Multifunctional film mulching seeder

Abstract

The present application relates to the field of agricultural machinery technology, and discloses a multifunctional film mulching seeder, which comprises a frame assembly, a suspension connecting head and a central transmission box are arranged at the front end of the frame assembly; along the traveling direction of the frame assembly, a rotary tillage and soil breaking unit is sequentially and integrally installed from front to back, is arranged below the front end of the frame assembly, is connected with the central transmission box through a gear transmission mechanism, and is used for breaking soil and forming a seedbed; the device integrates more than ten processes such as seedbed preparation, drip irrigation tape ditching and laying, fertilization ditch and seeding ditch opening, fertilization, drip irrigation tape ditch and fertilization ditch covering, film mulching, film edge compaction and covering, film hole punching and seeding, etc. in one operation, avoids the multiple soil rolling of traditional segmented operation, significantly reduces energy consumption and labor cost, reduces soil moisture evaporation, and is beneficial to soil conservation and yield increase.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a multi-functional mulching and seeding machine. Background Technology

[0002] In modern agricultural production, seedbed preparation, drip irrigation tape installation, fertilization, mulching, and sowing are key operational steps to ensure high and stable crop yields, especially in arid and semi-arid regions with mulched planting models (such as corn, cotton, and potatoes). Typical tillage procedures include: pre-sowing rotary tillage to create a fine and level seedbed; furrowing (drip irrigation furrows, sowing furrows, and fertilization furrows); laying drip irrigation tape or pipes; applying basal or seed fertilizer; mulching the surface to retain moisture, increase temperature, and suppress weeds; sowing through holes in the mulch; and subsequent treatments such as mulching and edge covering. The quality of each of these procedures directly affects the germination rate, water and fertilizer use efficiency, and final yield.

[0003] In traditional agricultural production, the above-mentioned processes are usually completed in stages using multiple single-function machines. For example, a rotary tiller first prepares the land, then a ditching and pipe-laying machine lays drip irrigation tape, followed by a fertilizer applicator spreading fertilizer or applying it in strips, then a mulching machine covers the mulch film and presses down the edges, and finally a seeder punches holes in the film to sow seeds. This segmented operation mode has the following prominent problems: First, multiple machines repeatedly enter the same plot of land and repeatedly compact it, resulting in a significant increase in soil compaction, damaging the soil aggregate structure, reducing soil permeability and water retention capacity, while also increasing tractor fuel consumption and labor costs; Second, the time interval between each process is relatively long, especially in dry and windy areas in spring, where soil moisture evaporates rapidly after rotary tillage, making it difficult to maintain good soil moisture before mulching, affecting seedling emergence; Third, multiple visits to the field delay the planting season, which may lead to missing the optimal sowing window when the suitable sowing period is short; Fourth, the independent operation of each machine leads to fragmented field management, increasing farmers' equipment purchase costs and the difficulty of organizing operations.

[0004] In recent years, some combined-operation machines have emerged that integrate several functions, such as rotary tillage, fertilization, mulching, and seeding machines, which can simultaneously complete rotary tillage, fertilization, mulching, and seeding. However, existing combined-operation machines still have significant limitations: First, most models cannot simultaneously complete the differentiated opening and laying of drip irrigation furrows, seeding furrows, and fertilization furrows in a single operation, usually requiring separate furrow openers or subsequent supplementary laying; second, the lateral spacing of furrowing, fertilization, and seeding units is mostly fixed or manually adjustable, making it difficult to adapt to the rapid adjustment needs of different crop row spacings. Therefore, how to design an agricultural machine that can highly integrate multiple processes such as seedbed preparation, drip irrigation tape laying, fertilization, furrowing, soil covering, mulching, compaction, and seeding into a single operation, with flexible adjustment of the position of each working unit, remains a pressing technical problem to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional film-mulching seeder to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-functional film-mulching seeder, comprising:

[0007] A frame assembly, wherein a suspension connector and a central transmission box are provided at the front end of the frame assembly;

[0008] Along the travel direction of the frame assembly, the following components are sequentially integrated and installed from front to back:

[0009] The rotary tillage and soil-breaking unit is located below the front end of the frame assembly and is connected to the central transmission box via a gear transmission mechanism. It is used to break up the soil and form a seedbed.

[0010] An integrated ditching unit is located behind the rotary tillage and soil-breaking unit, and is used to simultaneously open drip irrigation trenches, sowing trenches and fertilization trenches on the seed bed;

[0011] The drip irrigation tape laying unit is located above and behind the rotary tillage and soil breaking unit, and is used to lay the drip irrigation tape in the drip irrigation tape trench opened by the integrated trenching unit.

[0012] An adjustable fertilization unit is located behind the rotary tillage and soil-breaking unit and is used to apply fertilizer into the fertilization trench opened by the integrated trenching unit.

[0013] An integrated soil covering unit is located behind the adjustable fertilization unit and is used to cover the drip irrigation tape trenches and fertilization trenches that have been laid and fertilized with soil.

[0014] The mulch film covering unit is located behind the integrated soil covering unit and is used to lay mulch film on the soil surface after soil covering.

[0015] A mulch film compaction unit is located behind the mulch film covering unit and is used to compact the mulch film and cover it with soil.

[0016] An adjustable seeding unit is located behind the mulch film compaction unit and is used to make holes in the mulch film for seeding. The horizontal projection of the adjustable seeding unit is located between the drip irrigation tape laying unit and the adjustable fertilization unit, so that the seeding row, drip irrigation tape row, and fertilization row maintain a predetermined relative position in the lateral direction.

[0017] The integrated trenching unit simultaneously opens three types of trenches and is spatially and functionally coupled with subsequent processes such as laying strips, fertilizing, covering with soil, covering with film, compacting, and sowing, forming an integrated operation chain that completes seedbed preparation, drip irrigation tape laying, fertilizing, covering with soil, covering with film, compacting with film, and precision sowing in one operation.

[0018] According to the above technical solution, the rack assembly includes:

[0019] A front-mounted frame, the front end of which is connected to the traction equipment via the suspension connector;

[0020] A central rack is hinged to the rear end of the front rack. The central rack consists of two mirror-symmetrical fixed frames and a reinforcing block fixedly installed between the fixed frames. A gap channel is left between the two fixed frames.

[0021] The first hydraulic cylinder is mirror-symmetrically arranged between the front frame and the middle frame. The cylinder body of the first hydraulic cylinder is movably mounted on the top of the front frame, and the telescopic end of the first hydraulic cylinder is movably connected to the top of the middle frame.

