A peanut inter-row tiller

Abstract

This utility model relates to a peanut inter-row tiller and hilling machine, belonging to the field of agricultural machinery technology. The technical solution is as follows: a hydraulic cylinder support is provided between the front beam and rear crossbeam of the frame. A hydraulic cylinder is mounted on the hydraulic cylinder support. Hydraulic cylinder mounting seats at both ends of the hydraulic cylinder are connected to the hydraulic cylinder support and the end support, respectively. The hydraulic cylinder drives the telescopic sleeve structure to extend and retract. The lower part of the hilling device mounting seat is hinged to the support arm via support arm bolts. Hilling wheels are located at the rear of the two hilling wheel mounting plates. The hilling wheels are arranged at an angle to the furrow line, with the two hilling wheels tilting in opposite directions, forming a V-shape with their openings facing rearward. The beneficial effects of this utility model are: the hilling height and soil volume can be adjusted according to the furrow width, ensuring that the peanut pegging reaches the soil during the flowering period, improving the peanut pegging rate and fruiting rate; the height of the hilling mechanism automatically adjusts according to the shape of the furrow, allowing for convenient adjustment of the hilling height and adaptation to the furrow width.

Description

Technical Field

[0001] This utility model relates to a peanut cultivation and hilling machine, belonging to the field of agricultural machinery technology. Background Technology

[0002] Peanut ridging and mulching technology has been widely adopted in recent decades due to its advantages in increasing soil temperature and moisture, preventing drought, suppressing weed growth, protecting and promoting root growth and development, advancing maturity, and increasing yield. Intertillage and hilling are crucial field management practices during peanut growth. They improve soil conditions, regulate soil water, fertilizer, air, and heat, increase soil aeration, improve root oxygen supply, and ensure normal and effective pegging. During the mid-growth stage of peanuts, intertillage, weeding, and ridging are necessary. The use of intertillage and hilling machines significantly reduces labor intensity, improves work efficiency, prevents empty pegging, and increases peanut yield. However, while there are many types of existing intertillage and hilling machines, they are all suitable for crops such as potatoes, corn, cotton, tobacco, and sugarcane; there is no machine specifically designed for peanuts. Because peanuts must peek into the soil and establish roots extensively before they can bear fruit, high peanut yields require hilling and ridge protection during cultivation. Peanut ridges are relatively wide (about 10 centimeters or more wider than ridges of other ridged crops), so extensive hilling is needed during cultivation to maintain the width of the peanut ridges.

[0003] Existing technologies often employ a pair of rotary or spiral hilling wheels as the hilling mechanism, with both wheels arranged parallel to the furrow line. Examples include Chinese patent applications CN201711470147.7, "An Adjustable Inter-row Cultivator and Hilling Machine"; CN 201721122889.6, "Inter-row Cultivator and Hilling Equipment"; and CN202220545719.3, "A Compound Auger Inter-row Cultivator and Hilling Device." Because there is no angle between the hilling wheels and the furrow line, it cannot achieve a large amount of hilling on the peanut ridges. Soil on the ridge slope easily slides down, resulting in insufficient hilling on the peanut ridges. This affects the peanut's ability to peg without pods during flowering, reducing the fruiting rate and causing yield reduction. Furthermore, existing inter-row cultivators and hilling machines have inconvenient hilling height and furrow width adjustment capabilities, and the machine cannot automatically adjust the hilling mechanism height according to the furrow shape, making them unsuitable for universal operation. Utility Model Content

[0004] The purpose of this utility model is to provide a peanut inter-row cultivation and hilling machine. During peanut inter-row cultivation and management, the hilling height and soil volume can be adjusted according to the width of the furrow to ensure that the peanut pegging reaches the soil during the flowering period, thereby improving the pegging rate and fruiting rate. The height of the hilling mechanism is automatically adjusted according to the shape of the furrow, which can easily adjust the hilling height, hilling volume and adapt to the width of the furrow. It is easy to use, has a simple structure and solves the above-mentioned technical problems existing in the prior art.

