A sugarcane healthy tissue culture seedling planter

Abstract

The present invention discloses a planting machine for healthy tissue-cultured sugarcane seedlings, which comprises a frame, a seed metering device, a rotary tillage device, a furrowing and soil banking device, a righting and compaction device and a ground wheel. The furrowing and soil banking device includes a furrowing plate, a planting groove, a soil returning plate and a soil dividing plate. The planting machine is provided with structures such as a seed metering device, a furrowing and soil banking device, and a righting and compaction device. When in use, the healthy tissue-cultured sugarcane seedlings are discharged by the seed metering device to the seed guiding pipe of the furrowing and soil banking device and vertically fall into the soil along the seed guiding pipe (roots downward and seedlings upward). The furrowing and soil banking device can be used for furrowing and planting the healthy tissue-cultured sugarcane seedlings and returning soil to level the base of the seedlings. The righting and compaction device is used for further covering soil and righting the healthy tissue-cultured sugarcane seedlings, and at the same time compacting the soil around the healthy tissue-cultured sugarcane seedlings. The planting machine can solve the problems that the dibbling device of the existing planting machine for healthy tissue-cultured sugarcane seedlings is prone to blockage and is not suitable for use in clay loam areas, and that the existing planting machine for healthy tissue-cultured sugarcane seedlings cannot plant deeply and is prone to lodging.

Description

Technical Field

[0001] The present invention belongs to the field of agricultural planting devices, and particularly relates to a planting machine for healthy tissue culture seedlings of sugarcane. Background Art

[0002] Healthy tissue culture seedlings of sugarcane refer to the root, stem, and leaf-complete sugarcane seedlings without quarantine diseases cultivated through axillary bud, shoot tip, and callus culture techniques. Healthy tissue culture seedlings of sugarcane have the advantages of fast growth rate, strong tillering ability, high stem formation rate, high yield, and less seed usage. They can accelerate the rapid propagation of improved sugarcane varieties, solve the problems such as the consumption of a large amount of raw sugarcane due to large seed usage, and at the same time make the seed supply not restricted by time and temperature. The use of healthy tissue culture seedlings of sugarcane is an important guarantee for improving the yield and quality of sugarcane, and can also extend the ratoon age of sugarcane.

[0003] Currently, the sugarcane planting machines in production are mainly for planting sugarcane seed stems and are not suitable for planting healthy tissue culture seedlings of sugarcane. The rotary tillage and planting integrated machine disclosed in the patent "A rotary tillage and planting integrated machine for healthy tissue culture seedlings and single-bud stems of sugarcane" (CN113099755A) includes a frame with ground wheels, a seed metering device, a dibbling device, and a rotary tillage device. The seed metering device includes a seed metering tray, a driving rotating shaft, and a seed metering hopper. The dibbling device includes a dibbling turntable and an openable and closable dibbling hopper. The seed metering device of this integrated machine relies on gravity to actively open the flip cover of the seed metering hopper without additional supporting power. The flip cover opens quickly and is not easily blocked, and can realize the uniform sowing of healthy tissue culture seedlings of sugarcane. The dibbling device uses a rotary table type dibbling, which can improve the survival rate of sugarcane. However, in Guangxi, as the main sugarcane production area, the planting soil is mainly clay loam. When using the dibbling device to plant healthy tissue culture seedlings of sugarcane, the soil often adheres and blocks the dibbling device, affecting the continuous operation of the planting machine. Especially after rain, when planting seedlings, the soil viscosity is greater, and the planting machine can only stop and go, and even miss sowing due to blockage, affecting the planting efficiency, planting quality, and service life of the planting machine. Moreover, the healthy tissue culture seedlings of sugarcane planted by the dibbling device are relatively shallow in depth (only 5 - 10 cm), which is not conducive to the later management of sugarcane. The sugarcane is prone to lodging, affecting the yield and the quality of the seed stem. Therefore, it is necessary to develop a new planting machine for healthy tissue culture seedlings of sugarcane that is suitable for the main sugarcane production areas (clay loam areas) and can plant deeply (≥20 cm). Summary of the Invention

[0004] The purpose of the present invention is to provide a planting machine for healthy tissue culture seedlings of sugarcane, so as to overcome the defects that the dibbling device of the existing planting machine for healthy tissue culture seedlings of sugarcane is prone to blockage, is not suitable for use in clay loam areas, and cannot plant deeply.