[0022] The rear rack is located at the rear end of the central rack.

[0023] According to the above technical solution, the rotary tillage and soil-breaking unit includes:

[0024] The housing is fixedly installed to the lower end of the front frame by bolts;

[0025] A rotary tiller shaft is movably installed inside the housing, and rotary tiller blades are evenly distributed along the axial direction of the rotary tiller shaft;

[0026] The gear transmission mechanism includes:

[0027] A drive shaft is rotatably mounted on the upper end of the front frame via a shaft seat. One end of the drive shaft is connected to the central transmission box, and the other end of the drive shaft is fixedly mounted with a first pulley.

[0028] The second pulley is fixedly installed on one end of the rotary tiller that protrudes from the cover, and the second pulley is connected to the first pulley by belt drive.

[0029] According to the above technical solution, the drip irrigation tape laying unit includes:

[0030] A central fixing column is arranged in a mirror-symmetrical manner above the rear end of the front frame;

[0031] A detachable crossbeam is detachably mounted between the bifurcations at the top of the central fixed column;

[0032] A drip irrigation tape reel is located in the middle of the detachable crossbeam, and movable sleeves are provided on both sides of the drip irrigation tape reel, which are movably sleeved on the detachable crossbeam.

[0033] The drip irrigation tape is delivered downstream via the gap channel between the two fixed frames.

[0034] According to the above technical solution, the adjustable fertilization unit includes:

[0035] The dual-chamber fertilizer bin is fixedly installed on the upper end of the central frame. The interior of the dual-chamber fertilizer bin is divided into two symmetrical fertilizer chambers by a partition. Each fertilizer chamber is provided with an independent bottom feeding pipe at the bottom. The end of the bottom feeding pipe is provided with a fertilizer application head. The fertilizer application head is adjusted laterally by a first alignment adjustment mechanism.

[0036] The first alignment adjustment mechanism includes:

[0037] A guide rod, which is mirror-symmetrically arranged between the two fixed frames;

[0038] A connecting rod, one end of which is fixedly connected to the fertilizer head, and the other end of which is movably sleeved on the guide rod;

[0039] A first servo motor is fixedly installed at the lower end of the fixed frame on one side. A rotating shaft is fixedly installed at the output end of the first servo motor. The rotating shaft passes through and is movably installed in the fixed frame on the other side. The threads on both sides of the rotating shaft are in opposite directions. A branch rod is fixedly provided on the side wall of the guide rod. The branch rod is threadedly connected to the rotating shaft.

[0040] According to the above technical solution, the mulch film covering unit includes:

[0041] A bottom bracket is fixedly installed at the lower end of the rear frame;

[0042] A plastic film roller, which is movably mounted between the bottom supports;

[0043] The plastic film compaction unit includes:

[0044] The plastic film pressing wheel is fixedly installed at the rear of the rear frame by a first vertical support rod bolt;

[0045] The first disc-type soil cover is fixedly installed at the rear of the rear frame by a second vertical support rod bolt.

[0046] According to the above technical solution, the adjustable seeding unit includes:

[0047] A duckbill seeder, wherein the duckbill seeder is movably mounted in the rear frame via a mounting bracket, and the duckbill seeder is arranged in a mirror-symmetrical manner;

[0048] A second alignment adjustment mechanism, disposed on the rear frame, is used to adjust the spacing of the duckbill seeder. The second alignment adjustment mechanism includes:

[0049] The second servo motor is fixedly installed in the rear frame. The output end of the second servo motor is fixedly installed with a bidirectional threaded rod. The two ends of the bidirectional threaded rod have opposite thread directions. The bidirectional threaded rod is threadedly connected to an external protrusion on one side of the mounting bracket.

[0050] According to the above technical solution, the integrated trenching unit includes:

[0051] A central pole, which is fixedly installed at the lower end of the central frame;

[0052] A drip irrigation tape furrow opener is fixedly installed at the lower end of the central rod via a first electric telescopic rod, and the horizontal projection of the drip irrigation tape reel is located directly above the drip irrigation tape furrow opener.

[0053] The first side wing hinge rod is hingedly installed on both sides of the central rod;

[0054] A first angle control servo motor is fixedly installed at the hinge point between the central rod and the first side wing hinge rod, and is used to control the deflection angle of the first side wing hinge rod relative to the central rod.

[0055] The seeding furrow opener is fixedly installed at the lower end of the first side wing hinge rod via a third electric telescopic rod, and the horizontal projection of the adjustable seeding unit is located directly above the seeding furrow opener.

[0056] The second side wing hinge rod is hingedly installed at the end of the first side wing hinge rod;

[0057] The second angle control servo motor is fixedly installed at the hinge point between the first side wing hinge rod and the second side wing hinge rod, and is used to control the deflection angle of the second side wing hinge rod relative to the first side wing hinge rod.

[0058] The fertilizer furrow opener is fixedly installed on the second side wing hinge rod via a fifth electric telescopic rod, and the horizontal projection of the duckbill seeder is located directly above the fertilizer furrow opener.

[0059] Both the seeding furrow opener and the fertilizer furrow opener are equipped with angle correction mechanisms above them to correct the operating angles of the seeding furrow opener and the fertilizer furrow opener.

[0060] According to the above technical solution, the angle correction mechanism includes:

[0061] An angle adjustment rod is fixedly installed on the upper end of the third electric telescopic rod or the fifth electric telescopic rod. The top of the angle adjustment rod passes through and is movably installed in the corresponding first side wing hinge rod or second side wing hinge rod, and a first transmission gear is fixedly sleeved on the top of the angle adjustment rod.

[0062] A third servo motor is fixedly installed on the upper end of the first side wing hinge rod or the second side wing hinge rod, and a second transmission gear that meshes with the first transmission gear is fixedly installed on the output end of the third servo motor.

[0063] According to the above technical solution, the integrated soil covering unit includes:

[0064] A through-guide rod is provided, which is disposed through the fixed frame, and horizontal moving blocks are symmetrically and movably mounted on the through-guide rod;

[0065] The fourth servo motor is fixedly installed in the fixed frame on one side. A drive rod is fixedly installed at the output end of the fourth servo motor. The horizontal moving block is symmetrically threaded to the drive rod, and the thread directions at both ends of the drive rod are opposite.

[0066] The second disc-shaped soil cover is fixedly installed at the lower end of the horizontal moving block, and the horizontal projection of the second disc-shaped soil cover coincides with the position of the fertilizer ditch opener.

