Rice seedling raising and transplanting device and method for intermittent blanket-shaped rice seedlings

Abstract

The invention discloses a rice seedling raising and transplanting device and method for discontinuous-grid blanket-shaped rice seedlings. The rice seedling raising and transplanting device comprises a discontinuous-grid seedling raising tray and a longitudinal seedling feeding mechanism of a rice transplanter, the discontinuous grid seedling raising tray comprises a tray body and discontinuous grid transverse strips which are arranged on the tray body and protrude upwards. The tray body is used for raising seedlings to form discontinuous-grid blanket-shaped seedlings, discontinuous-grid grooves are formed in the positions, corresponding to the discontinuous-grid transverse strips, of the bottoms of the discontinuous-grid blanket-shaped seedlings, and the discontinuous-grid grooves are matched with the discontinuous-grid transverse strips; the longitudinal seedling feeding mechanism of the rice transplanter comprises a conveying belt, and positioning protruding strips are arranged on the conveying belt and matched with the discontinuous grid grooves. The seedling raising and transplanting device not only improves the seedling feeding precision of the intermittent blanket-shaped seedlings, but also can ensure the blanket forming quality of the low-seeding-rate intermittent blanket-shaped seedlings, so that the intermittent blanket-shaped seedlings are suitable for mechanized seedling raising and transplanting of hybrid rice.

Description

Technical Field

[0001] The invention relates to the technical field of mechanized rice seedling raising and transplanting, and in particular to a rice seedling raising and transplanting device and method for discontinuous grid blanket-shaped seedlings. Background Art

[0002] Mechanized rice seedling raising and transplanting is an important part of the mechanized rice production process. The hard disk for raising rice seedlings is an important carrier for mechanized rice seedling raising and transplanting, and its appearance is mainly a rectangular plastic hard disk. After the hard disk for raising rice seedlings is transported into the rice sowing production line, the bottom soil is laid, the furrows are compacted, the low-sowing amount is sown in rows, the topsoil is covered, the water is sprinkled, and the stacked disks are sent out, the rice seeds grow into seedlings in the hard disk for raising rice seedlings, and the roots of the seedlings are coiled into a blanket, and finally a blanket seedling that can be taken out as a whole is cultivated. The blanket seedlings are loaded into the seedling box of the transplanter for transplanting. The use of blanket seedling hard disks for raising rice seedlings improves the efficiency of mechanized rice production and reduces labor intensity. The blanket seedlings cultivated on the hard disks for raising rice seedlings have strong adaptability to machine transplanting.

[0003] At present, the existing blanket seedlings hard disk has a flat bottom surface, and the bottom of the root system of the cultivated blanket seedlings is also flat. The seedlings are mainly transported to the seedling gate by the friction between the rubber seedling conveying belt of the transplanter and the bottom of the seedlings and gravity. This seedling delivery method is easily affected by factors such as machine vibration and the quality of the seedling blanket. When the blanket seedlings slide or are squeezed and deformed during delivery, it is easy to cause inaccurate longitudinal delivery.

[0004] In order to solve the above problems, the utility model patent with the authorization announcement number CN211482122U discloses a strip-shaped pot body blanket seedling raising tray, the bottom surface of the tray body is provided with a plurality of strip-shaped intermittent grid grooves in the longitudinal direction, and the upper surface of the tray body is formed with strip-shaped pot body grooves arranged alternately with the strip-shaped intermittent grid grooves, so as to realize the forced delivery of blanket seedlings and improve the longitudinal seedling removal accuracy of conventional pot body blanket seedlings. However, since the strip-shaped intermittent grid grooves of the above blanket seedling raising tray are too densely distributed, when the above blanket seedling raising tray is used for hybrid rice low sowing amount raising, the seedlings are not blanket-like enough during low sowing amount raising because the bottom of the blanket seedlings is too densely separated, which leads to insufficient seedling blanket formation during low sowing amount raising, and is not suitable for mechanized hybrid rice raising and transplanting. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned problems and provide a rice seedling raising and transplanting device for intermittent grid blanket seedlings, which not only improves the seedling delivery accuracy of the intermittent grid blanket seedlings, but also ensures the blanket quality of low-seeding intermittent grid blanket seedlings, making the intermittent grid blanket seedlings suitable for mechanized hybrid rice seedling raising and transplanting.

