped bottom is provided with a drainage port, the drainage port is externally connected to a drainage groove, there are at least 5 drainage ports, and the drainage ports are opposite to the drainage groove; the unabsorbed water in the seedling tray 8 after spraying irrigation leaks into the drainage groove through the drainage ports, and is drained into an underground drainage channel through the water outlet pipe 783 of the drainage groove and the backwater pipe 781.

[0093] Each layer of the layer frame 710 includes at least 6 barley straw light supplement lamps 4, which are longitudinally distributed and uniformly distributed around the center of the seedling tray 8, and are fixed on the bottom reinforced beam of the last layer platform through the lamp buckle and the bolt.

[0094] Four weighing sensors symmetrically fixedly connected between the connecting surfaces of the four corners of the feeding hopper 94 and the vertical support frame 90 are used for weighing and quantitatively feeding, and a discharging plug valve is arranged below the feeding hopper 94; two symmetrical visual observation windows are arranged in the tank body of the germination tank body 92, and the visual observation windows are sealed by sight glasses, so that the internal state is observed; a climbing ladder is fixedly connected to the vertical support frame on the outside of the germination tank body 92, which is used for climbing and cleaning; support blocks are fixedly connected to the bottom ends of the four columns of the vertical support frame 90, expansion bolt through holes for fixing to the ground and jacking bolt holes for adjusting the height and levelness of the vertical support frame 90 are arranged around the support blocks.

[0095] The water culture barley straw production method of the embodiment includes the following steps:

[0096] Step one, cleaning and seed selection: select the current year's seeds, which are fully mature, have full and round grains, and are uniform in size, and remove burrs, seed coats, weeds and other impurities by air selection;

[0097] Step two, tank feeding: the barley seeds are conveyed to the seed tank by the grain suction machine and consumed within 3-6 months; the vertical seed tank effectively isolates the humidity from the outside, and the built-in ventilation system can effectively ensure the seed viability and prolong the seed storage time;

[0098] Step three, grain suction into tank: the barley seeds in the tank are accurately and quantitatively put into the germination tank 9 through the grain suction pipe 93 and the weighing sensor 32;

[0099] Step four, seed soaking and germination: after the material in the suction pipe 93 falls into the inside of the germination tank 9 through the feeding hopper 94, the barley seeds are subjected to wet-dry soaking treatment to achieve the germination and whitening state, the soaking water in the tank is discharged, the tank sucks in zinc-containing solution for 6-10 hours of seed soaking, and then the barley grass after seed soaking and germination is discharged to the bottom of the germination tank 9 and laid on the laying unit 91; wherein the tank sucks in zinc-containing solution through the spraying assembly to spray the top every 1.0-1.5 hours for 30-60 seconds, which lasts for 6-10 hours, and the spraying solution is ZnSO4·7H2O solution with a concentration of 200-300 mg / L;

[0100] Step five, tray loading: the laying conveying belt 913 is started, the laying conveying belt 913 quantitatively outputs the barley grass after germination to the seedling tray 8 on the carrier plate 33 through the laying opening to complete the laying; by adjusting the discharge height, width and running speed of the laying conveying belt 913 of the laying unit 91, the loading weight is controlled to be 1±0.1 kg;

[0101] Step six, seed shelf: the seedling tray 8 with laid seeds is automatically transported to the discharge side through the conveying line 3, the seedling tray 8 is received by the CTU trolley 6, and then the seedling tray 8 is transferred to the planting shelf 7 by the CTU trolley 6; the surrounding environment of the planting shelf 7 is controlled at 15-25℃, and an air exchange system is arranged in the room to realize air circulation and replacement;

[0102] Step seven, blue light culture: the barley grass in the seedling tray 8 is subjected to blue light culture; and the spraying of the spraying assembly 95 is used for water replenishment;

[0103] Step eight, red light culture: the barley grass in the seedling tray 8 is subjected to red light culture; and the spraying is used for water replenishment;

[0104] Step nine, fresh grass sampling inspection: the detection contents include the moldy condition of the barley grass, the qualified rate, the planting ratio (fresh grass / dry seeds), and the sampling test of mold toxin in the moldy area. The fresh grass sampling inspection is the basis for self-adjustment. When the growth of the barley grass does not reach the expected speed, the environmental temperature can be increased, the light supplement time can be increased, and other operations can be performed for adjustment; when the growth speed of the barley grass is fast but the moldy proportion is high, the environmental temperature can be reduced, the light supplement time can be reduced, the air exchange can be increased, and other operations can be performed for adjustment; compared with the conventional water culture method of barley grass culture, the adjustment is more flexible and more convenient;

