A red-yellow soil area low phosphorus paddy field biochar-based phosphorus solubilizing bacteria agent application device and method

Abstract

The present application relates to the technical fields of agricultural paddy field fungicide application preparation, and more particularly to a red and yellow soil area low phosphorus paddy field biochar-based phosphorus solubilizing bacteria application device and method, which comprises an outer frame and a connecting head, both of which are metal components, and are fixed by high-strength bolts, and the connecting head is used for being connected with a traction device; a support frame is arranged at the central position of the outer frame, a storage hopper for storing biochar-based phosphorus solubilizing bacteria is fixedly connected to the support frame, a material application hopper is matched to the bottom of the storage hopper, stirring rollers are symmetrically installed in the storage hopper, the two end shafts of the stirring rollers are exposed to the side walls of the storage hopper, and gears are concentrically installed on the end faces of the shafts; a cross hole is formed in the top of the support frame, a displacement rod is inserted into the cross hole, a linkage rod is welded to the bottom of the displacement rod, and a driving part is arranged below the linkage rod; the present application has the characteristics of bacteria agent anti-caking and bacteria agent uniform mixing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural paddy field fungicide application preparation technology, and particularly relates to a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application device and method. BACKGROUND

[0002] The red-yellow soil area low-phosphorus paddy field is widely distributed in the south of China, and the area is considerable. The soil of this kind of paddy field is strongly acidic, and its pH value is often lower than 5.5, which is mainly due to the local climate of high temperature and heavy rain, resulting in a large amount of leaching of base ions in the soil. Moreover, the content of iron and aluminum oxides in the soil is extremely high and gradually accumulates in the long-term soil formation process. These iron and aluminum oxides, like a “phosphorus trap”, are prone to chemical reaction with phosphorus in the soil to form compounds such as insoluble iron phosphate and aluminum phosphate, which greatly reduces the availability of phosphorus in the soil, seriously restricts the growth and development process of rice, causes the rice plant to be short, the tillering to be reduced, and the leaves to be yellow, and ultimately makes the yield improvement face many difficulties. In order to reverse this situation, biochar-based phosphorus solubilizing bacterial agents have gradually become one of the important ways to improve the utilization rate of soil phosphorus due to their unique phosphorus solubilizing characteristics and improvement effect on the soil environment.

[0003] In the aspect of application of biochar-based phosphorus solubilizing bacterial agents, compared with ordinary paddy fields, the biochar-based phosphorus solubilizing bacterial agents in the red-yellow soil area low-phosphorus paddy field are more difficult to store and apply. The conventional biochar-based phosphorus solubilizing bacterial agents are prone to adsorb moisture and impurities in the surrounding environment during storage due to the strong adsorption of biochar itself, and the secretion produced by the metabolic activity of microorganisms. In the relatively humid and warm environment of the red-yellow soil area, caking is particularly prone to occur. The soil environment of ordinary paddy fields is relatively stable, and the risk of bacterial caking is low. Once the bacterial agents are caked, it is difficult to ensure uniformity during application, which is more likely to cause uneven distribution of bacterial agents in the heavy soil conditions of the red-yellow soil area low-phosphorus paddy field, so that the activity of phosphorus solubilizing bacteria is greatly reduced, and it is difficult to fully exert the phosphorus solubilizing effect in the soil.

[0004] Furthermore, the existing application device is relatively easy to mix the bacterial agents with the soil when applying the bacterial agents in ordinary paddy fields because the soil structure of ordinary paddy fields is beneficial to the diffusion of bacterial agents. However, in the red-yellow soil area low-phosphorus paddy field, the soil is heavy, and it is difficult for the existing device to uniformly and deeply mix the bacterial agents with the soil. If the bacterial agents cannot fully penetrate into the main distribution area of the root system, they cannot effectively contact the fixed phosphorus, the phosphorus solubilizing effect is damaged, and it is difficult to meet the absorption demand of rice for phosphorus in this special soil condition.

[0005] Therefore, it is necessary to provide a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application device and method to solve the above technical problems. SUMMARY

[0006] The application provides a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application device and method.

[0007] The technical scheme adopted by the application to solve the technical problem is: a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application device, comprising an outer frame and a connecting head, both of which are metal components, and the two are fixed by high-strength bolts, and the connecting head is used for being connected with a traction equipment;

[0008] A support frame is arranged at the center position of the outer frame, a storage hopper for storing biochar-based phosphorus solubilizing bacterial agents is fixedly connected on the support frame, a feeding hopper is matched with the bottom of the storage hopper, stirring rollers are symmetrically installed in the storage hopper, the two ends of the stirring rollers are exposed to the side wall of the storage hopper through rotating shafts, and gears are concentrically installed on the end faces of the rotating shafts.