[0067] A central fixing block is fixedly installed between the two fixing frames. A third disc-shaped soil cover is fixedly installed at the bottom of the central fixing block, and the horizontal projection of the third disc-shaped soil cover coincides with the position of the drip irrigation tape furrow opener.

[0068] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0069] (1) Integrated operation significantly reduces the number of times to enter the field and the operating cost: This device integrates a rotary tillage and soil breaking unit, an integrated ditching unit, a drip irrigation tape laying unit, an adjustable fertilization unit, an integrated soil covering unit, a mulch film covering unit, a mulch film pressing unit, and an adjustable sowing unit along the direction of travel of the frame assembly. It integrates more than ten processes such as seedbed preparation, drip irrigation tape ditching and laying, fertilization ditch and sowing ditch opening, fertilization, soil covering of drip irrigation tape ditch and fertilization ditch, mulching, mulch film pressing and soil covering, and mulch film punching and sowing into one operation. This avoids the multiple compaction of the soil caused by traditional segmented operation, significantly reduces energy consumption and labor costs, and at the same time reduces soil moisture evaporation, which is conducive to moisture retention and increased yield.

[0070] (2) The integrated ditching unit enables simultaneous opening of three ditches with flexible and adjustable row spacing: The integrated ditching unit, through the multi-level hinge structure of the central rod, the first side wing hinge rod and the second side wing hinge rod, and in conjunction with the first angle control servo motor and the second angle control servo motor fixedly installed at each hinge point, can independently control the lateral deflection angle of the seeding ditch opener and the fertilizer ditch opener. At the same time, the drip irrigation tape ditch opener achieves depth adjustment through the first electric telescopic rod, thereby realizing independent stepless adjustment of the lateral position and ditching depth of the drip irrigation tape ditch, the seeding ditch and the fertilizer ditch, adapting to the agronomic row spacing requirements of different crops (such as corn, cotton and potatoes), without the need to replace the ditching components.

[0071] (3) The fertilization unit and the sowing unit have independent electronically controlled alignment adjustment functions: the adjustable fertilization unit drives the rotating shaft through the first servo motor in the first alignment adjustment mechanism, which drives the branch rod and connecting rod to move laterally along the guide rod, so that the distance between the two fertilization heads is precisely aligned with the fertilization furrow opener; the adjustable sowing unit drives the bidirectional threaded rod through the second servo motor in the second alignment adjustment mechanism, so that the distance between the two duckbill seeders is precisely aligned with the sowing furrow opener. Both can be quickly adjusted according to the operation requirements, and the adjustment accuracy is high and the operation is convenient, avoiding the cumbersome traditional mechanical repositioning and disassembly.

[0072] (4) The integrated soil covering unit enables differentiated soil covering for fertilization furrows and drip irrigation trenches: In the integrated soil covering unit, two second disc-shaped soil covering devices fixedly installed below the horizontal moving block are driven by a fourth servo motor to adjust their horizontal spacing, so that their horizontal projection coincides with the position of the fertilization furrow opener, thus accurately covering the fertilization furrow; while the third disc-shaped soil covering device fixedly installed at the bottom of the central fixed block has its horizontal projection coincide with the position of the drip irrigation trench opener, thus covering the drip irrigation trench. This structure enables independent adjustment and synchronous execution of the two types of trench soil covering operations, ensuring both shallow burial and fixation of the drip irrigation tape and deep coverage of fertilizer, thereby improving water and fertilizer utilization efficiency.

[0073] (5) The modular layout of each functional unit facilitates maintenance and expansion: the rotary tillage and soil breaking unit, drip irrigation tape laying unit, adjustable fertilization unit, integrated soil covering unit, mulch film covering unit, mulch film pressing unit and adjustable seeding unit are arranged in sequence from front to back along the frame assembly. Each unit is relatively independent and the connection relationship is clear, which facilitates the disassembly and maintenance of individual units, replacement of worn parts or subsequent functional expansion (such as adding intelligent sensors, variable fertilization control system, etc.), reducing the overall machine maintenance cost and the threshold for use. Attached Figure Description

[0074] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0075] Figure 1 This is a first perspective view of the present invention;

[0076] Figure 2 This is a second perspective view of the present invention;

[0077] Figure 3 This is a third perspective view of the present invention;

[0078] Figure 4 This is a fourth perspective schematic diagram of the present invention;

[0079] Figure 5 This is the fifth perspective schematic diagram of the present invention;

[0080] Figure 6 This is a first partial three-dimensional schematic diagram of the present invention;

[0081] Figure 7 This is a second partial perspective view of the present invention;

[0082] Figure 8 This is a third partial perspective view of the present invention;

[0083] Figure 9 This is a fourth partial perspective view of the present invention;

[0084] Figure 10 This is a fifth partial perspective view of the present invention;

[0085] In the diagram: 1-Frame assembly, 11-Suspension connector, 12-Central transmission box, 13-Front frame, 14-Middle frame, 141-Fixed frame, 142-Gap channel, 143-Reinforcing block, 15-First hydraulic cylinder, 16-Rear frame, 2-Rotary tillage and soil-crushing unit, 21-Gear transmission mechanism, 211-Drive shaft, 212-First pulley, 213-Second pulley, 214-Belt, 22-Cover, 23-Rotary shaft, 231-Rotary blade, 3-Integrated ditching unit, 31-Central 32-Drip irrigation tape furrow opener, 321-First electric telescopic rod, 33-First side hinge rod, 331-First angle control servo motor, 34-Sowing furrow opener, 341-Third electric telescopic rod, 35-Second side hinge rod, 351-Second angle control servo motor, 36-Fertilizer furrow opener, 361-Fifth electric telescopic rod, 37-Angle correction mechanism, 371-Angle adjustment rod, 372-First transmission gear, 373-Third servo motor, 374-Second transmission gear, 4-Drip irrigation tape laying Unit, 41-Central fixed column, 42-Removable crossbeam, 43-Drip irrigation tape reel, 5-Adjustable fertilization unit, 51-Dual-chamber fertilizer bin, 511-Baffle plate, 512-Fertilizer chamber, 52-Bottom feeding pipe, 53-Fertilizer head, 54-First alignment adjustment mechanism, 541-Guide rod, 542-Connecting rod, 543-First servo motor, 544-Rotating shaft, 545-Branch rod, 6-Integrated soil covering unit, 61-Through guide rod, 62-Horizontal moving block, 63-Fourth servo motor, 64-Drive 65-Moving rod, 66-Second disc-type soil covering device, 67-Third disc-type soil covering device, 7-Mulch film covering unit, 71-Bottom support, 72-Mulch film roller, 8-Mulch film pressing unit, 81-Mulch film pressing wheel, 82-First vertical support rod, 83-First disc-type soil covering device, 84-Second vertical support rod, 9-Adjustable seeding unit, 91-Duckbill seeder, 92-Mounting frame, 921-Outer protrusion, 93-Second alignment adjustment mechanism, 931-Second servo motor, 932-Bidirectional threaded rod. Detailed Implementation