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

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A rice intermittent grid blanket seedling raising and transplanting device comprises an intermittent grid seedling raising tray and a longitudinal seedling feeding mechanism of a rice transplanter; wherein:

[0009] The intermittent grid seedling raising tray comprises a tray body and an intermittent grid horizontal bar arranged on the tray body and protruding upward; the tray body is used for raising seedlings to form intermittent grid blanket-like seedlings, and an intermittent grid groove is formed at the bottom of the intermittent grid blanket-like seedlings at a position corresponding to the intermittent grid horizontal bar, and the intermittent grid groove matches the intermittent grid horizontal bar;

[0010] The longitudinal seedling conveying mechanism of the rice transplanter comprises a conveyor belt, and the conveyor belt is provided with positioning convex strips, and the positioning convex strips match the intermittent grid grooves.

[0011] The working principle of the above-mentioned rice intermittent grid blanket seedling raising and transplanting device is:

[0012] Seedlings are raised by using intermittent grid seedling raising trays. Since intermittent grid horizontal bars are provided on the tray body, intermittent grid blanket seedlings can be formed by raising seedlings by using the intermittent grid seedling raising trays. Intermittent grid grooves are formed at the bottom of the intermittent grid blanket seedlings at positions corresponding to the intermittent grid horizontal bars. When the intermittent grid blanket seedlings are transplanted, the intermittent grid blanket seedlings are placed on a conveyor belt, and the positioning convex bars on the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings to achieve positioning of the intermittent grid blanket seedlings, thereby improving the delivery accuracy of the intermittent grid blanket seedlings.

[0013] A preferred embodiment of the present invention is that two rows of intermittent grid horizontal bar groups are provided on the disk body, each row of intermittent grid horizontal bar groups includes a plurality of the intermittent grid horizontal bars, and the plurality of the intermittent grid horizontal bars are arranged along the length direction of the disk body; the two rows of intermittent grid horizontal bar groups are spaced apart from each other. In the above structure, the two rows of intermittent grid horizontal bar groups are spaced apart from each other, that is, the two rows of intermittent grid horizontal bar groups are staggered, not aligned, one intermittent grid horizontal bar of one row corresponds to the middle of two intermittent grid horizontal bars of the other row, and the two rows of intermittent grid horizontal bars are spaced apart and staggered from each other, so that the bottom of the intermittent grid blanket seedlings can also form intermittent grid grooves distributed at intervals; the spaced apart and staggered arrangement can improve the blanket-forming property, so that the intermittent grid blanket seedlings are suitable for mechanized hybrid rice seedling cultivation and transplanting; at the same time, the plurality of intermittent grid horizontal bars can form a plurality of intermittent grid grooves at the bottom of the intermittent grid blanket seedlings, which can cooperate with the positioning convex bars one by one when delivering the seedlings, further improving the positioning effect and improving the accuracy of delivering the seedlings.

[0014] Preferably, the longitudinal seedling delivery mechanism of the rice transplanter further includes a driving 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 constitute the positioning convex strips; the internal teeth mesh with the driving pulley. The intermittent grid seedling raising tray is used to cultivate strong intermittent grid blanket seedlings with intermittent grid grooves at the bottom; the external teeth of the double-sided synchronous toothed belt mesh with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings, and the internal teeth mesh with the driving pulley, so as to realize the forced seedling delivery and precise planting of the rice intermittent grid blanket seedlings.

[0015] Preferably, there are two conveyor belts, each of which is provided with a row of positioning convex strips, and the row of positioning convex strips corresponds to a row of intermittent grid horizontal strip groups. A tray of intermittent grid blanket seedlings is transported by two conveyor belts.

[0016] Preferably, the tray body includes a bottom plate, a short side facade arranged on the short side of the bottom plate, a long side facade arranged on the long side of the bottom plate, and a water seepage hole arranged on the bottom plate; the intermittent grid horizontal bars are arranged on the upper surface of the bottom plate; the upper ends of the short side facades and the long side facades are provided with flanges that first extend horizontally outward and then turn downward.

[0017] Furthermore, the outer side surfaces of the short side facade and the long side facade are provided with side reinforcing ribs, the upper ends of the side reinforcing ribs are connected to the flanges, and the lower surface of the bottom 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 raising and transplanting rice seedlings in intermittent grid blanket form comprises the following steps:

[0019] (1) Field preparation before planting;

[0020] (2) Raising seedlings in intermittent grid-shaped seedling trays;

[0021] (3) The conveyor belt of the longitudinal seedling transport mechanism of the rice transplanter fixes the seedlings and forces them to be transported;

[0022] (4) The rice transplanter is coupled with the seedling picking area for precise planting.

