A device and method for growing and transplanting rice seedlings in the form of intermittent blanket-shaped seedlings

Abstract

This invention discloses a rice seedling raising and transplanting device and method using intermittent grid-like seedlings. The seedling raising and transplanting device includes an intermittent grid seedling tray and a longitudinal seedling feeding mechanism for a rice transplanter. The intermittent grid seedling tray includes a tray body and intermittent grid horizontal strips that are arranged on the tray body and protrude upwards. The tray body is used to raise seedlings to form intermittent grid-like seedlings. Intermittent grid grooves are formed at the bottom of the intermittent grid-like seedlings at positions corresponding to the intermittent grid horizontal strips, and these grooves match the horizontal strips. The longitudinal seedling feeding mechanism for the rice transplanter includes a conveyor belt with positioning protrusions that match the intermittent grid grooves. This seedling raising and transplanting device not only improves the feeding accuracy of intermittent grid-like seedlings but also ensures the quality of the seedlings forming a mat at low seeding rates, making intermittent grid-like seedlings suitable for mechanized rice raising and transplanting.

Description

Technical Field

[0001] This invention relates to the field of mechanized rice seedling raising and transplanting technology, specifically to a rice seedling raising and transplanting device and method with intermittent grid-like seedlings. Background Technology

[0002] Mechanized rice seedling raising and transplanting is a crucial step in the mechanized rice production process. The seedling tray, primarily a rectangular plastic tray, is a vital carrier in this process. In the rice planting production line, the seedling tray undergoes a series of processes: conveying the seedlings in, laying the bottom soil, furrowing and compacting, low-rate row sowing, covering with topsoil, watering, and stacking before being transported out. Rice seeds grow into seedlings within the tray, their roots forming a mat-like structure that can be easily removed as a whole. This mat-like seedling is then loaded into the transplanter's seedling box for transplanting. The use of mat-like seedling trays improves the efficiency of mechanized rice production, reduces labor intensity, and the mat-like seedlings cultivated on these trays exhibit strong adaptability to machine transplanting.

[0003] Currently, existing mat-shaped seedling trays have flat bottoms, resulting in flat root systems for the cultivated seedlings. The seedlings are primarily transported towards the transplanter gate by the friction between the rubber conveyor belt and the bottom of the seedling, as well as gravity. This method is susceptible to machine vibration and the quality of the formed seedling mat. When the mat-shaped seedlings slip or deform during transport, it can lead to inaccurate longitudinal delivery.

[0004] To address the aforementioned issues, utility model patent CN211482122U discloses a strip-shaped pot-shaped blanket-like seedling tray. The bottom surface of the tray has several rows of longitudinally spaced, intermittently spaced grooves, and the top surface forms strip-shaped pot grooves that alternate with these grooves, enabling forced delivery of the blanket-like seedlings and improving the longitudinal seedling picking accuracy of conventional pot-shaped blanket-like seedlings. However, because the intermittently spaced grooves in the aforementioned blanket-like seedling tray are too densely distributed, when used for low-seeding-rate hybrid rice seedling raising, the densely spaced pot-shaped dividers at the bottom of the blanket-like seedlings result in insufficient blanket formation of seedlings, making it unsuitable for mechanized transplanting of hybrid rice. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide a rice seedling raising and transplanting device for intermittent grid-like seedlings. This device not only improves the seedling delivery accuracy of intermittent grid-like seedlings, but also ensures the quality of the mat formation of low-seedling intermittent grid-like seedlings, making intermittent grid-like seedlings suitable for mechanized rice raising and transplanting.

[0006] Another object of the present invention is to provide a method for raising and transplanting intermittent grid-like rice seedlings.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A rice seedling raising and transplanting device with intermittent grid-like seedbeds includes an intermittent grid seedling tray and a longitudinal seedling delivery mechanism for a rice transplanter; wherein...

[0009] The interrupted grid seedling tray includes a tray body and interrupted grid horizontal bars that are set on the tray body and protrude upwards; the tray body is used to raise seedlings to form interrupted grid blanket-shaped seedlings, and interrupted grid grooves are formed at the bottom of the interrupted grid blanket-shaped seedlings at positions corresponding to the interrupted grid horizontal bars, and the interrupted grid grooves match the interrupted grid horizontal bars.

[0010] The longitudinal seedling feeding mechanism of the rice transplanter includes a conveyor belt, on which positioning protrusions are provided, and the positioning protrusions match the intermittent grid grooves.

