CN217523356U - Three-dimensional device of growing seedlings of flue-cured tobacco - Google Patents

Abstract

The utility model discloses a three-dimensional device of growing seedlings of flue-cured tobacco, including educating seedling tray, base and educate seedling tray rack, educate seedling tray including the ring plate of growing seedlings and grow seedlings the hole, educate seedling tray and go up to set up the ring plate of growing seedlings, evenly set up the hole of growing seedlings on the ring plate of growing seedlings, seedling tray placing frame top sets up the ring plate brace table of growing seedlings, educate seedling tray and place on seedling tray rack, seedling tray rack middle part main delivery pipe, the ring plate below of growing seedlings sets up the water spray ring canal, the water spray ring canal is linked together through water supply branch pipe with main delivery pipe, water spray ring canal top equidistance sets up the shower nozzle, main delivery pipe bottom is connected with the water pump. The utility model discloses required moisture of tobacco seedling growth and nutrient are in order to provide to the mode of educating seedling tray bottom promptly tobacco seedling root intermittent type nature spraying, have avoided the direct contact of nutrient solution with the tobacco seedling blade, have improved the liquid manure utilization ratio greatly. Meanwhile, the seedling culturing holes in the seedling culturing plate can be arranged in a terrace shape, so that the adjacent rows of the seedling culturing holes are staggered in space, the space utilization rate is high, the tobacco seedling individuals can grow fully, and the uniformity of the tobacco seedlings is high.

Description

Three-dimensional device of growing seedlings of flue-cured tobacco

Technical Field

The utility model relates to a plant seed technical field that grows seedlings, concretely relates to three-dimensional device of growing seedlings of flue-cured tobacco.

Background

In recent years, flue-cured tobacco seedling raising in China is mainly carried out specialization, commercialization and intensification seedling raising by a flue-cured tobacco cooperative society or a seedling raising owner, and the seedling raising modes mainly adopt floating seedling raising, wet seedling raising and air root-integrated seedling raising. The seedling raising technologies play an important role in improving the seedling raising efficiency and the seedling raising quality, but with the deepening of popularization and application, some problems are gradually exposed, most of seedling raising plates used in floating seedling raising, wet seedling raising and air whole-root seedling raising are polystyrene foam plates or PC plastic floppy plates, the strength is low, the service life is short, and the environmental pollution is large after the seedling raising plates are discarded for 2-3 years; seedling holes in the seedling raising tray are all on the same plane, the space utilization rate is not high, the growth space of tobacco seedlings after seedling emergence is small, and high-foot seedlings are easy to form in the later stage of seedling raising; the tobacco seedlings compete with each other for growth space, the tobacco seedlings which emerge later are in disadvantage in competition, and strong seedlings are difficult to form finally; the reason is that the strong seedling rate is not high.

After the floating seedling raising and wet seedling raising (early stage) seedling raising plates are sowed, the seedling raising plates are always immersed in the nutrient solution, the seedling raising matrix is soaked in water for a long time, the nutrient solution surface is exposed in the air for a long time, and algae are easily bred on the surface of the matrix and in the nutrient solution to induce diseases; the seedling holes are mostly quadrangular pyramids, the volume of the seedling holes is 10-18 cm & lt 3 & gt, the root system growth is limited, the root system volume is small, the contact surface between the root system and soil is small during transplanting, and the seedling holes are not beneficial to early growth and quick growth.

A large amount of nutrient solution and water are required to be put into the floating seedling raising pond, so that the utilization rate of fertilizer water is low; the water content of the plug root system is high, the 'dry long root and wet long leaf' are high, the root hair is relatively slowly developed due to high humidity, air flows from top to bottom of the plug root system soaked in the seedling raising substrate in water are less, the oxygen concentration is insufficient, the differentiation of root system cells is influenced, the absorption function of the root system is weakened, the number of root hair, fibrous root and lateral root is less, the activity of the root system is poor, spiral root is easily formed, and the root systems basically do not grow after being transplanted, so that the seedling returning period is long.

The moist seedling culture (middle and later period) and the air root-regulating seedling culture are mainly characterized in that a substrate is kept moist by spraying water or nutrient solution above a seedling culture plate to provide nutrients for tobacco seedlings; however, if the concentration of the nutrient solution is not well controlled during spraying, the seedlings are easy to burn, and after the nutrient solution is sprayed, clear water is required to be sprayed to wash the nutrient solution on the surfaces of the seedlings into the matrix, so that the water attached to the blades is more, the air humidity is high, the risk of disease outbreak is increased, the labor cost is increased, and the labor and the time are wasted.