[0086] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0087] Please see Figure 1-10 The present invention provides a technical solution: a multi-functional film-mulching seeder, comprising:

[0088] The frame assembly 1 has a suspension connector 11 and a central transmission box 12 at its front end;

[0089] Along the travel direction of the frame assembly 1, the following components are sequentially integrated and installed from front to back:

[0090] Rotary tillage and soil-breaking unit 2 is located below the front end of the frame assembly 1 and is connected to the central transmission box 12 through a gear transmission mechanism 21. It is used to break up the soil and form a seedbed.

[0091] An integrated ditching unit 3 is located behind the rotary tillage and soil-breaking unit 2 and is used to simultaneously open drip irrigation trenches, sowing trenches, and fertilization trenches on the seedbed.

[0092] The drip irrigation tape laying unit 4 is located above and behind the rotary tillage and soil breaking unit 2, and is used to lay the drip irrigation tape in the drip irrigation tape trench opened by the integrated trenching unit 3.

[0093] An adjustable fertilization unit 5 is located behind the rotary tillage and soil-breaking unit 2 and is used to apply fertilizer into the fertilization trench opened by the integrated trenching unit 3.

[0094] An integrated soil covering unit 6 is located behind the adjustable fertilization unit 5 and is used to cover the drip irrigation tape trench and fertilization trench with soil after the tape has been laid and fertilized.

[0095] The mulch film covering unit 7 is located behind the integrated soil covering unit 6 and is used to lay mulch film on the ground surface after soil covering.

[0096] The mulch film compaction unit 8 is located behind the mulch film covering unit 7 and is used to compact the mulch film and cover it with soil.

[0097] An adjustable seeding unit 9 is located behind the mulch film pressing unit 8 and is used to make holes in the mulch film for seeding. The horizontal projection of the adjustable seeding unit 9 is located between the drip irrigation tape laying unit 4 and the adjustable fertilization unit 5, so that the seeding row, drip irrigation tape row, and fertilization row maintain a predetermined relative position in the lateral direction.

[0098] The integrated trenching unit 3 simultaneously opens three types of trenches and is spatially and functionally coupled with the subsequent processes of laying strips, fertilizing, covering soil, covering film, compacting, and sowing, forming an integrated operation chain that completes seedbed preparation, drip irrigation tape laying, fertilizing, covering soil, covering film, compacting film, and precision sowing in one operation.

[0099] Specifically, the rack assembly 1 includes:

[0100] The front end of the front frame 13 is connected to the traction equipment via the suspension connector 11;

[0101] A central rack 14 is hinged to the rear end of the front rack 13. The central rack 14 consists of two mirror-symmetrical fixed frames 141 and a reinforcing block 143 fixedly installed between the fixed frames 141. A gap channel 142 is left between the two fixed frames 141.

[0102] The first hydraulic cylinder 15 is mirror-symmetrically arranged between the front frame 13 and the middle frame 14. The cylinder body of the first hydraulic cylinder 15 is movably mounted on the top of the front frame 13, and the telescopic end of the first hydraulic cylinder 15 is movably connected to the top of the middle frame 14.

[0103] The rear rack 16 is located at the rear end of the middle rack 14;

[0104] Specifically, the rotary tillage and soil-breaking unit 2 includes:

[0105] The cover 22 is fixedly installed to the lower end of the front frame 13 by bolts;

[0106] Rotary tillage shaft 23, which is movably installed inside the cover 22, and rotary tillage blades 231 are evenly distributed along the axial direction of the rotary tillage shaft 23;

[0107] The gear transmission mechanism 21 includes:

[0108] A drive shaft 211 is rotatably mounted on the upper end of the front frame 13 via a bearing seat. One end of the drive shaft 211 is connected to the central transmission box 12, and the other end of the drive shaft 211 is fixedly mounted with a first pulley 212.

[0109] The second pulley 213 is fixedly installed on one end of the rotary tiller 23 that protrudes from the cover 22, and the second pulley 213 is connected to the first pulley 212 by a belt 214.

[0110] Specifically, the drip irrigation tape laying unit 4 includes:

[0111] A central fixing column 41 is arranged in a mirror image symmetrically above the rear end of the front frame 13;

[0112] A detachable crossbeam 42 is detachably mounted between the bifurcations at the top of the central fixed column 41;

[0113] The drip irrigation tape reel 43 is located in the middle of the detachable crossbeam 42. Movable sleeves 44 are provided on both sides of the drip irrigation tape reel 43, and the movable sleeves 44 are movably sleeved on the detachable crossbeam 42.

[0114] The drip irrigation tape is delivered downstream via the gap channel 142 between the two fixed frames 141;

[0115] Specifically, the adjustable fertilization unit 5 includes:

[0116] The dual-chamber fertilizer bin 51 is fixedly installed on the upper end of the central frame 14. The interior of the dual-chamber fertilizer bin 51 is divided into two symmetrical fertilizer chambers 512 by a partition 511. Each fertilizer chamber 512 is provided with an independent bottom feeding pipe 52 at its bottom. The end of the bottom feeding pipe 52 is provided with a fertilizer applicator 53. The fertilizer applicator 53 is adjusted laterally by a first alignment adjustment mechanism 54.

[0117] The first alignment adjustment mechanism 54 includes:

[0118] Guide rod 541, which is mirror-symmetrically arranged between the two fixed frames 141;

[0119] A connecting rod 542, one end of which is fixedly connected to the fertilizer head 53, and the other end of which is movably sleeved on the guide rod 541;

[0120] A first servo motor 543 is fixedly installed at the lower end of the fixed frame 141 on one side. A rotating shaft 544 is fixedly installed at the output end of the first servo motor 543. The rotating shaft 544 passes through and is movably installed in the fixed frame 141 on the other side. The threads on both sides of the rotating shaft 544 are in opposite directions. A branch rod 545 is fixedly provided on the side wall of the guide rod 541. The branch rod 545 is threadedly connected to the rotating shaft 544.

