CN116458292A - Double-material fertilizer distributor - Google Patents

Abstract

The invention discloses a dual-material fertilizer applicator, which comprises a frame and a rotary tiller installed on the frame. Two fertilizer boxes for containing fertilizers and a feeding device for mixing the two kinds of fertilizers and dropping them on the soil are installed on the frame. The fertilizer box is provided with an outlet for discharging the fertilizer. The double-material fertilizer applicator also includes two fertilizer conveying devices for respectively correspondingly transporting the fertilizer discharged from the outlets of the two fertilizer boxes to the feeding device. The dual-material fertilizer applicator has the advantages of applying organic fertilizer and lime at the same time, high fertilization efficiency and high fertilization quality.

Description

A dual-material fertilizer applicator

technical field

The invention relates to the technical field of agricultural machinery, in particular to a double-material fertilizer applicator.

Background technique

Peanut is one of my country's four major oil crops (rape, peanut, soybean, sesame), its planting area is second only to rapeseed, and its total output accounts for more than 50% of the national oil crops. Since 1993, my country's total peanut output has been ranked first in the world, accounting for more than 35% of the world's total output.

At present, the southern peanut fertilization usually uses a large amount of single fertilizer, such as phosphorus fertilizer, for a long time. This unscientific fertilization method is likely to lead to soil acidification. Therefore, in addition to the application of phosphorus fertilizer, quicklime needs to be applied to neutralize the pH of the soil, which will also lead to a substantial increase in labor costs. On the other hand, organic fertilizers are complete in nutrients, which can improve soil fertility, improve soil structure, and improve the quality of agricultural products. However, the content of nitrogen, phosphorus, and potassium is relatively small, so the amount of each application is relatively large, and the application of organic fertilizers in my country is still in the stage of manual application. The process is generally transported to the field by a cart to form a small pile, and then spread with a spade, or spread on the cart as you go. This method not only has low production efficiency, but also spreads fertilizer unevenly, with heavy workload and harsh working conditions.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and provide a dual-material fertilizer applicator capable of applying organic fertilizer and lime at the same time, with high fertilization efficiency and high fertilization quality.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A double-material fertilizer applicator, comprising a frame and a rotary tiller installed on the frame, two fertilizer boxes for containing fertilizers and a feeding device for mixing two kinds of fertilizers and spraying them on the soil are installed on the frame, the fertilizer box is provided with an outlet for discharging fertilizer, and the double-material fertilizer applicator also includes two fertilizer conveying devices for respectively correspondingly transporting the fertilizer discharged from the outlets of the two fertilizer boxes to the feeding device.

As a further improvement of the above technical solution:

The fertilizer conveying device includes a conveying belt and a belt drive assembly that drives the conveying belt to run. The discharge port of the fertilizer box is located directly above the conveying belt of the corresponding fertilizer conveying device, and there is a gap for fertilizer to pass between the discharge port of each fertilizer case and the conveying surface of the conveying belt of the corresponding fertilizer conveying device that carries and conveys fertilizer.

A gap control device for controlling the size of the gap is provided at one end of each fertilizer box near the discharge port.

The gap control device includes an adjustment plate, which is installed on the fertilizer box through a height adjustment mechanism and can change the vertical distance between the adjustment plate and the corresponding conveying belt by adjusting the installation height.

The height adjustment mechanism includes an adjustment rack, an adjustment gear and an adjustment shaft. The two ends of the adjustment shaft are connected to the fertilizer box in rotation. The adjustment gear is fixedly connected to the adjustment shaft. The adjustment rack is fixedly connected to the adjustment plate. The limiting plate is correspondingly provided with a plurality of through slots, and the bolt passes through one of the through slots and is threadedly connected with the threaded hole and presses the limiting plate on the fertilizer box. The end of the adjusting shaft close to the limiting plate is also fixedly connected with an adjusting handwheel for rotating the adjusting shaft.

The fertilizer box includes two side-by-side material box bodies arranged at intervals, the belt drive assembly includes a driving shaft and a driven shaft, and the conveying belt includes two sub-belts for transporting the fertilizer in the two material box bodies respectively. On the first main sub-shaft and the first sub-sub-shaft, another sub-belt is wound on the second main sub-shaft and the second sub-sub-shaft.

The inside of the fertilizer box is provided with a fertilizer stirring device for stirring the fertilizer to prevent the fertilizer from hardening.