[0005] The technical solution of this utility model is: a peanut inter-row tiller and hilling machine, comprising a frame, support wheels, an inter-row tiller, and a hilling mechanism. Support wheels are located at the lower front of the frame, and the inter-row tiller and hilling mechanism are located at the lower rear of the frame, with the inter-row tiller in front and the hilling mechanism behind. The frame comprises a rectangular frame consisting of a front beam, a rear crossbeam, and end supports. The front beam and rear crossbeam are arranged parallel to each other, and both ends of the front beam and rear crossbeam are connected by end supports with identical structures. Each end support has a support beam at both ends, which is sleeved with the front beam and rear crossbeam via their respective telescopic beams, forming a telescopic sleeve structure. A hydraulic cylinder support is provided between the front beam and rear crossbeam, and a hydraulic cylinder is mounted on the hydraulic cylinder support. The cylinder mounting seats at both ends of the cylinder are connected to the cylinder bracket and the end bracket respectively. The cylinder drives the sleeve telescopic structure to extend and retract. The soil-raising mechanism includes a soil-raising device mounting seat, a support arm, two soil-raising wheel mounting plates and two soil-raising wheels. The soil-raising device mounting seat is suspended at the rear of the frame. The lower part of the soil-raising device mounting seat is hinged to the support arm through support arm bolts. The front part of the support arm is provided with a fixed seat flange. Fixed seats are provided on both sides of the fixed seat flange. The two fixed seats are respectively hinged to the front end of the soil-raising wheel mounting plate through pins. The support arm is located in the middle of the two soil-raising wheel mounting plates. The rear part of the two soil-raising wheel mounting plates is provided with soil-raising wheels. The soil-raising wheels are arranged at an angle to the furrow line. The two soil-raising wheels are inclined in opposite directions and arranged in a figure-eight shape with the opening facing backward.

[0006] Furthermore, the upper part of the soil-cultivating device mounting base is hinged to the upper end of the shock absorber via the upper mounting shaft of the shock absorber, and the lower end of the shock absorber is hinged to the support arm via the lower mounting shaft of the shock absorber. The height of the soil-cultivating wheel is automatically adjusted according to the shape of the ground surface by the shock absorber spring inside the shock absorber.

[0007] Furthermore, the two hilling wheel mounting plates are connected to the support arm via their respective adjustment plates. One end of the adjustment plate is hinged to the hilling wheel mounting plate via an adjustment plate bolt, and the other end of the adjustment plate is provided with multiple position adjustment holes. After the position adjustment holes of the two hilling wheel mounting plates overlap, they are hinged to the support arm via an adjustment plate bolt. By changing the engagement of the adjustment plate bolt with different position adjustment holes, the distance between the hilling wheel mounting plate and the support arm is changed, thereby adjusting the inclination angle between the two hilling wheels and the furrow line.

[0008] Furthermore, the two hilling wheels are arranged symmetrically along the furrow line, and the inclination angles of the two hilling wheels with the furrow line are symmetrical and equal.

[0009] Furthermore, the soil-cultivating wheel mounting plate is provided with multiple soil-cultivating device mounting holes, and the soil-cultivating wheel shaft passes through one of the soil-cultivating device mounting holes and is fastened to the soil-cultivating wheel mounting plate by a positioning nut; the soil-cultivating wheel shaft is connected to the soil-cultivating wheel through a soil-cultivating wheel bearing seat and an inner bearing; a soil-cultivating wheel baffle is provided at the outer center of the soil-cultivating wheel.

[0010] Furthermore, the soil-laying wheel has multiple curved strips on its circumference, all of which are curved in the direction of the soil-laying wheel's movement, resembling a whirlwind.

[0011] Furthermore, a support rod mounting seat is provided on the rear crossbeam of the frame, and a support rod is vertically mounted downwards on the support rod mounting seat. A clamping plate is mounted on the middle part of the support rod by clamping plate bolts. The upper and lower parts of the clamping plate are respectively matched and clamped on the support rod with a U-shaped upper positioning plate and a U-shaped lower positioning plate. The upper and lower positioning plates are fixed to the soil-raising device mounting seat by positioning plate bolts. A tillage plow is mounted on the bottom of the support rod.

[0012] Furthermore, the support rod mounting seat is installed on the rear crossbeam by a U-shaped clamp. The support rod mounting seat has a through hole through which the mounting rod passes. The wall of the through hole of the support rod mounting seat is provided with a set screw that matches the mounting rod. The height of the mounting rod in the support rod mounting seat is adjustable and positioned by the set screw. Adjusting the height of the mounting rod can adjust the height of the tiller and the hilling mechanism.