[0121] Specifically, the mulch film covering unit 7 includes:

[0122] Bottom bracket 71, which is fixedly installed at the lower end of the rear frame 16;

[0123] A plastic film roller 72 is movably mounted between the bottom supports 71.

[0124] The plastic film compaction unit 8 includes:

[0125] The plastic film pressing wheel 81 is fixedly installed at the rear of the rear frame 16 by bolts to the first vertical support rod 82;

[0126] The first disc-shaped soil cover 83 is fixedly installed at the rear of the rear frame 16 by bolts through the second vertical support rod 84.

[0127] Specifically, the adjustable seeding unit 9 includes:

[0128] The duckbill seeder 91 is movably mounted in the rear frame 16 via a mounting bracket 92, and the duckbill seeder 91 is arranged in a mirror-symmetrical manner.

[0129] A second alignment adjustment mechanism 93 is disposed on the rear frame 16 and is used to adjust the spacing of the duckbill seeders 91. The second alignment adjustment mechanism 93 includes:

[0130] The second servo motor 931 is fixedly installed in the rear frame 16. The output end of the second servo motor 931 is fixedly installed with a bidirectional threaded rod 932. The two ends of the bidirectional threaded rod 932 have opposite thread directions. The bidirectional threaded rod 932 is threadedly connected to the outer protrusion 921 on one side of the mounting bracket 92.

[0131] Specifically, the integrated trenching unit 3 includes:

[0132] Central rod 31, which is fixedly installed at the lower end of the central frame 14;

[0133] The drip irrigation tape furrow opener 32 is fixedly installed at the lower end of the central rod 31 via a first electric telescopic rod 321, and the horizontal projection of the drip irrigation tape reel 43 is located directly above the drip irrigation tape furrow opener 32.

[0134] The first side wing hinge rod 33 is hingedly installed on both sides of the central rod 31;

[0135] The first angle control servo motor 331 is fixedly installed at the hinge point between the central rod 31 and the first side wing hinge rod 33, and is used to control the deflection angle of the first side wing hinge rod 33 relative to the central rod 31.

[0136] The seeding furrow opener 34 is fixedly installed at the lower end of the first side wing hinge rod 33 via a third electric telescopic rod 341, and the horizontal projection of the adjustable seeding unit 9 is located directly above the seeding furrow opener 34.

[0137] The second side wing hinge rod 35 is hingedly mounted to the end of the first side wing hinge rod 33;

[0138] The second angle control servo motor 351 is fixedly installed at the hinge point between the first side wing hinge rod 33 and the second side wing hinge rod 35, and is used to control the deflection angle of the second side wing hinge rod 35 relative to the first side wing hinge rod 33.

[0139] Fertilizer furrow opener 36, which is fixedly installed on the second side wing hinge rod 35 via the fifth electric telescopic rod 361, and the horizontal projection of the duckbill seeder 91 is located directly above the fertilizer furrow opener 36.

[0140] An angle correction mechanism 37 is provided above both the seeding furrow opener 34 and the fertilizer furrow opener 36 to correct the working angles of the seeding furrow opener 34 and the fertilizer furrow opener 36.

[0141] Specifically, the angle correction mechanism 37 includes:

[0142] An angle adjustment rod 371 is fixedly installed on the upper end of the third electric telescopic rod 341 or the fifth electric telescopic rod 361. The top of the angle adjustment rod 371 passes through and is movably installed in the corresponding first side wing hinge rod 33 or second side wing hinge rod 35, and the top of the angle adjustment rod 371 is fixedly sleeved with a first transmission gear 372.

[0143] The third servo motor 373 is fixedly installed on the upper end of the first side wing hinge rod 33 or the second side wing hinge rod 35, and the output end of the third servo motor 373 is fixedly installed with a second transmission gear 374 that meshes with the first transmission gear 372.

[0144] Specifically, the integrated soil covering unit 6 includes:

[0145] A through guide rod 61 is provided, which is disposed through the fixed frame 141, and horizontal moving blocks 62 are symmetrically and movably installed on the through guide rod 61;

[0146] The fourth servo motor 63 is fixedly installed in the fixed frame 141 on one side. The output end of the fourth servo motor 63 is fixedly installed with a drive rod 64. The horizontal moving block 62 is symmetrically threaded to the drive rod 64, and the thread directions at both ends of the drive rod 64 are opposite.

[0147] The second disc-shaped soil covering device 65 is fixedly installed at the lower end of the horizontal moving block 62, and the horizontal projection of the second disc-shaped soil covering device 65 coincides with the position of the fertilizer ditch opener 36.

[0148] A central fixing block 66 is fixedly installed between the two fixing frames 141. A third disc-shaped soil cover 67 is fixedly installed at the bottom of the central fixing block 66, and the horizontal projection of the third disc-shaped soil cover 67 coincides with the position of the drip irrigation tape furrow opener 32.

[0149] The specific operating procedure for this device is as follows:

[0150] I. Pre-operation preparation and equipment adjustment

[0151] Implement attachment: Connect the traction equipment (such as a tractor) to the suspension connector 11 at the front end of the frame assembly 1. The central transmission box 12 is connected to the power output shaft of the tractor through a universal drive shaft.

[0152] Operation parameter settings:

[0153] The lateral spacing between the two fertilizer heads 53 in the adjustable fertilizer unit 5 is adjusted by the first alignment adjustment mechanism 54.

[0154] The lateral spacing between the two duckbill seeders 91 in the adjustable seeding unit 9 is adjusted by the second alignment adjustment mechanism 93.

[0155] By integrating the first angle control servo motor 331 and the second angle control servo motor 351 in the furrowing unit 3, the deflection angles of the first side wing hinge rod 33 and the second side wing hinge rod 35 are set respectively, thereby determining the lateral positions of the seeding furrow opener 34 and the fertilizer furrow opener 36.

[0156] The vertical operating angles of the seeding furrow opener 34 and the fertilizer furrow opener 36 are finely adjusted by the third servo motor 373 in the angle correction mechanism 37.

[0157] By using the fourth servo motor 63 in the integrated soil covering unit 6, the lateral spacing of the two second disc-shaped soil covering devices 65 is adjusted so that they coincide with the position of the fertilizer trencher 36.