The fertilizer stirring device includes a fertilizer stirring roller and a plurality of stirring rods fixedly connected to the fertilizer stirring roller and extending radially outward from the fertilizer stirring roller. The plurality of stirring rods are arranged at intervals along the axial direction of the fertilizer stirring roller, and the fertilizer stirring roller is connected to the driving end of the fertilizer conveying device through a transmission mechanism.

The material dropping device includes a body installed on the fertilizer box, the body is provided with a fertilizer dropping channel penetrating up and down, and the output ends of the two fertilizer conveying devices are located above the fertilizer dropping channel.

More than one flexible chain is arranged in the fertilizer falling channel, one end of the flexible chain is connected to the body, and the other end of the flexible chain is suspended in the air.

Compared with the prior art, the advantage of the present invention is that the fertilizers contained in the two fertilizer boxes of the double-material fertilizer applicator of the present invention can respectively reach the corresponding fertilizer conveying device from their outlets, and under the action of the fertilizer conveying device, the fertilizers in the two fertilizer boxes are all transferred to the feeding device, and the fertilizers in the two fertilizer boxes can be mixed and then scattered on the soil surface under the action of the feeding device. Uniformity, avoiding damage to crops caused by uneven fertilization. The dual-material fertilizer applicator can apply two different fertilizers at the same time. For example, put organic fertilizer and lime into two fertilizer boxes, and then apply organic fertilizer and lime at the same time. Compared with the traditional method of manual application of organic fertilizer, mechanized fertilization has high efficiency and uniform fertilization, which can improve the quality of fertilization and reduce labor costs.

Description of drawings

Fig. 1 is a front view three-dimensional structural schematic diagram of a dual-material fertilizer applicator.

Fig. 2 is a rear view three-dimensional structural schematic diagram of a dual-material fertilizer applicator.

Fig. 3 is a schematic cross-sectional structure diagram of the first fertilizer tank and the second fertilizer tank.

Fig. 4 is a schematic diagram of the three-dimensional structure of the blanking device.

Fig. 5 is a schematic cross-sectional structural view of the blanking device.

FIG. 6 is a schematic diagram of an enlarged structure at point A in FIG. 1 .

illustration:

1. Frame; 2. Rotary Tiller; 21. Gearbox; 22. First sprocket chain; 23. Reducer; 24. Drive shaft; 3. Fertilizer box; 31. Material box body; 4. Blanking device; 41. Body; 42. Fertilizer drop channel; 43. Flexible chain; 5. Fertilizer transmission device; 51. Conveyor belt; 52. Drive shaft; 53. Driven shaft; 6, the fourth sprocket chain; 57, the fifth sprocket chain; 6, gap control device; 61, adjusting plate; 62, adjusting rack; 63, adjusting gear; 64, adjusting shaft; 65, limit plate; 66, bolt; 67, adjusting handwheel;

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 6, the dual-material fertilizer spreader of this embodiment includes a frame 1 and a rotary tiller 2 installed on the frame 1. The dual-material fertilizer spreader is hung on the three-point suspension of the tractor, and the rear power output shaft of the tractor is connected to the power input shaft of the reduction box 21 of the rotary tiller 2 through a universal joint. , and then power is transmitted to each device of the double-material fertilizer spreader through the transmission shaft 24. Two fertilizer boxes 3 for containing fertilizers and a feeding device 4 for mixing the two kinds of fertilizers and spreading them on the soil are installed on the frame 1. Different fertilizers can be placed in the two fertilizer boxes 3 according to fertilization requirements. The fertilizer box 3 is provided with a discharge port for discharging fertilizers. Material delivery device 5. The fertilizers contained in the two fertilizer boxes 3 can reach the corresponding fertilizer conveying device 5 from their outlets respectively. Under the action of the fertilizer conveying device 5, the fertilizers in the two fertilizer boxes 3 are all transferred to the feeding device 4. Under the action of the feeding device 4, the fertilizers in the two fertilizer boxes 3 can be mixed and then sprinkled on the soil surface. The dual-material fertilizer applicator can apply two different fertilizers at the same time. For example, put the organic fertilizer and lime into two fertilizer boxes 3, and then apply the organic fertilizer and lime at the same time. Compared with the traditional method of artificially applying organic fertilizer, mechanized fertilization has high efficiency and uniform fertilization, which can improve the quality of fertilization and reduce labor costs.