[0009] A cross hole is formed in the top of the support frame, a displacement rod is inserted into the cross hole, a linkage rod is welded to the bottom of the displacement rod, a driving part is arranged below the linkage rod, a T-shaped rod is welded to the top surface of the support frame, a C-shaped plate is installed on the top of the displacement rod, the C-shaped plate is sleeved on the T-shaped rod, and an extrusion spring is installed on the outer wall of the T-shaped rod and above the bottom of the C-shaped plate.

[0010] The driving part comprises driving shafts and driven shafts which are symmetrically and rotatably installed on both sides of the outer frame, driving arms and driven arms are fixedly installed on the end faces of the driving shafts and the driven shafts towards the inside of the outer frame, the driving arms and the driven arms are the same in size and shape, tooth blocks are arranged at the two end arc faces of the driving arms and the driven arms, the tooth blocks on the driving arms and the driven arms can be meshed with each other, side plates are fixedly installed at the center positions of the same sides of the driving arms and the driven arms, pin shafts are arranged on one side of the same end of the side plates at any position, linkage arms are installed on the two pin shafts on the same side, and the linkage arms are located directly below the linkage rod.

[0011] A synchronous wheel is concentrically installed on the end face of the driving shaft away from the inside of the outer frame, a driving motor is installed on the outer side wall of the outer frame through a motor fixing frame, and the output shaft of the driving motor is connected with the synchronous wheel through a synchronous belt.

[0012] Preferably, hollow gears are arranged at the concentric positions of the driving shafts and the driven shafts, the hollow gears are located on the inner side of the outer frame and are connected with the driving arms and the driven arms through crossbars, first gear shafts are meshingly connected to the bottoms of the hollow gears, second gear shafts are meshingly connected to the bottoms of the first gear shafts, the first gear shafts and the second gear shafts are installed on the outer frame, positioning ring plates are installed on one side of the second gear shafts through connecting rods at the concentric positions, the diameters of the positioning ring plates are greater than the diameter of the second gear shafts, and soil turning rods are arranged at equal angles along the circumferences between two pairs of vertical positioning ring plates in the same vertical plane.

[0013] Preferably, the two end faces of the soil turning rod are symmetrically provided with plug blocks, and plug slots for mounting the plug blocks are formed at equal angles along the outer periphery of the positioning ring plate, and a threaded hole is formed on one side of the plug slot, and a locking bolt is mounted at the threaded hole.

[0014] Preferably, the inner side wall of the outer frame is symmetrically provided with sliding rails, and a sliding block is mounted in the sliding rail, and an axle rod and a fixed block are respectively mounted on the side wall of the sliding block, and a swing arm is rotatably mounted on the axle rod, and a crank is rotatably connected to the other end of the swing arm through the axle rod, and the other end of the crank is fixedly connected to the driven driving shaft, and a flat plate is mounted on the side wall of the fixed block.

[0015] Preferably, the inside of the flat plate is symmetrically provided with a long slot, and an extension plate is arranged on one side of the flat plate, and the extension plate and the flat plate are locked through positioning bolts and the long slot.

[0016] Preferably, the bottom end face of the linkage rod is welded with a ball head, and the outer surface of the ball head is a smooth surface.

[0017] Preferably, the linkage rod is a telescopic rod, which can adjust its own length in the vertical direction.

[0018] In addition, the application also provides a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application method, which specifically comprises the following steps:

[0019] S1, device inspection: check whether each component such as the outer frame, the connecting head, the storage hopper and the driving part is intact, and ensure that the above components are tightly connected, without looseness, damage or blockage. After the inspection is completed, the connecting head is connected to the traction equipment, which is generally an agricultural tractor;

[0020] S2, bacterial agent selection and filling: using soil sensors and related detection equipment, the soil acidity and alkalinity, phosphorus content, organic matter content, iron and aluminum oxide content, and soil texture of the red-yellow soil area low-phosphorus paddy field are comprehensively detected;

[0021] Record the test results, and select the corresponding type of biochar-based phosphorus solubilizing bacterial agent according to the test results;

[0022] Slowly pour the selected biochar-based phosphorus solubilizing bacterial agent into the storage hopper, and the filling amount of the biochar-based phosphorus solubilizing bacterial agent in the storage hopper should not exceed 80% of the volume, and the opening of the storage hopper is sealed by a sealing cover;

[0023] S3, selection of application method: according to different types of fields, one of the reciprocating straight-line application, transverse strip application and spiral application is selected, and the biochar-based phosphorus solubilizing bacterial agent is applied by the agricultural tractor driving the opened material hopper;