Disclosure of Invention

Problem to exist among the background art, the utility model provides a three-dimensional device of growing seedlings of flue-cured tobacco, required moisture of tobacco seedling growth and nutrient are in order to provide to the mode of growing seedlings portion intermittent type nature spraying of tobacco seedling root promptly, the direct contact of nutrient solution with the tobacco seedling blade has been avoided, need not spray the clear water after spraying the nutrient solution and wash, be difficult for burning the seedling, with traditional showy grow seedlings, moist grow seedlings, modes such as whole root of air is grown seedlings are compared, the air humidity of growing seedlings portion top has been reduced, the matrix surface is difficult for breeding the moss, the risk of disease outbreak has been alleviateed, the liquid manure utilization ratio has been improved greatly. Meanwhile, the seedling culturing holes in the seedling culturing plate can be arranged in a terrace shape, so that the space between adjacent rows of the seedling culturing holes is staggered, the space competition between adjacent tobacco seedlings in the middle and later periods of seedling culturing is reduced, the individual tobacco seedlings fully grow, and the uniformity of the tobacco seedlings is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme: three-dimensional device of growing seedlings of flue-cured tobacco is including educating seedling tray 1, base 2 and educate seedling tray rack 3, educate seedling tray 1 including the ring board 5 of growing seedlings and the hole 6 of growing seedlings, educate seedling tray 1 and go up from outer to interior concentric setting ring board 5 of growing seedlings, evenly set up the hole 6 of growing seedlings on the ring board 5 of growing seedlings, the hole 6 of growing seedlings is regular hexagonal prism type, 6 bottoms in the hole of growing seedlings set up the support net 22, install on base 2 bottom seedling tray rack 3, 3 tops of seedling tray rack correspond the number of the ring board 5 of growing seedlings and the seedling ring board brace table 4 that the position set up the echelonment, it places on seedling tray rack 3 to educate seedling tray 1, 3 middle parts of seedling tray rack set up vertical main delivery pipe 14, it sets up water spray ring pipe 17 to grow seedlings ring pipe 5 below, water spray ring pipe 17 is linked together through water supply pipe 26 with main delivery pipe 14, water spray ring pipe 17 top equidistance sets up shower nozzle 18, main 14 bottom is connected with water pump 15.

Preferably, 3 bottoms of seedling tray racks rotate and install on base 2, 3 bottom surfaces middle parts of seedling tray racks set up swivel vertical post 10, the inside cavity of swivel vertical post 10, the bottom extends to base 2 below, the inside below that extends to of swivel vertical post 10 is passed to main water supply pipe 14 bottom, the 14 bottom of main water supply pipe is passed through rotary joint 16 and is connected with 15 delivery ports of water pump, set up driven gear 11 on the swivel vertical post 10, swivel vertical post 10 one side sets up driving motor 13, set up driving gear 12 in the driving motor 13 pivot, driving gear 12 meshes with driven gear 11 mutually.

As preferred, set up circular shape slide rail 8 on the base 2, educate seedling tray rack 3 bottom and correspond the diameter symmetry of slide rail 8 and set up stabilizer blade 7, stabilizer blade 7 bottom sets up walking wheel 9, and walking wheel 9 installs in slide rail 8.

Preferably, the inner walls of the seedling ring plates 5 positioned at the outer sides are respectively provided with a lower snap ring 23 and an upper snap ring 24, and the bottoms of the outer walls of the seedling ring plates 5 positioned at the inner sides are provided with a limiting ring 25.

Preferably, the spray head 18 is a fan-shaped atomizing spray head.

Preferably, the bottom of the seedling tray placing frame 3 is also provided with a water receiving tray 20, and one side of the water receiving tray 20 is provided with a collecting opening 21.

Preferably, the top end of the main water supply pipe 14 passes through the middle parts of the seedling ring plate support platform 4 and the seedling tray 1 in sequence and extends to the upper part, and the top end of the main water supply pipe 14 is provided with a water spray nozzle 19.

Preferably, the outer contour of the seedling raising tray 1 is a regular hexagon.