In this embodiment, the fertilizer conveying device 5 includes a conveyor belt 51 and a belt drive assembly that drives the conveyor belt 51 to run. The outlet of the fertilizer box 3 is located directly above the conveyor belt 51 of the corresponding fertilizer conveyor 5, which is beneficial for the fertilizer in the fertilizer box 3 to reach the conveyor belt 51 from the outlet, and there is a gap for fertilizer to pass between the outlet of each fertilizer box 3 and the conveying surface of the conveyor belt 51 of the corresponding fertilizer conveyor 5 that carries and transports the fertilizer. When the conveyor belt 51 runs under the action of the belt drive assembly, the fertilizer in the fertilizer box 3 can be transported to the blanking device 4 through the gap along with the conveyor belt 51 , so that the fertilizer in the fertilizer box 3 is transported to the blanking device 4 . Preferably, two fertilizer boxes 3 are arranged front and back along the traveling direction of the dual-material fertilizer applicator, and two corresponding fertilizer conveying devices 5 are arranged up and down. Preferably, the fertilizer box 3 includes four side panels, which are sequentially connected and combined to form the main body of the fertilizer box 3. The upper end of the fertilizer box 3 is provided with a flip cover, and the discharge port is opened at the lower end. The fertilizer box 3 also includes two slant plates fixed on opposite sides of the interior of the fertilizer box 3. The slant plates are bent toward the lower side of the fertilizer box 3 to prevent fertilizer leakage.

In this embodiment, each fertilizer bin 3 is provided with a gap control device 6 for controlling the size of the gap at one end close to the discharge port. The size of the gap is controlled by setting the gap control device 6, that is, the amount of fertilizer delivered from the gap can be controlled, and the amount of fertilizer can be limited according to the fertilization demand. Cooperating with the two fertilizer conveying devices 5, the fertilizer can be discharged quantitatively and at a constant speed.

In this embodiment, the gap control device 6 includes an adjustment plate 61, which is installed on the fertilizer box 3 through a height adjustment mechanism and can change the vertical distance between the adjustment plate 61 and the corresponding conveyor belt 51 by adjusting the installation height. That is to say, by changing the installation height of the adjusting plate 61, the vertical distance between the adjusting plate 61 and the plane carrying the fertilizer transported by the corresponding conveyor belt 51 can be changed, so as to change the size of the discharge gap, and the structure is simple.

In this embodiment, the height adjustment mechanism includes an adjustment rack 62, an adjustment gear 63 and an adjustment shaft 64. The two ends of the adjustment shaft 64 are rotatably connected to the fertilizer box 3. The adjustment rack 62 is vertically arranged. The adjustment gear 63 is fixed on the adjustment shaft 64. The adjustment rack 62 is fixed on the adjustment plate 61. The adjusting gear 63 fixedly connected with 64 rotates, and the adjusting gear 63 rotates to make the adjusting rack 62 meshed with the adjusting gear 63 rise or fall, thereby driving the adjusting plate 61 affixed to the adjusting rack 62 to rise or fall. The stability of the amount of fertilizer delivered helps to spread the fertilizer evenly. The adjustment plate 61 is controlled by adjusting the combined structure of the rack 62, the adjustment gear 63 and the adjustment shaft 64. The structure is simple and easy to adjust, and the adjustment plate 61 can be stabilized at any position within the adjustment range, so that the fertilizer output can be more flexibly limited to meet different fertilizer output requirements. The limit assembly includes a limit plate 65 and a bolt 66. One end of the adjustment shaft 64 passes through the fertilizer box 3 and is fixedly connected to the limit plate 65. The fertilizer box 3 is provided with a threaded hole cooperating with the bolt 66. The limit plate 65 is correspondingly provided with a plurality of through grooves, and the plurality of through grooves are arranged at intervals around the rotation direction of the adjustment shaft 64 to form an arc. An adjustment hand wheel 67 for rotating the adjustment shaft 64 is also fixedly connected to facilitate manual rotation of the adjustment shaft 64, thereby facilitating use. After determining the position of the adjusting plate 61 by rotating the adjusting shaft 64, because the limiting plate 65 is fixedly connected with the adjusting shaft 64, the bolt 66 is threaded through the through groove and the threaded hole, so that the limiting plate 65 can be fixed on the fertilizer box 3.