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

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

[0025] Preferably, in step (2), the specific steps of intermittent grid seedling raising trays forming a blanket for raising seedlings are:

[0026] By using intermittent grid seedling trays and under conditions of moderate sowing density, precision strip sowing technology is used to arrange seeds in orderly lines in the intermittent grid seedling trays, so that the number of strip sowing rows matches the number of times the rice transplanter takes seedlings horizontally, thus cultivating intermittent grid blanket seedlings.

[0027] Preferably, in step (3), the specific steps of the conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter to fix the seedlings and forcibly feed the seedlings are:

[0028] The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid blanket seedlings longitudinally, and the positioning convex strips of the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings. The longitudinal movement of the intermittent grid blanket seedlings is regulated by the conveyor belt to achieve fixed seedlings and forced seedling feeding.

[0029] Preferably, in step (4), the specific steps of coupling the transplanter's seedling picking area with precise planting are:

[0030] When the rice transplanter takes seedlings, the horizontal amount of seedlings taken is fixed and the vertical amount of seedlings taken is adjustable; the number of horizontal seedlings taken is consistent with the number of rows of seedlings raised in the intermittent grid blanket seedlings, ensuring that the center of the seedling claw of the rice transplanter overlaps with the center line of the seedling belt in the intermittent grid blanket seedlings; under different sowing densities, according to the agronomic requirements of mechanized rice planting, the seedling taking area is adjusted by adjusting the size of the vertical amount of seedlings taken, so as to achieve precise seedling taking and planting.

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

[0032] 1. In the rice raising and transplanting device and the rice raising and transplanting method of the present invention, the positioning convex strips on the conveyor belt of the longitudinal rice seedling feeding mechanism of the rice transplanter are engaged with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings grown by the intermittent grid rice seedling raising tray, and the positioning convex strips play a positioning role, ensuring that the movement of the intermittent grid blanket seedlings on the rice seedling box is highly consistent with the operation of the conveyor belt, achieving the effect of stabilizing the intermittent grid blanket seedlings and forcing accurate seedling delivery, thereby improving the delivery accuracy of the intermittent grid blanket seedlings.

[0033] 2. The rice seedling raising and transplanting device and rice seedling raising and transplanting method of the present invention have high blanket-forming properties by using the intermittent grid seedling raising trays to improve blanket quality, thereby ensuring that the blanket quality of the intermittent grid blanket seedlings of low-seeding rice meets the standards of mechanical transplanting, making the intermittent grid blanket seedlings suitable for mechanized hybrid rice rice seedling raising and transplanting. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the intermittent grid seedling raising tray in the present invention.

[0035] Figure 2 It is a cross-sectional view of the discontinuous grid seedling raising tray in the present invention.

[0036] Figure 3It is a schematic diagram of the three-dimensional structure of the discontinuous grid seedling raising tray in the present invention in another viewing direction.

[0037] Figure 4 It is a top view of the intermittent grid seedling raising tray in the present invention.

[0038] Figure 5 It is a schematic diagram of the three-dimensional structure of the conveyor belt in the present invention.

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

[0040] Figure 7 It is a top view of the conveyor belt in the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0042] Example 1

[0043] See also Figure 1-Figure 7 The present embodiment discloses a rice intermittent grid blanket seedling raising and transplanting device, comprising an intermittent grid seedling raising tray 1 and a longitudinal seedling conveying mechanism of a rice transplanter.

[0044] See also Figure 1-Figure 7 The intermittent grid seedling tray 1 includes a tray body and an intermittent grid horizontal bar 7 arranged on the tray body and protruding upward; the tray body is used for growing seedlings to form intermittent grid blanket seedlings, and an intermittent grid groove is formed at the bottom of the intermittent grid blanket seedlings at a position corresponding to the intermittent grid horizontal bar 7, and the intermittent grid groove and the intermittent grid horizontal bar 7 match each other.

[0045] See also Figure 1-Figure 7 The longitudinal seedling conveying mechanism of the rice transplanter includes a conveyor belt, on which a positioning convex strip 12 is provided. The positioning convex strip 12 matches the intermittent grid groove and is arranged corresponding to the intermittent grid horizontal strip 7.

