No-tillage finger-clamping type precision fertilizing and seeding machine and control method thereof

Abstract

The invention discloses a no-tillage finger-clamping type precision fertilizing and seeding machine and an intelligent control method thereof, and belongs to the technical field of agricultural machinery. The seeder comprises a rack, a traction mechanism, a fertilizing mechanism, a seeding mechanism, a land wheel and a transmission mechanism, the system is characterized by further comprising an intelligent monitoring system and a variable mouth fertilizer applying system, the fertilizing mechanism adopts a lateral deep fertilizing mode; the seeding mechanism adopts a finger clamping type seed sowing device and is connected through a parallel four-connecting-rod profiling mechanism; a V-shaped hollow rubber wheel type compacting machine and a straw cleaning mechanism composed of a weed pulling wheel and a stubble removing disc are further arranged. Through cooperation of a mechanical structure and intelligent control, the problem of blockage under high straw coverage is effectively solved, single-grain precise seeding and precise variable fertilization under high-speed operation are achieved, and the intelligent precise seeding and fertilization device has the advantages of being high in seeding and fertilization precision, intelligent in monitoring, high in adaptability and reliable in operation quality; and the device is particularly suitable for no-tillage seeding operation of a corn straw full-coverage land.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a no-till seeding machine suitable for conservation tillage, specifically a no-till finger-clamp precision fertilization seeder and its control method that integrates multiple functions such as side-deep fertilization, seedbed cleaning, precision seeding, soil covering and compaction. Background Technology

[0002] Conservation tillage technology is widely promoted and applied because it effectively reduces soil erosion by wind and water, conserves water and moisture, and increases soil organic matter content. This technology requires direct sowing on surfaces covered with a large amount of straw, thus placing extremely high demands on the sowing machinery's anti-clogging capabilities, soil penetration performance, seedbed preparation capabilities, and sowing and fertilization precision. No-till fertilization seeders, as the core equipment for realizing conservation tillage, directly affect seedling emergence quality and crop yield.

[0003] Currently, most no-till planters available both domestically and internationally employ disc furrow openers to break up stubble and create furrows, utilizing various types of seed and fertilizer metering devices. However, in practical applications, especially in areas with full corn stalk coverage such as Northeast and North China, existing technologies still face numerous limitations. First, stalk clogging is a frequent problem; traditional stalk clearing devices struggle to thoroughly clear stalks from the seedbed at high speeds, leading to unstable sowing quality. Second, seed metering accuracy is insufficient; commonly used seed metering devices experience increased rates of double-seeding and missed-seeding at high speeds, making true single-seed precision sowing difficult and affecting seedling uniformity. Third, fertilization methods need optimization; some models still suffer from seed and fertilizer burning issues due to insufficient spacing or co-location, while the depth and lateral distance of side-deep fertilization are difficult to adjust, affecting fertilizer efficiency. Furthermore, the overall level of machine intelligence is low, lacking effective monitoring and feedback of the sowing process, and unable to provide real-time alarms and statistical data, thus failing to meet the needs of precision agriculture.

[0004] Comprehensive analysis shows that existing no-till planters still have significant shortcomings in areas such as maneuverability under high straw mulch conditions, precision in sowing and fertilization, intelligent monitoring of the operation process, and reliability of key components. Therefore, there is an urgent need to develop a new type of no-till planter that integrates mechanical design, intelligent control, and agronomic requirements to fundamentally solve the clogging problem, achieve precision sowing and fertilization at high speeds, and possess real-time monitoring and alarm functions to meet the urgent needs of modern conservation tillage for efficient, precise, and reliable sowing operations.

[0005] It should be noted that the information disclosed in this background section is intended only to enhance the understanding of the overall background of the present invention, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to overcome the aforementioned shortcomings of the prior art and provide a no-till finger-clamp precision fertilizer seeder. This invention aims to solve problems such as easy clogging when operating on fields with high-intensity straw mulch, low seeding and fertilization accuracy, low level of intelligence, and insufficient reliability of key components. Specifically, the objectives of this invention include:

[0007] 1. Provide a seeder with strong anti-clogging ability and the ability to thoroughly clean up straw in the seedbed, ensuring passability on the surface of the entire straw-covered area.

[0008] 2. A seeder is provided that can achieve single-seed precision sowing and precise side-deep fertilization at high speed, thereby improving the uniformity and accuracy of sowing and fertilization and avoiding seed and seedling burn.