[0024] S4, anti-caking treatment: during the application of the biochar-based phosphorus solubilizing bacterial agent, the driving part is started, the symmetrical stirring rollers in the storage hopper are driven to rotate by the driving part, so that the biochar-based phosphorus solubilizing bacterial agent in the storage hopper is uniformly shaken;

[0025] S5, subsequent treatment: after the application is completed, the outer frame is moved to an open place at the edge of the field by the agricultural tractor, and the remaining biochar-based phosphorus solubilizing bacterial agent in the storage hopper is emptied;

[0026] If there is a lot of remaining biochar-based phosphorus solubilizing bacterial agent and it is well preserved, it is collected by sealing bag packaging and stored in a ventilated place for subsequent small amount of supplementary application; if there is little remaining biochar-based phosphorus solubilizing bacterial agent or it has been contaminated and deteriorated, it should be transported to a designated open area for deep burial treatment according to the regulations, and cannot be discarded at will;

[0027] Then, the components such as the storage hopper and the application hopper are thoroughly cleaned with clean water to remove the remaining bacterial agent and soil.

[0028] Compared with the related art, the biochar-based phosphorus solubilizing bacterial agent application device and method for red-yellow soil area low-phosphorus paddy field provided by the application has the following beneficial effects:

[0029] (1) The biochar-based phosphorus solubilizing bacterial agent application device and method for red-yellow soil area low-phosphorus paddy field provided by the application controls the operation of the driving motor, and after the driving motor operates, the synchronous belt drives the synchronous wheel and the driving shaft to rotate, and after the driving shaft rotates, the linkage arm pulls the driven arm to rotate. When the upper end surface of the linkage arm rises in height, it will contact the linkage rod and exert a pressing force on it. The linkage rod drives the displacement rod to rise along the cross hole under the action of the pressing force. The displacement rod rises and drives the C-shaped plate to compress the compression spring. At the same time, the driving gear rotates to drive the stirring roller to work in the storage hopper, so that the biochar-based phosphorus solubilizing bacterial agent in the storage hopper is uniformly shaken, avoiding the occurrence of caking during application, making the bacterial agent distribution more uniform, and making the biochar-based phosphorus solubilizing bacterial agent fully contact with the air during the shaking process, increasing the dissolved oxygen content in the bacterial agent. Phosphorus-solubilizing bacteria are mostly aerobic microorganisms, and sufficient oxygen is helpful for their respiration and metabolism, thereby enhancing their activity and improving their phosphorus-solubilizing ability;

[0030] (2) This invention provides a device and method for applying biochar-based phosphorus-solubilizing bacteria to low-phosphorus paddy fields in red and yellow soil areas. After the hollow gear rotates, the first gear shaft drives the second gear shaft to rotate. After the second gear shaft rotates, it drives the positioning ring plate to rotate together. After the positioning ring plate rotates, it randomly drives multiple soil-turning rods to rotate. The rotating soil-turning rods directly contact the soil in the field and turn it over, so as to achieve the effect of applying biochar-based phosphorus-solubilizing bacteria while tilling. When tilling, the soil is in a loose and turned state, and the biochar-based phosphorus-solubilizing bacteria can come into more full contact with and mix with the soil, so that the phosphorus-solubilizing bacteria can be evenly distributed in the soil, increasing the contact area with phosphorus elements in the soil, which is conducive to better exerting the phosphorus-solubilizing effect.

[0031] (3) The present invention provides a device and method for applying biochar-based phosphorus-solubilizing bacteria in low-phosphorus paddy fields in red and yellow soil areas. When the driven shaft of the present invention rotates, it drives the crank to rotate together. After the crank rotates, it drives the swing arm to move. Then the swing arm drives the slider to move back and forth in the slide rail. The fixed block moves back and forth with the slider. During the reciprocating movement of the fixed block, it synchronously drives the plate connected to it to scrape and turn the soil, so that the soil is leveled again without the need for subsequent manual treatment. Attached Figure Description

[0032] Figure 1 This is a perspective view of the overall structure of the present invention;

[0033] Figure 2 This is a top view of the overall structure of the present invention;

[0034] Figure 3 This is a partial structural schematic diagram of the present invention;

[0035] Figure 4 For the present invention Figure 1 A magnified view of a portion of region A in the middle;

[0036] Figure 5 For the present invention Figure 3 A magnified view of a portion of region B in the middle;

[0037] Figure 6 For the present invention Figure 3 A magnified view of a portion of region C in the middle;