[0158] Material loading:

[0159] The drip irrigation tape reel 43 is installed on the detachable crossbeam 42 of the drip irrigation tape laying unit 4, and the end of the drip irrigation tape is led out and passes through the gap channel 142 between the two fixed frames 141, and fixed behind the drip irrigation tape furrow opener 32.

[0160] Add the required fertilizer to the two fertilizer chambers 512 of the dual-chamber fertilizer bin 51 of the adjustable fertilization unit 5.

[0161] Install the mulch film roller 72 between the bottom supports 71 of the mulch film covering unit 7, and pull out the end of the mulch film and pass under the mulch film pressing wheel 81 of the mulch film pressing unit 8 (the starting end is manually fixed).

[0162] II. Work Flow (to be executed sequentially from front to back)

[0163] Step 1: Rotary tillage breaks up the soil to form a seedbed

[0164] The tractor's power is transmitted to the rotary tiller shaft 23 via the central transmission box 12, drive shaft 211, first pulley 212, belt 214, and second pulley 213. The rotary tiller shaft 23 drives the evenly distributed rotary blades 231 to rotate at high speed, cutting, breaking, and mixing the surface soil to form a flat, finely broken seedbed. The cover 22 prevents soil clods from splashing and guides the broken soil to the rear.

[0165] Step 2: Simultaneous furrowing (drip irrigation furrow, seeding furrow, fertilization furrow)

[0166] Integrated trenching unit 3 simultaneously creates three types of trenches on the seedbed after rotary tillage:

[0167] Drip irrigation tape furrow opener 32: Fixedly installed below the central rod 31, the furrow opening depth is controlled by the first electric telescopic rod 321 to open drip irrigation tape furrows.

[0168] Seeding furrow opener 34: Installed at the lower end of the first side wing hinge rod 33, and its depth is controlled by the third electric telescopic rod 341. The first angle control servo motor 331 has been preset to deflect the first side wing hinge rod 33, so that the seeding furrow opener 34 is located in a predetermined lateral position to open the seeding furrow.

[0169] Fertilizer furrow opener 36: Installed at the lower end of the second side wing hinge rod 35, and its depth is controlled by the fifth electric telescopic rod 361. The second angle control servo motor 351 presets the deflection angle of the second side wing hinge rod 35, so that the fertilizer furrow opener 36 is located in a predetermined lateral position to open the fertilizer furrow.

[0170] The third servo motor 373 in the angle correction mechanism 37 drives the angle adjustment rod 371 to rotate through the first transmission gear 372 and the second transmission gear 374, so as to accurately correct the soil entry angle of the sowing furrow opener 34 and the fertilizer furrow opener 36, and ensure that the furrow walls are neat.

[0171] Step 3: Laying Drip Irrigation Tape

[0172] Drip tape laying unit 4: The drip tape reel 43 rotates during operation to release the drip tape. The drip tape is conveyed downwards through the gap channel 142 between the two fixed frames 141 and falls into the drip tape trench opened by the integrated trenching unit 3. The movable sleeve 44 can slide on the detachable crossbeam 42 to center or adjust the lateral position of the drip tape reel 43. It can be connected by screwing to loosen or tighten, which is a common technical means in this field.

[0173] Step 4: Fertilizing

[0174] Adjustable fertilization unit 5: Fertilizer in the dual-chamber fertilizer bin 51 is conveyed to the fertilization head 53 via the bottom feeding pipe 52. The fertilization head 53 applies the fertilizer into the fertilization furrow opened by the integrated furrowing unit 3. The first alignment adjustment mechanism 54 drives the rotating shaft 544 to rotate via the first servo motor 543, which drives the branch rod 545 and the connecting rod 542 to move laterally along the guide rod 541, thereby precisely adjusting the distance between the two fertilization heads 53 so that they are aligned with the fertilization furrow opener 36.

[0175] Step 5: Cover the drip irrigation trenches and fertilizer trenches with soil.

[0176] Integrated soil covering unit 6:

[0177] For the fertilization trench: two second disc-shaped soil covering devices 65 are fixed to the lower end of the horizontal moving block 62. The horizontal moving block 62 moves symmetrically on the drive rod 64 driven by the fourth servo motor 63 (with opposite threads at both ends), so that the horizontal projection of the second disc-shaped soil covering device 65 coincides with the position of the fertilization trench opener 36, pushing the soil into the fertilization trench to cover the fertilizer.

[0178] For drip irrigation tape trenches: The third disc-shaped soil coverer 67, which is fixedly installed at the bottom of the central fixing block 66, has its horizontal projection coinciding with the position of the drip irrigation tape trench opener 32, pushing the soil into the drip irrigation tape trench to cover the drip irrigation tape.

[0179] Step 6: Laying the mulch film

[0180] Mulch film covering unit 7: Mulch film roller 72 releases mulch film, which is laid flat on the soil surface that has been covered with soil, covering the drip irrigation trench, fertilization trench and sowing trench areas.

[0181] Step 7: Compacting the plastic film and covering the edges with soil

[0182] The mulch film compaction unit 8: A mulch film compaction wheel 81 is installed behind the rear frame 16 via a first vertical support rod 82 to compact the newly laid mulch film, ensuring a tight fit between the mulch film and the soil and preventing it from being blown away by the wind. A disc-type soil covering device 83 is installed behind the rear frame 16 via a second vertical support rod 84 to cover the soil on both sides of the mulch film and fix it in place. The tops of both the first vertical support rod 82 and the second vertical support rod 84 are connected by bolts for easy disassembly.

[0183] Step 8: Drill holes and sow seeds

[0184] Adjustable seeding unit 9: The duckbill seeder 91 is movably mounted in the rear frame 16 via the mounting bracket 92. The second servo motor 931 in the second alignment adjustment mechanism 93 drives the bidirectional threaded rod 932 to rotate. The threads at both ends of the bidirectional threaded rod 932 are opposite in direction, causing the outer protrusions 921 of the two mounting brackets 92 to move towards or away from each other, thereby adjusting the distance between the two duckbill seeders 91. The duckbill seeder 91 punches holes in the mulch film after it has been pressed and sows the seeds into the sowing furrows (the sowing furrows are opened by the preceding sowing furrow opener 34). Since the horizontal projection of the adjustable seeding unit 9 is located between the drip irrigation tape laying unit 4 and the adjustable fertilization unit 5, the sowing row, drip irrigation tape row, and fertilization row maintain a predetermined relative position in the lateral direction, realizing precise planting with integrated water and fertilizer.