[0009] 3. A seeder integrating an intelligent monitoring and alarm system is provided, which can monitor the operation status in real time, automatically apply variable fertilizer, and promptly alarm when a fault occurs, thereby improving the intelligence level and reliability of the operation.

[0010] 4. Provide a seeder with a reasonable structure, convenient adjustment, good contouring effect, and suitable compaction to adapt to different soil and agronomic requirements.

[0011] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0012] A no-till finger-clamp precision fertilizer seeder includes a frame, a traction beam, a fertilization mechanism, a seeding mechanism, ground wheels, and a transmission mechanism. Its improvement lies in that the seeder also includes an intelligent monitoring system and a variable-rate fertilization system.

[0013] The intelligent monitoring system includes a seed monitor host, seed tube sensors installed on the seed guide tubes of each seed metering device, and an alarm horn. The seed tube sensors are used to detect seed falling signals in real time and transmit the signals to the seed monitor host. The seed monitor host is preset with parameters such as seed spacing and row spacing, and can calculate and display data such as the number of seeds sown, missed sowing rate, and reseeding rate in real time based on the received signals. When a fault is detected (such as blockage or missed sowing), it controls the alarm horn to emit an audible and visual alarm.

[0014] The variable fertilizer application system includes a fertilizer box, a drive motor, an electronic controller, and a Hall effect speed sensor. The Hall effect speed sensor is used to detect the operating speed of the seeder in real time; the electronic controller receives the speed signal and adjusts the speed of the motor driving the fertilizer box accordingly, thereby realizing automatic variable control of the fertilizer application rate and ensuring the stability of the fertilizer application rate per unit area.

[0015] The fertilization mechanism adopts a side-deep fertilization method. Its fertilization furrow opener is a notched disc. The fertilization position is 7-12 cm to the side of the seed and 5-8 cm below the seed, which effectively avoids the seedling burn problem caused by mixed application of seeds and fertilizer.

[0016] The sowing mechanism employs a finger-clamp seed metering device, which is connected to the frame via a parallel four-bar linkage to ensure uniform sowing depth. The finger-clamp seed metering device features an adjustable seed cleaning brush and a clutch mechanism, allowing for precise control of sowing accuracy and facilitating individual maintenance.

[0017] Furthermore, the seeder is also equipped with a V-shaped hollow rubber wheel soil compactor, the compaction intensity of which can be adjusted by a multi-stage adjustment mechanism to adapt to different soil moisture conditions.

[0018] Furthermore, the seeder is also equipped with a seedbed straw cleaning mechanism, which consists of a weeding wheel and a soil loosening and stubble removal disc, which can effectively separate the straw and weeds on the seedbed to both sides to form a clean seedbed.

[0019] Furthermore, the transmission mechanism adopts a dual transmission structure, including left and right transmission rubber wheel components and transmission component assembly. The left and right transmission rubber wheel components are symmetrically arranged on both sides of the transmission component assembly, making the transmission smoother and more reliable.

[0020] Compared with existing technologies, the no-till finger-clamp precision fertilizer seeder provided by this invention has the following significant advantages:

[0021] 1. Strong anti-clogging ability and excellent passability: Through the optimized design of the seedbed straw cleaning mechanism (combination of weeding wheel and stubble removal disc) and the high-speed rotating notched disc furrow opener, it can effectively cut and clean straw, and operate without clogging on plots covered with corn straw, completely solving the clogging problem under high-intensity straw coverage.

[0022] 2. High precision in sowing and fertilization, resulting in excellent operational quality: The use of a finger-clamp precision seed metering device, combined with an adjustable brush, ensures precise sowing of single seeds, with a single seed rate of ≥96%, no broken seeds, and a high rate of qualified plant spacing. The side-deep fertilization technology precisely applies fertilizer to the optimal position below and to the side of the seed, improving fertilizer utilization and completely avoiding the risk of burning seeds and seedlings.

[0023] 3. High level of intelligence and convenient and reliable operation: It integrates an intelligent seeding monitoring system and a variable fertilizer application system, which can monitor the seeding status of each row in real time, provide timely and accurate fault alarms, and automatically adjust the amount of fertilizer according to the vehicle speed. It realizes the operation requirements of precision agriculture, greatly reduces the labor intensity of the driver, and improves the efficiency and quality controllability of operation.