[0038] Figure 7 This is a flowchart of the present invention;

[0039] The figure label: 1, outer frame, 2, connecting head, 3, support frame, 4, drive part, 5, hollow gear, 6, slide rail, 31, storage hopper, 32, application hopper, 33, stirring roller, 34, gear, 35, cross hole, 36, displacement rod, 37, T-shaped rod, 38, C-shaped plate, 39, extrusion spring, 361, linkage rod, 41, driving shaft, 42, driven driving shaft, 43, driving arm, 44, driven arm, 45, side plate, 46, linkage arm, 47, synchronous wheel, 451, pin shaft, 48, driving motor, 51, crossbar, 52, first gear shaft, 53, second gear shaft, 54, positioning ring plate, 55, soil turning rod, 551, plug, 552, slot, 553, locking bolt, 60, sliding block, 61, shaft, 62, fixed block, 63, swing arm, 64, crank, 610, flat plate, 611, long hole, 612, positioning bolt, 613, extension plate. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0041] In addition, the terms in the following are defined based on the functions in the present application, which can be different according to the intention or custom of the user or user. Therefore, these terms are defined based on the entire content of the specification.

[0042] Reference Figures 1-7 The red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacteria application device and method provided by the present application comprises an outer frame 1 and a connecting head 2. Both the outer frame 1 and the connecting head 2 are metal components, and they are fixed by high-strength bolts. The connecting head 2 is used to be connected with a traction device, which is generally an agricultural tractor. The connection process between the two is described in the present technology, and the present application will not be described in detail.

[0043] A support frame 3 is arranged at the center of the outer frame 1. A storage hopper 31 for storing biochar-based phosphorus solubilizing bacteria is fixedly connected to the support frame 3. An application hopper 32 is arranged at the bottom of the storage hopper 31. A control valve for controlling the flow rate is arranged on the application hopper 32. The biochar-based phosphorus solubilizing bacteria can be unloaded by opening the control valve. The control valve can also control the unloading amount of the biochar-based phosphorus solubilizing bacteria.

[0044] A stirring roller 33 is symmetrically installed inside the storage hopper 31. Figure 1 As shown in the figure, the main position of the stirring roller 33 is composed of a plurality of equal-diameter circular rods arranged circumferentially. The two end shafts of the stirring roller 33 protrude out of the side wall of the storage hopper 31. Gear 34 is concentrically installed on the end face of the shaft. When the gear 34 rotates, it can drive the stirring roller 33 to rotate together.

[0045] The top of the support frame 3 is provided with a cross hole 35, and a displacement rod 36 is inserted into the cross hole 35 and can move in the vertical direction without changing the horizontal position;

[0046] The bottom of the displacement rod 36 is welded with a linkage rod 361, and the linkage rod 361 is provided below a driving part 4. The top surface of the support frame 3 is welded with a T-shaped rod 37. The top of the displacement rod 36 is provided with a C-shaped plate 38, and the bottom of the C-shaped plate 38 is sleeved on the T-shaped rod 37. The outer wall of the T-shaped rod 37 and above the bottom of the C-shaped plate 38 is provided with an extrusion spring 39. Under normal circumstances, the extrusion spring 39 pushes the lower end surface of the C-shaped plate 38 to tightly adhere to the top surface of the support frame 3.

[0047] The driving part 4 includes a driving shaft 41 and a driven shaft 42 symmetrically installed on both sides of the outer frame 1. The driving shaft 41 and the driven shaft 42 are respectively provided with a driving arm 43 and a driven arm 44 fixedly installed on the end surface towards the inside of the outer frame 1. The driving arm 43 and the driven arm 44 are the same in size and shape, and the movement diameters of the driving arm 43 and the driven arm 44 along the driving shaft 41 and the driven shaft 42 are the same.

[0048] The driving arm 43 and the driven arm 44 are provided with tooth blocks at the arc-shaped ends, and the tooth blocks on the driving arm 43 and the driven arm 44 can be engaged with each other, that is, the tooth block at the end of the driving arm 43 is combined with the tooth block at the end of the driven arm 44 after the driving arm 43 moves a certain angle, so as to drive the driven arm 44 to move together.

[0049] The driving arm 43 and the driven arm 44 are provided with tooth blocks at the arc-shaped ends, and the tooth blocks on the driving arm 43 and the driven arm 44 can be engaged with each other, that is, the tooth block at the end of the driving arm 43 is combined with the tooth block at the end of the driven arm 44 after the driving arm 43 moves a certain angle, so as to drive the driven arm 44 to move together.