[0005] To achieve the above object, the present invention provides a machine frame, a seed metering device, a rotary tillage device, a furrowing and soil covering device, a straightening and compaction device and a ground wheel. The rotary tillage device is arranged in front of the furrowing and soil covering device, and the straightening and compaction device is arranged behind the furrowing and soil covering device. The seed metering device is arranged above the machine frame, and a seed metering opening is arranged on the machine frame.

[0006] The furrowing and soil covering device includes a furrowing plate, a planting groove, a soil returning plate and a soil dividing plate; the cross section of the planting groove is U-shaped or V-shaped, and the opening faces backward. The furrowing plate is arranged in front of the planting groove, and the cross section of the furrowing plate is V-shaped. The depth of the furrowing plate is deeper than that of the planting groove; a seed guiding pipe is arranged at the front part inside the planting groove, and a seed discharging opening is arranged at the rear end of the lower part of the seed guiding pipe; the soil returning plate is arranged behind the planting groove, the bottom of the soil returning plate is inclined, and the depth gradually becomes shallower from the planting groove backward; the soil dividing plate is arranged at the rear part outside the planting groove, the soil dividing plate is inclined outward at an angle with the planting groove, the soil dividing plate includes a soil dividing part and a leveling part, the bottom of the soil dividing part is inclined, and the depth gradually becomes shallower from the planting groove backward. The inclination angle of the bottom of the soil dividing part is greater than the inclination angle of the soil returning plate, and the bottom of the leveling part is horizontal.

[0007] The straightening and compaction device includes a left soil covering wheel, a right soil covering wheel, a connecting part and a connecting rod. One end of the connecting rod is connected to the rear part of the machine frame by bolts, and the other end is provided with the connecting part. The left soil covering wheel and the right soil covering wheel are respectively hinged at both ends of the connecting part. The left soil covering wheel and the right soil covering wheel are inclined inward from top to bottom respectively, and the distance between the front parts of the left soil covering wheel and the right soil covering wheel is greater than the distance between the rear parts of the left soil covering wheel and the right soil covering wheel.

[0008] During use, the healthy tissue culture seedlings of sugarcane are discharged by the seed metering device into the seed guiding pipe of the furrowing and soil covering device and vertically enter the soil along the conduit (with the roots facing down and the seedlings facing up). The rotary tillage device is used to crush the soil of the planting land. The furrowing and soil covering device can be used for furrowing and planting the healthy tissue culture seedlings of sugarcane and covering the soil to level the base of the seedlings. The straightening and compaction device is used to further cover the soil and straighten the healthy tissue culture seedlings of sugarcane, and at the same time compact the soil around the healthy tissue culture seedlings of sugarcane.

[0009] Preferably, the depth of the furrowing plate is 5-10 cm deeper than that of the planting groove. The furrowing plate being deeper than the planting groove is beneficial to form a layer of loose soil under the planting position of the healthy tissue culture seedlings of sugarcane, which is beneficial to the rooting and growth of the healthy tissue culture seedlings of sugarcane.

[0010] Preferably, the height difference between the front end and the rear end of the soil returning plate is 5-8 cm. Preferably, the height difference between the front end and the rear end of the soil returning plate is 7 cm. That is, the depth of the returned soil is about 7 cm, which can cover the cup holder of the healthy tissue culture seedlings of sugarcane.

[0011] Preferably, there are two sets of connecting parts and connecting rods of the straightening and compaction device. One set of connecting rods is inclined forward and hinged to the frame, and the other set of connecting rods is inclined backward and hinged to the frame. Springs are sleeved on the connecting rods. The setting of the two sets of connecting rods is more conducive to the positioning of the left soil covering wheel and the right soil covering wheel. At the same time, the depth of the soil covering wheel can be adjusted according to the ground conditions.

[0012] Preferably, a subsoiler is also provided in the middle in front of the rotary tillage device, and the depth of the subsoiler is deeper than that of the rotary tillage device.

[0013] Preferably, there are two sets of seeding devices, and two sets of furrowing and soil banking devices and straightening and compaction devices are also provided. That is, this planter can plant two rows of tissue culture seedlings at the same time. It can be planted in wide and narrow rows or in equal row spacing.