In this embodiment, the fertilizer box 3 includes two material box bodies 31 arranged side by side and at intervals. The belt drive assembly includes a driving shaft 52 and a driven shaft 53. The driving shaft 52 and the driven shaft 53 all cross the left and right sides of the fertilizer box 3. Convey the sub-belts for the fertilizer in the two material box bodies 31. The driving shaft 52 includes a first main sub-shaft and a second main sub-shaft. The driven shaft 53 includes a first sub-sub-shaft and a second sub-axis. The axial length of the driven shaft 53 is too long to cause excessive flexibility. Preferably, the first connecting mechanism is the first universal joint, and the two connecting ends of the first universal joint are respectively connected with the first main sub-axis and the second main sub-shaft. The belt drive assembly also includes a second sprocket chain 54 and a third sprocket chain 55. The second sprocket chain 54 includes driving wheel one, driven wheel one and chain one. The third sprocket chain 55 includes driving wheel two, driven wheel two and chain two. The second sprocket chain 54 is used to connect the drive shaft 24 and the fertilizer delivery device 5 corresponding to the fertilizer box 3 positioned at the rear end of the frame 1. The driving shaft 52 of the fertilizer conveying device 5 is fixedly connected, and one end of the chain one is wound on the driving wheel one, and the other end of the chain one is wound on the driven wheel one. After the power is transmitted to the transmission shaft 24, the motion is transmitted to the driving shaft 52 through the second sprocket chain 54, and the third sprocket chain 55 is used to connect the driving ends of the two fertilizer conveying devices 5. 52 is fixedly connected, and one end of the chain two is wound on the driving wheel two, and the other end of the chain two is wound on the driven wheel two, and the motion is transmitted to another driving shaft 52 by the third sprocket chain 55 . The drive shaft 52 is provided with a fourth sprocket chain 56 and a fifth sprocket chain 57 at one end away from the second sprocket chain 54 and the third sprocket chain 55. The fourth sprocket chain 56 includes a driving wheel 3, a driven wheel 3 and a chain 3, which are used to connect the driving shaft 52 and the driven shaft 53 of the fertilizer conveying device 5 located below. The other end of bar three is wound on driven wheel 3, and the fifth sprocket chain 57 comprises driving wheel 4, driven wheel 4 and chain 4, is used to connect the driving shaft 52 and driven shaft 53 of the fertilizer conveying device 5 positioned above, driving wheel 4, driven wheel 4 are fixedly connected with driving shaft 52 and driven shaft 53 respectively, and one end of chain 4 is wound on driving wheel 4, and the other end of chain 4 is wound on driven wheel 4, can avoid conveying belt 51 to slip during motion, Ensure the speed synchronization between the conveyor belt 51 and each shaft. The fertilizer box 3 includes two feed box bodies 31 arranged side by side and arranged at intervals, which can avoid the height of the whole machine from being too high and lower the center of gravity of the machine while ensuring the load capacity of the machine tool, thereby reducing the risk of the whole machine tipping over, and can increase the spreading range of a single fertilization and improve the fertilization efficiency.

In this embodiment, the fertilizer box 3 is provided with a fertilizer stirring device 7 for stirring the fertilizer to prevent the fertilizer from hardening. The fertilizer stirring device 7 can stir the fertilizer to prevent the fertilizer from being hardened in the fertilizer box 3, so that the fertilizer can better reach the fertilizer delivery device 5 from the discharge port, thereby ensuring that the fertilizer in the fertilizer box 3 can be smoothly transported by the fertilizer delivery device 5, ensuring the stability of fertilization.