[0011] The working principle of the above-mentioned intermittent grid-like rice seedling transplanting device is as follows:

[0012] Seedlings are raised using intermittent grid seedling trays. Because the trays have intermittent grid horizontal strips, seedlings raised using intermittent grid seedling trays can form intermittent grid mat-shaped seedlings. At the bottom of the intermittent grid mat-shaped seedlings, intermittent grid grooves are formed at the positions corresponding to the intermittent grid horizontal strips. When transplanting intermittent grid mat-shaped seedlings, the seedlings are placed on a conveyor belt. The positioning protrusions on the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid mat-shaped seedlings to position them, thereby improving the accuracy of seedling delivery.

[0013] In a preferred embodiment of the present invention, the disc body is provided with two rows of discontinuous grid strips, each row of discontinuous grid strips comprising multiple discontinuous grid strips arranged along the length of the disc body; the two rows of discontinuous grid strips are spaced apart from each other. In the above structure, the two rows of discontinuous grid strips are spaced apart, that is, the two rows of discontinuous grid strips are staggered and not aligned, with one discontinuous grid strip in one row corresponding to the middle of two discontinuous grid strips in the other row. The two rows of discontinuous grid strips are spaced apart and staggered, so that the bottom of the discontinuous grid blanket-like seedling can also form discontinuous grid grooves with discontinuous distribution; the spaced apart and staggered arrangement can improve the blanket-like texture, making the discontinuous grid blanket-like seedling suitable for mechanized seedling raising and transplanting of hybrid rice; at the same time, multiple discontinuous grid strips can form multiple discontinuous grid grooves at the bottom of the discontinuous grid blanket-like seedling, which can cooperate with the positioning protrusions one by one during seedling delivery, further improving the positioning effect and seedling delivery accuracy.

[0014] Preferably, the longitudinal seedling feeding mechanism of the rice transplanter further includes a drive pulley; the conveyor belt is a double-sided synchronous toothed belt, the outer surface of the double-sided synchronous toothed belt is provided with external teeth, and the inner surface of the double-sided synchronous toothed belt is provided with internal teeth; the external teeth form the positioning protrusions; the internal teeth mesh with the drive pulley. Robust, intermittent grid-like seedlings with intermittent grid grooves at the bottom are cultivated through the intermittent grid seedling tray; the external teeth of the double-sided synchronous toothed belt mesh with the intermittent grid grooves at the bottom of the intermittent grid-like seedlings, and the internal teeth mesh with the drive pulley, thereby achieving forced feeding and precise transplanting of the intermittent grid-like rice seedlings.

[0015] Preferably, there are two conveyor belts, each with a row of positioning protrusions that correspond to a row of intermittent grid strips. A tray of intermittent grid-shaped seedlings is transported by the two conveyor belts.

[0016] Preferably, the plate body includes a base plate, a short side facade disposed on the short side of the base plate, a long side facade disposed on the long side of the base plate, and drainage holes disposed on the base plate; the intermittent grid horizontal strips are disposed on the upper surface of the base plate; the upper ends of the short side facade and the long side facade are provided with flanges that first turn horizontally outward and then turn downward.

[0017] Furthermore, the outer surfaces of the short and long sides of the facade are provided with side reinforcing ribs, the upper ends of which are connected to the flanges; the lower surface of the base plate is provided with bottom reinforcing ribs. By providing reinforcing ribs, the overall structural stability of the intermittent grid seedling tray is improved.

[0018] A method for cultivating and transplanting intermittent grid-like rice seedlings includes the following steps:

[0019] (1) Prepare the field before planting;

[0020] (2) Intermittent grid seedling raising trays are used to form blanket seedling raising;

[0021] (3) The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter is used to force seedling feeding;

[0022] (4) The rice transplanter selects seedlings from the area for precise planting.

[0023] Preferably, in step (1), the specific steps for field preparation before planting are as follows:

[0024] After mechanical tillage, laser leveling technology is used to level the paddy fields, ensuring that the paddy fields are flat and free of stubble, with a height difference of no more than 3cm, and that the mud is settled to achieve a clear separation of mud and water, with a mud depth of 5-8cm and a water depth of 1-3cm.