[0014] Preferably, a seedling placement rack and a seat are provided above the frame, and a liquid spraying device is also provided on the frame. Workers sit on the seat and put the sugarcane tissue culture seedlings on the placement rack into the seeding device. The liquid spraying device includes a water tank, a water pump and a liquid discharge pipe. The water tank can be used to hold water, or it can be used to hold liquid fertilizer or pesticides.

[0015] Preferably, the seeding device includes a seeding bracket, a rotating shaft, a rotating chain, a guide rail and a seeding hopper. The rotating shaft and the rotating chain are provided on the seeding bracket. The seeding hoppers are fixedly arranged at intervals on the outer side of the rotating chain. The top of the seeding hopper is open and a flip cover is provided at the bottom. One end of the flip cover is connected to the seeding hopper through a pin. A guide rail is provided below the seeding hopper. The guide rail is annular and parallel to the rotating chain. The guide rail is disconnected at the seeding port, and the seeding port is located directly below part of the seeding hoppers. During planting, the healthy sugarcane tissue culture seedlings are manually put into the seeding hoppers in the way of roots downward and seedlings upward. The seeding hoppers move with the rotation of the rotating chain and reach the seeding port. The flip cover automatically opens under the action of gravity, and the healthy sugarcane tissue culture seedlings are discharged.

[0016] Preferably, the rotating shaft of the seeding device is in transmission connection with the ground wheel, and the seeding device is driven by the ground wheel. That is, the number of seeds sown is synchronized with the ground wheel. The amount of seeds sown can also be changed by changing the transmission ratio.

[0017] Preferably, a funnel-shaped inoculation hopper is provided at the seeding port. The lower part of the inoculation hopper is connected to the seed guiding pipe, and the height of the seed guiding pipe is 18 - 25 cm. Preferably, the height of the seed guiding pipe is about 20 cm.

[0018] Compared with the existing technology, the present invention has the following beneficial effects:

[0019] 1. The planter of the present invention is provided with structures such as a seeding device, a row-opening and soil-raising device, and a straightening and compacting device. When in use, the healthy sugarcane tissue culture seedlings are discharged into the seed guide tube of the row-opening and soil-raising device through the seeding device, and vertically fall into the soil along the seed guide tube (roots downward and seedlings upward). The row-opening and soil-raising device can be used for row-opening and planting of healthy sugarcane tissue culture seedlings and burying the base of the seedlings with soil. The straightening and compacting device is used to further cover the soil and straighten the healthy sugarcane tissue culture seedlings, and at the same time compact the soil around the healthy sugarcane tissue culture seedlings. Compared with the existing spot-seeding device planting, the row-opening and soil-raising device is not easy to adhere to the soil and is not easy to be blocked. It has high mechanical reliability, which is conducive to improving the planting efficiency and quality of the sugarcane planter, and the planting depth of the healthy sugarcane tissue culture seedlings is deeper, which is conducive to later management and lodging resistance.

[0020] 2. The row-opening and soil-building device of the present invention comprises an opening plate, a planting trough, a backfilling plate and a soil-dividing plate, wherein the opening plate is 5-10 cm deeper than the bottom of the planting trough, and can form a layer of loose soil below the planting location of the healthy sugarcane tissue culture seedlings, which is beneficial to the root growth of the healthy sugarcane tissue culture seedlings. The height difference between the front and rear ends of the backfilling plate is 5-8 cm, that is, the natural backfilling depth is 5-8 cm, which can achieve shallow soil covering of the healthy sugarcane tissue culture seedlings, which is beneficial to the growth and tillering of the healthy sugarcane tissue culture seedlings. Compared with the traditional spot seeding device, the row-opening and soil-building device can achieve deep planting (≥20 cm) of healthy sugarcane tissue culture seedlings, which is beneficial to improving the lodging resistance of sugarcane, and thus improving the yield and seed stem quality of sugarcane.

[0021] 3. The straightening and compacting device of the present invention comprises a left soil covering wheel, a right soil covering wheel, a connecting part and a connecting rod. The left soil covering wheel and the right soil covering wheel are arranged outwardly from bottom to top, and the distance between the front parts of the left soil covering wheel and the right soil covering wheel is greater than the distance between the rear parts of the left soil covering wheel and the right soil covering wheel, which can realize the straightening and soil covering and compacting of the healthy tissue culture seedlings of sugarcane, so that the roots of the healthy tissue culture seedlings of sugarcane are in close contact with the soil, which is conducive to growth. Among them, the connecting part and the connecting rod of the straightening and compacting device can be set in two groups, and are equipped with springs, which are conducive to the positioning of the left soil covering wheel and the right soil covering wheel. At the same time, the depth of the soil covering wheel can be adjusted according to the ground conditions.

