JP2018093833A - Fertilization working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilization working machine for controlling a fertilizer application amount according to a fertility degree detected by a fertility degree detection sensor for detecting a fertility degree of soil, which can control a fertilizer application amount delivered from a fertilizer tank by simpler control.SOLUTION: The fertilization working machine includes a travelling machine body 3 supported by front and rear wheels 1 and 2, a fertilizer tank 41 for pooling a paste fertilizer in a pasty state, a fertilization pump 42 for delivering the pasty fertilizer in the fertilizer tank 41, a motor 45 for driving the fertilization pump 42, a fertilization nozzle 43 for discharging the pasty fertilizer delivered by the fertilization pump 42 to a soil side, a fertility degree detection sensor 46 for detecting a fertility degree of soil, and a control part 50 for controlling a fertilizer application amount. The control part 50 is configured so as to adjust the amount of the pasty fertilizer delivered by the fertilization pump 42 in a stepless manner according to the fertility degree in a farm field detected by the fertility degree detection sensor 46.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fertilizer application machine including a control unit that controls the amount of fertilization according to fertility.

  A traveling machine supported by the front and rear wheels, a fertilizer tank for storing fertilizer, a fertilizer pump for feeding fertilizer in the fertilizer tank, a motor for driving the fertilizer pump, and fertilizer sent by the fertilizer pump A fertilization nozzle that discharges to the side, a fertility detection sensor that detects the fertility of the soil, and a control unit that controls the amount of fertilization, and depending on the fertility in the field detected by the fertility detection sensor The fertilizer application machine of patent document 1 which adjusts quantity is conventionally well-known.

Japanese Patent No. 5704293

  According to the transplanter of the above-mentioned document, sensors are provided for detecting soil mud depth, soil mud hardness, and electrical conductivity as soil characteristics, and delivery is performed based on values detected by the sensors. By controlling the means, it is possible to automatically change the fertilization amount according to the soil characteristics, but when fertilizing granular fertilizer or liquid fertilizer, if the distance between the feeding means and the fertilization nozzle is large There is a problem that it is necessary to consider the time required for the fertilizer to be sent from the feeding means to the fertilization nozzle and the traveling speed, and the adjustment of the fertilizer amount by the control of the feeding means becomes complicated.

  The present invention provides a fertilizer application machine that controls fertilization amount in accordance with the fertility detected by a fertility detection sensor that detects soil fertility. The object is to provide a fertilizer machine that can be controlled.

  In order to solve the above problems, first, the traveling machine body 3 supported by the front and rear wheels 1, the fertilizer tank 41 for storing the paste-like paste fertilizer, and the fertilizer for feeding the paste fertilizer in the fertilizer tank 41 A pump 42, a motor 45 that drives the fertilizer pump 42, a fertilizer nozzle 43 that discharges the paste fertilizer delivered by the fertilizer pump 42 to the soil side, a fertility detection sensor 46 that detects the fertility of the soil, A control unit 50 that controls the amount of fertilizer applied. The control unit 50 controls the amount of paste fertilizer delivered by the fertilizer pump 42 according to the fertility in the field detected by the fertility detection sensor 46. It is characterized by being adjustable in stages.

  Secondly, the planting work machine 6 provided so as to be able to move up and down behind the traveling machine body 3 scrapes off the seedlings placed on the seedling placing table 18 of the planting work machine 6 and transplants them into the field. And a ground leveling work machine 7 that is disposed in front of the planting part 21 and performs leveling work on the field, and the fertility detection sensor 26 is attached to the leveling work machine 7. Yes.

  Thirdly, the planting work machine 6 provided so as to be able to move up and down behind the traveling machine body 3 extends in the left-right direction for receiving the lower end side of the seedling placed on the seedling placing stand 18 inclined downward toward the rear. The apron 19 is provided, and a rotating member 68 supported so as to be vertically rotatable via support brackets 67 provided on both right and left ends of the apron 19, and the rotating member 68 is rotated upward. The guard posture for guarding the left and right outer sides of the apron 19 and the stand posture that functions as a stand that is rotated downward and maintains the non-grounding state of the planting work machine. , And is attached to the support bracket 67.