[0050] The end face of the driving shaft 41 away from the inside of the outer frame 1 is concentrically installed with a synchronous wheel 47, and a driving motor 48 is installed on the outer side wall of the outer frame 1 through a motor fixing frame. The output shaft of the driving motor 48 is connected with the synchronous wheel 47 through a synchronous belt. In the specific work, the driving motor 48 is controlled to work. After the driving motor 48 works, it rotates to drive the synchronous wheel 47 and the driving shaft 41 through the synchronous belt. After the driving shaft 41 rotates, it pulls the driven arm 44 to rotate through the linkage arm 46. In this process, the two ends of the linkage arm 46 make circular motion around the axis of the driving shaft 41 and the driven shaft 42 respectively. The upper end face of the linkage arm 46 produces a horizontal height reciprocating change. When the upper end face of the linkage arm 46 rises horizontally, it will contact the linkage rod 361 and exert a squeezing force on it. Under the action of the squeezing force, the linkage rod 361 drives the displacement rod 36 to rise along the cross hole 35. After the displacement rod 36 rises, it drives the C-shaped plate 38 to compress the compression spring 39. At the same time, the driving gear 34 rotates to drive the stirring roller 33 to work in the storage hopper 31, so that the biochar-based phosphorus solubilizing bacteria in the storage hopper 31 are uniformly shaken to avoid clumping during application. During the shaking process, the biochar-based phosphorus solubilizing bacteria are fully contacted with air to increase the dissolved oxygen content in the bacteria. Phosphorus solubilizing bacteria are mostly aerobic microorganisms, and sufficient oxygen is helpful for their respiration and metabolism, thereby enhancing their activity and improving their phosphorus solubilizing capacity.

[0051] At the same time, when the upper end face of the linkage arm 46 descends horizontally, the rebound force generated by the compression of the compression spring 39 drives the C-shaped plate 38 to reset, i.e. the displacement rod 36 vertically descends. Based on the above-mentioned reverse rotation, the driving gear 34 reversely rotates again to increase the stirring and shaking effect of the biochar-based phosphorus solubilizing bacteria. At the same time, the enhanced shaking effect can redistribute the moisture in the biochar-based phosphorus solubilizing bacteria, so that the humidity of the entire biochar-based phosphorus solubilizing bacteria is more uniform, which is conducive to maintaining the activity of the biochar-based phosphorus solubilizing bacteria and avoiding the influence of local over-drying or over-wetting on the performance of the biochar-based phosphorus solubilizing bacteria.

[0052] The bottom end face of the linkage rod 361 is welded with a ball head, and the outer surface of the ball head is a smooth surface. At this time, the area provided with the ball head is directly in contact with the upper end face of the linkage arm 46, thereby reducing the wear of the upper end face of the linkage arm 46.

[0053] The linkage rod 361 can be selected as a telescopic rod, which can adjust its own length in the vertical direction. Through the length adjustment, the contact time of the linkage arm 46 and the above-mentioned ball head can be changed. It can also be understood that the lifting distance of the linkage rod 361 is controllable, i.e. the rotation angle of the stirring roller 33 is adjustable.

[0054] In another embodiment, referring to Figures 1-6The concentric positions of the driving shaft 41 and the driven shaft 42 are provided with hollow gears 5, which are located on the inner side of the outer frame 1 and are connected with the driving arm 43 and the driven arm 44 through the cross bars 51, that is, the hollow gears 5 rotate with the driving arm 43 and the driven arm 44 when the driving arm 43 and the driven arm 44 rotate;

[0055] The bottom of the hollow gear 5 is engaged with the first gear shaft 52, the bottom of the first gear shaft 52 is engaged with the second gear shaft 53, and the first gear shaft 52 and the second gear shaft 53 are both installed on the outer frame 1. The second gear shaft 53 is provided with a positioning ring plate 54 on one side through a connecting rod, and the diameter of the positioning ring plate 54 is greater than that of the second gear shaft 53. In the same vertical plane, two pairs of positioning ring plates 54 are arranged at equal angles along the circumference. The specific working process is as follows: when the hollow gear 5 rotates, the first gear shaft 52 drives the second gear shaft 53 to rotate, and the second gear shaft 53 drives the positioning ring plate 54 to rotate, and the positioning ring plate 54 drives the plurality of soil turning rods 55 to rotate, and the rotating soil turning rods 55 directly contact and turn over the soil in the field, realizing the effect of turning over and applying the biochar-based phosphorus solubilizing bacteria agent. When the soil is turned over, the soil is in a loose and turning state, the biochar-based phosphorus solubilizing bacteria agent can be more fully contacted and mixed with the soil, so that the phosphorus solubilizing bacteria can be uniformly distributed in the soil, increasing the contact area with the phosphorus element in the soil, which is beneficial to better play the role of phosphorus solubilizing;