[0105] Step ten, fresh grass unloading: unload from the planting frame 7 to the CTU trolley 6, and transfer to the conveying line 3 discharge side, and then convey to the turnover discharge device 4 sensor sensing point, control system control conveying line 3 pause, and then the turnover discharge device 4 turns over the mature barley grass in the seedling tray 8 to the receiving vehicle 5, and then the control system controls the conveying line 3 to start, and then the empty tray seedling tray 8 is conveyed to the turnover machine 2 sensor sensing point through the conveying line 3, and then the control system controls the conveying line 3 to pause, and then the turnover machine 2 turns over the seedling tray 8 to the reverse side;

[0106] Step eleven, seedling tray 8 cleaning: control system control conveying line 3 start, the inverted seedling tray 8 is conveyed to the cleaning machine 1 for cleaning treatment, and then the empty tray seedling tray 8 is conveyed to the sensor sensing point of the turnover machine 2 through the conveying line 3, and then the control system controls the conveying line 3 to pause, and then the seedling tray 8 on the carrier plate 33 stops, and then the turnover machine 2 turns over the seedling tray 8 to the front side, and then the control system controls the conveying line 3 to start, and then the seedling tray 8 is conveyed to the sensor sensing point of the germination tank 9.

[0107] The automatic control process of the whole production line and production method is as follows:

[0108] Seed soaking and germination: after the germination tank is connected to the suction pipe and the material is discharged into the inside of the germination tank, the soaking water is used for wet-dry soaking treatment of the barley seeds, so that the barley seeds in the germination tank reach the germination and white appearance state, the tank body soaking water is discharged, the tank body sucks in the zinc-containing solution for 6-10h of seed soaking, and then the barley grass after seed soaking and germination is discharged to the tank bottom paving unit;

[0109] Seedling: the conveying line 3 is positively rotated, the empty tray seedling 8 tray after cleaning treatment of the cleaning machine 1 is conveyed to the sensor sensing point of the turnover machine 2 through the conveying line 3, and then the control system controls the conveying line 3 to pause, and then the seedling tray 8 on the carrier plate stops, and then the turnover machine 1 turns over the seedling tray 8 to the front side, and then the control system controls the conveying line 3 to start, and then the seedling tray 8 is conveyed to the sensor sensing point of the germination tank 9, and then the control system controls the paving conveyor belt 913 to start, and then the paving conveyor belt 913 quantitatively outputs the barley grass after germination to the seedling tray 8 on the carrier plate 33 through the paving port, and then the paving is completed, and then the control system controls the paving conveyor belt 913 to pause, and then during the paving process, the paving conveyor belt 913 and the conveying line 3 are coordinated, and the automatic paving in the seedling tray 8 is realized by using the material gravity difference and the conveying speed difference; the conveying line 3 continuously runs during the paving process, and then the seedling tray 8 is conveyed to the sensor sensing point of the conveying line 3 discharge side, and then the control system controls the conveying line 3 to pause, and then the seedling tray 8 is received by the CTU trolley 6, and then the seedling tray 8 is transferred to the planting frame 7 for automatic light and water supplement until the barley grass is mature;

[0110] The mature barley grass in the seedling tray 8 is discharged from the planting frame 7 to the CTU trolley 6, and then transferred from the CTU trolley 6 to the discharge side of the conveying line 3. The conveying line 3 is conveyed to the sensor sensing point of the turnover discharge device 4. The control system controls the conveying line 3 to pause. The turnover discharge device 4 discharges the mature barley grass in the seedling tray 8 to the receiving vehicle 5. The control system controls the conveying line 3 to start. The empty seedling tray 8 is conveyed by the conveying line 3 to the sensor sensing point of the tray turnover machine 2. The control system controls the conveying line 3 to pause. The tray turnover machine 2 turns over the seedling tray 8 to the reverse side. The control system controls the conveying line 3 to start. The seedling tray 8 is conveyed by the conveying line 3 to the cleaning machine 1 for cleaning treatment. The control of the conveying belt in the cleaning machine 1 only needs to be reciprocated, and a sensor 32 does not need to be installed. When the conveying belt of the cleaning machine 1 is positively rotated to the end position, the cleaning process is completed. The retreat to the outlet is the drying process after cleaning. The positive rotation control can be controlled by the back-and-forth movement time of the control motor. Each time the machine is started, only the control of the original point, the number of positive rotation circles, the pause time, and the number of reverse rotation circles needs to be determined, and then the control is transmitted to the tray turnover position of the tray turnover machine 2.

[0111] The above steps can be recycled until the planting frame 7 completes the automatic feeding and discharging.