[0024] 4. The machine features a rational structural design with strong adaptability and reliability: the parallel four-bar linkage mechanism ensures that each sowing unit independently adapts to surface undulations, maintaining a stable sowing depth. The V-shaped hollow rubber compaction wheel provides excellent soil covering and compaction with minimal soil disturbance and strong moisture retention. Key components such as the seed metering device and fertilizer metering device are modularly designed for convenient maintenance. The machine boasts a robust structure and a rich and intuitive adjustment mechanism, enabling it to widely adapt to the conservation tillage requirements of different regions in Northeast, North, and Northwest China. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. It should be emphasized that these drawings are all schematic diagrams, intended to clearly illustrate the structural principles of the present invention, the connection relationships between the components, and the working method, and do not need to be drawn strictly according to the scale and details of actual engineering drawings.

[0026] Figure 1 This is a side view schematic diagram of the overall structure of the no-till finger-clamp precision fertilizer seeder according to an embodiment of the present invention.

[0027] Figure 2 This is a front view of the no-till finger-clamp precision fertilizer seeder.

[0028] Figure 3 This is a schematic diagram of the working status of the no-till finger-clamp precision fertilizer seeder.

[0029] Figure 4 This is a schematic diagram of the fertilizer applicator and its adjustment mechanism.

[0030] Figure 5 This refers to a schematic diagram of the adjustment structure of a clamp-type seed metering device.

[0031] Figure 6 This is a schematic diagram of the seed metering device clutch in the engaged state.

[0032] Figure 7 This is a schematic diagram of the seed metering device clutch in the disengaged state.

[0033] Figure 8 This is a schematic diagram of the transmission mechanism.

[0034] Figure 9 This is a schematic diagram of the ballast and its pressure regulating mechanism.

[0035] Figure 10 This is a schematic diagram of the height adjustment mechanism for the weeding wheel.

[0036] Figure 11 This is a connection diagram of the intelligent monitoring system for the no-till finger-clamp precision fertilizer planter.

[0037] Figure 12 This is a schematic diagram of the variable fertilization system. Detailed Implementation

[0038] The specific embodiments of the no-till finger-clamp precision fertilizer seeder provided by the present invention will be described in detail below with reference to the accompanying drawings. This description is intended to enable those skilled in the art to fully understand and implement the present invention, and is not intended to limit the scope of protection of the present invention.

[0039] like Figures 1-3 The diagram shown is a typical embodiment of a no-till finger-clamp precision fertilizer seeder according to an embodiment of the present invention. It mainly includes a frame 100, a traction beam 200, a fertilization mechanism 300, a seeding mechanism 400, a ground wheel 500, a transmission mechanism 600, a contour pressing mechanism 700, a seedbed straw cleaning mechanism 800, an intelligent monitoring system 900, and a variable-rate fertilizer application system 1000.

[0040] The frame 100, serving as the skeleton of the entire seeder, is welded together from components such as the traction beam 200, the blade holder crossbeam 110, the main beam 120, the fertilizer box bracket 130, and the transmission mechanism bracket 140. All functional components are mounted on the frame 100 via bolts or hinges, ensuring the structural rigidity and stability of the entire machine. The traction beam 200 has a traction hook 210 at its front end for connection to the tractor's traction device.

[0041] The fertilization mechanism 300 employs a side-deep fertilization method, which is key to achieving precise fertilization in this embodiment of the invention. It mainly consists of a fertilizer tank 310, a fertilizer dispenser 320, a fertilizer conveying pipe 330, and a fertilizer furrow opener 340. The fertilizer tank 310 has a volume ranging from 210 liters to 525 liters depending on the model, and can hold approximately 300 to 800 kg of fertilizer. The fertilizer dispenser 320 can be a double-auger type or an external grooved wheel type; this embodiment uses a double-auger type as an example. It is driven by a transmission mechanism 600 to quantitatively discharge fertilizer. The fertilizer conveying pipe 330 uses a high-strength rubber tube to guide fertilizer into the fertilizer furrow opener 340. The fertilizer furrow opener 340 is a large-diameter notched disc 341, which is connected to the frame 100 via an arm 342. (See attached...) Figure 4 The diagram shows a schematic of the fertilization position adjustment structure according to an embodiment of the present invention. By loosening the U-shaped clip 343, the depth adjustment magazine 344 can be moved left and right, thereby adjusting the lateral distance between the notched disc 341 and the seed (usually 7-12 cm). By loosening the top screw 345 and moving the support arm 342 up and down, the fertilization depth (usually 5-8 cm below the seed) can be adjusted. To ensure the trench width and reduce soil disturbance, the notched disc 341 maintains an angle of approximately 6 degrees with the direction of travel. This angle can be finely adjusted and locked by adjusting the three top screws 345 on the depth adjustment magazine 344. In addition, a soil squeezing blade 346 is provided on the inner side of the notched disc 341. Its front part is in slight contact with the disc, and its rear part is slightly higher than the fertilizer delivery pipe opening, which together completes the trenching, fertilizer delivery, and soil covering process, preventing trench wall collapse and fertilizer volatilization.