[0185] III. Assignment Completion and Follow-up

[0186] All processes are completed simultaneously in one stroke: rotary tillage and soil breaking, simultaneous digging of three furrows, laying of drip irrigation tape, fertilization, covering with soil (drip irrigation tape furrow + fertilization furrow), laying of mulch film, compacting the mulch film and covering the edges with soil, and punching holes for sowing. The three-section structure of the frame assembly 1 (front frame 13, middle frame 14, and rear frame 16) adapts to ground undulations through the first hydraulic cylinder 15 to ensure consistent working depth. The rear frame 16 can be installed as a fixed connection or hinged at an appropriate angle, and can be used as an optional structure. After the operation is completed, clean up the residual materials in each unit, disassemble the drip irrigation tape reel 43 and the mulch film roller 72, and perform maintenance.

[0187] It should be noted that the following technical means are conventional applications in the prior art and are not the innovation of this invention; therefore, they will not be described in detail in this specification:

[0188] Integrated trenching unit 3 and integrated soil covering unit 6: These can be integrated with position sensors (such as ultrasonic sensors, laser sensors, or encoders) according to actual needs. These sensors are used to detect trenching depth, soil covering thickness, and lateral alignment of each actuator in real time, enabling automatic adjustment in conjunction with the controller. This type of sensing and control technology is widely used in modern agricultural machinery.

[0189] Adjustable fertilization unit 5: A flow rate sensor (such as a Hall effect flow sensor or a weighing sensor) can be integrated into the bottom feed pipe 52 or the fertilization head 53 to monitor the instantaneous fertilization rate and link it with the traveling speed of the traction equipment to achieve variable fertilization through the electronic control system. This technology is a standard configuration for existing precision fertilizers.

[0190] Frame Assembly 1: This assembly can integrate a camera device (such as an industrial camera or infrared camera) and install it at an appropriate location on the front frame 13, middle frame 14, or rear frame 16. It is used to collect real-time images of the operation (such as seedbed status, mulch film laying quality, sowing effect, etc.) and to perform operation quality tracking and anomaly alarms through image processing algorithms. This technology has become a common auxiliary means for intelligent agricultural equipment.

[0191] The aforementioned existing technologies can be selected and installed according to actual operational needs. Their specific implementation methods (sensor selection, control algorithms, communication protocols, etc.) can be obtained by those skilled in the art from conventional design manuals and do not need to be elaborated upon in this patent. The scope of protection of this invention is still determined by the structural features described in the claims and is not limited by whether or not the aforementioned auxiliary sensing device is integrated.

[0192] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0193] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional film-mulching seeder, characterized in that, include: The frame assembly (1) is provided with a suspension connector (11) and a central transmission box (12) at its front end. Along the travel direction of the frame assembly (1), the following components are sequentially integrated and installed from front to back: The rotary tillage and soil-breaking unit (2) is located below the front end of the frame assembly (1) and is connected to the central transmission box (12) through a gear transmission mechanism (21). It is used to break up the soil and form a seed bed. An integrated ditching unit (3) is set behind the rotary tillage and soil-breaking unit (2) for simultaneously opening drip irrigation trenches, sowing trenches and fertilization trenches on the seedbed; The drip irrigation tape laying unit (4) is located above and behind the rotary tillage and soil breaking unit (2) and is used to lay the drip irrigation tape in the drip irrigation tape trench opened by the integrated trenching unit (3). An adjustable fertilization unit (5) is set behind the rotary tillage and soil breaking unit (2) and is used to apply fertilizer into the fertilization ditch opened by the integrated ditching unit (3). An integrated soil covering unit (6) is set behind the adjustable fertilization unit (5) and is used to cover the drip irrigation trench and fertilization trench that have been laid and fertilized with soil. The mulch film covering unit (7) is located behind the integrated soil covering unit (6) and is used to lay mulch film on the ground surface after soil covering; The mulch film compaction unit (8) is located behind the mulch film covering unit (7) and is used to compact the mulch film and cover it with soil. An adjustable seeding unit (9) is set behind the mulch film pressing unit (8) for making holes in the mulch film for seeding. The horizontal projection of the adjustable seeding unit (9) is located between the drip irrigation tape laying unit (4) and the adjustable fertilization unit (5), so that the seeding row, drip irrigation tape row, and fertilization row maintain a predetermined relative position in the lateral direction. The integrated trenching unit (3) simultaneously opens three types of trenches and is spatially and functionally coupled with the subsequent processes of laying strips, fertilizing, covering soil, covering film, compacting, and sowing, forming an integrated operation chain that completes seedbed preparation, drip irrigation tape laying, fertilizing, covering soil, covering film, compacting film and precision sowing in one operation.

2. The multifunctional film-mulching seeder according to claim 1, characterized in that, The rack assembly (1) includes: A front frame (13) is connected to a traction device via a suspension connector (11) at its front end. A central rack (14) is hinged to the rear end of the front rack (13). The central rack (14) consists of two mirror-symmetrical fixed frames (141) and a reinforcing block (143) fixedly installed between the fixed frames (141). A gap channel (142) is left between the two fixed frames (141). The first hydraulic cylinder (15) is mirror-symmetrically arranged between the front frame (13) and the middle frame (14). The cylinder body of the first hydraulic cylinder (15) is movably installed on the top of the front frame (13), and the telescopic end of the first hydraulic cylinder (15) is movably connected to the top of the middle frame (14). The rear rack (16) is located at the rear end of the middle rack (14).

3. The multifunctional film-mulching seeder according to claim 2, characterized in that, The rotary tillage and soil breaking unit (2) includes: The cover (22) is fixedly installed at the lower end of the front frame (13) by bolts; Rotary tillage shaft (23), which is movably installed inside the cover (22), and rotary tillage blades (231) are evenly distributed along the axial direction of the rotary tillage shaft (23). The gear transmission mechanism (21) includes: A drive shaft (211) is rotatably mounted on the upper end of the front frame (13) via a bearing seat. One end of the drive shaft (211) is connected to the central transmission box (12), and the other end of the drive shaft (211) is fixedly mounted with a first pulley (212). The second pulley (213) is fixedly installed on one end of the rotary tiller (23) that protrudes from the cover (22). The second pulley (213) and the first pulley (212) are connected by a belt (214).