[0112] Embodiment 2

[0113] The water culture high-zinc barley grass production line and the planting method of the embodiment are different from or improved from the embodiment 1 in that:

[0114] The motor A23 of the tray turnover machine 2 is an 86-step motor, and the output end is matched with a precision planetary reducer. The coupling A24 is a plum coupling. The bearing pair A25 includes a UCP205 bearing seat and a matching bearing. The center of the turnover plate 272 is a tightly fitted expansion sleeve. The turnover plate 272 is tightly fitted and connected with the rotating shaft A26 through the expansion sleeve. The output end of the 86-step motor is connected with the input end of the precision planetary reducer. The output end of the precision planetary reducer is connected with the rotating shaft A26 through the plum coupling A24. The precision planetary reducer is fixed on the mounting seat 21 through the bevel planetary reducer support A22. The mounting seat 21 is transversely arranged on and fixed on the tray conveying line 3. The two UCP250 bearing seats are fixed on the tray conveying line 3 in the direction perpendicular to the movement direction of the tray conveying line 3. One end of the rotating shaft A26 is connected with the output end of the precision planetary reducer through the plum coupling A24. The two empty tray turnover arms 27 are fixed on the rotating shaft A26 through the two 25-turn 50 stainless steel expansion sleeves.

[0115] As Figure 7 , 8As shown in Figure 9, two tilting arms 27 are symmetrically arranged at both ends of the rotating shaft A26. The distance between the two tilting arms 27 is adapted to the width of the empty disk to maintain a stable balance during the tilting process. Each tilting arm 27 includes a tilting plate 272 and two vertically parallel symmetrical angle steel plates 271. The fixed ends of the two angle steel plates 271 are fixedly connected to the outer side of the tilting plate 272, forming a clamping opening between them. The tilting plate 272 is fitted and fixed to the shaft of the rotating shaft A26. The two tilting arms 27 and the four symmetrical angle steel plates 271 form a clamping opening with raised edges to improve the stability during the clamping and tilting of the empty disk and prevent it from falling. A bearing assembly A25 is fixedly connected to the mounting base 21. The rotating shaft A26 passes through the bearing assembly A25 and is rotatably connected to it. The rotating shaft A26 is fixed by rotating with a bearing guide, which can improve the service life of the rotating shaft A26. A vertical plate 29 is fixedly connected between the mounting base 21 and the bracket A22. A Hall sensor A28 is fixedly connected to the vertical plate 29. An oblong hole A291 is formed in the vertical plate 29, and the Hall sensor A28 is inserted and fixed in the oblong hole A291. A magnet matching the Hall sensor A28 is embedded in the flip plate 272. A permanent magnet is usually selected to detect the flip angle and status through the Hall sensor A28. After inputting the data into the device control system, automated operation is achieved. There are three Hall sensors A28: two at the bottom and one at the top. The two at the bottom correspond to the reference surface of the mounting base 21 and are arranged on both sides of the bracket A22 to respond to the start and stop positions of the flip arm. The one at the top responds to the zero position of the flip arm, quantitatively controlling the flip angle and status of the flip arm to improve the flip accuracy and the degree of automation control.

[0116] The motor of the tilting discharge device 4 is an 86 stepper motor, and the output end is matched with a precision planetary reducer; the coupling is a plum blossom coupling, and the bearing pair B422 includes a UCP205 bearing seat and a matching bearing; the center of the tilting plate 421 is a tightly fitted expansion sleeve, and the tilting plate 421 is tightly fitted to the main shaft 423 through the expansion sleeve; the output end of the 86 stepper motor is connected to the input end of the precision planetary reducer, the output end of the precision planetary reducer is connected to the main shaft 423 through the plum blossom coupling, and one end of the main shaft 423 is connected to the output end of the precision planetary reducer through the plum blossom coupling.

[0117] like Figure 10 , 11 As shown in Figures 12 and 13, the flipping plate 421 and the flipping arm 424 are two symmetrically arranged at both ends of the main shaft 423. The distance between the two flipping arms 424 is adapted to the width of the seedling tray 8 to maintain a stable balance during the flipping process of the seedling tray 8. A crossbeam 427 is fixedly connected between the two flipping arms 424 to improve its stability.