[0042] The sowing mechanism 400 is the core component for precision sowing. It mainly consists of a seed box 410, a finger-clamp seed metering device 420, a seed guide tube, and a sowing furrow opener. The seed box 410 has a volume of 32.5 liters per row and can hold approximately 25 kg of seeds. The finger-clamp seed metering device 420 is one of the key components of this invention, comprising a metal housing 421, a finger clamping disc 422, a seed cleaning brush 423, a seed guide belt, and a clutch mechanism. Multiple finger clamps 426 are evenly arranged on the finger clamping disc 422 for precisely picking up individual seeds. The distance between the seed cleaning brush 423 and the finger clamps 426 can be adjusted in ten increments using a special wrench 428 inserted into the adjustment hole (as shown in the attached diagram). Figure 5 (As shown) Rotating clockwise moves the brush closer to the finger clip, reducing reseeding; rotating counterclockwise moves the brush 423 away from the finger clip 426, reducing missed seeding. The factory default is the third position. The position adjustment is visually displayed via position icon 425. The finger clip seed metering device 420 can also be equipped with a shock-absorbing device 427 to dampen the seed metering shaft 424. The clutch mechanism consists of a clutch shift tooth 4293 and a seed metering sprocket protrusion 4292, and is mounted via a clutch bracket 4294, as shown in the attached diagram. Figure 6 and 7 As shown in the diagram (clutch state schematic), rotating the pry bar 4293 upwards separates it from the protrusion 4292, cutting off power and facilitating the maintenance and transportation of individual seeding units. The seeding furrow opener consists of a pair of inclined double discs, and the furrow depth can be adjusted via a seeding depth adjustment handle, with an adjustment range of 30-100 mm, a total of 15 levels, each level being 5 mm. The seeding mechanism 400 is connected to the main beam 120 via a parallel four-bar linkage contouring mechanism 450, which ensures that each seeding unit can move independently with the terrain undulations, maintaining a consistent seeding depth.

[0043] The transmission mechanism 600 is responsible for transmitting the rotational power of the ground wheel 500 to the seed metering device and the fertilizer metering device. For example... Figure 8 As shown, it adopts an upper-mounted chain drive, mainly including a drive wheel 620, various sprocket sets (such as a seeding drive sprocket set 631, a fertilizer driven sprocket set 632, etc.), a drive chain 640, and a tension wheel 650. The ground wheel 500 is a rubber wheel with a diameter of 700 or 885 mm. The drive wheel 620 is pressed against the ground wheel 500 tread by an adjusting screw 660 and a drive rubber wheel tension spring 670, and is driven by friction. By changing the length of the adjusting screw 660, the tension of the tension spring 670 can be adjusted, thereby changing the friction between the drive wheel 620 and the ground wheel 500 to prevent slippage or excessive wear. After the power is output through the shaft of the drive wheel 620, it drives the fertilizer dispensing shaft and the seed dispensing shaft respectively through different chain and sprocket combinations. The adjustment of the seeding spacing and fertilizer application rate is mainly achieved by changing the sprocket combination with different tooth counts. Relevant parameters can be found in the plant spacing reference table and fertilizer application rate reference table pasted on the fertilizer box.

[0044] The contour-following compaction mechanism 700 is used to cover and compact the sown seeds. It mainly includes a V-shaped hollow rubber compaction wheel 710, a compaction wheel support, and a pressure adjustment mechanism. (See attached diagram) Figure 9 The diagram shows the structure for adjusting the compaction intensity. The centerline of the compaction wheel 710 should be aligned with the centerline of the seeder / furrow opener. If misalignment occurs, it can be corrected by loosening the locking nut 731 and rotating the left and right eccentric sleeves 732. The compaction intensity is adjusted in multiple levels using a push-type adjustment handle 733. Moving the handle backward increases the compaction intensity, and vice versa. The adjustment range is typically 350-850 g / cm². Each setting is fixed by a positioning groove 734. The V-shaped arrangement and hollow rubber material design ensure uniform soil coverage, moderate compaction, and good soil removal performance, preventing soil sticking. A compaction wheel scraper 735 can also be installed below the compaction wheel 710 for leveling the soil surface.