[0025] Preferably, in step (2), the specific steps for intermittent grid seedling trays to form a mat for seedling cultivation are as follows:

[0026] By using intermittent grid seedling trays and under appropriate sowing density conditions, precision row sowing technology is used to achieve an orderly linear arrangement of seeds within the intermittent grid seedling trays, matching the number of rows sown with the number of times the rice transplanter picks up seedlings laterally, thus cultivating intermittent grid mat-like seedlings.

[0027] Preferably, in step (3), the specific steps of the conveyor belt for forced seedling feeding of the longitudinal seedling feeding mechanism of the rice transplanter are as follows:

[0028] The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid-shaped seedlings longitudinally. The positioning protrusions of the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid-shaped seedlings. By controlling the longitudinal movement of the intermittent grid-shaped seedlings through the conveyor belt, the seedlings are forcibly fed to fix them.

[0029] Preferably, in step (4), the specific steps for precise planting by coupling the seedling area taken by the rice transplanter are as follows:

[0030] When the rice transplanter picks up seedlings, the horizontal seedling picking amount is fixed, while the vertical seedling picking amount is adjustable. The number of horizontal seedling pickings is consistent with the number of rows of seedlings in the intermittent grid-like seedlings, ensuring that the center of the transplanter's seedling claw overlaps with the center line of the seedling strip in the intermittent grid-like seedlings. Under different sowing densities, according to the agronomic requirements of mechanized rice planting, the seedling picking area is adjusted by adjusting the vertical seedling picking amount, thereby achieving precise seedling picking and transplanting.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. In the rice seedling raising and transplanting device and method of the present invention, the positioning protrusion on the conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter engages with the intermittent grid groove at the bottom of the intermittent grid blanket-shaped seedling raised in the intermittent grid seedling raising tray. The positioning protrusion plays a positioning role, ensuring that the movement of the intermittent grid blanket-shaped seedling on the seedling box is highly consistent with the operation of the conveyor belt, thereby achieving the effect of stabilizing the intermittent grid blanket-shaped seedling and forcibly and accurately feeding the seedling, and improving the feeding accuracy of the intermittent grid blanket-shaped seedling.

[0033] 2. The seedling raising and transplanting device and method in this invention produce intermittent grid mat-shaped seedlings with high mat formation rate through the intermittent grid seedling raising trays. This can improve the quality of mat formation and ensure that the mat formation quality of low-sowing-rate rice intermittent grid mat-shaped seedlings meets the standards for mechanical transplanting. This makes the intermittent grid mat-shaped seedlings suitable for mechanized seedling raising and transplanting of hybrid rice. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the intermittent grid seedling tray in this invention.

[0035] Figure 2 This is a cross-sectional view of the intermittent grid seedling tray in this invention.

[0036] Figure 3This is a three-dimensional structural diagram of the intermittent grid seedling tray in this invention from another perspective.

[0037] Figure 4 This is a top view of the intermittent grid seedling tray in this invention.

[0038] Figure 5 This is a three-dimensional structural diagram of the conveyor belt in this invention.

[0039] Figure 6 This is a front view of the conveyor belt in this invention.

[0040] Figure 7 This is a top view of the conveyor belt in this invention. Detailed Implementation

[0041] To enable those skilled in the art to fully understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0042] Example 1

[0043] See Figures 1-7 This embodiment discloses a rice seedling raising and transplanting device with intermittent grid mat-shaped seedlings, including an intermittent grid seedling raising tray 1 and a longitudinal seedling delivery mechanism for a rice transplanter.

[0044] See Figures 1-7 The interrupted grid seedling tray 1 includes a tray body and interrupted grid horizontal strips 7 that are disposed on the tray body and protrude upwards; the tray body is used to cultivate seedlings to form interrupted grid blanket-shaped seedlings, and interrupted grid grooves are formed at the bottom of the interrupted grid blanket-shaped seedlings at positions corresponding to the interrupted grid horizontal strips 7, and the interrupted grid grooves and interrupted grid horizontal strips 7 match each other.

[0045] See Figures 1-7 The longitudinal seedling feeding mechanism of the rice transplanter includes a conveyor belt, on which a positioning protrusion 12 is provided. The positioning protrusion 12 matches the intermittent grid groove and is correspondingly arranged with the intermittent grid horizontal bar 7.