[0056] Further, the two ends of the soil turning rod 55 are symmetrically provided with an insertion block 551, and an insertion slot 552 is formed on the outer circle of the positioning ring plate 54 at equal angles along the circumference, and a threaded hole is formed on one side of the insertion slot 552. A locking bolt 553 is installed at the threaded hole. The insertion block 551 and the soil turning rod 55 can be considered as an integral part. Loosening the locking bolt 553 can adjust the insertion depth of the insertion block 551 relative to the insertion slot 552, that is, the position of each position soil turning rod 55 can be adjusted, and the soil turning depth is synchronously controllable. Different depths of biochar-based phosphorus solubilizing bacteria can be used according to different properties of the soil in the field.

[0057] In another embodiment, referring to Figures 1-6 Figures 1-6The inner side wall of the outer frame 1 is symmetrically provided with a sliding rail 6, a sliding block 60 is arranged in the sliding rail 6, an axle rod 61 and a fixed block 62 are respectively arranged on the side wall of the sliding block 60, a swing arm 63 is rotatably arranged on the axle rod 61, a crank 64 is rotatably connected to the other end of the swing arm 63 through an axle rod, a flat plate 610 is arranged on the side wall of the fixed block 62, and in specific working, the driven driving shaft 42 drives the crank 64 to rotate, the crank 64 drives the swing arm 63 to move after rotating, then the swing arm 63 drives the sliding block 60 to reciprocate in the sliding rail 6, and the fixed block 62 reciprocates with the sliding block 60, so that the flat plate 610 connected with the fixed block 62 is driven to scrape the ploughed soil in the reciprocating process of the fixed block 62, so that the soil is flattened again, and subsequent manual treatment is not needed.

[0058] Meanwhile, a long hole 611 is symmetrically arranged in the inner part of the flat plate 610, an extension plate 613 is arranged on one side of the flat plate 610, and the extension plate 613 and the flat plate 610 are locked through positioning bolts 612 and the long hole 611, the positioning bolts 612 are loosened to adjust the combined length of the extension plate 613 relative to the flat plate 610, and the bottom horizontal height of the extension plate 613 is synchronously adjusted according to the different ploughing depth requirements.

[0059] In addition, the application also provides a red-yellow soil area low-phosphorus paddy field biochar-based phosphorus solubilizing bacterial agent application method, which specifically comprises the following steps:

[0060] S1, device inspection: check whether each component such as the outer frame 1, the connecting head 2, the storage hopper 31 and the driving part 4 is intact, and ensure that the above components are tightly connected, without looseness, damage or blockage. After the inspection is completed, the connecting head 2 is connected to the traction equipment, which is generally an agricultural tractor;

[0061] S2, agent selection and filling: using soil sensors and related detection equipment, the soil acidity and alkalinity, phosphorus content, organic matter content, iron and aluminum oxide content, soil texture and the like of the red-yellow soil area low-phosphorus paddy field are comprehensively detected;

[0062] The detection results are recorded, and the corresponding type of biochar-based phosphorus solubilizing bacterial agent is selected according to the detection results, and the corresponding selection method is as follows:

[0063] 1) Strong acid soil (pH < 5.0): adapt to biochar-based phosphorus solubilizing bacterial agent containing acidophilic phosphorus solubilizing bacteria;

[0064] 2) Acid soil (5.0≤pH < 6.5): suitable for using biochar-based phosphorus solubilizing bacterial agent of ordinary acid-tolerant phosphorus solubilizing bacteria matched with conventional biochar;

[0065] 3) Very low phosphorus soil (available phosphorus <5 mg / kg): it is suitable to select biochar-based phosphorus solubilizing bacteria agent with strong phosphorus solubilizing ability and certain phosphorus enrichment function;

[0066] 4) Low phosphorus soil (5 mg / kg ≤ available phosphorus <10 mg / kg): it is suitable to select conventional biochar-based phosphorus solubilizing bacteria agent with stable phosphorus solubilizing performance;

[0067] The selected biochar-based phosphorus solubilizing bacteria agent is slowly poured into the storage hopper 31, and the filling amount of the biochar-based phosphorus solubilizing bacteria agent in the storage hopper 31 should not exceed 80% of the volume, and the opening of the storage hopper 31 is sealed by the sealing cover;

[0068] S3, application mode selection: according to different categories of fields, one is selected from reciprocating linear application, transverse strip application and spiral application, and the biochar-based phosphorus solubilizing bacteria agent is applied by the opened material hopper 32 driven by the agricultural tractor;