[0118] The turnover assembly 42 further comprises a cylinder 425 and an arm plate 426, the cylinder 425 is fixedly connected to the turnover arm 424, the telescopic end of the cylinder 425 is fixedly connected to the outer side of the arm plate 426 after penetrating through the turnover arm 424, the arm plate 426 is driven by the cylinder 425 to tightly hold the seedling tray 8, so as to adapt to seedling trays 8 of different widths and improve the versatility. Each arm plate 426 is matched with two cylinders 425 to provide balanced holding force. A vertical mounting plate 411 is fixedly connected to the rack 41 between the turnover plate 421 and the driving assembly 43, a Hall probe B 428 is fixedly connected to the mounting plate 411, a magnet matched with the Hall probe B 428 is embedded in the turnover plate 421, so as to detect the turnover angle and state through the Hall probe B 428, and input the device control system to realize automatic operation. The Hall probe B 428 is three, two at the bottom and one at the top, the two at the bottom correspond to the upper reference surface of the rack 41 and are arranged on the two sides of the coupling, and respond to the starting position and the stopping position of the turnover arm; the one at the top responds to the zero position of the turnover arm, quantitatively controls the turnover angle and state of the turnover arm, so as to improve the turnover precision and the degree of automatic control.

[0119] As shown in Figure 17 , the vertical column of the planting frame 7 is bored with an adjusting hole 101, and the layer bench 710 is detachably connected to the vertical column through the adjusting hole 101. The detachable connection is realized by screwing, and the adjusting hole 101 is a bolt hole and is equidistantly arranged on the vertical column; the layer plate of the layer bench 710 is fixed on the two vertical columns by bolts to form a single-layer planting layer; the height of the layer plate is controlled by adjusting the position of the fixed bolt.

[0120] As shown in Figure 14-22 , the telescopic cylinder is controlled to reciprocate by the control system, and drives the transmission push rod 733 to move up and down. The transmission push rod 733 is clamped in the swing crank 72 of each layer by a welded pipe at the position of each layer platform, and the swing crank 72 drives the spraying swing pipe 75 to swing the water conveying pipe 751 to make small amplitude swing movement. Through this structure design, the up and down linear motion is converted into the rotation motion of the water conveying pipe 751, and the rotation motion drives the spraying vertical plate 753 at the bottom of the water conveying pipe 751 to reciprocate, so as to realize complete spraying of the barley grass in the seedling tray 8. After spraying, the excess spraying water flows into the composite lower water beam 76 through the water outlet at the bottom of the seedling tray 8, as shown in Figure 17 , a rectangular drainage groove 784 with a depth of 5m is cut on the bottom beam of the seedling tray 8, and a drainage hole is arranged at the bottom of the beam to weld a drainage elbow to drain the excess water. The layer bench 710 platform and the drainage groove 784 have a slope of 1.5% to 3%, and the drainage groove 784 is arranged at the low position of each layer bench 710 platform, and the bottom 84 end of the drainage groove is connected to the water outlet pipe 783 to facilitate the collection of the remaining water and nutrient solution at the low position. The water return pipe 781 is connected to a filter, and the filtered water is returned to the water tank by a water pump for secondary use, so as to improve the utilization rate of waste water and reduce the planting cost.

[0121] The light supplement lamp 74 on the planting frame 7 is adjusted adaptively according to the light intensity required by the barley plants at different stages.

[0122] Finally, after the growth of the barley plants is completed, the CTU trolley 6 is automatically moved to the seedling tray 8 to perform the feeding and discharging operation and is transported to a designated area. The CTU trolley 6 is equipped with a visual acquisition device to monitor the growth data of the barley and to transmit the data to the control system control panel.

[0123] The water culture high-zinc barley planting method of the embodiment can simultaneously and uniformly supplement water to the barley in the entire layer frame 710 through the cooperation of the triangular plate-shaped spray vertical plate 753 and the swing assembly, the swing crank 72, the telescopic electric cylinder and the transmission push rod 733, thereby meeting the requirement for uniformity of the growth factors such as environment (light, water, etc.), space, etc. of the barley in the entire layer frame 710 during the planting process, so as to maintain the stability of the planting quality and the batch balance consistency of the barley products. The participation of human labor in the plant production process is reduced, and the full-automatic light supplement, water supplement, drainage, feeding and discharging, transportation and growth data detection, etc. operations in the entire growth process from the seed to the barley finished product are realized.

[0124] The water culture barley production method of the embodiment has the following steps:

[0125] Work flow: The CTU trolley 6 is responsible for transporting the seedling tray 8 and transferring the seedling tray 8 to the planting frame 7 and transporting the seedling tray 8 to the load plate 33 of the double-row chain conveying line 3. The load plate 33 is driven by the double-row chain conveying line 3 to enter the turnover discharging device 4. The turnover discharging device 4 works, the turnover arm rotates to the tray turnover position, clamps the seedling tray 8 and turns over the barley into the grass receiving vehicle. After completion, the empty tray is reset to the load plate 33 of the double-row chain conveying line 3. The load plate 33 of the double-row chain conveying line 3 continues to drive the empty tray to move directly to the position of the empty tray turnover machine 2. The empty tray turnover machine 2 turns over the empty tray and then the empty tray enters the cleaning machine 1 after being conveyed by the conveying line 3.