The utility model has the advantages that:

1. the utility model discloses the required moisture of tobacco seedling growth and nutrient are in order to provide to the mode of growing seedlings portion intermittent type nature spraying promptly to seedling tray bottom, have avoided the direct contact of nutrient solution with the tobacco seedling blade, need not spray the clear water after spraying the nutrient solution and wash, are difficult for burning the seedling, with traditional showy grow seedlings, moist grow seedlings, the whole root of air is grown seedlings etc. and is compared, reduced the air humidity who grows seedlings tray top, the matrix surface is difficult for breeding the moss, the risk that has alleviateed the disease outbreak has improved the liquid manure utilization ratio greatly. Simultaneously, educate seedling hole on educating seedling tray and can be terraced field form installation and arrange, make the adjacent interline space dislocation of seedling hole, space utilization is high, reduces the space competition between the adjacent tobacco seedling of middle and later stages of growing seedlings, cooperates rotatable seedling tray rack to realize educating seedling tray rotatory simultaneously, ensures to educate seedling tray and goes up the downthehole tobacco seedling of each seedling and obtain unanimous illumination condition, makes the individual abundant growth of tobacco seedling, and the tobacco seedling regularity is high.

2. The utility model discloses make and educate seedling tray unsettled, let educate seedling tray bottom and expose in the air, when the root system extends to the hole bottom of growing seedlings, contact dry air, there is the inhibiting action to the root system growth through dry air, make the root system stop growing, sufficient oxygen is favorable to root system cell division simultaneously, promotes the growth of side root to make the tobacco seedling root system sturdy, root hair is in large quantity, and the side root is flourishing. And the design of the seedling growing Kong Zhitong ensures that the root systems of the tobacco seedlings cannot be intertwined with each other to form a spiral shape, the root systems have large volume, and the contact surface between the root systems and the soil is large during transplanting, so that the seedling returning period is shortened, and the early growth and the rapid growth are facilitated.

3. The utility model discloses educate seedling tray material and be black duroplasts and refined steel sand net, durable, it is not fragile, service life is longer, educates seedling hole for regular hexagon's straight hexagonal prism, and the rectangular pyramid that the hole volume of growing seedlings is the same basal area educates seedling hole and has increased more than 2 times, increases the root space, and the root system of being convenient for develops, is favorable to improving strong seedling rate.

Drawings

Fig. 1 is a schematic view of the fitting structure of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a sectional view of the seedling-raising tray of the present invention;

fig. 4 is a schematic view of the present invention after its arrangement in a terrace shape;

FIG. 5 is a schematic view of a spacing structure between the seedling ring plates of the present invention;

FIG. 6 is a schematic view of the base and the nursery site rack of the present invention;

FIG. 7 is a schematic view of the water supply line of the present invention;

FIG. 8 is a top view of FIG. 7;

in the figure, a seedling raising tray 1; a base 2; a seedling tray placing frame 3; a seedling ring plate support table 4; seedling ring plates 5; seedling growing holes 6; a leg 7; a slide rail 8; a traveling wheel 9; rotating the column 10; a driven gear 11; a drive gear 12; a drive motor 13; a main water supply pipe 14; a water pump 15; a rotary joint 16; a water spray ring pipe 17; a spray head 18; a sprinkler head 19; a water pan 20; a collection port 21; a supporting net 22; a lower snap ring 23; an upper snap ring 24; a stop collar 25; a water supply branch pipe 26.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