[0022] 4. The seeding device of the present invention comprises a seeding bracket, a rotating shaft, a rotating chain, a seeding bucket and a guide rail, wherein the rotating shaft is transmission-connected to a ground wheel and driven by the ground wheel to synchronize the number of seeds of healthy tissue cultured sugarcane seedlings with the ground wheel. At the same time, the seeding amount can also be changed by changing the transmission ratio.

[0023] 5. The planter of the present invention can be used in clay loam areas, sloping lands or sandy loam areas, with a wide range of applications. This planter can be equipped with two sets of seed metering devices, two sets of furrowing and soil covering devices, and a straightening and compaction device at the same time, so that two rows of healthy tissue-cultured sugarcane seedlings can be planted simultaneously, improving the planting efficiency. This planter can also be equipped with a liquid spraying device, which can water, spray pesticides or apply liquid fertilizers while planting healthy tissue-cultured sugarcane seedlings, meeting more planting needs. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the planter according to the present invention.

[0025] Figure 2 It is a schematic structural diagram of the furrowing and soil covering device according to the present invention.

[0026] Figure 3 It is a schematic structural diagram of the straightening and compaction device of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the seed metering device of the present invention.

[0028] Main reference numerals description:

[0029] 1. Frame;

[0030] 2. Seed metering device; 21. Seed metering bracket; 22. Rotating shaft; 23. Rotating chain; 24. Seed metering hopper; 25. Guide rail;

[0031] 3. Rotary tillage device;

[0032] 4. Furrowing and soil covering device; 41. Furrowing plate; 42. Planting groove; 43. Soil-returning plate; 44. Soil-dividing plate; 441. Soil-dividing part; 442. Scraping and leveling part; 45. Seed guiding tube;

[0033] 5. Straightening and compaction device; 51. Left soil covering wheel; 52. Right soil covering wheel; 53. Connecting part; 54. Connecting rod;

[0034] 6. Ground wheel; 7. Seed metering opening; 8. Seedling placement rack; 9. Seat. Detailed Description of the Invention

[0035] The following will describe in detail the specific embodiments of the present invention with reference to the drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0036] As Figure 1As shown in the figure, a sugarcane healthy tissue culture seedling planter includes a frame 1, a seed metering device 2, a rotary tillage device 3, a furrowing and soil covering device 4, a righting and compaction device 5, and a ground wheel 6. The seed metering device 2 is arranged above the frame 1. There is a seed metering opening 7 on the frame 1. Above the frame 1, there are a seedling placement rack 8 and a seat 9. The rotary tillage device 3 is arranged in front of the furrowing and soil covering device 4, and the righting and compaction device 5 is arranged behind it. In this embodiment, there are two groups of the seed metering device 2, the furrowing and soil covering device 4, and the righting and compaction device 5, and they are all arranged in the middle of the frame 1. The ground wheel 6 is arranged on both sides of the furrowing and soil covering device 4. The ground wheel 6 adopts an anti-slip convex structure, and a depth-limiting wheel can also be matched at the same time. The matched depth-limiting wheel is of a smooth structure and has a width wider than that of the depth-limiting wheel. The rotary tillage device 3 is used to crush the soil of the planting land; the seed metering device 2 is used to evenly put the sugarcane healthy tissue culture seedlings into the furrowing and soil covering device 4; the furrowing and soil covering device 4 is used for the furrowing planting and soil covering and leveling of the sugarcane healthy tissue culture seedlings; the righting and compaction device 5 is used for further covering the soil and righting the sugarcane healthy tissue culture seedlings, and at the same time compacting the soil around the sugarcane healthy tissue culture seedlings. Compared with the existing dibbling device for planting, the furrowing and soil covering device 4 in this case is not easy to stick to the soil and is not easy to be blocked, has high mechanical reliability, is beneficial to improving the planting efficiency and quality of the sugarcane planter, and the sugarcane healthy tissue culture seedlings are planted at a relatively deep depth, which is beneficial to later management and the sugarcane is not easy to lodge.