[0126] After the empty tray enters the cleaning machine 1, it is first high-pressure washed and then recycled washed. After reaching the end, it moves back to be high-pressure washed again and dried by the air knife. Then it enters the feeding position to be turned over by the empty tray turnover machine 2 to the load plate 33 of the double-row chain conveying line 3. The load plate 33 of the double-row chain conveying line 3 drives the clean empty tray to below the germination tank 9. The germination tank 9 performs the germination and discharging operation. A flat laying unit 91 is arranged below the germination tank 9. The seed is laid through the flat laying unit 91 into the seedling tray 8. The load plate 33 continues to drive the seed-laid seedling tray 8 to move to the end. The CTU trolley 6 grabs the seedling tray 8 to the CTU trolley 6. The CTU trolley 6 moves to the position where the seedling tray 8 needs to be placed on the planting frame 7 and performs the operation to place the seedling tray 8 on the planting position of the planting frame 7.

[0127] In the above steps, the four station sensing points of the sensor 32 correspond to the tray turning machine 2, the germination tank 9, the tray turning and discharging device 4, and the discharging side of the conveying line 3, respectively. After the control system receives the corresponding sensor 32 station sensing point signals, the start and stop of the conveying line 3 and the tray laying conveying belt 913 are controlled, respectively. The carrier plate 33 on the conveying line 3 carries the seedling tray 8 to the corresponding sensing points, respectively. When the sensing points of the tray turning machine 2, the tray turning and discharging device 4, and the discharging side of the conveying line 3 are reached, the control system controls the conveying line 3 to stop and start, respectively, before and after the tray turning machine 2, the tray turning and discharging device 4, and the CTU trolley 6 complete the work. When the sensing point of the germination tank 9 is reached, the control system controls the tray laying conveying belt 913 to start and stop, respectively, before and after the discharging of the germination tank 9 is completed.

[0128] The CTU trolley 6 transports the seedling tray 8 along the predetermined track under the action of the control system. The predetermined track is planned in advance in the control system. The clamping part of the CTU trolley 6 is used to grab the seedling tray 8 from the planting rack 7 or the conveying line 3 onto the CTU trolley 6 or deliver the seedling tray 8 on the CTU trolley 6 to the planting rack 7 or the conveying line 3.

[0129] The water culture high-zinc barley planting method of the embodiment can set multiple side-by-side planting racks 7 as needed. The multi-layer structure of each planting rack 7 realizes spatial modal low-area dense planting of barley. The conveying line 3, the cleaning machine 1, the tray turning machine 2, the germination tank 9, the CTU trolley 6, the planting rack 7, and the tray turning and discharging device 4 cooperate with each other and have high automation. The water culture high-zinc barley planting method can realize full-automatic planting and production of water culture barley, even without manual production, has high production efficiency, and reduces production and planting costs by more than 60% through calculation.

[0130] In the wet immersion-dry immersion treatment step in the germination tank 9 of the water culture high-zinc barley planting method of the embodiment,

[0131] In the wet immersion process, the effective chlorine content is made to reach 200-350 mg / L by putting chlorine-containing effervescent tablets into water, and the seeds are soaked for 4-6 h. In this way, the seeds are fully watered, and at the same time, surface disinfection is performed to kill or inhibit mold activity. Different depths are adapted to different soaking times, and the adaptation relationship is as follows: the effective chlorine content is 200 mg / L, and the soaking time is 6 h; the effective chlorine content is 300 mg / L, and the soaking time is 4.5 h; the effective chlorine content is 350 mg / L, and the soaking time is 4 h. Considering production efficiency and cost, the effective chlorine content of 300 mg / L and the soaking time of 4.5 h are preferred.

[0132] The water supplementing amount in the wet immersion process completely covers the seeds in the tank, and the water supplementing amount is positively correlated with the air pressure of the air blower of the aeration pipe 96. The water supplementing amount reaches the position of the overflow port of the overflow pipe 98 in the initial water supplementing process, and the water surface is continuously supplemented with water, and the chaff and other sundries on the water surface are discharged through the overflow port. The water supplementing in the wet immersion process is realized through the spray head 953 of the spray ring pipe 951 at the top of the germination tank, the metal hose nozzle is installed on the spray head 953, the water spraying direction of the metal hose nozzle is manually adjusted to form a unidirectional circular flow on the water surface, and the chaff and other sundries on the water surface flow in a unidirectional clockwise or counterclockwise direction, so that the chaff and other sundries are more easily discharged from the overflow port of the germination tank. Meanwhile, three metal hose nozzles are directly aimed at the tank wall to realize the automatic cleaning function of the tank wall of the germination tank 9 after the single-day germination and immersion of the germination tank 9 is completed.