[0046] See also Figure 1-Figure 7, the disk body is provided with two rows of intermittent grid horizontal bar groups 10, each row of intermittent grid horizontal bar groups 10 includes a plurality of the intermittent grid horizontal bars 7, and the plurality of the intermittent grid horizontal bars 7 are arranged along the length direction of the disk body; the two rows of intermittent grid horizontal bar groups 10 are arranged at intervals from each other. In the above structure, the two rows of intermittent grid horizontal bar groups 10 are arranged at intervals from each other, that is, the two rows of intermittent grid horizontal bar groups 10 are staggered, not aligned, one intermittent grid horizontal bar 7 of one row corresponds to the middle of two intermittent grid horizontal bars 7 of the other row, and the two rows of intermittent grid horizontal bars 7 are arranged at intervals from each other, so that the bottom of the intermittent grid blanket seedlings can also form intermittent grid grooves distributed at intervals; the mutually spaced and staggered arrangement can improve the blanket-forming property, so that the intermittent grid blanket seedlings are suitable for mechanized hybrid rice seedling cultivation and transplanting; at the same time, the plurality of intermittent grid horizontal bars 7 can form a plurality of intermittent grid grooves at the bottom of the intermittent grid blanket seedlings, which can cooperate with the positioning convex bars 12 one by one when sending the seedlings, further improving the positioning effect and improving the accuracy of sending the seedlings.

[0047] See also Figure 1-Figure 7 The tray body is a standard blanket seedling raising hard disk, the number of the intermittent grid horizontal bars 7 is eight, the number of the intermittent grid horizontal bars 7 in each row of the intermittent grid horizontal bar group 10 is four, the cross section of the intermittent grid horizontal bar 7 is an isosceles trapezoid, the central axis of the tray body is the symmetry line, and the two rows of intermittent grid horizontal bar groups 10 are staggered, equidistant and symmetrically distributed in the tray body. The intermittent grid seedling raising tray 1 can produce intermittent grid blanket seedlings with intermittent grid grooves at the bottom.

[0048] See also Figure 1-Figure 7 The discontinuous grid horizontal bar 7 is 70 mm long and has a cross-sectional shape of an isosceles trapezoid with a lower base of 4 mm, an upper base of 3 mm and a height of 7.5 mm.

[0049] See also Figure 1-Figure 7 The longitudinal seedling delivery mechanism of the rice transplanter also includes a driving 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 12; the external teeth constitute the positioning convex strips 12; the internal teeth 12 are meshed with the driving pulley. The intermittent grid seedling raising tray 1 is used to cultivate strong intermittent grid blanket seedlings with intermittent grid grooves at the bottom; the external teeth of the double-sided synchronous toothed belt are meshed with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings, and the internal teeth 12 are meshed with the driving pulley, so as to realize the forced seedling delivery and precise planting of the rice intermittent grid blanket seedlings.

[0050] See also Figure 1-Figure 7There are two conveyor belts, each of which is provided with a row of positioning ridges 12, which correspond to a row of intermittent grid horizontal bar groups 10, that is, the size of the positioning ridges 12 corresponds to the size of the intermittent grid horizontal bars 7, and the positional relationship between the positioning ridges 12 and the positional relationship between the intermittent grid horizontal bars 7 correspond to each other. A plate of intermittent grid blanket seedlings is conveyed by two conveyor belts, and the number of positioning ridges 12 on the conveyor belts is multiple, and the spacing between two adjacent positioning ridges 12 is the same as the spacing between two adjacent intermittent grid horizontal bars 7 in each row of intermittent grid horizontal bar groups 10, and the outer tooth spacing is 145mm.

[0051] See also Figure 1-Figure 7 In this embodiment, the number of positioning ridges 12 on each conveyor belt is 6, and the 6 positioning ridges 12 are evenly distributed along the conveyor belt.

[0052] See also Figure 1-Figure 7 The tray body includes a bottom plate 6, a short side elevation 3 arranged on the short side of the bottom plate 6, a long side elevation 2 arranged on the long side of the bottom plate 6, and a water seepage hole 8 arranged on the bottom plate 6; the intermittent grid horizontal bar 7 is arranged on the upper surface of the bottom plate 6; the upper ends of the short side elevation 3 and the long side elevation 2 are provided with a flange 4 that first extends horizontally outward and then turns downward. There are two short sides and two long sides respectively, so there are two short side elevations 3 and two long side elevations 2, and the number of the water seepage holes 8 is multiple, and the multiple water seepage holes 8 are evenly distributed on the bottom plate 6.