  The control unit controls the motor that drives the fertilizer pump that sends out paste fertilizer, and the amount of paste fertilizer to be fertilized can be adjusted steplessly, thereby detecting fertility detection of soil fertility It is possible to adjust the fertilization amount steplessly according to the fertility detected by the sensor, and by using the paste fertilizer as the fertilizer to be applied to the soil, the paste fertilizer with controlled discharge amount has good responsiveness, Since it is smoothly discharged from the fertilization nozzle, the amount of fertilization can be controlled more easily and accurately.

  The planting work machine provided so as to be able to move up and down behind the traveling machine body scrapes off the seedlings placed on the seedling platform of the planting work machine and plantes them on a farm field, and And a leveling work machine that is disposed in front of the attachment section and performs leveling work on the field, and according to the fertilizer detection sensor attached to the leveling work machine, the fertilizer detection sensor is interlocked with the elevation control of the planting work machine. Therefore, when detecting the fertility at a certain field depth, even if the depth of immersion of the leveling rotor into the field may be changed by adjusting the planting depth, the leveling rotor and fertility detection sensor Since the relative height of the soil does not change, the fertility of the field depth that is not agitated by the leveling rotor can be detected, so that a more accurate fertility can be detected. In addition, since the fertility detection sensor can be arranged in the vicinity of the front side of the fertilization position, the fertilizer whose fertilizer amount has been smoothly changed based on the value detected by the fertilizer detection sensor is directed to the place where fertilizer is applied. It can be sent out efficiently.

  In addition, the planting work machine provided so as to be able to move up and down behind the traveling machine body includes an apron extending in the left-right direction for receiving the lower end side of the seedling placed on the seedling placing table inclined downward toward the rear. A rotating member supported so as to be vertically rotatable via support brackets provided on both right and left ends of the apron, and the rotating member is rotated upward to cover the left and right outer sides of the apron. And a stand posture that functions as a stand that is rotated downward and maintains the non-grounding state of the planting work machine, and the fertility detection sensor is attached to the support bracket. In addition, the fertility detection sensor can be arranged by efficiently using the empty space on both the left and right sides of the planting work machine, and the fertility detection sensor is protected by the movable member switched to the stand posture. The failure or the like due to the degree detecting sensor is grounded efficiently prevented.

1 is an overall side view of a riding rice transplanter to which the present invention is applied. It is the principal part side view which showed the planting work machine. It is the conceptual diagram which showed the structure of the fertilizer application apparatus. (A) And (B) is the model figure which showed the detection aspect of the cultivation board depth by a cultivation board depth detection means. It is a block diagram of a control part. It is the principal part side view which showed the planting work machine in another Example. It is the principal part rear view which showed the planting work machine in another Example.

  FIG. 1 is an overall side view of a riding rice transplanter to which the present invention is applied, FIG. 2 is a side view of an essential part showing a planting work machine, and FIG. 3 is a conceptual diagram showing a configuration of a fertilizer application apparatus. is there. The riding rice transplanter includes a traveling machine body 3 having a front wheel 1 and a rear wheel 2, a planting work machine 6 connected to a rear portion of the traveling machine body 3 through a lifting link 4, and the planting work. The horizontal leveling work machine 7 arrange | positioned between the machine 6 and the rear-wheel 2 and the fertilizer application apparatus 8 which applies fertilizer of paste-form fertilizer (henceforth, paste fertilizer) are provided in the agricultural field side.

  The traveling machine body 3 includes a bonnet 9 disposed on the front side, and a control unit 12 on which various operation tools are disposed behind the bonnet 9. The control unit 12 includes a seat 13 on which an operator is seated, a floor step 14 that forms a floor surface, and a rear step formed on the left and right sides of the control unit 12 that is one step higher than the floor step 14 and is used when seedlings are supplied. Step 16 is provided.

  The planting work machine 6 is a horizontal frame 17 that is a rectangular columnar member in the left-right direction and forms a main frame, and is inclined upward from the vicinity of the rear side of the horizontal frame 17 to the front, and seedlings are placed on the back side. A seedling stage 18 to be placed, a planting part 21 for scraping seedlings from an apron 19 extending in the left-right direction that supports mat seedlings at the lower end side of the seedling stage 18 and planting them in a farm field, and a seedling stage And a float 22 in the front-rear direction that is arranged below the platform 18 and is grounded to the farm scene X2 (sliding on the rice field).

