Tobacco seedling transplanting method

Abstract

The invention belongs to the technical field of tobacco planting, and discloses a tobacco seedling transplanting method which comprises the steps of preparing tobacco seedlings cultured by adopting chain type paper bowls, ridging, transplanting the seedlings, covering soil, carrying out drip irrigation, covering films and the like, the furrows comprise growth furrows formed in the ridge culture top surface and planting furrows formed in the bottoms of the growth furrows, the furrow depth of the growth furrows is larger than the plant height of the tobacco seedlings, the chain type paper bowls are placed in the ridge furrow direction so that the seedling holes can fall into the planting furrows, and the tobacco seedlings can protrude out of the planting furrows and are located in the growth furrows. The steps of digging a pond and transplanting one by one are omitted, the transplanting efficiency is greatly improved, and the transplanting accuracy is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco planting, and in particular to a tobacco seedling transplanting method. Background Art

[0002] At present, my country's tobacco transplanting technology is still mainly based on manual transplanting, supplemented by small semi-automatic transplanting machinery, due to its late start and remote planting areas. Planters need to first use machinery to assist in digging ponds, and then manually transplant tobacco seedlings in each pond after forming pond structures at intervals on the ridge surface. The entire transplanting process is difficult to carry out continuous transplanting through large-scale machinery. Not only is the transplanting efficiency low, but manual transplanting is also inevitably prone to omissions and errors, affecting the subsequent tobacco leaf harvest. Summary of the invention

[0003] The object of the present invention is to provide a tobacco seedling transplanting method, which saves the steps of pond digging and transplanting one by one, greatly improves the transplanting efficiency and ensures the transplanting accuracy.

[0004] To achieve this object, the present invention adopts the following technical scheme: a tobacco seedling transplanting method, comprising the following steps:

[0005] 1) preparing tobacco seedlings to be cultured in chain paper pots, wherein the chain paper pots include a plurality of seedling holes that are sequentially connected and folded in rows, and each of the seedling holes has the tobacco seedlings cultured therein;

[0006] 2) Ridge forming;

[0007] 3) Transplanting seedlings: using a trenching machine to trench the ridges along the ridge direction, the trenches include a growth trench opened on the top surface of the ridge and a planting trench opened at the bottom of the growth trench, the depth of the growth trench is greater than the height of the tobacco seedlings, and chain paper pots are placed along the ridge direction to make the seedling holes fall into the planting trenches, and the tobacco seedlings protrude from the planting trenches and are located in the growth trenches;

[0008] 4) Covering the soil: turning over the soil on both sides of the planting trench to fill the planting trench and cover the top of the seedling hole, and compacting the soil on the top of the seedling hole;

[0009] 5) Drip irrigation: arranging a drip irrigation device and drip irrigation is performed on each of the seedling holes, and the drip irrigation water volume is increased in stages according to the development stage of the tobacco seedlings;

[0010] 5) Film covering: using a heat-insulating film to cover the surface of the ridge and the growth furrow.

[0011] Preferably, the width dimension of the planting groove is D1, and the width dimension of the seedling hole is D2, satisfying: D2≤D1≤D2+5cm; and / or, the height dimension of the planting groove is H1, and the width dimension of the seedling hole is H2, satisfying: H2≤H1≤H2+5cm.

[0012] Preferably, the longitudinal section of the planting trench is V-shaped.

[0013] Preferably, the depth of the planting trench is 3-5 cm, and the depth of the planting trench is positively correlated with the plant height of the tobacco seedlings.

[0014] Preferably, during the seedling transplanting operation, if the plant height of the tobacco seedling is less than or equal to 6 cm, a planting trench with a depth of 3 cm is opened.

[0015] Preferably, during the seedling transplanting operation, if the plant height of the tobacco seedling is greater than or equal to 13 cm, a planting trench with a depth of 5 cm is opened.

[0016] Preferably, the depth of the growth ditch is 10-25 cm, and the width of the growth ditch at the top of the ridge is 15-45 cm.

[0017] Preferably, the ridge bottom width is 50-60 cm, the ridge surface width is 35-45 cm, and the ridge height is 30-40 cm.

[0018] Preferably, there are multiple ridges arranged, and the multiple ridges are arranged at intervals, and the row distance between two adjacent ridges is 120 cm.