[0013] Furthermore, the mounting base of the hilling device is provided with a vertically connected pipe as a pre-installed fertilizer pipe, which can be used in conjunction with existing and commonly known fertilizer application mechanisms to apply fertilizer while cultivating and hilling the soil.

[0014] This utility model relates to telescopic sleeve structure, inter-row plow and shock absorber, etc., all of which are technologies known and commonly used in the field. This patent application can set the working width according to the width of the furrow, and the inclined soil-laying wheel can increase the soil breaking rate and increase the amount of soil-laying on the ridge slope, ensuring that when peanuts peg, all the pegs are placed in the soil, thereby improving the fruiting rate and increasing peanut yield.

[0015] The beneficial effects of this utility model are as follows: When cultivating peanuts, the height and amount of soil can be adjusted according to the width of the furrow to ensure that the peanut pegging reaches the soil during the flowering period, thereby improving the pegging rate and fruiting rate. The height of the soil-building mechanism can be automatically adjusted according to the shape of the furrow, making it convenient to adjust the soil-building height and adapt to the width of the furrow. It is easy to use and has a simple structure. At the same time, it can effectively remove weeds and leave a fertilizer tube for convenient and timely fertilization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the soil-raising mechanism according to an embodiment of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the soil-raising mechanism according to an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of an embodiment of the present utility model;

[0019] Figure 4 This is a side view of an embodiment of the present invention;

[0020] In the diagram: 1. Support beam; 2. Suspension bracket; 3. Front beam of frame; 4. Hydraulic cylinder bracket; 5. End bracket; 6. Rear crossbeam; 7. Support wheel bracket seat; 8. Support wheel side plate; 9. Support wheel; 10. U-bolt; 11. Hydraulic cylinder; 12. Hydraulic cylinder mounting seat; 13. Support rod mounting seat; 14. Intermediate tiller; 15. Ripper mounting seat; 16. Pre-installed fertilizer pipe; 17. Lower mounting shaft of shock absorber; 18. Upper mounting shaft of shock absorber; 19. Shock absorber; 20. Suspension point; 21. Support arm bolt; 22. Support arm; 23. Ripper wheel; 24. Adjusting plate; 25. Positioning nut; 16. Adjusting plate bolt. 26. Spreading wheel mounting plate; 27. Pin shaft; 28. Fixing seat; 29. ​​Bolt; 30. Spreading wheel baffle; 31. Spreading wheel bearing seat; 32. Inner bearing; 33. Spreading wheel shaft; 34. Clamping plate bolt; 35. Positioning plate bolt; 36. Lower positioning plate; 37. Set screw; 38. Upper positioning plate; 39. Clamping plate; 40. Mounting support rod; 41. Telescopic beam; 42. Fixing seat flange; 43. Upper hole; 44. Lower hole; 45. Support arm bushing; 46. Mounting hole; 47. Bushing; 48. Spreading device mounting hole; 49. Adjusting plate bolt II; 50. Position adjustment hole; 51. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See attached document Figure 1-4 A peanut inter-row tiller and hilling machine includes a frame, support wheels 9, a tiller 14, and a hilling mechanism. The support wheels 9 are located at the lower front of the frame, and the tiller 14 and hilling mechanism are located at the lower rear of the frame, with the tiller 14 in front and the hilling mechanism behind. The frame comprises a rectangular frame consisting of a front beam 3, a rear crossbeam 6, and end supports 5. The front beam 3 and rear crossbeam 6 are arranged parallel to each other, and both ends of the front beam 3 and rear crossbeam 6 are connected by end supports 5 with identical structures. Each end support 5 has a support beam 1 at both ends, which is connected to the front beam 3 and rear crossbeam 6 by their respective telescopic beams 42, forming a telescopic sleeve structure. A cylinder support 4 is provided between the front beam 3 and rear crossbeam 6, and a cylinder 11 is mounted on the cylinder support 4. Cylinder mounting seats 12 at both ends of the cylinder 11 are respectively... The cylinder 11 is connected to the cylinder bracket 4 and the end bracket 5, and drives the sleeve telescopic structure to extend and retract. The soil-raising mechanism includes a soil-raising device mounting base 15, a support arm 22, two soil-raising wheel mounting plates 27 and two soil-raising wheels 23. The soil-raising device mounting base 15 is suspended at the rear of the frame. The lower part of the soil-raising device mounting base 15 is hinged to the support arm 22 through the support arm bolt 21. The front part of the support arm 22 is provided with a fixed seat flange 43. Fixed seats 29 are provided on both sides of the fixed seat flange 43. The two fixed seats 29 are respectively hinged to the front end of the soil-raising wheel mounting plate 27 through the pin 28. The support arm 22 is located in the middle of the two soil-raising wheel mounting plates 27. The rear part of the two soil-raising wheel mounting plates 27 is provided with soil-raising wheels 23. The soil-raising wheels 23 are inclined to the furrow line. The two soil-raising wheels are inclined in opposite directions and arranged in a figure-eight shape with the opening facing the rear.