  The planting portion 21 extends in the front-rear direction and is supported by and fixed to the side of the horizontal frame 17, and a planter case 23 that is rotatably driven around a left-right axis positioned at the rear end portion of the planter case 23. The rotary case 24 is supported on the side, and the planting claws 26 are supported on both ends of the rotary case 24. By arranging a plurality of the planting claws 26 in the left-right direction, a plurality of seedlings can be planted at a time.

  A plurality (three in the illustrated example) of the floats 22 are provided side by side on the lower side of the planter case 23. Each float 22 is supported such that the front end side can swing up and down, and a float support arm 27 is connected to the rear end side of each float 22 via a rotation shaft. A planting depth adjustment lever 28 is connected to the float support arm 27, and the float 22 is displaced in the vertical direction in conjunction with the back-and-forth swing operation of the planting depth adjustment lever 28. The attachment depth can be adjusted (see FIGS. 1 to 3).

  More specifically, when the planting depth adjusting lever 28 is operated to swing upward, the float 22 descends with respect to the planting unit 21, so that the planting unit 21 rises with respect to the field scene. Then, when the planting depth becomes shallow and the planting depth adjusting lever 28 is operated to swing downward, the float 22 rises with respect to the planting unit 21, so that the planting unit 21 moves relative to the field scene. It is configured to descend and increase the planting depth. At this time, a planting depth sensor (planting depth detecting means) 30 including a potentiometer for detecting the operation position of the planting depth adjusting lever 28 is provided, and the planting depth by the planting work machine 6 is provided. Can be detected.

  Of the plurality of floats 22 in the left-right direction, the center float 22A disposed at the center functions as a sensing body that senses earth pressure from the farm scene. Therefore, the raising / lowering position of the planting work machine 6 can be controlled to a height at which the center float 22A senses that it is in contact with the farm scene X2 with a predetermined earth pressure, in other words, a planting position where the planting work is performed. it can.

  The leveling work machine 7 is suspended by a stay 31 on the front side of the float 22 and extends in the left-right direction and supported so as to be rotationally driven, and above and behind the leveling rotor 32. And the cover body 33 that covers the vehicle, and is rotationally driven by the engine power transmitted from the traveling machine body 3 side to level the farm scene (leveling work).

  Incidentally, the planting work machine 6 is provided with a lift angle potentiometer 35 for detecting the lift angle of the elevating link 4, and the planting work machine for the traveling machine body 3 is detected by the lift angle detected by the lift angle potentiometer 35. 6 lift positions can be detected.

  According to this configuration, the riding rice transplanter causes the traveling machine body 3 to travel by the front and rear wheels 1 and 2 while driving the planting portion 21 in a state where the planting work machine 6 is lowered to the planting position. Thus, planting work in the field can be performed. At this time, it is comprised so that the fertilization operation | work by the said fertilizer application apparatus 8 can be performed simultaneously. The fertilizer application 8 will be described in detail below.

  The fertilizer application device 8 is disposed on the left and right sides of the hood 9 of the traveling machine body 3 and stores a fertilizer tank 41 for storing paste fertilizer, a fertilizer pump 42 for sending the paste fertilizer in the fertilizer tank 41, and the fertilizer pump The fertilizer nozzle 43 which guides the paste fertilizer sent out by 42 to be discharged to the field, and the stopper for operating whether or not the paste fertilizer is discharged for each of the fertilizer nozzles 43 arranged in a row on the left and right It comprises a valve 44, a fertilizer concentration detecting device 46 for detecting fertility in the soil, a tilling depth detecting means 47 for detecting the tilling depth, and a control unit 50. The controlling unit 50 performs fertilization. When performing, the fertilizer application amount by the fertilizer application device 8 is automatically controlled based on the fertilizer concentration of the soil detected by the fertilizer concentration detector 46 and the tiller depth detected by the tiller depth detector 47. It is configured to the fertilization control executed. (See FIGS. 1 to 3). Details will be described later.