[0133] The dry immersion process is that, after the immersion water in the wet immersion process is completely discharged, the top is sprayed every 1.0-1.5h for 30-60s by the spraying assembly, and the spraying is continued for 6-10h. Different spraying frequencies are adapted to different spraying time and duration, and the adaptation relationship is as follows:

[0134] 1.0h / time, spraying for 30s, and continuing for 6h; 1.25h / time, spraying for 45s, and continuing for 10h; 1.5h / time, spraying for 60s, and continuing for 9h; considering the production efficiency and cost, 1.25h / time, spraying for 45s, and continuing for 10h are preferred.

[0135] In order to detect and prove the relationship between the spraying concentration of ZnSO4·7H2O solution and the final mature barley grass weight and zinc content, in the dry immersion process, the spraying solution in different batches of germination tanks 9 is selected as follows: water, ZnSO4·7H2O solution with a concentration of 150mg / L, ZnSO4·7H2O solution with a concentration of 200mg / L, ZnSO4·7H2O solution with a concentration of 250mg / L, and ZnSO4·7H2O solution with a concentration of 300mg / L, all of which are sprayed every 1.25h for 45s by the spraying assembly, and the spraying is continued for 10h. After the immersion and germination in the germination tank 9 are completed, the materials are discharged, and then two plates are sampled and numbered respectively after being discharged to the seedling trays.

[0136] Table 1: Dry immersion with different concentrations of ZnSO4·7H2O solution

[0137] Number Treatment Number of plates 1 Control (CK), spraying with water only 2 2 Spray dry after wetting with 150 mg / L of ZnSO4.7H2O 2 3 Spray dry after wetting with 200 mg / L of ZnSO4.7H2O 2 4 Spray dry after wetting with 250 mg / L of ZnSO4.7H2O 2 5 Spray dry after wetting with 300 mg / L of ZnSO4.7H2O 2

[0138] Different from the conventional water culture of barley grass, the dry immersion process reduces the seed soaking time, is suitable for four-season production operation, and avoids the seed anaerobic respiration and fermentation reaction. When the water absorption rate of the barley grass is greater than or equal to 40%, the barley embryo starts to germinate;

[0139] During the dry soaking process, the aeration pipe 96 provides high-pressure aeration for the barley grass soaking and germination, increasing the contact area between the seeds and oxygen, and providing sufficient aeration and cooling.

[0140] During the wet soaking process, water is added to the germination tank 9 2-3 ​​times, and floating impurities are discharged through the overflow pipe to reduce the source of pollution;

[0141] During the dry soaking process, the air inside the tank is circulated through the exhaust pipe 97 to remove the heat and carbon dioxide generated by the seed's respiration.

[0142] In the supplemental lighting and watering steps of planting rack 7:

[0143] Supplemental lighting: using supplemental lighting lamps;

[0144] Hydration: Hydration is achieved through spraying.

[0145] The blue light supplemental light uses blue and white LEDs with a spectral ratio of R:B:G = 3:3:4 to provide blue light for barley grass cultivation in seedling trays. Compared to conventional supplemental lights, the increased blue light ratio promotes early plant morphology development, benefits root development, and helps hydroponically grown barley grass form a stable "root mat," ensuring a clear distinction between the seed layer and root layer, resulting in clean white roots and significantly increasing product qualification rate.

[0146] A red light supplemental light, consisting of red and white LEDs, with a spectral ratio of R:B:G = 4.5:1.5:4, is used to cultivate barley grass in seedling tray 8 under red light. Increasing the proportion of red light improves the photosynthetic efficiency of hydroponically grown barley grass.

[0147] Red light (R) (600-700nm) can promote photosynthesis, blue light (B) (400-500nm) can regulate plant morphogenesis, and green light (G) (500-600nm) can assist photosynthesis or regulate stomata.

[0148] Blue light cultivation lasts for 2 days, with 4-6 hours of supplemental light per day, and the duration is adjusted according to the growth. At the end of blue light cultivation, the coleoptiles or cotyledons of the hydroponic barley grass seeds have clearly emerged and are able to perform photosynthesis.

[0149] The red light cultivation lasts for 5 days, divided into two stages. Red light I cultivation lasts for 3 and 4 days, with 6-8 hours of supplemental light per day, and the duration is adjusted according to the growth. Red light II cultivation lasts for 5, 6 and 7 days, with 8-10 hours of supplemental light per day, and the duration is adjusted according to the growth. This light duration setting is based on the growth stage of hydroponic barley grass and to promote zinc absorption.