[0037] Specifically, in combination with Figure 2, the row-opening soil covering device 4 includes a row-opening plate 41, a planting groove 42, a soil-returning plate 43 and a soil-dividing plate 44. The cross-section of the planting groove 42 is U-shaped and the opening faces backward. The width of the planting groove 42 is slightly wider than the diameter of the cup holder of the healthy sugarcane tissue culture seedling. Further, a funnel-shaped inoculation hopper is provided at the seed discharging port 7, and the lower part of the inoculation hopper is connected to the seed guiding pipe 45. The row-opening plate 41 is provided in front of the planting groove 42. The cross-section of the row-opening plate 41 is V-shaped, and the depth of the row-opening plate 41 is deeper than that of the planting groove 42. Preferably, the depth of the row-opening plate 41 is 5-10 cm deeper than that of the planting groove 42, which is beneficial to form a layer of loose soil under the planting position of the healthy sugarcane tissue culture seedling and is beneficial to the rooting and growth of the healthy sugarcane tissue culture seedling. A seed guiding pipe 45 is provided at the front part inside the planting groove 42, and a seed discharging port is provided at the rear end of the lower part of the seed guiding pipe 45. The height of the seed discharging port is slightly higher than the height of the healthy sugarcane tissue culture seedling. The soil-returning plate 43 is provided behind the planting groove 42. The bottom of the soil-returning plate 43 is inclined, and the depth gradually becomes shallower from the planting groove 42 backward. Preferably, the height difference between the front end and the rear end of the soil-returning plate 43 is 6-8 cm, that is, the soil-returning height is 6-8 cm, realizing shallow soil covering for the healthy sugarcane tissue culture seedling and being beneficial to the tillering and growth of the healthy sugarcane tissue culture seedling. The soil-dividing plate 44 is provided at the rear part outside the planting groove 42. The soil-dividing plate 44 is inclined outward at an angle with the planting groove 42. The soil-dividing plate 44 includes a soil-dividing part 441 and a leveling part 442. The bottom of the soil-dividing part 441 is inclined, and the depth gradually becomes shallower from the planting groove 42 backward. The inclination angle of the bottom of the soil-dividing part 441 is greater than the inclination angle of the soil-returning plate 43. The bottom of the leveling part 442 is horizontal. The setting of the soil-dividing plate 44 is beneficial to leveling the soil on both sides of the planting ditch.

[0038] Specifically, in combination with Figure 3 , the straightening and compacting device 5 includes a left soil covering wheel 51, a right soil covering wheel 52, a connecting part 53 and a connecting rod 54. One end of the connecting rod 54 is connected to the rear part of the frame 1 by bolts, and the other end is provided with the connecting part 53. The left soil covering wheel 51 and the right soil covering wheel 52 are respectively hinged to both ends of the connecting part 53. The left soil covering wheel 51 and the right soil covering wheel 52 are inclined outward from bottom to top, and the distance between the front parts of the left soil covering wheel 51 and the right soil covering wheel 52 is greater than the distance between the rear parts of the left soil covering wheel 51 and the right soil covering wheel 52, being wider at the front and narrower at the rear, which is beneficial to straightening the healthy sugarcane tissue culture seedling. Preferably, there are two groups of the connecting part 53 and the connecting rod 54 of the straightening and compacting device 5. One group of the connecting rod 54 is inclined forward and hinged to the frame 1, and the other group of the connecting rod 54 is inclined backward and hinged to the frame 1, and a spring is sleeved on the connecting rod 54. The setting of the two groups of the connecting rod 54 is more beneficial to the positioning of the left soil covering wheel 51 and the right soil covering wheel 52. At the same time, the depth of the soil covering wheel can be adjusted according to the ground conditions.