[0046] See Figures 1-7The disc body has two rows of discontinuous grid strip groups 10, each row of discontinuous grid strip group 10 including multiple discontinuous grid strips 7, which are arranged along the length of the disc body; the two rows of discontinuous grid strip groups 10 are spaced apart from each other. In the above structure, the two rows of discontinuous grid strip groups 10 are spaced apart from each other, that is, the two rows of discontinuous grid strip groups 10 are staggered and not aligned, with one discontinuous grid strip 7 in one row corresponding to the middle of two discontinuous grid strips 7 in the other row. The two rows of discontinuous grid strips 7 are spaced apart and staggered, so that the bottom of the discontinuous grid blanket seedling can also form discontinuous grid grooves with discontinuous distribution; the spaced apart and staggered arrangement can improve the blanket formation, making the discontinuous grid blanket seedling suitable for mechanized seedling raising and transplanting of hybrid rice; at the same time, multiple discontinuous grid strips 7 can make multiple discontinuous grid grooves form at the bottom of the discontinuous grid blanket seedling, which can cooperate with the positioning protrusions 12 one by one during seedling delivery, further improving the positioning effect and seedling delivery accuracy.

[0047] See Figures 1-7 The tray is a standard blanket-shaped seedling raising disk. There are eight discontinuous grid strips 7, with four discontinuous grid strips 7 in each row of discontinuous grid strip groups 10. The cross-section of each discontinuous grid strip 7 is an isosceles trapezoid, symmetrically arranged with the central axis of the tray as the symmetrical line. Two rows of discontinuous grid strip groups 10 are staggered and symmetrically distributed in opposite directions within the tray. This discontinuous grid seedling raising tray 1 can produce discontinuous grid blanket-shaped seedlings with discontinuous grid grooves at the bottom.

[0048] See Figures 1-7 The discontinuous grid strip 7 is 70mm long and has an isosceles trapezoidal cross-section with a lower base of 4mm, an upper base of 3mm, and a height of 7.5mm.

[0049] See Figures 1-7 The longitudinal seedling feeding mechanism of the rice transplanter also includes a drive pulley; the conveyor belt is a double-sided synchronous toothed belt, the outer surface of which is provided with external teeth, and the inner surface of which is provided with internal teeth 12; the external teeth form the positioning protrusion 12; the internal teeth 12 mesh with the drive pulley. Robust, intermittent grid-like seedlings with intermittent grid grooves at the bottom are cultivated through the intermittent grid seedling tray 1; the external teeth of the double-sided synchronous toothed belt mesh with the intermittent grid grooves at the bottom of the intermittent grid-like seedlings, and the internal teeth 12 mesh with the drive pulley, thereby achieving forced feeding and precise transplanting of the intermittent grid-like rice seedlings.

[0050] See Figures 1-7The conveyor belts consist of two belts, each equipped with a row of positioning protrusions 12. These positioning protrusions 12 correspond to a row of intermittent grid strips 7, meaning the size of the positioning protrusions 12 corresponds to the size of the intermittent grid strips 7, and the positional relationship between the positioning protrusions 12 and the intermittent grid strips 7 also corresponds. A tray of intermittent grid-shaped seedlings is transported by these two conveyor belts. The number of positioning protrusions 12 on each conveyor belt is multiple, and the spacing between two adjacent positioning protrusions 12 is the same as the spacing between two adjacent intermittent grid strips 7 in each row of intermittent grid strips 10. The external tooth spacing is 145mm.

[0051] See Figures 1-7 In this embodiment, there are 6 positioning protrusions 12 on each conveyor belt, and the 6 positioning protrusions 12 are evenly distributed along the conveyor belt.

[0052] See Figures 1-7 The plate body includes a base plate 6, a short-side facade 3 disposed on the short side of the base plate 6, a long-side facade 2 disposed on the long side of the base plate 6, and drainage holes 8 disposed on the base plate 6; the intermittent grid horizontal strips 7 are disposed on the upper surface of the base plate 6; the upper ends of the short-side facade 3 and the long-side facade 2 are provided with flanges 4 that first turn horizontally outward and then turn downward. There are two flanges on each of the short and long sides, therefore, there are two short-side facades 3 and two long-side facades 2, and the number of drainage holes 8 is multiple, with multiple drainage holes 8 evenly distributed on the base plate 6.

[0053] See Figures 1-7 Each row of intermittent grid horizontal strips consists of 10 strips. The distance between the intermittent grid horizontal strip 7 closest to the short side facade 3 and the short side facade 3 is 58mm, and the distance between the intermittent grid horizontal strip 7 far from the short side facade 3 and the short side facade 3 is 87mm. The spacing between any two intermittent grid horizontal strips 7 is 145mm. The distance between the end of the intermittent grid horizontal strip 7 closest to the long side facade 2 and the long side facade 2 is 35mm.