[0053] See also Figure 1-Figure 7 In each row of intermittent grid horizontal bar groups 10, the distance between the intermittent grid horizontal bar 7 closest to the short side facade 3 and the short side facade 3 is 58 mm, the distance between the intermittent grid horizontal bar 7 far from the short side facade 3 and the short side facade 3 is 87 mm, and the spacing between the intermittent grid horizontal bars 7 is 145 mm; the distance between one end of the intermittent grid horizontal bar 7 close to the long side facade 2 and the long side facade 2 is 35 mm.

[0054] See also Figure 1-Figure 7 The outer side surfaces of the short side facade 3 and the long side facade 2 are provided with side reinforcing ribs 5, and the upper ends of the side reinforcing ribs 5 are connected to the flange 4; the lower surface of the bottom plate 6 is provided with bottom reinforcing ribs 9. By providing reinforcing ribs, the overall structural stability of the intermittent grid seedling tray 1 is improved. The width of the flange 4 is 10 mm, and the side reinforcing ribs 5 are vertically connected to the flange 4. There are multiple side reinforcing ribs 5, among which the side reinforcing ribs 5 arranged on the long side facade 2 are spaced 95 mm apart, and the side reinforcing ribs 5 arranged 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 also Figure 1-Figure 7 The bottom reinforcement ribs 9 are distributed in a staggered manner in the transverse, longitudinal and oblique directions.

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

[0057] See also Figure 1-Figure 7 The working principle of the above rice intermittent grid blanket seedling raising and transplanting device is:

[0058] Seedlings are raised by means of an intermittent grid seedling raising tray 1. Since the tray body is provided with intermittent grid horizontal bars 7, intermittent grid blanket seedlings can be formed by raising seedlings by means of the intermittent grid seedling raising tray 1. Intermittent grid grooves are formed at the bottom of the intermittent grid blanket seedlings at positions corresponding to the intermittent grid horizontal bars 7. When transplanting the intermittent grid blanket seedlings, the intermittent grid blanket seedlings are placed on a conveyor belt, and the positioning convex strips 12 on the conveyor belt are meshed with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings to achieve positioning of the intermittent grid blanket seedlings, thereby improving the delivery accuracy of the intermittent grid blanket seedlings.

[0059] Example 2

[0060] See also Figure 1-Figure 7 This embodiment discloses a method for raising and transplanting rice seedlings in a blanket-like manner with discontinuous grids. The method is applied to the rice seedling raising and transplanting device described in Example 1, and comprises the following steps:

[0061] (1) Field preparation before planting:

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

[0063] (2) Intermittent grid seedling raising tray 1 blanket seedling raising:

[0064] By using the intermittent grid seedling tray 1 and under the condition of moderate sowing density, the precision strip sowing technology is used to achieve orderly arrangement of seeds in the intermittent grid seedling tray 1 in the shape of lines, so that the number of strip sowing rows matches the number of horizontal seedling removals by the rice transplanter, and intermittent grid blanket seedlings are cultivated.

[0065] (3) The conveyor belt of the longitudinal seedling delivery mechanism of the rice transplanter fixes the seedlings and forces them to be delivered:

[0066] The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid blanket seedlings longitudinally. The positioning convex strips 12 of the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings, and the inner teeth 12 engage with the driving pulley. The longitudinal movement of the intermittent grid blanket seedlings is regulated by the conveyor belt to achieve fixed seedlings and forced seedling feeding.

[0067] (4) Rice transplanter’s seedling picking area coupled with precise planting:

[0068] When the rice transplanter takes seedlings, the lateral amount of seedlings taken is fixed and the longitudinal amount of seedlings taken is adjustable; the fixed lateral amount of seedlings taken refers to the number of lateral seedling taking times of the rice transplanter's planting mechanism, which is consistent with the number of rows of seedlings raised in row sowing, ensuring that the center of the rice transplanter's seedling claw overlaps with the center line of the seedling belt in the intermittent grid blanket seedlings; the adjustable longitudinal amount of seedlings taken refers to the adjustment of the longitudinal amount of seedlings taken to adjust the seedling taking area under different sowing densities according to the agronomic requirements of mechanized rice planting, so as to achieve precise rice seedling taking for planting with low cost.