[0023] The upper part of the soil-laying device mounting base 15 is hinged to the upper end of the shock absorber 19 via the upper mounting shaft 18 of the shock absorber, and the lower end of the shock absorber 19 is hinged to the support arm 22 via the lower mounting shaft 17 of the shock absorber. The height of the soil-laying wheel is automatically adjusted according to the shape of the furrow by the shock absorber spring inside the shock absorber 19.

[0024] The two hilling wheel mounting plates 27 are connected to the support arm 22 by their respective adjustment plates 24. One end of the adjustment plate 24 is hinged to the hilling wheel mounting plate 27 by adjustment plate bolt 20, and the other end of the adjustment plate 24 is provided with multiple position adjustment holes 51. After the position adjustment holes 51 of the two hilling wheel mounting plates 27 overlap, they are hinged to the support arm 22 by adjustment plate bolt 1 26. By changing the engagement of adjustment plate bolt 1 26 with different position adjustment holes 51, the distance between the hilling wheel mounting plate 27 and the support arm 22 is changed, thereby adjusting the inclination angle between the two hilling wheels 23 and the furrow line.

[0025] The two hilling wheels 23 are arranged symmetrically along the furrow line, and the two hilling wheels 23 are inclined at equal angles to the furrow line.

[0026] The soil-cultivating wheel mounting plate 27 is provided with multiple soil-cultivating device mounting holes 49. The soil-cultivating wheel shaft 34 passes through one of the soil-cultivating device mounting holes 49 and is fastened to the soil-cultivating wheel mounting plate 27 by a positioning nut 25. The soil-cultivating wheel shaft 34 is connected to the soil-cultivating wheel 23 through the soil-cultivating wheel bearing seat 32 and the inner bearing 33. The outer center of the soil-cultivating wheel 23 is provided with a soil-cultivating wheel baffle 31.

[0027] The soil-laying wheel 23 has multiple curved strips on its circumference, all of which are curved in the direction of the soil-laying wheel's movement, resembling a windmill.

[0028] The rear crossbeam 6 of the frame is provided with a support rod mounting seat 13. A support rod 41 is vertically mounted downward on the support rod mounting seat 13. A clamping plate 40 is mounted on the middle of the support rod 41 by clamping plate bolts 35. The upper and lower parts of the clamping plate 40 are matched and clamped on the support rod 41 with U-shaped upper positioning plate 39 and U-shaped lower positioning plate 37, respectively. The upper positioning plate 39 and lower positioning plate 37 are fixed to the soil-raising device mounting seat 15 by positioning plate bolts 36. A tillage plow 14 is mounted on the bottom of the support rod 41.

[0029] The support rod mounting base 13 is mounted on the rear crossbeam 6 via a U-shaped clamp. The support rod mounting base 13 has a through hole through which the mounting rod 41 passes. The wall of the through hole is provided with a set screw 38 that matches the mounting rod 41. The height of the mounting rod 41 in the support rod mounting base 13 is adjustable and is positioned by the set screw 38. Adjusting the height of the mounting rod 41 can adjust the height of the tiller 14 and the hilling mechanism.

[0030] The hilling device mounting base 15 is provided with a vertically connected pipe as a reserved fertilizer pipe 16, which can be used in conjunction with existing and commonly known fertilizer application mechanisms to apply fertilizer while cultivating and hilling.