Please refer with fig. 1 to 8, the three-dimensional flue-cured tobacco seedling growing device comprises a seedling growing tray 1, a base 2 and a seedling growing tray placing frame 3, wherein the seedling growing tray 1 comprises a seedling growing ring plate 5 and seedling growing holes 6, the seedling growing ring plate 5 is concentrically arranged on the seedling growing tray 1 from outside to inside, the seedling growing holes 6 are uniformly arranged on the seedling growing ring plate 5, a supporting net 22 is arranged at the bottom of each seedling growing hole 6, the bottom of each seedling growing tray placing frame 3 is installed on the base 2, the number and the position of the seedling growing ring plate 5 corresponding to the top of the seedling growing tray placing frame 3 are provided with a ladder-shaped seedling growing ring plate supporting table 4, the seedling growing tray 1 is placed on the seedling growing tray placing frame 3, the middle of the seedling tray placing frame 3 is provided with a vertical main water supply pipe 14, a water spraying ring pipe 17 is arranged below the seedling growing ring plate 5, the water spraying ring pipe 17 is communicated with the main water supply pipe 14 through a water supply branch pipe 26, the spray nozzles 18 are equidistantly arranged at the tops of the water spraying ring pipes 17, and the main water supply pipe 14 is connected with a water pump 15. Wherein, the seedling ring plate 5 of educating seedling tray 1 can misplace each other in the vertical direction, and the structure that cooperation educates seedling tray rack 3 can be terraced fields form and arrange, promotes space and utilization ratio, reduces the space competition between the adjacent tobacco seedling of the middle and later stages of growing seedlings, makes the individual abundant growth of tobacco seedling, and the tobacco seedling regularity is high. Simultaneously, through setting up water spray ring pipe 17 and shower nozzle 18 in each seedling ring plate 5 bottom, can spray clear water or nutrient solution to 6 bottoms in the hole of growing seedlings, avoided the direct contact of nutrient solution with tobacco seedling blade, need not spray clear water after spraying the nutrient solution and wash, be difficult for burning seedlings. Meanwhile, the air humidity above the seedling raising plate is reduced, moss is not easy to breed on the surface of the matrix, the risk of disease outbreak is reduced, and the utilization rate of water and fertilizer is greatly improved. The spray head 18 is a fan-shaped atomizing spray head, the spraying range is wide, the atomizing effect is good, and the seedling raising efficiency is improved. In the embodiment, the outer contour of the seedling raising plate 1 is a regular hexagon, the seedling raising holes 6 are regular hexagonal cylindrical prisms, the volume of the seedling raising holes is increased by more than 2 times compared with that of rectangular pyramid seedling raising holes with the same bottom area, the root space is increased, root development is facilitated, and the seedling strengthening rate is improved. Moreover, the seedling raising plate 1 is made of black hard plastic, the supporting net 22 is made of fine steel sand net, and the seedling raising plate is durable, not easy to damage and long in service life. In addition, be located and set up down snap ring 23 and last snap ring 24 on the inner wall of the annular plate of growing seedlings 5 in the outside respectively, be located 5 outer wall bottoms of the annular plate of growing seedlings of inboard and set up spacing ring 25, can possess spacing effect each other after the dislocation between the annular plate of growing seedlings 5, ensure that the annular plate of growing seedlings 5 arrangement structure is stable for grow seedlings dish 1 can freely shrink for flat disc or stagger and arrange for the trapezoidal form, promote flexibility and the stability of use.

Further, 3 bottoms of seedling tray rack rotate and install on base 2, 3 bottom surface middle parts of seedling tray rack set up swivel stand 10, the inside cavity of swivel stand 10, the bottom extends to base 2 below, the 14 bottoms of main water supply pipe pass swivel stand 10 inside extend to the below, the 14 bottoms of main water supply pipe pass through rotary joint 16 and are connected with 15 delivery ports of water pump, set up driven gear 11 on the swivel stand 10, swivel stand 10 one side sets up driving motor 13, set up driving gear 12 in the driving motor 13 pivot, driving gear 12 meshes with driven gear 11 mutually. Wherein, seedling tray rack 3 can be rotatory for base 2 relatively, adopts driving motor 13 to provide rotatory drive power for seedling tray rack 3. Specifically, drive gear 12 is rotatory through driving motor 13 drive, and driving gear 12 drives rotatory stand 10 through driven gear 11 and rotates to realize seedling tray rack 3's rotary drive. Educate seedling tray 1 and be terraced field form arrange, promote under the prerequisite of space and utilization ratio, cooperate rotatable seedling tray rack 3 to realize educating seedling tray 1 rotatory, further ensure to educate seedling tray on each seedling hole 6 tobacco seedling obtain unanimous illumination condition, make the individual abundant growth of tobacco seedling, the tobacco seedling regularity is high. In this embodiment, the driving motor 13 is controlled to rotate the seedling raising tray 1 at a constant speed of 30 minutes/turn, and the rotation speed is not too high. And the number of the first and second electrodes,

set up circular shape slide rail 8 on the base 2, educate seedling tray rack 3 bottom and correspond the diameter symmetry of slide rail 8 and set up stabilizer blade 7, and stabilizer blade 7 bottom sets up walking wheel 9, and walking wheel 9 is installed in slide rail 8, and rotary friction is little, and guarantee revolution mechanic moves reliable and stable. Moreover, through the mode that rotatory stand 10 alternates main water supply pipe 14, main water supply pipe 14 passes through rotary joint 16 and is connected with water pump 15, can reach and also can spray the purpose at the rotatory in-process of educating seedling tray 1, promote the effect and the efficiency of the work of growing seedlings.