  The fertilization nozzle 43 is a side near the seedling planted by the planting unit 21 and is provided such that the paste fertilizer is discharged at a position where the depth from the farm scene X2 is relatively shallow. It is provided between the row nozzle 43A and the seedlings planted side by side in the horizontal direction by the planting unit 21 so that the paste fertilizer is discharged to a position where the depth from the farm scene X2 is deeper than the side row nozzle. A deep nozzle 43B (see FIG. 3).

  The fertilizer pump 42 is provided between the front and rear wheels 1 and 2 and on the lower side of the traveling machine body 3, and a side strip for sending the paste fertilizer in the fertilizer tank 41 toward the side nozzle 43 </ b> A. Pump unit 42A and a deep layer pump unit 42B for sending the paste fertilizer in the fertilizer tank 41 toward the deep layer nozzle 43B (see FIG. 3).

  The side strip pump unit 42A is configured such that the amount of paste fertilizer delivered can be adjusted steplessly by controlling the driving force of the side strip drive motor 45A (motor). By controlling the driving force of the deep layer drive motor 45B (motor), the amount of paste fertilizer delivered can be adjusted steplessly (see FIG. 3).

  According to this structure, the fertilizer application amount discharged from the side nozzle 43A fertilized along the seedlings planted in the field and the fertilizer application amount discharged from the deep nozzle 43B fertilized between the left and right seedlings can be controlled separately. Therefore, a suitable amount of paste fertilizer can be simultaneously applied at the fertilization position in the vicinity of the seedling along the row of seedlings and the fertilization position between the streak of seedlings.

  In addition, the amount of fertilization can be adjusted steplessly by each drive motor 45, and the paste fertilizer from the fertilizer nozzle 43 by controlling the driving force of the drive motor 45 by using the paste fertilizer as the fertilizer. Therefore, the control of the fertilizer application amount by the control unit 50 can be easily set. Furthermore, the use of each drive motor 45 as the power for the fertilizer application device 8 simplifies the configuration compared to a drive force taken from a working PTO shaft (not shown), and the installation space for the fertilizer pump 42 is small. it can.

  The said stop valve 44 is arrange | positioned at the back side of the said seat 13 (refer FIG. 1). The streak valve 44 is provided in a path between the side strip side valve 44A provided in the path between the side strip pump unit 42A and the side strip nozzle 43A, and in the path between the deep layer pump unit and the deep layer nozzle 43B. The fertilizer application nozzle 43 is configured to be able to open and close the valves individually.

  Thereby, the operator can select arbitrarily the fertilization nozzle 43 in which fertilization is performed from the control part 12 side by operating the stopper valve 44. FIG. Incidentally, the strip stop valve 44 is provided with a connecting portion to which a plurality of hose members (not shown) for guiding the paste fertilizer from the strip stop valve 44 to each fertilizer application nozzle can be attached and detached.

  Further, a clogging sensor unit 48 for detecting whether or not each fertilization nozzle 43 is clogged is provided behind the seat where the streak valve 44 is disposed. When the clogging sensor unit 48 is clogged with paste fertilizer or foreign matter in each side nozzle 43A and deep layer nozzle 43B, an abnormality can be detected and notified to the operator.

  The fertilizer concentration detection device 46 has a pair of left and right electrode portions 49, 49, and a measuring device (not shown) that measures a current value and a voltage flowing between the pair of electrode portions 49, 49, and is applied to a farm field (soil ) The soil fertility can be detected from the electric conductivity calculated from the value of the current flowing between the pair of electrode portions 49, 49 inserted in the electrode 49 and the voltage. Are provided on the leveling work machine 7 side (see FIGS. 1 and 2).

  Specifically, the pair of electrode portions 49, 49 are respectively attached to the left and right ends of the cover body 33 of the leveling work machine 7, so that the planting operation by the planting portions 21 arranged on the left and right is performed. It is configured so that the fertility of the soil can be detected. Further, each electrode portion 49, 49 is attached so as to protrude downward from the back side of the cover body 33, so that the electrode portion 49 is inserted into the field (mud) on the rear side of the leveling rotor 32. It is configured to be.