[0150] The water supplementing is performed by the spraying oscillating water pipe 75, the oscillating frequency is 5-8 times per minute, the oscillating frequency is adjusted according to the height of the wheat seedlings, and the oscillating frequency is inversely proportional to the height of the wheat seedlings, the oscillating spraying is comprehensive and uniform;

[0151] The spraying oscillating water pipe 75 preferably performs the fan oscillating water supplementing through the bottom spraying vertical plate 753, and the water supplementing also plays the role of intermittent light supplementing, assists the photosynthesis, adjusts the opening and closing of the stomata of the barley grass cells, and promotes the stable absorption rate and conversion rate of the zinc element in the solution.

[0152] The environment temperature of the planting frame 7 is set to 20-25 DEG C, can be adjusted according to the actual conditions, and ventilation is ensured.

[0153] Step nine, in the fresh grass sampling inspection, when the barley seedlings grow to 7 days, the barley seedlings are cut, the numbered seedling trays are taken down, weighed, and sent for inspection. The test results are as follows:

[0154] A, fresh grass weight detection:

[0155] Table 2. Weight record table (kg), tray weight 2.4 kg

[0156] Number 1 2 3 4 5 Plate 1 7.78 7.66 6.95 7.29 7.38 After subtracting the weight of the plate 5.38 5.26 4.55 4.89 4.98 Plate 2 7.69 7.69 7.15 7.37 7.37 After subtracting the weight of the plate 5.29 5.29 4.75 4.97 4.97 Average 7.735 7.675 7.05 7.33 7.375 After subtracting the weight of the plate 5.335 5.275 4.65 4.93 4.975

[0157] In table 2, the measured weight is the weight of the seedling tray, so the weight of the grass should be reduced by the weight of the grass tray (2.4 kg).

[0158] Combined with table 2 and Figure 26 It is shown that the addition of zinc during seed soaking has a certain influence on the weight of the barley grass, and the weight is reduced by 1.1%, 12.8%, 7.6%, and 6.7% under different concentrations. Among them, the 200mg / L zinc solution has a greater negative impact on the weight of the barley grass.

[0159] B, fresh grass zinc content detection:

[0160] The five samples selected for inspection include 0, 150mg / L, 200mg / L, 250mg / L, and 300ml / L. After the samples are sent for inspection, the results are as follows:

[0161] Table 3. Zinc content of barley grass

[0162]

[0163] Combined with table 3 and Figure 27As shown, the percentage of organic zinc is on the rise, and 300 mg / L may not be the highest point. Compared with the CK group and 150 mg / L, the organic zinc content and proportion of the other concentrations of 200 mg / L, 250 mg / L, and 300 mg / L of zinc solution soaking are greatly increased: the organic zinc content is increased by 6.69 mg / kg, 9.96 mg / kg, and 15.05 mg / kg, respectively, compared with the CK group; and the proportion of organic zinc is increased by 7.6%, 13.2%, and 17.9%, respectively, compared with the CK group. At present, the effect of 300 mg / L of zinc solution soaking is good, and an unexpected technical effect of increasing the organic zinc content by 17.9% is achieved.

[0164] According to Tables 1-3 and Figure 26 、 27 , combined with the weight reduction rate of barley grass and the increase rate of organic zinc at different concentrations, as well as the addition cost of ZnSO4·7H2O and the residual rate of wastewater, the addition depth of ZnSO4·7H2O is preferably 200 mg / L-300 mg / L, and more preferably 300 mg / L, which can ensure the growth of barley grass while achieving efficient accumulation of organic zinc.

[0165] The water culture high-zinc barley grass planting production line and planting method of the present embodiment have been verified by production, with a production cycle of every 7 days, a yield guarantee mechanism, and a yield interval of 2.48-3.92 tons / 7 days for a 15-meter planting rack and 2.87-4.92 tons / 7 days for an 18-meter planting rack. It can be effectively applied to areas with tight land resources and insufficient barley grass supply, as well as livestock enterprises and large-scale barley grass planting bases that focus on the research and production of high-zinc livestock products, without relying on a large amount of arable land, adapting to different regional and scale production needs, and improving the flexibility of technical application. Relying on the standardized production process of multi-layer planting rack water culture technology, a large amount of stable output of barley grass rich in organic zinc is achieved, solving the problems of low yield and unstable organic zinc content of barley grass caused by environmental (soil, climate) fluctuations in traditional planting modes, and ensuring the continuity and reliability of the supply of raw materials for downstream high-zinc livestock products. By precisely controlling the concentration and application method of high-zinc solution, and taking advantage of the biological conversion capacity of barley grass, inorganic zinc is efficiently converted into organic zinc, greatly improving the utilization rate of zinc elements (compared with traditional direct addition of inorganic zinc, avoiding the defects of low absorption efficiency and serious waste), while reducing the cost of manual intervention and the overall production investment. It provides high-quality and stable organic zinc barley grass raw materials for the production of high-zinc livestock products (such as high-zinc meat and high-zinc milk), helps the transformation of the livestock industry from traditional extensive breeding to a fine industrial chain with high added value and high quality, meets the needs of consumers for food safety and nutritional health, improves the market competitiveness of livestock products, and promotes the coordinated development of barley grass and livestock industries.