In this embodiment, the fertilizer stirring device 7 includes a fertilizer stirring roller 71 and a plurality of stirring rods 72 fixedly connected to the fertilizer stirring roller 71 and extending radially outward from the fertilizer stirring roller 71. The fertilizer stirring roller 71 crosses the left and right sides of the fertilizer tank 3, and the two ends of the fertilizer stirring roller 71 are connected to the fertilizer tank 3 in rotation. It is connected with the driving end of the fertilizer conveying device 5 through a transmission mechanism. The driving end of the transmission mechanism and the fertilizer conveying device 5 realizes linkage. Under the effect of the transmission mechanism, the fertilizer stirring roller 71 rotates, and the stirring rod 72 fixedly connected with the fertilizer stirring roller 71 rotates around the fertilizer stirring roller 71, thereby being able to stir the fertilizer in the fertilizer tank 3 and prevent the fertilizer from hardening. Transmission mechanism comprises the 6th sprocket chain 73 and the 7th sprocket chain 74, the 6th sprocket chain 73 comprises driving wheel 5, driven wheel 5 and chain 5, and driving wheel 5 is fixedly connected with the driving shaft 52 of the fertilizer conveying device 5 above, driven wheel 5 is fixedly connected with fertilizer stirring roller 71 in the fertilizer box 3 at the rear, and one end of chain 5 is wound on driving wheel 5, and the other end of chain 5 is wound on driven wheel 5, and driving shaft 52 rotates, and on the 6th sprocket Under the action of the chain 73, the fat-stirring roller 71 located at the rear is rotated. The seventh sprocket chain 74 is connected to an end of the fat-stirring roller 71 away from the sixth sprocket chain 73. On the wheel six, the other end of the chain six is wound on the driven wheel six. Preferably, the fat-stirring roller 71 is a hollow roller, and a fat-stirring shaft is fixed inside the fat-stirring roller 71, and the fat-stirring roller 71 is connected with a transmission mechanism through the fat-stirring shaft.

When the fertilizer box 3 includes two material box bodies 31, the fertilizer stirring roller 71 includes two fertilizer stirring sub-rollers, which are connected by universal joints, and each material box body 31 is equipped with a plurality of stirring rods 72 correspondingly.

In this embodiment, the feeding device 4 includes a body 41 installed on the fertilizer tank 3 . The body 41 is provided with a fertilizer dropping channel 42 penetrating up and down. The output ends of the two fertilizer conveying devices 5 are located above the fertilizer dropping channel 42 . In this embodiment, the main body 41 includes a plurality of side plates, which form a fertilizer falling channel 42 around the multiple side plates. The fertilizer conveying device 5 is arranged horizontally, and is transported from the rear end of the frame 1 to the front end of the frame 1 along the traveling direction of the dual-material fertilizer applicator.

In this embodiment, more than one flexible chain 43 is provided in the fertilizer dropping channel 42 , one end of the flexible chain 43 is connected to the body 41 , and the other end of the flexible chain 43 is suspended. The body 41 also includes a connecting shaft, the two ends of the connecting shaft are fixed on the body 41, and one end of the flexible chain 43 is fixedly connected on the connecting shaft. When the whole machine is moving forward, due to the vibration of the implements in the field, the flexible chain 43 can continuously swing along with the whole machine in the manure falling channel 42, so as to avoid the fertilizer from being hardened and blocked in the manure falling channel 42, and ensure the stability of fertilization.

When the fertilizer box 3 includes two material box bodies 31, a blanking device 4 is provided correspondingly in front of each material box body 31, and each material box body 31 is provided with a discharge port, and a gap control device 6 is correspondingly provided at one end near the discharge port.

The specific process and principle of this dual-material fertilizer applicator is: under the action of the first sprocket chain 22 and the belt drive assembly, the fertilizer conveying device 5 and the fertilizer stirring device 7 are driven to move, and the fertilizer is transported from the two fertilizer boxes 3 to the feeding device 4, and the agitating rod 72 is rotated in the fertilizer box 3. Before work, the height of the limiting plate 65 is adjusted by rotating the handwheel 67, and the height of the limiting plate 65 is kept constant through the limiting assembly, thereby limiting the amount of fertilizer. The two fertilizers pass through the feeding device. 4 After mixing, it finally falls to the soil surface.