[0045] The seedbed straw cleaning mechanism 800 is located at the very front of each sowing unit and is used to clean the straw and weeds on the seedbed before sowing. It mainly consists of a weeding wheel 810 and a soil-loosening and stubble-removing disc 820. The height of the weeding wheel 810 can be adjusted via a cam disc 830, as shown in the attached diagram. Figure 10 The diagram shows the adjustment mechanism of the weeding wheel. Pressing the spring pin 831 inward causes the flower disc 830 to disengage from the positioning pin 832. Rotating the flower disc 830 changes the depth of the weeding wheel 810 into the soil. After determining the position, the positioning pin 832 falls back into the flower disc hole for positioning. This mechanism can effectively separate the straw to the left and right, and loosen the dry surface soil, creating favorable conditions for sowing.

[0046] The intelligent monitoring system 900 is an important manifestation of the intelligence of the no-till seeder in this embodiment of the invention. (See attached image) Figure 11 The diagram shows the connection of the intelligent monitoring system, which mainly consists of a monitor host 910, an alarm speaker 920, and multiple seed tube sensors 930 connected by waterproof cables. The seed tube sensors 930 use high-performance low-power laser components and are installed on the seed tube of each sowing unit to detect seed falling signals in real time. Based on preset plant spacing and row spacing parameters and the received seed signals, the monitor host 910 calculates and displays data such as the number of seeds sown per row, operating speed, and sowing area, and calculates the missed sowing rate and reseeding rate. When a blockage or missed sowing is detected in a row (no signal time exceeding 0.3-0.5 seconds), the host controls the alarm 920 to immediately issue an audible and visual alarm and display the faulty row number, reminding the driver to handle the situation promptly. If the fault is not resolved after 20 seconds, the system defaults to the row being in a turning position and stops the alarm counting.

[0047] The variable fertilizer application system 1000 is used to precisely apply fertilizer during sowing. It mainly includes a fertilizer box 1010, a variable fertilizer applicator 1020, and a fertilizer delivery pipe 1030. The variable fertilizer applicator 1020 consists of an electronic controller 1021, a fertilizer box 1022, a drive motor 1023, and a Hall effect tachometer 1024. Figure 12 The diagram shows the principle block diagram of the variable fertilizer application system. A Hall effect tachometer 1024 detects the rotational speed of the ground wheel 500 rpm in real time, thereby calculating the operating speed. The electronic controller 1021 receives the speed signal and linearly adjusts the rotational speed of the drive motor 1023 accordingly, thus changing the working length of the inner groove wheel of the fertilizer box 1022. This achieves stepless variable control of the fertilizer application rate, ensuring stable fertilizer application per unit area. The fertilizer box 1022 is an external groove wheel type. The fertilizer application rate can be coarsely adjusted (usually 10-20mm) by manually loosening the wing bolt and rotating the adjusting handwheel 1026. After adjustment, the bolt is tightened. The system also has an alarm function; when the motor is blocked or the operating speed exceeds the limit (e.g., >12km / h), the alarm will sound a bird call.

[0048] The working process of this invention is as follows:

[0049] Before operation, adjust the sowing spacing and base fertilizer application rate according to agronomic requirements by changing the sprocket. Set the sowing depth, fertilization depth and lateral distance, compaction intensity, and weeding wheel height manually. Mix the seeds with an appropriate amount of seed lubricant and add them to the seed box 410. Add granular, dry base fertilizer to the fertilizer box 310 and special starter fertilizer to the starter fertilizer box 1010. Properly connect the seeder to the tractor and connect the hydraulic lines and the power and signal cables of the intelligent monitoring system 900.

[0050] During operation, the tractor's hydraulic output valve controls the ground wheel cylinders, slowly lowering the seeder to the ground. It starts slowly and gradually increases speed, maintaining a speed of 6-8 km / h. The ground wheel 500 rotates, driving the fertilizer applicator 320 and seed applicator via the transmission mechanism 600. The seedbed cleaning mechanism 800 first separates the straw, the fertilizer furrow opener 340 opens fertilizer furrows and applies base fertilizer laterally, then the seed furrow opener 420 opens seed furrows, and the finger-type seed applicator 420 precisely places individual seeds into the furrows. Finally, the soil covering and compaction mechanism 700 completes the soil covering and compaction. Simultaneously, the intelligent monitoring system 900 monitors the sowing status in real time, and the variable fertilizer application system 1000 automatically adjusts the fertilizer application rate according to the vehicle speed.