[0039] Specific, combined Figure 4 The seeding device 2 includes a seeding bracket 21, a rotating shaft 22, a rotating chain 23, a seeding bucket 24 and a guide rail 25. The rotating shaft 22 and the rotating chain 23 are arranged on the seeding bracket 21. The seeding bucket 24 is fixed at intervals outside the rotating chain 23. The seeding bucket 24 is open at the top and provided with a flap at the bottom. One end of the flap is connected to the seeding bucket 24 through an axle pin; a guide rail 25 is arranged below the seeding bucket 24. The guide rail 25 is annular and parallel to the rotating chain. The guide rail is disconnected at the seeding port 7. The seeding port 7 is located directly below part of the seeding bucket. The height of the healthy tissue culture seedlings of sugarcane is about 20cm. If they are not dropped in time, they will be caught. At the same time, the weight of the healthy tissue culture seedlings of sugarcane is about 30g, which is larger and heavier than the seedlings of other crops. Therefore, the bottom opening of the seeding bucket 24 is opened by gravity. There is a guide rail below the seeding bucket 24, and the seeding bucket is in a closed state under the control of the guide rail. When the seeding device reaches the gap of the guide rail (i.e., the seeding port 7), the bottom flap of the seeding bucket 24 opens without support, and the healthy tissue culture seedlings of sugarcane fall down. Generally, crops are planted on the ground or in ridges, but sugarcane needs to be planted below the ground. The healthy tissue culture seedlings of sugarcane discharged by the seeding device 2 are planted at the required depth under the action of the row-opening and soil-raising device 4. The setting of the seeding device 2 can achieve uniform seeding of healthy tissue culture seedlings of sugarcane, and it is not easy to miss seeds. Furthermore, the rotating shaft 22 of the seeding device 2 is connected to the ground wheel 6 in a transmission manner, and the ground wheel 1 drives the seeding device 2 to operate. The number of seeds of healthy tissue culture seedlings of sugarcane can be synchronized with the ground wheel 1, and at the same time, the seeding amount can be changed by changing the transmission ratio between the ground wheel 1 and the rotating shaft 22.

[0040] Compared with traditional sugarcane stem planters, the combination of the seed-discharging device, row-opening and soil-raising device and the straightening and compacting device of this planter can realize the vertical falling of healthy sugarcane tissue culture seedlings into the soil (roots downward and seedlings upward), and can realize deep planting of healthy sugarcane tissue culture seedlings (planting depth greater than 20cm). At the same time, the base of the seedlings is buried with soil, and the straightening device is used to straighten and compact the seedlings, so that the roots of the healthy sugarcane tissue culture seedlings are in close contact with the soil, which is conducive to growth and tillering.

[0041] In other embodiments, a deep tillage plow is further provided in the middle of the front of the rotary tillage device 3, and the depth of the deep tillage plow is deeper than the depth of the rotary tillage device 3. A liquid spraying device may also be provided on the frame 1. The liquid spraying device includes a water tank, a water pump and a liquid discharge pipe, and the water tank may be used to hold water, or liquid fertilizer or liquid medicine.

[0042] During operation, the worker sits on the seat 9 and places the sugarcane seedling on the sugarcane seedling placement rack 8 into the seed guiding tube 45 of the seed metering device 2 with the root facing down and the seedling facing up. The rotary tillage device 3 is used to crush the soil in the planting area. The ridging and soil covering device 4 is used for ridging planting and soil covering and leveling of healthy sugarcane tissue culture seedlings. The straightening and compaction device 5 is used to further cover the soil and straighten the healthy sugarcane tissue culture seedlings, and at the same time compact the soil around the healthy sugarcane tissue culture seedlings. This planter can achieve deep planting of healthy sugarcane tissue culture seedlings (planting depth greater than 20 cm), which is beneficial to the later management and lodging resistance of sugarcane. At the same time, it can achieve shallow soil covering for healthy sugarcane tissue culture seedlings, cover and level the base of the seedlings with soil, and make the roots of the healthy sugarcane tissue culture seedlings closely contact the soil through the straightening and compaction device, which is beneficial to growth and tillering. Compared with the existing dibbling device for planting, the ridging and soil covering device 4 of this planter is not easy to adhere to soil and is not easy to be blocked, with high mechanical reliability, which is beneficial to improving the planting efficiency and quality of the sugarcane planter. Moreover, the healthy sugarcane tissue culture seedlings are planted at a relatively deep depth, which is beneficial to later management and prevents sugarcane lodging.

[0043] In summary, this planter is provided with structures such as a seed metering device 2, a ridging and soil covering device 4, and a straightening and compaction device 5, which can realize automatic seed metering, planting, soil covering, straightening and compaction of healthy sugarcane tissue culture seedlings. By improving the structure of the ridging and soil covering device 4, the soil covering depth of healthy sugarcane tissue culture seedlings can be adjusted to 6 - 8 cm to achieve shallow soil covering for healthy sugarcane tissue culture seedlings, which is beneficial to the tillering of tissue culture seedlings. At the same time, a layer of loose soil can be formed below the planting position of healthy seedlings, which is beneficial to the rooting and growth of healthy sugarcane tissue culture seedlings. The planter of the present invention can be used in clay loam areas, sloping lands or sandy loam soils, with a wide range of applications.