[0054] See Figures 1-7 The short side facade 3 and the outer surface of the long side facade 2 are provided with side reinforcing ribs 5, the upper end of which is connected to the flange 4; the lower surface of the base plate 6 is provided with bottom reinforcing ribs 9. By setting reinforcing ribs, the overall structural stability of the intermittent grid seedling tray 1 is improved. The flange 4 is 10 mm wide, and the side reinforcing ribs 5 are perpendicularly connected to the flange 4. There are multiple side reinforcing ribs 5, of which the side reinforcing ribs 5 set on the long side facade 2 are spaced 95 mm apart, and the side reinforcing ribs 5 set on the short side facade 3 are spaced 121 mm apart. The side reinforcing ribs 5 are 25 mm long, 5 mm wide, and 3 mm thick.

[0055] See Figures 1-7 The bottom reinforcing ribs 9 are distributed alternately in the horizontal, vertical and diagonal directions.

[0056] See Figures 1-7 The intermittent grid seedling tray 1 is made of composite material.

[0057] See Figures 1-7 The working principle of the above-mentioned intermittent grid-like rice seedling raising and transplanting device is as follows:

[0058] Seedlings are raised in the intermittent grid seedling tray 1. Because the tray has intermittent grid horizontal strips 7, the seedlings raised in the intermittent grid seedling tray 1 can form intermittent grid blanket-shaped seedlings. At the bottom of the intermittent grid blanket-shaped seedlings, intermittent grid grooves are formed at the positions corresponding to the intermittent grid horizontal strips 7. When transplanting the intermittent grid blanket-shaped seedlings, the seedlings are placed on the conveyor belt. The positioning protrusions 12 on the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid blanket-shaped seedlings to position the seedlings, thereby improving the delivery accuracy of the intermittent grid blanket-shaped seedlings.

[0059] Example 2

[0060] See Figures 1-7 This embodiment discloses a method for raising and transplanting intermittent grid-like rice seedlings. The method is applied to the rice raising and transplanting device described in Embodiment 1 and includes the following steps:

[0061] (1) Field preparation before planting:

[0062] After mechanical tillage, laser leveling technology is used to level the paddy fields, ensuring that the paddy fields are flat and free of stubble, with a height difference of no more than 3cm, and that the mud is settled to achieve a clear separation of mud and water, with a mud depth of 5-8cm and a water depth of 1-3cm.

[0063] (2) Intermittent grid seedling trays for 1-layer blanket seedling raising:

[0064] Using the intermittent grid seedling tray 1, under appropriate sowing density conditions, precision row sowing technology is used to achieve an orderly linear arrangement of seeds within the intermittent grid seedling tray 1, so that the number of row sowing rows matches the number of times the rice transplanter picks up seedlings laterally, thus cultivating intermittent grid mat-like seedlings.

[0065] (3) The longitudinal seedling feeding mechanism of the rice transplanter uses a conveyor belt to force seedling feeding:

[0066] The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid blanket-shaped seedlings longitudinally. The positioning protrusion 12 of the conveyor belt engages with the intermittent grid groove at the bottom of the intermittent grid blanket-shaped seedlings, and the internal teeth 12 engage with the drive pulley. By controlling the longitudinal movement of the intermittent grid blanket-shaped seedlings through the conveyor belt, the seedlings are fixed and forced to be fed.

[0067] (4) Precise planting with seedling picking area coupling of rice transplanter:

[0068] When the rice transplanter picks up seedlings, the horizontal seedling picking amount is fixed, while the vertical seedling picking amount is adjustable. The fixed horizontal seedling picking amount refers to fixing the number of horizontal seedling pickings by the transplanter's dividing mechanism. The number of horizontal seedling pickings is consistent with the number of rows in the row-sowing seedling raising process, ensuring that the center of the transplanter's seedling claw overlaps with the center line of the seedling strip in the intermittent grid-like seedlings. The adjustable vertical seedling picking amount refers to adjusting the seedling picking area by adjusting the vertical seedling picking amount according to the agronomic requirements of mechanized rice planting under different sowing densities, thereby achieving precise seedling picking and transplanting with less cost.