[0069] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A rice seedling raising and transplanting device with intermittent grid blanket-shaped seedlings, characterized in that: It includes an intermittent grid seedling raising tray and a longitudinal seedling feeding mechanism of a rice transplanter; wherein, The intermittent grid seedling raising tray comprises a tray body and an intermittent grid horizontal bar arranged on the tray body and protruding upward; the tray body is used for raising seedlings to form intermittent grid blanket-like seedlings, and an intermittent grid groove is formed at the bottom of the intermittent grid blanket-like seedlings at a position corresponding to the intermittent grid horizontal bar, and the intermittent grid groove matches the intermittent grid horizontal bar; The longitudinal seedling conveying mechanism of the rice transplanter comprises a conveyor belt, on which a positioning convex strip is arranged, and the positioning convex strip matches with the intermittent grid groove.

2. The rice seedling raising and transplanting device according to claim 1, characterized in that: The disk body is provided with two rows of intermittent grid horizontal bar groups, each row of intermittent grid horizontal bar groups includes a plurality of the intermittent grid horizontal bars, and the plurality of the intermittent grid horizontal bars are arranged along the length direction of the disk body; the two rows of intermittent grid horizontal bar groups are arranged at intervals from each other.

3. The rice seedling raising and transplanting device according to claim 2, characterized in that: The longitudinal seedling transport mechanism of the rice transplanter also includes a driving 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 constitute the positioning convex strips; the internal teeth are meshed with the driving pulley.

4. The rice seedling raising and transplanting device according to claim 3, characterized in that: There are two conveyor belts, each of which is provided with a row of positioning convex strips, and the row of positioning convex strips corresponds to a row of discontinuous grid horizontal strip groups.

5. The rice raising and transplanting device according to claim 1, characterized in that: The tray body includes a bottom plate, a short side facade arranged on the short side of the bottom plate, a long side facade arranged on the long side of the bottom plate, and a water seepage hole arranged on the bottom plate; the intermittent grid horizontal bars are arranged on the upper surface of the bottom plate; the upper ends of the short side facades and the long side facades are provided with flanges that first extend horizontally outward and then turn downward.

6. A method for raising and transplanting rice seedlings in intermittent grid blanket form, characterized in that: The rice seedling raising and transplanting method is applied to the rice seedling raising and transplanting device according to any one of claims 1 to 5, comprising the following steps: (1) Field preparation before planting; (2) Raising seedlings in intermittent grid-shaped seedling trays; (3) The conveyor belt of the longitudinal seedling transport mechanism of the rice transplanter fixes the seedlings and forces them to be transported; (4) The rice transplanter is coupled with the seedling picking area for precise planting.

7. The method for raising and transplanting rice seedlings according to claim 6, characterized in that: In step (1), the specific steps of field preparation before planting are: After mechanical tillage, laser leveling technology is used to level the paddy fields to ensure that the paddy fields are flat and free of stubble, with a height difference of no more than 3cm, the mud is settled to the point where the mud and water are clearly separated, the mud depth reaches 5-8cm, and the water depth is 1-3cm.

8. The method for raising and transplanting rice seedlings according to claim 7, characterized in that: In step (2), the specific steps of intermittent grid seedling raising trays into blanket seedling raising are: By using intermittent grid seedling trays and under conditions of moderate sowing density, precision strip sowing technology is used to arrange seeds in orderly lines in the intermittent grid seedling trays, so that the number of strip sowing rows matches the number of times the rice transplanter takes seedlings horizontally, thus cultivating intermittent grid blanket seedlings.

9. The method for raising and transplanting rice seedlings according to claim 8, characterized in that: In step (3), the specific steps of the conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter to fix the seedlings and forcibly feed the seedlings are: The conveyor belt of the longitudinal seedling feeding mechanism of the rice transplanter feeds the intermittent grid blanket seedlings longitudinally, and the positioning convex strips of the conveyor belt engage with the intermittent grid grooves at the bottom of the intermittent grid blanket seedlings. The longitudinal movement of the intermittent grid blanket seedlings is regulated by the conveyor belt to achieve fixed seedlings and forced seedling feeding.

10. The rice seedling raising and transplanting method according to claim 9, characterized in that: In step (4), the specific steps of coupling the transplanter's seedling picking area with precise planting are as follows: When the rice transplanter takes seedlings, the horizontal amount of seedlings taken is fixed and the vertical amount of seedlings taken is adjustable; the number of horizontal seedlings taken is consistent with the number of rows of seedlings raised in the intermittent grid blanket seedlings, ensuring that the center of the seedling claw of the rice transplanter overlaps with the center line of the seedling belt in the intermittent grid blanket seedlings; under different sowing densities, according to the agronomic requirements of mechanized rice planting, the seedling taking area is adjusted by adjusting the size of the vertical amount of seedlings taken, so as to achieve precise seedling taking and planting.

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