[0069] Specifically:

[0070] If the field shape is regular, the area is large, and the terrain is relatively flat, reciprocating linear application is adopted; that is, starting from one end of the field, uniformly advancing at a predetermined application width and speed, turning around when reaching the other end, and applying again along the adjacent parallel straight line, and so on until the whole field is applied;

[0071] If there is a certain slope in the field, transverse strip application is adopted; that is, the agricultural tractor starts from one side of the field, applies in a straight line in each strip area perpendicular to the long side of the field, moves to the adjacent strip area for continuous application until the whole field is covered;

[0072] If the area is small and the shape is irregular, or there are obstacles in the field, spiral application is adopted; that is, the agricultural tractor starts from the center of the field and applies outward in a spiral route until the whole field is covered;

[0073] S4, anti-caking treatment: during the application of the biochar-based phosphorus solubilizing bacteria agent, the driving part 4 is started to drive the symmetrical stirring rollers 33 in the storage hopper 31 to rotate, so that the biochar-based phosphorus solubilizing bacteria agent in the storage hopper 31 is uniformly shaken;

[0074] S5, subsequent treatment: after the application is completed, the agricultural tractor pulls the outer frame 1 to the edge of the field and empties the remaining biochar-based phosphorus solubilizing bacteria agent in the storage hopper 31;

[0075] If the remaining biochar-based phosphorus solubilizing bacterial agent is more and well preserved, it is collected by sealing bag packaging and stored in a ventilated place for subsequent small amount of supplementary application; if the remaining biochar-based phosphorus solubilizing bacterial agent is less or has been contaminated and deteriorated, it should be transported to a designated open area for deep burial treatment according to the regulations, and cannot be discarded at will;

[0076] Then, the components such as the storage hopper 31 and the application hopper 32 are thoroughly cleaned with clean water to remove the residual bacterial agent and soil.

[0077] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A biochar-based phosphate-solubilizing agent application device for low-phosphorus paddy fields in red and yellow soil areas, comprising an outer frame (1) and a connector (2), characterized in that, The outer frame (1) and the connector (2) are both metal components, which are fixed with high-strength bolts. The connector (2) is used to connect to the traction equipment. A support frame (3) is provided at the center of the outer frame (1). A storage hopper (31) for storing biochar-based phosphorus-solubilizing bacteria is fixedly connected to the support frame (3). A feeding hopper (32) is provided at the bottom of the storage hopper (31). A stirring roller (33) is symmetrically installed inside the storage hopper (31). The two ends of the stirring roller (33) are exposed on the side wall of the storage hopper (31), and gears (34) are concentrically installed on the end face of the rotating shaft. A cross hole (35) is provided on the top of the support frame (3), and a displacement rod (36) is inserted into the cross hole (35). A linkage rod (361) is welded to the bottom of the displacement rod (36), and a drive unit (4) is provided below the linkage rod (361). A T-shaped rod (37) is welded to the top surface of the support frame (3), and a C-shaped plate (38) is installed on the top of the displacement rod (36). The bottom of the C-shaped plate (38) is sleeved on the T-shaped rod (37), and a compression spring (39) is installed on the outer wall of the T-shaped rod (37) and above the bottom of the C-shaped plate (38). The drive unit (4) includes an active drive shaft (41) and a driven drive shaft (42) symmetrically rotated on both sides of the outer frame (1). A drive arm (43) and a driven arm (44) are respectively fixedly installed on the end face of the active drive shaft (41) and the driven drive shaft (42) facing the inside of the outer frame (1). The drive arm (43) and the driven arm (44) are the same in size and shape. A tooth block is provided at the arc of both ends of the drive arm (43) and the driven arm (44). The tooth blocks on the drive arm (43) and the driven arm (44) can mesh with each other. A side plate (45) is fixedly installed at the center position on the same side of the drive arm (43) and the driven arm (44). A pin (451) is provided on the same side of any side plate (45). A linkage arm (46) is installed on the two pins (451) on the same side. The linkage arm (46) is located directly below the linkage rod (361). The active drive shaft (41) has a synchronous pulley (47) concentrically mounted on one end face facing away from the interior of the outer frame (1). The drive motor (48) is mounted on the outer side wall of the outer frame (1) via a motor mounting bracket. The output shaft of the drive motor (48) is connected to the synchronous pulley (47) via a synchronous belt.

2. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 1, characterized in that, Hollow gears (5) are provided at concentric positions on both the active drive shaft (41) and the driven drive shaft (42). The hollow gears (5) are located inside the outer frame (1) and are connected to the drive arm (43) and the driven arm (44) respectively through the crossbar (51). The bottom of the hollow gears (5) is meshed with the first gear shaft (52), and the bottom of the first gear shaft (52) is meshed with the second gear shaft (53). The first gear shaft (52) and the second gear shaft (53) are both installed on the outer frame (1). A positioning ring plate (54) is installed at a concentric position on one side of the second gear shaft (53) through a connecting rod. The diameter of the positioning ring plate (54) is larger than the diameter of the second gear shaft (53). A soil turning rod (55) is provided at equal angles along the circumference between the two opposing positioning ring plates (54) in the same vertical plane.

3. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 2, characterized in that, The two ends of the soil turning rod (55) are symmetrically installed with inserts (551). The slots (552) for installing the inserts (551) are opened at equal angles along the outer circumference of the positioning ring plate (54). A threaded hole is opened on one side of the slot (552), and a locking bolt (553) is installed at the threaded hole.

4. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 1, characterized in that, The inner sidewall of the outer frame (1) is symmetrically equipped with slide rails (6), and a slider (60) is installed inside the slide rail (6). The sidewall of the slider (60) is respectively equipped with a shaft (61) and a fixing block (62). A swing arm (63) is rotatably installed on the shaft (61). The other end of the swing arm (63) is rotatably connected to a crank (64) through the shaft. The other end of the crank (64) is fixedly connected to the driven drive shaft (42). A plate (610) is installed on the sidewall of the fixing block (62).

5. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 4, characterized in that, The plate (610) has symmetrically arranged elongated holes (611) inside. An extension plate (613) is provided on one side of the plate (610). The extension plate (613) and the plate (610) are locked together by a positioning bolt (612) cooperating with the elongated holes (611).

6. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 1, characterized in that, The bottom end face of the linkage rod (361) is welded with a ball head, and the outer surface of the ball head is a smooth surface.

7. The device for applying biochar-based phosphate-solubilizing bacteria to low-phosphorus paddy fields in red and yellow soil areas according to claim 1, characterized in that, The linkage rod (361) is a type of telescopic rod, and its length can be adjusted in the vertical direction.

8. The application device for a biochar-based phosphate-solubilizing agent in low-phosphorus paddy fields in red and yellow soil areas according to claim 1, characterized in that, This includes a method for applying a biochar-based phosphate-solubilizing agent to low-phosphorus paddy fields in red and yellow soil regions, specifically comprising the following steps: S1. Device inspection: Check whether each component such as the outer frame (1), connector (2), storage hopper (31) and drive unit (4) is intact, and ensure that the above components are tightly connected without looseness, damage or blockage; after the inspection is completed, connect the connector (2) to the traction equipment, which is generally an agricultural tractor. S2. Selection and filling of microbial agents: Using soil sensors and related testing equipment, a comprehensive test was conducted on the soil pH, phosphorus content, organic matter content, iron and aluminum oxide content, and soil texture of low-phosphorus paddy fields in the red and yellow soil area. Record the test results and select the corresponding type of biochar-based phosphate-solubilizing bacteria agent based on the test results; The selected biochar-based phosphate-solubilizing agent is slowly poured into the storage hopper (31). The amount of biochar-based phosphate-solubilizing agent in the storage hopper (31) should not exceed 80% of the volume. The opening of the storage hopper (31) is sealed with a sealing cap. S3. Application method selection: Select one of reciprocating linear application, transverse strip application and spiral application according to the different types of fields, and apply biochar-based phosphorus-solubilizing agent by driving the open application hopper (32) with an agricultural tractor; S4, Anti-caking treatment: During the application of biochar-based phosphorus-solubilizing agent, the drive unit (4) is activated, and the drive unit (4) drives the symmetrically distributed stirring rollers (33) in the storage hopper (31) to rotate, so that the biochar-based phosphorus-solubilizing agent in the storage hopper (31) shakes evenly. S5. Subsequent treatment: After the application is completed, the agricultural tractor pulls the outer frame (1) to an open space at the edge of the field to empty the remaining biochar-based phosphate-solubilizing agent in the storage hopper (31); If there is a large amount of remaining biochar-based phosphate-solubilizing agent and it is well preserved, it should be collected in sealed bags and stored in a ventilated place for subsequent small-scale supplementary application. If there is a small amount of remaining biochar-based phosphate-solubilizing agent or it has been contaminated or deteriorated, it should be transported to a designated open area for deep burial in accordance with regulations and should not be discarded at will. Then, thoroughly clean the storage hopper (31) and feeding hopper (32) with clean water to remove residual fungicide and soil.

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