Further, 3 bottoms of seedling tray rack still are provided with water collector 20, and water collector 20 one side is provided with collects mouthful 21, and water collector 20 can collect the part that grows seedlings the in-process and drip nutrient solution and moisture down, then through collecting mouthful 21 recycle, further promotion liquid manure utilization ratio.

Furtherly, 14 tops of main water supply pipe pass seedling ring board brace table 4 in proper order and educate seedling tray 1 middle part and extend to the top, and 14 tops of main water supply pipe are provided with watering shower nozzle 19, when needs spray to tobacco seedling blade, open watering shower nozzle 19, supply clear water through water pump 15, realize spraying seedling tray 1 upside.

The utility model discloses adopt following step at the in-process of growing seedlings:

1) Selecting a field and preparing seedling. Selecting a plastic greenhouse as a seedling growing field, leveling the ground of the seedling growing greenhouse, sequentially arranging seedling growing devices according to the space occupied by each seedling growing plate, and reserving a passageway in the middle.

2) And (5) filling a seedling substrate and sowing. The seedling raising plate 1 is flatly placed on the ground and filled with seedling raising substrates, and the substrates are seedling raising substrates special for flue-cured tobacco. Firstly, adjusting the moisture of a matrix appropriately, then loading the matrix into the seedling holes 6, wherein the matrix is not overfilled when the matrix is loaded, the matrix does not cover the boundaries between the seedling holes 6, seeding after the matrix is loaded, 1-2 seeds are sowed in each hole, after the seeding is finished, a thin-layer matrix is scattered on the seedling plate 1 to cover the seeds, and then the seedling plate 1 is placed into a seedling preparation pool to ensure that the matrix fully absorbs water and is wet.

3) And (5) installing a seedling raising plate. The seedling raising plate 1 which absorbs water fully is taken out from the seedling raising preparation pool, the seedling raising plate is installed on the seedling raising plate support 3, the seedling raising ring plate 5 on the seedling raising plate 1 is arranged on the seedling raising plate support 3 in a terrace shape, after the seedling raising plate 1 is installed, the starting driving motor 13 is started in the daytime of a fine day, the seedling raising plate 1 rotates at a constant speed for 30 minutes/circle, the seedling raising plate is closed after the day and stops rotating, and the light of all parts of the seedling raising plate is uniform and consistent.

4) Managing water and fertilizer; spraying clear water to the bottom of the seedling raising tray through a spray head before seedling emergence; after seedlings emerge, nutrient solution is sprayed to the bottom of the seedling raising tray through a spray head, the nutrient solution is prepared by using a seedling raising fertilizer special for tobacco, and the amount of sprayed clear water or nutrient solution is preferably that the substrate is fully wetted and does not drip down. The nitrogen concentration of the nutrient solution from the seedling emergence to the grand cross stage is 50-100 mg/kg, the nitrogen concentration of the nutrient solution from the grand cross stage to the seedling formation is 100-200 mg/kg, and the nitrogen, phosphorus and potassium concentration ratios are respectively 1. The pH value of the used clear water and nutrient solution is in a weak acid range of 5.5-6.5, the amount of the clear water or nutrient solution sprayed each time is preferably that the substrate is fully wet but does not drip water, when the surface of the substrate of the seedling raising tray is slightly dry, a spray switch can be opened for spraying, the spraying frequency is 2-3 times per day, and the method is determined according to the weather conditions.

5) Managing temperature and illumination; before seedling emergence, the air temperature in the seedling raising shed is kept between 18 ℃ and 28 ℃, the germination rate of tobacco seeds is reduced when the air temperature is higher than 28 ℃, the seedling emergence time is prolonged when the air temperature is lower than 18 ℃, and the uniformity of the tobacco seeds is reduced. If the temperature in the seedling raising shed is higher than 28 ℃, ventilating and cooling in time, and if the temperature is lower than 18 ℃, heating and preserving heat in time; the sun-shading net is used in the seedling raising shed to reduce illumination and promote seedling emergence. After seedling emergence, the temperature in the seedling raising shed is kept between 18 and 35 ℃, if the temperature in the seedling raising shed is higher than 35 ℃, ventilation and cooling are carried out in time, and if the temperature is lower than 18 ℃, temperature is raised and kept in time; the sun-shading net is removed from the seedling raising shed to increase the illumination and promote the growth of tobacco seedlings.