[0019] Preferably, in the drip irrigation operation, the tobacco seedlings are irrigated once every 6-8 days during the seedling stage, with a water volume of 2.5-3L per tree and a duration of 10-15 minutes; during the root extension stage, they are irrigated once every 4-6 days, with a water volume of 2-3L per tree and a duration of 10-15 minutes; during the clustering stage, they are irrigated once every 2-4 days, with a water volume of 3-3.5L per tree and a duration of 10-15 minutes.

[0020] The beneficial effects of the present invention are as follows: the seedling holes are dropped into the transplanting ditch so that the tobacco seedlings are located in the growing ditch. After the transplanting ditch is covered with soil and compacted, water and fertilizer can be retained to prevent rapid loss of water and fertilizer. The roots of the tobacco seedlings with the matrix can be embedded in the soil of the transplanting ditch. All the roots are in contact with the soil, which makes it easier to absorb nutrients and water, thereby improving the survival rate. After the ridge is covered with film, it can be kept warm, and an environment conducive to the upward growth of the tobacco seedlings is formed in the growth ditch, thereby improving the quality of the finished tobacco leaves. By setting the growth ditch and the planting ditch and using chain paper pots to cultivate tobacco seedlings, during transplanting, the entire paper pot can be gradually unfolded into a continuous strip, so that multiple seedling holes with tobacco seedlings can be transplanted into the growth ditch and the planting ditch that are continuously opened along the ridge direction, eliminating the steps of digging ponds and transplanting one by one. On the premise of ensuring the stable development of the tobacco seedlings, labor and time can be saved, costs can be reduced and efficiency can be increased, and transplanting efficiency can be greatly improved and transplanting accuracy can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a chain paper bowl according to an embodiment of the present invention;

[0022] Figure 2It is a structural schematic diagram of ridge cultivation according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the planting trench according to an embodiment of the present invention.

[0024] In the figure: 100, chain paper pot; 110, seedling hole; 111, connecting belt; 120, substrate; 200, tobacco seedlings; 300, ridge cultivation; 310, growth ditch; 320, planting ditch. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] A tobacco seedling transplanting method provided in an embodiment of the present application comprises the following steps:

[0030] 1) preparing tobacco seedlings 200 to be cultured in a chain paper pot 100, wherein the chain paper pot 100 comprises a plurality of seedling holes 110 which are sequentially connected and folded in a row, and each seedling hole 110 has a tobacco seedling 200 cultured therein;

[0031] Reference Figure 1 As shown, it can be understood that the chain paper pot 100 includes a plurality of seedling holes 110 with a regular hexagonal cross-section, the seedling holes 110 are connected from top to bottom and filled with a matrix 120, tobacco seedlings 200 are cultivated in the matrix 120 of each seedling hole 110, and two adjacent seedling holes 110 are connected by a connecting belt 111 of the same length as the side of the seedling hole 110. Before the chain paper pot 100 is transplanted, a certain number of seedling holes 110 are folded in rows to fold the chain paper pot 100 into a rectangular structure. When transplanting, the plurality of seedling holes 110 of the chain paper pot 100 can be pulled apart in sequence to unfold the chain paper pot 100 into a strip structure.

[0032] 2) Ridge forming;

[0033] Reference Figure 2 As shown (for ease of understanding, Figure 2 Including ridge cultivation 300 without furrows and ridge cultivation 300 with only growth furrows 310, the planting personnel can use a ridging machine to generate raised ridges 300 in the transplanting area. Using ridge cultivation 300 to plant tobacco seedlings 200 has the following advantages:

[0034] ① Drainage and waterlogging prevention: Ridge formation can effectively drain water from the field, especially in rainy areas or rainy seasons, to prevent tobacco plants from being damaged by waterlogging;

[0035] ②. Increase ground temperature: Ridge cultivation of 300 can increase the soil surface area, which is conducive to absorbing sunlight, raising ground temperature, and promoting the growth of tobacco plant roots and nutrient absorption;

[0036] ③. Improve soil aeration: Ridging makes the soil loose and enhances aeration, which is beneficial to root respiration and microbial activity, thereby improving soil fertility;

[0037] ④. Convenient for field management: After ridge formation, the row and plant spacing of tobacco plants are clearer, which is convenient for fertilization, weeding, spraying and other operations, and improves management efficiency;

[0038] ⑤. Reduce pests and diseases: Ridge cultivation 300 improves ventilation and light transmission conditions, reduces field humidity, and reduces the occurrence of pests and diseases;

[0039] ⑥ Promote root development: Ridge 300 provides a deeper soil layer, which is conducive to the downward growth of roots and enhances the plant's resistance to lodging;

[0040] ⑦. Improve the quality of tobacco leaves: By improving the growing environment, ridging helps produce better quality tobacco leaves and enhance their commercial value.