[0166] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by the above, without departing from the spirit of the present application, similar structural modes and embodiments are not created by creative design, and all should belong to the protection scope of the present application.

Claims

1. A method of growing hydroponically high-zinc barley grass, characterized by, The steps are: Seed soaking and germination: After the soaking tank is connected to the suction pipe and the material is fed into the inside of the soaking tank, the soaking water is used for wet-dry soaking treatment of the barley seeds, so that the barley seeds in the soaking tank reach the germination and white appearance state. The soaking water in the tank is discharged, the tank is suctioned to contain zinc solution for seed soaking, and then the soaked and germinated barley grass is discharged to the bottom of the soaking tank and is laid on the laying unit; Seedling raising: The seedling tray is sequentially transferred between the tray turnover machine, the soaking tank and the discharge side of the conveying line through the conveying line, and is temporarily stopped through the corresponding position sensor sensing points, respectively completing tray turnover, laying and CTU trolley receiving seedling tray, and then is transferred to the planting frame for light and water supplementing until the barley grass matures; Seedling raising: The seedling tray is sequentially transferred between the tray turnover machine, the soaking tank and the discharge side of the conveying line through the conveying line, and is temporarily stopped through the corresponding position sensor sensing points, respectively completing tray turnover, laying and CTU trolley receiving seedling tray, and then is transferred to the planting frame for light and water supplementing until the barley grass matures; 2. The hydroponic high-zinc barley grass cultivation method according to claim 1, characterized in that: The temperature of the wet-dry soaking in the soaking tank is maintained at 20-35℃, and the treatment steps are: In the wet soaking process, the effective chlorine content is 200-350mg / L, and the soaking time is 4-6h; In the dry soaking process, the wet soaking water is completely discharged, the top is sprayed through the spraying assembly every 1.0-1.5h for 30-60s, and the process lasts for 6-10h; The spraying solution is a ZnSO4·7H2O solution with a concentration of 200-300mg / L; In the dry soaking process, the aeration system performs high-pressure aeration on the barley seed soaking and germination through the aeration pipe and the aeration head.

3. The hydroponic high-zinc barley grass cultivation method according to claim 2, characterized in that: The soaking tank is provided with an exhaust pipe and an overflow pipe; In the wet soaking process, the water is supplemented 2-3 times, and the floating impurities are discharged through the overflow pipe; In the dry soaking process, the exhaust pipe is used to make the air in the tank flow to take away the heat and carbon dioxide generated by the seed respiration.

4. The hydroponic high-zinc barley grass cultivation method according to claim 2, characterized in that: In the light and water supplementing steps of the planting frame: Light supplementing: Light supplementing is performed through the light supplementing lamp, and the light supplementing lamp includes a blue light supplementing lamp and a red light supplementing lamp; Water supplementing: Water supplementing is performed through spraying.

5. The water-cultivated high-zinc barley grass planting method according to claim 4, characterized in that: The blue light supplementing lamp is a light supplementing lamp composed of blue and white lamp beads, and the light spectrum ratio is R:B:G=3:3:4, and the blue light is used for cultivating the barley grass in the seedling tray; The red light supplementing lamp is a light supplementing lamp composed of red and white lamp beads, and the light spectrum ratio is R:B:G=4.5:1.5:4, and the red light is used for cultivating the barley grass in the seedling tray.

6. The water-cultivated high-zinc barley grass planting method according to claim 5, characterized in that: The blue light cultivation lasts for 2 days, and the light supplementing time is 4-6h per day; The red light cultivation lasts for 5 days, and is divided into two stages. The red light I cultivation lasts for 3-4 days, and the light supplementing time is 6-8h per day. The red light II cultivation lasts for 5-7 days, and the light supplementing time is 8-10h per day.

7. The method of claim 6, wherein the method is a method of growing hydroponic high-zinc barley grass. The water supplementing is performed through the spraying oscillating water pipe, and the oscillating frequency is 5-8 times per minute.

8. The method of claim 7, wherein the hydroponic high-zinc barley grass is grown in a solution comprising: The environment temperature of the planting frame is maintained at 20-35℃. ​

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