The above descriptions are only preferred implementations of the present invention, and the scope of protection of the present invention is not limited to the above examples. For those skilled in the art, improvements and transformations obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. A dual-material fertilizer spreader, comprising a frame (1) and a rotary tiller (2) installed on the frame (1), characterized in that: two fertilizer boxes (3) for containing fertilizers and a feeding device (4) for mixing the two kinds of fertilizers and sprinkling them on the soil are installed on the frame (1), the fertilizer box (3) is provided with a discharge port for discharging fertilizer, and the dual-material fertilizer spreader also includes two discharge ports for correspondingly discharging the two fertilizer boxes (3) respectively The fertilizer is delivered to the two fertilizer conveyors (5) of the dosing device (4). 2. The double-material fertilizer applicator according to claim 1, characterized in that: the fertilizer delivery device (5) includes a conveyor belt (51) and a belt drive assembly that drives the conveyor belt (51) to run, the discharge port of the fertilizer box (3) is located directly above the conveyor belt (51) of the corresponding fertilizer conveyor (5), and there is a gap between the discharge port of each fertilizer box (3) and the conveyor belt (51) of the corresponding fertilizer conveyor (5) to carry and transport fertilizer. through the gap. 3. The dual-material fertilizer applicator according to claim 2, characterized in that: a gap control device (6) for controlling the size of the gap is provided at one end of each fertilizer box (3) close to the discharge port. 4. The double-material fertilizer applicator according to claim 3, characterized in that: the gap control device (6) includes an adjustment plate (61), and the adjustment plate (61) is installed on the fertilizer tank (3) by a height adjustment mechanism and can change the vertical distance with the corresponding conveyor belt (51) by adjusting the installation height. 5. The double-material fertilizer applicator according to claim 4, characterized in that: the height adjustment mechanism includes an adjustment rack (62), an adjustment gear (63) and an adjustment shaft (64), the two ends of the adjustment shaft (64) are rotatably connected to the fertilizer box (3), the adjustment gear (63) is fixed on the adjustment shaft (64), the adjustment rack (62) is fixed on the adjustment plate (61), and the adjustment gear (63) and the adjustment rack (62) are mutually meshed for transmission One end of the adjustment shaft (64) is also provided with a limit assembly for fixing the rotational position of the adjustment shaft (64). The limit assembly includes a limit plate (65) and a bolt (66). One end of the adjustment shaft (64) passes through the fertilizer box (3) and is fixedly connected to the limit plate (65). The fertilizer box (3) is provided with a threaded hole that matches the bolt (66). The through groove is threadedly connected with the threaded hole and the limiting plate (65) is pressed on the fertilizer box (3), and one end of the regulating shaft (64) near the limiting plate (65) is also affixed with an adjusting handwheel (67) for rotating the regulating shaft (64). 6. The dual-material fertilizer applicator according to claim 2, characterized in that: the fertilizer box (3) comprises two material box bodies (31) arranged side by side and at intervals, the belt drive assembly comprises a driving shaft (52) and a driven shaft (53), the conveying belt (51) comprises two sub-belts for transporting the fertilizer in the two material box bodies (31) respectively, the driving shaft (52) comprises a first main sub-shaft and a second main sub-shaft, and the driven shaft (53) comprises a first sub-axis and a driven shaft (53). The second slave sub-shaft, the first main sub-shaft and the second main sub-shaft are connected through the first connecting mechanism for synchronous rotation, the first sub-sub-shaft and the second sub-sub-shaft are connected through the second connecting mechanism for synchronous rotation, wherein one sub-belt is wound on the first main sub-shaft and the first sub-sub-shaft, and the other sub-belt is wound on the second main sub-shaft and the second sub-sub-shaft. 7. The dual-material fertilizer applicator according to claim 1, characterized in that: the fertilizer tank (3) is provided with a fertilizer stirring device (7) for stirring the fertilizer to prevent the fertilizer from hardening. 8. The dual-material fertilizer applicator according to claim 7, characterized in that: the fertilizer stirring device (7) comprises a fertilizer stirring roller (71) and a plurality of stirring rods (72) fixedly connected to the fertilizer stirring roller (71) and extending radially outward from the fertilizer stirring roller (71), and a plurality of stirring rods (72) are arranged at intervals along the axial direction of the fertilizer stirring roller (71), and the fertilizer stirring roller (71) is connected to the driving end of the fertilizer delivery device (5) through a transmission mechanism. 9. The dual-material fertilizer applicator according to any one of claims 1 to 8, characterized in that: the dropping device (4) includes a body (41) installed on the fertilizer tank (3), the body (41) is provided with a fertilizer dropping channel (42) that penetrates up and down, and the output ends of the two fertilizer conveying devices (5) are located above the fertilizer dropping channel (42). 10. The dual-material fertilizer applicator according to claim 9, characterized in that: more than one flexible chain (43) is provided in the fertilizer falling channel (42), one end of the flexible chain (43) is connected to the body (41), and the other end of the flexible chain (43) is suspended.