[0041] 3) Transplanting seedlings: A trenching machine is used to trench the ridge 300 along the direction of the ridge 300. The trenches include a growth trench 310 opened on the top surface of the ridge 300 and a planting trench 320 opened at the bottom of the growth trench 310. The depth of the growth trench 310 is greater than the height of the tobacco seedling 200. A chain paper pot 100 is placed along the ridge direction so that the seedling hole 110 falls into the planting trench 320, and the tobacco seedling 200 protrudes from the planting trench 320 and is located in the growth trench 310;

[0042] Reference Figure 3 As shown, after ridge formation, the planting personnel can use a trenching machine to open continuous growth trenches 310 and planting trenches 320 on the top surface of the ridge 300. The growth trenches 310 and planting trenches 320 can be opened at one time, or the growth trenches 310 can be opened first, and then the planting trenches 320 can be opened. It will not be repeated here. After the growth trenches 310 and the planting trenches 320 are opened, the planting personnel can manually drag and drop the chain paper pot 100, or use a planting machine to automatically pull the chain paper pot 100 so that the seedling hole 110 falls into the transplanting trench. The depth of the growth trench 310 is greater than the plant height of the tobacco seedling 200 (i.e., the overall height from the bottom of the root system to the maximum leaf length) to ensure that the tobacco seedling 200 does not protrude from the growth trench 310.

[0043] 4) Covering the soil: turning over the soil on both sides of the planting trench 320 to fill the planting trench 320 and cover the top of the seedling hole 110, and compacting the soil on the top of the seedling hole 110;

[0044] When a planting machine is used to automatically pull the chain paper pot 100 to continuously transplant the tobacco seedlings 200, a soil covering and compacting structure can be set on the rear side of the transplanter to achieve automatic soil covering and compaction. The compacted soil will form a conical structure with a small top and a large bottom at the top of the seedling hole 110 and around the tobacco seedling 200, thereby ensuring the planting stability of the seedling hole 110 and improving the transplanting efficiency.

[0045] 5) Drip irrigation: arrange a drip irrigation device and drip irrigation is performed on each seedling hole 110, and the drip irrigation water volume is increased in stages according to the development stage of the tobacco seedlings 200;

[0046] Specifically, the drip irrigation device includes a plurality of nozzles, which are arranged in the growth ditch 310 at intervals along the ridge 300 direction and arranged one-to-one with the tobacco seedlings 200, and the nozzles can drip water toward the roots of the corresponding tobacco seedlings 200. The use of the drip irrigation device can replace manual watering, which is more convenient, and the drip irrigation water output is uniform and accurate, which can effectively save water resources.

[0047] It should be noted that the drip irrigation device can perform drip irrigation in the groove structure before transplanting the tobacco seedlings 200, and can also perform drip irrigation on the compacted soil around the tobacco seedlings 200 after transplanting, which will not be described in detail here.

[0048] 5) Film covering: The surface of the ridge 300 and the growth groove 310 are covered with a heat-insulating film.

[0049] After covering, the soil temperature can be increased, the water can be prevented from evaporating quickly, and the growth of weeds can be inhibited. The covering film is required to cover the entire ridge 300, which will not be repeated here.

[0050] It can be understood that the seedling hole 110 is dropped into the transplanting ditch so that the tobacco seedling 200 is located in the growth ditch 310. After the transplanting ditch is covered with soil and compacted, water and fertilizer can be retained to prevent rapid loss of water and fertilizer. The roots of the tobacco seedlings 200 with the matrix 120 can be embedded in the soil of the transplanting ditch. All roots are in contact with the soil, which makes it easier to absorb nutrients and water, thereby improving the survival rate. After the ridge 300 is covered with a film, it can keep warm, forming an environment in the growth ditch 310 that is conducive to the upward growth of the tobacco seedlings 200, thereby improving the quality of the finished tobacco leaves.