6) Thinning seedlings; in the small cross period of the tobacco seedlings, on the premise of ensuring that each seedling hole has one tobacco seedling, pulling out the redundant tobacco seedlings in the seedling hole and planting the redundant tobacco seedlings in the seedling hole to the seedling hole with the missing tobacco seedlings.

7) Training seedlings; training seedlings through water and fertilizer regulation and film uncovering ventilation; spraying times of the nutrient solution are reduced 7-10 days before transplanting, so that the tobacco seedlings wither in the noon and can recover in the morning and in the evening; meanwhile, the door and the window of the seedling raising shed are opened day and night, and the side wall shed film of the seedling raising shed can be rolled up to practice the seedlings of the conditional seedling raising shed, so that the adaptability of the tobacco seedlings to the external environment is improved.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a three-dimensional device of growing seedlings of flue-cured tobacco which characterized in that: including educating seedling tray (1), base (2) and educate seedling tray rack (3), educate seedling tray (1) including the annular plate of growing seedlings (5) and the hole of growing seedlings (6), educate seedling tray (1) and go up from outer to interior concentric annular plate of growing seedlings (5), evenly set up on the annular plate of growing seedlings (5) and educate seedling hole (6), the hole of growing seedlings (6) are regular hexagonal prism type, the hole of growing seedlings (6) bottom sets up holds in the palm net (22), install on base (2) seedling tray rack (3) bottom, the number and the position that seedling tray rack (3) top corresponds the annular plate of growing seedlings (5) set up seedling tray supporting bench (4) of echelonment, it places on seedling tray rack (3) to educate seedling tray rack (1), seedling tray rack (3) middle part sets up vertical main delivery pipe (14), seedling tray (5) below sets up water spray ring pipe (17), water spray ring pipe (17) are linked together through water supply branch pipe (26) with main delivery pipe (14), water spray pipe (17) top sets up shower nozzle (18), main delivery pipe (14) equidistance shower nozzle (14) bottom, main delivery pipe (15) are connected.

2. The three-dimensional flue-cured tobacco seedling raising device according to claim 1, characterized in that: seedling tray rack (3) bottom is rotated and is installed on base (2), seedling tray rack (3) bottom surface middle part sets up swivel stand (10), swivel stand (10) inside cavity, the bottom extends to base (2) below, the inside below that extends to of swivel stand (10) is passed to main feed pipe (14) bottom, main feed pipe (14) bottom is passed rotary joint (16) and is connected with water pump (15) delivery port, set up driven gear (11) on swivel stand (10), swivel stand (10) one side sets up driving motor (13), set up driving gear (12) in driving motor (13) pivot, driving gear (12) and driven gear (11) mesh mutually.

3. The three-dimensional flue-cured tobacco seedling raising device according to claim 1, characterized in that: set up circular shape slide rail (8) on base (2), the diameter symmetry that educates seedling tray rack (3) bottom and correspond slide rail (8) sets up stabilizer blade (7), and stabilizer blade (7) bottom sets up walking wheel (9), and walking wheel (9) are installed in slide rail (8).

4. The three-dimensional flue-cured tobacco seedling raising device according to claim 1, characterized in that: the inner wall of the seedling ring plate (5) positioned at the outer side is respectively provided with a lower snap ring (23) and an upper snap ring (24), and the bottom of the outer wall of the seedling ring plate (5) positioned at the inner side is provided with a limiting ring (25).

5. The three-dimensional seedling raising device for flue-cured tobacco as claimed in claim 1, characterized in that: the spray head (18) is a fan-shaped atomizing spray head.

6. The three-dimensional flue-cured tobacco seedling raising device according to claim 1, characterized in that: the bottom of the seedling tray placing frame (3) is also provided with a water receiving tray (20), and one side of the water receiving tray (20) is provided with a collecting opening (21).

7. The three-dimensional seedling raising device for cured tobacco according to claim 1, characterized in that: the top end of the main water supply pipe (14) sequentially penetrates through the seedling ring plate supporting table (4) and the middle part of the seedling tray (1) to extend to the upper part, and a sprinkling nozzle (19) is arranged at the top end of the main water supply pipe (14).

8. The three-dimensional flue-cured tobacco seedling raising device according to claim 1, characterized in that: the outer contour of the seedling-raising plate (1) is in a regular hexagon shape.

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