4. A multifunctional film-mulching seeder according to claim 3, characterized in that, The drip irrigation tape laying unit (4) includes: A central fixing column (41) is arranged in a mirror image symmetrically above the rear end of the front frame (13); A detachable crossbeam (42) is detachably mounted between the bifurcations at the top of the central fixed column (41); A drip irrigation tape reel (43) is located in the middle of the detachable crossbeam (42). Movable sleeves (44) are provided on both sides of the drip irrigation tape reel (43), and the movable sleeves (44) are movably sleeved on the detachable crossbeam (42). The drip irrigation tape is delivered downstream via the gap channel (142) between the two fixed frames (141).

5. A multifunctional film-mulching seeder according to claim 4, characterized in that, The adjustable fertilization unit (5) includes: A dual-cavity fertilizer bin (51) is fixedly installed on the upper end of the central frame (14). The interior of the dual-cavity fertilizer bin (51) is divided into two symmetrical fertilizer cavities (512) by a partition (511). Each fertilizer cavity (512) is provided with an independent bottom feeding pipe (52) at its bottom. The end of the bottom feeding pipe (52) is provided with a fertilizer applicator (53). The fertilizer applicator (53) is adjusted laterally by a first alignment adjustment mechanism (54). The first alignment adjustment mechanism (54) includes: Guide rod (541), which is mirror-symmetrically arranged between the two fixed frames (141); A connecting rod (542) is provided, one end of which is fixedly connected to the fertilizer head (53), and the other end of which is movably sleeved on the guide rod (541). The first servo motor (543) is fixedly installed at the lower end of the fixed frame (141) on one side. The output end of the first servo motor (543) is fixedly installed with a rotating shaft (544). The rotating shaft (544) passes through and is movably installed in the fixed frame (141) on the other side. The threads on both sides of the rotating shaft (544) are opposite. A branch rod (545) is fixedly provided on the side wall of the guide rod (541). The branch rod (545) is threadedly connected to the rotating shaft (544).

6. A multifunctional film-mulching seeder according to claim 5, characterized in that, The mulch film covering unit (7) includes: Bottom bracket (71), the bottom bracket (71) is fixedly installed at the lower end of the rear frame (16); A plastic film roller (72) is movably mounted between the bottom supports (71); The plastic film compaction unit (8) includes: The plastic film pressing wheel (81) is fixedly installed at the rear of the rear frame (16) by bolts to the first vertical support rod (82); The first disc-shaped soil cover (83) is fixedly installed at the rear of the rear frame (16) by bolts of the second vertical support rod (84).

7. A multifunctional film-mulching seeder according to claim 6, characterized in that, The adjustable seeding unit (9) includes: The duckbill planter (91) is movably installed in the rear frame (16) via the mounting bracket (92), and the duckbill planter (91) is arranged in a mirror symmetrical manner. A second alignment adjustment mechanism (93) is disposed on the rear frame (16) and is used to adjust the spacing of the duckbill seeder (91). The second alignment adjustment mechanism (93) includes: The second servo motor (931) is fixedly installed in the rear frame (16). The output end of the second servo motor (931) is fixedly installed with a bidirectional threaded rod (932). The two ends of the bidirectional threaded rod (932) have opposite thread directions. The bidirectional threaded rod (932) is threadedly connected to the outer protrusion (921) on one side of the mounting bracket (92).

8. A multifunctional film-mulching seeder according to claim 7, characterized in that, The integrated trenching unit (3) includes: A central rod (31) is fixedly installed at the lower end of the central frame (14); The drip irrigation tape furrow opener (32) is fixedly installed at the lower end of the central rod (31) by the first electric telescopic rod (321), and the horizontal projection of the drip irrigation tape disc (43) is located directly above the drip irrigation tape furrow opener (32). The first side wing hinge rod (33) is hinged to both sides of the central rod (31); The first angle control servo motor (331) is fixedly installed at the hinge point between the central rod (31) and the first side wing hinge rod (33) to control the deflection angle of the first side wing hinge rod (33) relative to the central rod (31). The seeding furrow opener (34) is fixedly installed at the lower end of the first side wing hinge rod (33) via a third electric telescopic rod (341), and the horizontal projection of the adjustable seeding unit (9) is located directly above the seeding furrow opener (34). The second side wing hinge rod (35) is hinged to the end of the first side wing hinge rod (33); The second angle control servo motor (351) is fixedly installed at the hinge point between the first side wing hinge rod (33) and the second side wing hinge rod (35) to control the deflection angle of the second side wing hinge rod (35) relative to the first side wing hinge rod (33). Fertilizer furrow opener (36), the fertilizer furrow opener (36) is fixedly installed on the second side wing hinge rod (35) by the fifth electric telescopic rod (361), and the horizontal projection of the duckbill seeder (91) is located directly above the fertilizer furrow opener (36); An angle correction mechanism (37) is provided above both the seeding furrow opener (34) and the fertilizer furrow opener (36) to correct the working angle of the seeding furrow opener (34) and the fertilizer furrow opener (36).

9. A multifunctional film-mulching seeder according to claim 8, characterized in that, The angle correction mechanism (37) includes: An angle adjustment rod (371) is fixedly installed on the upper end of the third electric telescopic rod (341) or the fifth electric telescopic rod (361). The top of the angle adjustment rod (371) passes through and is movably installed in the corresponding first side wing hinge rod (33) or second side wing hinge rod (35). The top of the angle adjustment rod (371) is fixedly sleeved with a first transmission gear (372). The third servo motor (373) is fixedly installed on the upper end of the first side wing hinge rod (33) or the second side wing hinge rod (35), and the output end of the third servo motor (373) is fixedly installed with a second transmission gear (374) that meshes with the first transmission gear (372).

10. A multifunctional film-mulching seeder according to claim 9, characterized in that, The integrated soil covering unit (6) includes: A through guide rod (61) is provided through the fixed frame (141), and horizontal moving blocks (62) are symmetrically and movably installed on the through guide rod (61). The fourth servo motor (63) is fixedly installed in the fixed frame (141) on one side. The output end of the fourth servo motor (63) is fixedly installed with a drive rod (64). The horizontal moving block (62) is symmetrically threaded to the drive rod (64), and the thread directions at both ends of the drive rod (64) are opposite. The second disc-shaped soil cover (65) is fixedly installed at the lower end of the horizontal moving block (62), and the horizontal projection of the second disc-shaped soil cover (65) coincides with the position of the fertilizer ditch opener (36). A central fixing block (66) is fixedly installed between the two fixing frames (141). A third disc-shaped soil cover (67) is fixedly installed at the bottom of the central fixing block (66), and the horizontal projection of the third disc-shaped soil cover (67) coincides with the position of the drip irrigation tape furrow opener (32).

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