[0051] By setting up growth furrows 310 and planting furrows 320 and adopting chain paper pots 100 to cultivate tobacco seedlings 200, a small trenching machine can be used for trenching, which saves labor and time, reduces costs and increases efficiency. During transplanting, the entire paper pot can be gradually unfolded into a continuous strip, so that multiple seedling holes 110 with tobacco seedlings 200 can be transplanted into the growth furrows 310 and planting furrows 320 continuously opened along the ridge 300 direction, eliminating the steps of digging ponds and transplanting one by one. While ensuring the stable development of the tobacco seedlings 200 and achieving the same effect as digging ponds, the transplanting efficiency is greatly improved and the transplanting accuracy is guaranteed.

[0052] Reference Figure 3 As shown, it can be understood that the width dimension of the planting groove 320 is D1, and the width dimension of the seedling hole 110 (because the connecting belt 111 connected to the ridge of the seedling hole 110 is parallel to the direction of the ridge 300 when the seedling hole 110 is transplanted, the width dimension of the seedling hole 110, that is, the spacing dimension between the two opposite sides of the seedling hole 110) is D2, which satisfies: D2≤D1≤D2+5cm; or, the height dimension of the planting groove 320 is H1, and the width dimension of the seedling hole 110 is H2, which satisfies: H2≤H1≤H2+5cm; or, the width dimension of the planting groove 320 is D1, and the width dimension of the seedling hole 110 is D2, which satisfies: D2≤D1≤D2+5cm; and the height dimension of the planting groove 320 is H1, and the width dimension of the seedling hole 110 is H2, which satisfies: H2≤H1≤H2+5cm.

[0053] The width dimension of the planting groove 320 is limited to be greater than or equal to the width dimension of the seedling hole 110 to ensure that the seedling hole 110 can fall into the planting groove 320. The width dimension of the planting groove 320 is limited to be less than or equal to the width dimension of the seedling hole 110 plus 5 cm to prevent the opening of the planting groove 320 from being too large. The seedling hole 110 will fall over after entering the planting groove 320, affecting the subsequent root development of the tobacco seedlings 200 or affecting the subsequent upward growth of the tobacco seedlings 200.

[0054] The depth dimension of the planting groove 320 is limited to be greater than or equal to the depth dimension of the seedling hole 110, so that the seedling hole 110 will not be higher than the planting groove 320 after entering the planting groove 320, which is convenient for subsequent soil covering and compaction, and ensures that the seedling hole 110 can be embedded in the soil. The depth dimension of the planting groove 320 is limited to be less than or equal to the depth dimension of the seedling hole 110 plus 5 cm, so as to avoid the planting groove 320 being too deep, and the tobacco leaves being buried in the planting groove 320 after the seedling hole 110 enters the planting groove 320, affecting the subsequent upward growth of the tobacco leaves.

[0055] The longitudinal section of the planting trench 320 is V-shaped.

[0056] The longitudinal section of the planting groove 320 is set to be V-shaped. On the one hand, the V-shaped planting groove 320 can facilitate the structural design of the furrow opener, and facilitate the furrow opener to be inserted into the soil to continuously open furrows, thereby accelerating the formation of the planting groove 320; on the other hand, for the tobacco seedlings 200 cultivated in the chain paper pots 100, the seedling holes 110 of the chain paper pots 100 will shrink to a certain extent and deform into a conical structure at the bottom after the seedlings are formed. The V-shaped planting groove 320 can adapt to the conical bottom of the seedling holes 110, increase the contact area between the seedling holes 110 and the soil in the planting groove 320, and facilitate the root growth of the tobacco seedlings 200.

[0057] In addition, in some embodiments, the longitudinal section of the growth groove 310 is also V-shaped, so as to further facilitate the design and processing of the groove opener and accelerate the formation of the growth groove 310 .

[0058] As shown in the table below, it can be understood that the depth of the growth groove 310 is 10-25 cm, and the width (opening width) of the growth groove 310 at the top of the ridge 300 is 15-45 cm.