[0031] In this embodiment, the suspension bracket 2 is provided with a suspension point 20 that is connected to the vehicle suspension to provide forward power.

[0032] The support wheel 9 is installed at the front end of the frame in sequence via support wheel side plates 8, support wheel bracket seats 7, and U-bolts 10. The support wheel bracket seat 7 is fastened to the support beam 1 of the end bracket 5 by U-bolts 10. Support wheel side plates 8 are arranged parallel to each other on the two outer sides of the support wheel bracket seat 7. The upper part of the two parallel support wheel side plates 8 is connected to the support wheel bracket seat 7. Support wheels 9 are set at the ends of the two parallel support wheel side plates 8 and are connected to the two parallel support wheel side plates 8 through the support wheels 9.

[0033] The two support beams 1 are arranged vertically at the two ends of the end bracket 5, forming a "〔" shape. The ends of the two "〔"-shaped end brackets 5 are respectively welded to their respective telescopic beams 42, and the telescopic beams 42 are respectively connected to the front beam 3 and the rear crossbeam 6 of the frame.

[0034] The suspension bracket 2 passes through and is welded together with the front beam 3 and the rear beam 6 of the frame to form a frame structure. Hydraulic cylinder brackets 4 are respectively installed in the left and right spaces of the frame structure. The hydraulic cylinder brackets 4 are welded to the front beam 3 and the rear beam 3 of the frame, and hydraulic cylinders 11 are installed on the hydraulic cylinder brackets 4.

[0035] The tillage plow 14 consists of a plow handle, a plow head mounting seat, and a plow head, which is a known technology. The reserved fertilizer tube 16 is a common steel pipe, which is a reserved component for matching fertilizer applicators when peanuts need supplemental fertilization.

[0036] The soil mounting base 15 is an integral structure with a pair of vertically aligned connecting holes at its end. The upper hole 44 is a hinge hole for the upper mounting shaft 18 of the shock absorber and one end of the shock absorber 19. The lower hole 45 is connected to the support arm bushing 46 at the front end of the support arm 22 through the support arm bolt 21. At the same time, the lower mounting shaft 17 of the shock absorber is set above the end of the support arm 22 and connected to the other end of the shock absorber. The soil mounting base 15, the shock absorber 19 and the support arm 22 form a right triangle, which plays a role in structural stability.

[0037] A fixing flange 43 is provided on the support arm 22 for mounting the soil-spreading wheel mounting plate 27 and the soil-spreading wheel 23. A fixing seat 29, consisting of two rectangular steel plates, is used to mount the soil-spreading device mounting plate 27. The fixing seat 29 has mounting holes 47 and is fastened to the fixing flange 43 by bolts 30. The soil-spreading device mounting plate 27 is a pair of long strip plates with bushings 48 at its front end, which are hinged to the fixing seat 29 by pins 28.

[0038] The number of tillage plows 14 and the number of ridging mechanisms are both four, and the four tillage plows 14 and the four ridging mechanisms are set on the same frame.

Claims

1. A peanut inter-row tiller, comprising a frame, support wheels (9), an inter-row tiller (14), and a hilling mechanism, wherein the support wheels (9) are arranged at the lower front of the frame, and the inter-row tiller (14) and the hilling mechanism are arranged at the lower rear of the frame, with the inter-row tiller (14) in front and the hilling mechanism in the rear; characterized in that: The frame comprises a rectangular frame consisting of a front beam (3), a rear crossbeam (6), and end supports (5). The front beam (3) and the rear crossbeam (6) are arranged parallel to each other. Both ends of the front beam (3) and the rear crossbeam (6) are connected by end supports (5) with identical structures. Each end support (5) has a support beam (1) at both ends. The support beam (1) is connected to the front beam (3) and the rear crossbeam (6) through their respective telescopic beams (42) to form a telescopic sleeve structure. A cylinder support (4) is provided between the front beam (3) and the rear crossbeam (6). A cylinder (11) is provided on the cylinder support (4). The cylinder mounting seats (12) at both ends of the cylinder (11) are connected to the cylinder support (4) and the end supports (5) respectively. The cylinder (11) drives the telescopic sleeve structure to extend and retract. The soil-raising mechanism includes The machine includes a soil-raising device mounting base (15), a support arm (22), two soil-raising wheel mounting plates (27), and two soil-raising wheels (23). The soil-raising device mounting base (15) is suspended at the rear of the frame. The lower part of the soil-raising device mounting base (15) is hinged to the support arm (22) by a support arm bolt (21). The front part of the support arm (22) is provided with a fixed seat flange (43). Fixed seats (29) are provided on both sides of the fixed seat flange (43). The two fixed seats (29) are respectively hinged to the front end of the soil-raising wheel mounting plate (27) by a pin (28). The support arm (22) is located in the middle of the two soil-raising wheel mounting plates (27). The rear part of the two soil-raising wheel mounting plates (27) is provided with soil-raising wheels (23). The soil-raising wheels (23) are arranged at an angle to the furrow line. The two soil-raising wheels (23) are inclined in opposite directions and arranged in a figure-eight shape with the opening facing the rear.