[0051] When turning at the edge of the field or during transportation, the seeder should be raised to its highest point. For long-distance transportation, a hydraulic cylinder support should be installed to unload the hydraulic system.

[0052] As can be seen from the above description of specific embodiments, the present invention effectively solves the clogging problem under high-intensity straw mulching through the high degree of synergy between mechanical structure and intelligent control system, realizes precision sowing and precise fertilization under high-speed operation, has a high degree of intelligence, reliable operation quality, strong adaptability, and good prospects for promotion and application.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A no-till finger-clamp precision fertilizer seeder, comprising a frame, a traction beam, a fertilization mechanism, a seeding mechanism, a ground wheel, and a transmission mechanism, characterized in that: The seeder also includes an intelligent monitoring system and a variable-rate fertilizer application system; The intelligent monitoring system includes a seeding monitor host, a seed guide tube sensor, and an alarm, which is used to monitor the seeding status in real time and issue an alarm when missed seeding or blockage occurs. The variable fertilizer application system includes a fertilizer box, a motor, an electronic controller, and a Hall effect speed meter, which can automatically adjust the amount of fertilizer applied according to the operating speed of the seeder. The fertilization mechanism adopts a side-deep fertilization method, with the fertilization position located 7-12 cm to the side of the seed and 5-8 cm below the seed; The transmission mechanism is a dual-transmission structure, including left and right transmission rubber wheel components and a transmission assembly. The left and right transmission rubber wheel components are symmetrically arranged on both sides of the transmission assembly.

2. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The sowing mechanism employs a finger-clamp seed metering device, which includes: A chuck, used to pick up a single seed; The seed cleaning brush has an adjustable distance between itself and the finger clamping disc to control the reseeding rate and the empty hole rate. The clutch mechanism enables the engagement and disengagement of the seed metering device's power; and the finger-clamp seed metering device is connected to the frame via a parallel four-bar linkage conformal mechanism.

3. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The fertilization mechanism includes a notched disc trencher and a soil squeezing blade. The front part of the soil squeezing blade makes slight contact with the notched disc, and the rear side is slightly higher than the outer side of the fertilization pipe. The notched disc has an angle of 6 degrees with the direction of travel.

4. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The seeder also includes a V-shaped hollow rubber wheel soil compactor, the compaction intensity of which is adjusted by a multi-stage adjustment mechanism, with an adjustment range of 350-850 g / cm².

5. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The seeder also includes a seedbed straw cleaning mechanism, which consists of a weeding wheel and a soil loosening and stubble removal disc; the height of the weeding wheel is adjusted by a cam disc adjustment mechanism.

6. An intelligent control method for the no-till finger-clamp precision fertilizer seeder according to any one of claims 1-5, characterized in that, The method includes: The seed flow signal is detected in real time by the seed guide tube sensor and transmitted to the seeding monitor host. The sowing monitor host calculates the missed sowing rate and re-sowing rate based on the preset plant spacing and the detected signals, and issues an audible and visual alarm when the threshold is exceeded. The operating speed of the seeder is detected in real time by a Hall effect tachometer, and the speed signal is transmitted to the electronic controller. The electronic controller adjusts the speed of the motor driving the fertilizer box according to the operating speed signal, thereby realizing variable control of the fertilizer application amount.

7. The intelligent control method according to claim 6, characterized in that, When the seeding monitor detects that a row has no seed falling signal for 20 consecutive seconds, it automatically determines that the row has turned at the end of the field or the fault has ended, and stops the alarm count for that row.

8. The no-till finger-clamp precision fertilizer seeder according to claim 2, characterized in that, The distance between the cleaning brush and the finger clip is precisely adjusted by an adjustment mechanism with ten settings, where the fifth setting is the setting where the distance between the brush and the finger clip is the closest.

9. The no-till finger-clamp precision fertilizer seeder according to claim 3, characterized in that, The soil squeezing blade is mounted on the bracket by three adjusting bolts. Tightening the upper bolts will bring the lower part of the soil squeezing blade closer to the notch disc, and tightening the rear bolts will bring the front part of the soil squeezing blade closer to the notch disc.

10. The no-till finger-clamp precision fertilizer seeder according to claim 4, characterized in that, The presser is mounted on the press wheel bracket via an eccentric sleeve and a pressure adjusting spring. The pressing intensity is adjusted by changing the position of the eccentric sleeve by moving the adjustment handle.

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