[0059] Table 1: Growth groove data comparison table

[0060]

[0061] The depth of the growth groove 310 is limited to 10-25 cm (including the end points) to ensure that after the ridge cultivation 300 is covered with film, the tobacco seedlings 200 have enough distance to grow upward, and at the same time, the tobacco seedlings 200 have enough light, and the root growth of the tobacco seedlings 200 is convenient, thereby ensuring the quality of the finished tobacco leaves.

[0062] With reference to the table below, it can be understood that the depth of the planting trench 320 is 3-5 cm, and the depth of the planting trench 320 is positively correlated with the plant height of the tobacco seedling 200 .

[0063] Table 2: Planting ditch data comparison table

[0064]

[0065] The height of conventionally transplanted tobacco seedlings 200 is usually 7-10 cm (including end points). Planters can adjust the depth of the planting trench 320 according to the actual height of the tobacco seedlings 200. For example, when the height of the tobacco seedlings 200 is 7-8 cm, the depth of the planting trench 320 can be set to 3.5 cm, when the height of the tobacco seedlings 200 is 8-9 cm, the depth of the planting trench 320 can be set to 4 cm, and when the height of the tobacco seedlings 200 is 9-10 cm, the depth of the planting trench 320 can be set to 4.5 cm.

[0066] The depth of the planting trench 320 is limited to 3-5 cm (including the end points), so that after the planting trench 320 is covered with soil and compacted, the matrix 120 at the roots of the tobacco seedlings 200 can be completely embedded in the soil, increasing the nutrient contact surface. At the same time, the tobacco seedlings 200 are avoided from being buried when covering with soil, resulting in death of the seedlings.

[0067] Furthermore, during the seedling transplanting operation, if the height of the tobacco seedling 200 is less than or equal to 6 cm, a planting trench 320 with a depth of 3 cm is opened.

[0068] For some tobacco seedlings 200 with smaller plant height but good development, such tobacco seedlings 200 can be transplanted using a planting ditch 320 with the minimum depth within a reasonable range. When transplanting, care should be taken to avoid burying the tobacco seedlings 200 and appropriately reduce the depth of the growth ditch 310 to expand the applicable range of the transplanting ditch.

[0069] Furthermore, if the height of the tobacco seedlings 200 is greater than or equal to 13 cm, a planting trench 320 with a depth of 5 cm is opened.

[0070] For some tobacco seedlings 200 that are tall but well developed, such tobacco seedlings 200 can be transplanted using a planting ditch 320 of maximum depth within a reasonable range, and the depth of the growth ditch 310 can be appropriately increased during transplanting to further expand the applicable scope of the transplanting ditch.

[0071] Referring to the table below, it can be understood that for ridge cultivation 300, the ridge bottom width is 50-60cm, the ridge surface width is 35-45cm, and the ridge height is 30-40cm.

[0072] Table 3: Comparison table of ridge cultivation data

[0073]

[0074]

[0075] By reasonably setting the top surface width and height of the ridge 300, the structural stability of the ridge 300 can be effectively improved, and a suitable growth environment can be provided for the tobacco seedlings 200, thereby further improving the quality of the finished tobacco leaves.

[0076] Further, there are multiple ridges 300, and the multiple ridges 300 are arranged at intervals, and the row spacing between two adjacent ridges 300 is 120 cm. Optionally, in some embodiments, the longitudinal section of the ridge 300 is an isosceles trapezoid, and the furrow width at the middle position of two adjacent ridges 300 is 50 cm.

[0077] By reasonably setting the row spacing and furrow width between two adjacent ridges 300, the layout of multiple ridges 300 is optimized, which facilitates the overall management of the planting personnel, improves the independence of tobacco leaves in different ridges 300, and ensures the growth efficiency of tobacco seedlings 200.

[0078] Referring to the table below, it can be understood that in drip irrigation operations, tobacco seedlings 200 are irrigated once every 6-8 days during the seedling stage, with a water volume of 2.5-3L per tree and a duration of 10-15 minutes; irrigated once every 4-6 days during the root extension stage, with a water volume of 2-3L per tree and a duration of 10-15 minutes; irrigated once every 2-4 days during the clustering stage, with a water volume of 3-3.5L per tree and a duration of 10-15 minutes.