[0044] The foregoing description of specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A sugarcane healthy tissue culture seedling planter, comprising a frame, a seed metering device, a rotary tillage device, a furrowing and soil covering device, a straightening and compressing device and a ground wheel. The rotary tillage device is arranged in front of the furrowing and soil covering device, and the straightening and compressing device is arranged behind the furrowing and soil covering device. The seed metering device is arranged above the frame, and a seed metering opening is arranged on the frame. It is characterized in that the furrowing and soil covering device comprises a furrowing plate, a planting groove, a soil returning plate and a soil dividing plate; the cross-section of the planting groove is U-shaped or V-shaped, and the opening faces backward. The furrowing plate is arranged in front of the planting groove, and the cross-section of the furrowing plate is V-shaped. The depth of the furrowing plate is deeper than that of the planting groove; a seed guiding pipe is arranged at the front part inside the planting groove, and a seed discharging opening is arranged at the rear end of the lower part of the seed guiding pipe; the soil returning plate is arranged behind the planting groove, the bottom of the soil returning plate is inclined, and the depth gradually becomes shallower from the planting groove backward; the soil dividing plate is arranged at the rear part outside the planting groove, the soil dividing plate is inclined and arranged outward at an angle with the planting groove. The soil dividing plate comprises a soil dividing part and a leveling part. The bottom of the soil dividing part is inclined, and the depth gradually becomes shallower from the planting groove backward. The inclination angle of the bottom of the soil dividing part is larger than the inclination angle of the soil returning plate. The bottom of the leveling part is horizontal; the straightening and compressing device comprises a left soil covering wheel, a right soil covering wheel, a connecting part and a connecting rod. One end of the connecting rod is connected to the rear part of the frame by a bolt, and the other end is provided with the connecting part. The left soil covering wheel and the right soil covering wheel are respectively hinged to the two ends of the connecting part. The left soil covering wheel and the right soil covering wheel are respectively inclined and arranged inward from top to bottom, and the distance between the front parts of the left soil covering wheel and the right soil covering wheel is larger than the distance between the rear parts of the left soil covering wheel and the right soil covering wheel.

2. The sugarcane healthy tissue culture seedling planter according to claim 1, wherein The depth of the furrowing plate is 5-10 cm deeper than that of the planting groove.

3. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, The height difference between the front end and the rear end of the soil returning plate is 5-8 cm.

4. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, There are two groups of the connecting part and the connecting rod of the straightening and compressing device. One group of the connecting rods is inclined forward and hinged to the frame, and the other group of the connecting rods is inclined backward and hinged to the frame. And a spring is sleeved on the connecting rod.

5. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, A subsoiler is also arranged in the middle in front of the rotary tillage device, and the depth of the subsoiler is deeper than that of the rotary tillage device.

6. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, There are two groups of the seed metering devices, and the furrowing and soil covering devices and the straightening and compressing devices are also provided with two groups in a matching way.

7. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, A seedling placing rack and a seat are arranged above the frame, and a liquid spraying device is also arranged on the frame.

8. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, The seed metering device comprises a seed metering bracket, a rotating shaft, a rotating chain, a guide rail and a seed metering hopper. The rotating shaft and the rotating chain are arranged on the seed metering bracket. The seed metering hoppers are fixedly arranged at intervals on the outer side of the rotating chain. The top of the seed metering hopper is open, and a flip cover is arranged at the bottom. One end of the flip cover is connected to the seed metering hopper by a pin. The guide rail is arranged below the seed metering hopper. The guide rail is annular and parallel to the rotating chain. The guide rail is disconnected at the seed metering opening, and the seed metering opening is located directly below part of the seed metering hoppers.

9. The sugarcane healthy tissue culture seedling planter according to claim 8, characterized in that, The rotating shaft of the seed metering device is in transmission connection with the ground wheel, and the ground wheel drives the seed metering device to operate.

10. The sugarcane healthy tissue culture seedling planter according to claim 1, characterized in that, A funnel-shaped inoculation hopper is provided at the seed metering opening. The lower part of the inoculation hopper is connected to the seed guiding tube, and the height of the seed guiding tube is 18 - 25 cm.

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