2. The peanut inter-row tillage and hilling machine according to claim 1, characterized in that: The upper part of the soil-cultivating device mounting base (15) is hinged to the upper end of the shock absorber (19) via the upper mounting shaft (18) of the shock absorber, and the lower end of the shock absorber (19) is hinged to the support arm (22) via the lower mounting shaft (17) of the shock absorber.

3. A peanut inter-row tillage and hilling machine according to claim 1 or 2, characterized in that: The two soil-laying wheel mounting plates (27) are connected to the support arm (22) by their respective adjustment plates (24). One end of the adjustment plate (24) is hinged to the soil-laying wheel mounting plate (27) by adjustment plate bolt two (50), and the other end of the adjustment plate (24) is provided with multiple position adjustment holes (51). After the position adjustment holes (51) of the two soil-laying wheel mounting plates (27) overlap, they are hinged to the support arm (22) by adjustment plate bolt one (26).

4. A peanut inter-row tillage and hilling machine according to claim 3, characterized in that: The two hilling wheels (23) are arranged symmetrically along the furrow line, and the two hilling wheels (23) are symmetrical and equal in inclination angle with the furrow line.

5. A peanut inter-row tillage and hilling machine according to claim 1 or 2, characterized in that: The soil-cultivating wheel mounting plate (27) is provided with multiple soil-cultivating device mounting holes (49). The soil-cultivating wheel shaft (34) passes through one of the soil-cultivating device mounting holes (49) and is fastened to the soil-cultivating wheel mounting plate (27) by a positioning nut (25). The soil-cultivating wheel shaft (34) is connected to the soil-cultivating wheel (23) through the soil-cultivating wheel bearing seat (32) and the inner bearing (33). The outer center of the soil-cultivating wheel (23) is provided with a soil-cultivating wheel baffle (31).

6. A peanut inter-row tillage and hilling machine according to claim 1 or 2, characterized in that: The soil-laying wheel (23) has multiple curved strips on its circumference, and all the curved strips are curved in the direction of the soil-laying wheel's movement.

7. A peanut inter-row tillage and hilling machine according to claim 1 or 2, characterized in that: The rear crossbeam (6) of the frame is provided with a support rod mounting seat (13). A support rod (41) is vertically mounted on the support rod mounting seat (13). A clamping plate (40) is mounted on the middle part of the support rod (41) by clamping plate bolts (35). The upper and lower parts of the clamping plate (40) are matched and clamped on the support rod (41) with the upper positioning plate (39) and the lower positioning plate (37) of the U-shape, respectively. The upper positioning plate (39) and the lower positioning plate (37) are fixed to the soil-raising device mounting seat (15) by positioning plate bolts (36). A tillage plow (14) is installed at the bottom of the support rod (41).

8. A peanut inter-row tillage and hilling machine according to claim 7, characterized in that: The support rod mounting seat (13) is installed on the rear crossbeam (6) by a U-shaped clamp. The support rod mounting seat (13) has a through hole, through which the mounting rod (41) passes. The wall of the through hole of the support rod mounting seat (13) is provided with a set screw (38) that matches the mounting rod (41). The height of the mounting rod (41) in the support rod mounting seat (13) is adjustable and positioned by the set screw (38).

9. A peanut inter-row tillage and hilling machine according to claim 1 or 2, characterized in that: The soil-laying device mounting base (15) is provided with a vertically connected pipe as a pre-reserved fertilizer pipe (16).

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