[0079] Table 4: Watering amount data comparison table

[0080]

[0081]

[0082] Adaptively water the tobacco seedlings 200 according to their growth cycle, and gradually increase the amount of water to meet the tobacco seedlings 200's water needs during their growth. At the same time, control the amount of water within 2-3.5L to ensure adequate water supply and avoid fertilizer loss or even waterlogging.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tobacco seedling transplanting method comprising the following steps: 1) preparing tobacco seedlings (200) to be cultured in a chain paper pot (100), wherein the chain paper pot (100) comprises a plurality of seedling holes (110) connected in sequence and folded in a row, and each of the seedling holes (110) has the tobacco seedling (200) cultured therein; 2) Ridge forming; 3) Transplanting seedlings: using a trenching machine to trench the ridge (300) along the direction of the ridge (300), the trenches include a growth trench (310) opened on the top surface of the ridge (300) and a planting trench (320) opened at the bottom of the growth trench (310), the depth of the growth trench (310) is greater than the plant height of the tobacco seedling (200), and chain paper pots (100) are placed along the direction of the ridge so that the seedling holes (110) fall into the planting trench (320), and the tobacco seedling (200) protrudes from the planting trench (320) and is located in the growth trench (310); 4) Covering with soil: turning over the soil on both sides of the planting trench (320) to fill the planting trench (320) and cover the top of the seedling hole (110), and compacting the soil on the top of the seedling hole (110); 5) Drip irrigation: arranging a drip irrigation device and performing drip irrigation on each of the seedling holes (110), and increasing the drip irrigation water volume in stages according to the development stage of the tobacco seedlings (200); 5) Film covering: using a heat-insulating film to cover the surface of the ridge cultivation (300) and the growth groove (310).

2. The tobacco seedling transplanting method according to claim 1, characterized in that: The width dimension of the planting groove (320) is D1, and the width dimension of the seedling hole (110) is D2, satisfying: D2≤D1≤D2+5cm; and / or, the height dimension of the planting groove (320) is H1, and the width dimension of the seedling hole (110) is H2, satisfying: H2≤H1≤H2+5cm.

3. The tobacco seedling transplanting method according to claim 2, characterized in that: The longitudinal section of the planting groove (320) is V-shaped.

4. The tobacco seedling transplanting method according to claim 2, characterized in that: The depth of the planting trench (320) is 3-5 cm, and the depth of the planting trench (320) is positively correlated with the plant height of the tobacco seedling (200).

5. The tobacco seedling transplanting method according to claim 4, characterized in that: During the seedling transplanting operation, if the height of the tobacco seedling (200) is less than or equal to 6 cm, a planting trench (320) with a depth of 3 cm is opened.

6. The tobacco seedling transplanting method according to claim 4, characterized in that: During the seedling transplanting operation, if the height of the tobacco seedling (200) is greater than or equal to 13 cm, a planting trench (320) with a depth of 5 cm is opened.

7. The tobacco seedling transplanting method according to claim 1, characterized in that: The depth of the growth groove (310) is 10-25 cm, and the width of the growth groove (310) at the top of the ridge (300) is 15-45 cm.

8. The tobacco seedling transplanting method according to any one of claims 1 to 7, characterized in that: The ridge cultivation (300) has a ridge bottom width of 50-60 cm, a ridge surface width of 35-45 cm, and a ridge height of 30-40 cm.

9. The tobacco seedling transplanting method according to claim 8, characterized in that: The ridge cultivation (300) is arranged in plurality, and the plurality of ridge cultivations (300) are arranged at intervals, and the row spacing between two adjacent ridge cultivations (300) is 120 cm.

10. The tobacco seedling transplanting method according to any one of claims 1 to 7, characterized in that: In the drip irrigation operation, the tobacco seedlings (200) are irrigated once every 6 to 8 days during the seedling stage, with a water volume of 2.5 to 3 L per plant, and the duration is 10 to 15 minutes; during the root extension stage, they are irrigated once every 4 to 6 days, with a water volume of 2 to 3 L per plant, and the duration is 10 to 15 minutes; during the clustering stage, they are irrigated once every 2 to 4 days, with a water volume of 3 to 3.5 L per plant, and the duration is 10 to 15 minutes.

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