[0069] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A rice seedling raising and transplanting device for intermittent grid-like seedlings, characterized in that, This includes intermittent grid seedling trays and the longitudinal seedling delivery mechanism of the rice transplanter; among which, The interrupted grid seedling tray includes a tray body and interrupted grid horizontal bars that are set on the tray body and protrude upwards; the tray body is used to raise seedlings to form interrupted grid blanket-shaped seedlings, and interrupted grid grooves are formed at the bottom of the interrupted grid blanket-shaped seedlings at positions corresponding to the interrupted grid horizontal bars, and the interrupted grid grooves match the interrupted grid horizontal bars. The longitudinal seedling feeding mechanism of the rice transplanter includes a conveyor belt, and the conveyor belt is provided with positioning protrusions that match the intermittent grid grooves. The disc body is provided with two rows of discontinuous grid strips, each row of discontinuous grid strips includes multiple discontinuous grid strips, and the multiple discontinuous grid strips are arranged along the length direction of the disc body; the two rows of discontinuous grid strips are spaced apart from each other; The longitudinal seedling feeding mechanism of the rice transplanter also includes a drive pulley; the conveyor belt is a double-sided synchronous toothed belt, the outer surface of the double-sided synchronous toothed belt is provided with external teeth, and the inner surface of the double-sided synchronous toothed belt is provided with internal teeth; the external teeth form the positioning protrusion; the internal teeth mesh with the drive pulley; The conveyor belts consist of two belts, each belt having a row of positioning protrusions that correspond to a row of intermittent grid strips.

2. The rice transplanting device according to claim 1, characterized in that, The plate includes a base plate, a short side facade on the short side of the base plate, a long side facade on the long side of the base plate, and drainage holes on the base plate; the intermittent grid strips are provided on the upper surface of the base plate; the upper ends of the short side facade and the long side facade are provided with flanges that first turn horizontally outward and then turn downward.

3. A method for cultivating and transplanting intermittent grid-like rice seedlings, characterized in that, The rice seedling raising and transplanting method, applied to the rice seedling raising and transplanting device as described in any one of claims 1-2, includes the following steps: (1) Field preparation before planting; (2) Intermittent grid seedling raising trays to form a blanket for seedling raising; (3) The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter is used to force seedling feeding; (4) The rice transplanter takes seedlings from the area of ​​the seedlings and then precisely plants them.

4. The rice seedling raising and transplanting method according to claim 3, characterized in that, In step (1), the specific steps for field preparation before planting are as follows: After mechanical tillage, laser leveling technology is used to level the paddy fields, ensuring that the paddy fields are flat and free of stubble, with a height difference of no more than 3cm, and that the mud is settled to achieve a clear separation of mud and water, with a mud depth of 5-8cm and a water depth of 1-3cm.

5. The rice seedling raising and transplanting method according to claim 4, characterized in that, In step (2), the specific steps for intermittent grid seedling trays to form a mat for seedling cultivation are as follows: By using intermittent grid seedling trays and under appropriate sowing density conditions, precision row sowing technology is used to achieve an orderly linear arrangement of seeds within the intermittent grid seedling trays, matching the number of rows sown with the number of times the rice transplanter picks up seedlings laterally, thus cultivating intermittent grid mat-like seedlings.

6. The method for raising and transplanting rice seedlings according to claim 5, characterized in that, In step (3), the specific steps of the longitudinal seedling feeding mechanism of the rice transplanter forcibly feeding the seedlings via the conveyor belt are as follows: The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid-shaped seedlings longitudinally. The positioning protrusions of the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid-shaped seedlings. By controlling the longitudinal movement of the intermittent grid-shaped seedlings through the conveyor belt, the seedlings are forcibly fed to fix them.

7. The rice seedling raising and transplanting method according to claim 6, characterized in that, In step (4), the specific steps for precise planting by coupling the seedling area taken by the rice transplanter are as follows: When the rice transplanter picks up seedlings, the horizontal seedling picking amount is fixed, while the vertical seedling picking amount is adjustable. The number of horizontal seedling pickings is consistent with the number of rows of seedlings in the intermittent grid-like seedlings, ensuring that the center of the transplanter's seedling claw overlaps with the center line of the seedling strip in the intermittent grid-like seedlings. Under different sowing densities, according to the agronomic requirements of mechanized rice planting, the seedling picking area is adjusted by adjusting the vertical seedling picking amount, thereby achieving precise seedling picking and transplanting.

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