  According to this configuration, the fertilizer application device 8 uses paste fertilizer, and since the fertilizer is discharged by pumping the fertilizer held by the pipe resistance by the fertilizer pump 42, the fertilizer is fed from the hopper. Compared with granular fertilizer that applies fertilizer by dropping to the field with wind pressure of blower and liquid fertilizer fertilizer that has low duct resistance and easily flows out of the nozzle, fertilizer application is responsive without the need to take pipe length into consideration It can be controlled well. Moreover, since the fertilizer concentration detection apparatus 46 (electrode part 49) is arrange | positioned in the front side vicinity of the fertilization nozzle 43 from which the paste fertilizer is discharged by the fertilizer application apparatus 8, the fertility of the soil detected by the fertilizer concentration detection apparatus 46 Therefore, the controller 50 can be easily set when discharging the fertilizer to the target fertilizing position with the controlled fertilizing amount.

  In addition, the leveling work machine 7 (cover body 33) whose electrode part 49 is controlled to move up and down at the same time as the planting work machine 6 is moved up and down based on the sensing by the center float 22A. Since the electrode part 49 can always maintain a state where it is inserted at a predetermined depth from the field scene during planting work, the fertility of the soil can be detected stably.

  Since the electrode portion 49 is attached to the rear side of the cover body 33 of the leveling work machine 7, the pair of electrode portions 49, 49 are inserted into the field scene immediately after being leveled by the leveling rotor 32. The insertion depth of the electrode portion 49 into the field is stabilized. Thereby, the accuracy of soil fertility detected by the fertilizer concentration detector 46 is also improved.

  Next, based on FIG.4 and FIG.5, the specific structure of the cultivation board depth detection means 47 is demonstrated. 4 (A) and 4 (B) are model diagrams showing how the tilling depth is detected by the tilling depth detecting means. The tiller depth detecting means 47 detects the lift angle of the lifting link 4 to detect the lift position of the planting work machine 6 and the planting depth of the planting unit 21. The planting depth sensor 30 is used for detecting the cultivating depth, and the cultivation depth is detected from the detection values obtained from both sensors.

  More specifically, as shown in FIG. 4 (A), the planting work machine 6 senses a predetermined earth pressure from the field scene X2 by the center float 22A as a sensing body (grounding to the field scene X2). The field scene in which the lower surface side of the float 22 is grounded from the tiller X1 where the rear wheel 2 is grounded by the lift angle detected by the lift angle potentiometer 35 by being lifted and lowered to the planting position which is the lift position. A height (h1) up to X2 can be detected.

  However, as shown in FIG. 4B, the height position of the float 22 with respect to the planting machine 6 (horizontal frame 17) is determined by the planting depth by the vertical swinging operation of the planting depth adjusting lever 28. It fluctuates by adjusting the height. The raising / lowering amount (h 2) of the planting work machine 6 that varies based on the operation of the planting depth adjustment lever 28 can be detected by the planting depth sensor 30.

  Accordingly, the tiller depth detecting means 47 detects the height of elevation (h2) detected by the planting depth sensor 30 from the reference height (h1) of the tiller depth detected by the lift angle potentiometer 35. ) Can be added or subtracted to detect the cultivation depth (H) used for controlling the amount of fertilization.

  According to this structure, the cultivation board depth detection means which detects the cultivation board depth which is the height from the cultivation board X1 where the front and rear wheels 1 and 2 run to the farm field X2 where the float 22 slides. 47 is composed of a lift angle potentiometer 35 attached to a normal planting work machine 6 and a planting depth sensor 30, so that a dedicated sensor for detecting the tilling depth needs to be provided separately. Therefore, the number of parts can be reduced and the cost can be kept low.

  Next, the control unit will be described with reference to FIG. FIG. 5 is a block diagram of the control unit. On the output side of the control unit 50, a work machine operation cam motor 51 that drives a work machine operation cam (not shown) that operates raising and lowering of the planting work machine 6, the side strip fertilization drive motor 45 </ b> A, and the deep layer fertilization A drive motor 45B is connected.

  On the other hand, on the input side of the control unit 50, a work machine preparation switch 52, a planting automatic switch 53, a work machine operation switch (upper side) 54 for detecting the raising operation of the planting work machine 6, and planting A work machine operation switch (lower side) 56 that detects a lowering operation of the work machine 6, a work machine operation cam potenti 57 that detects an operation position of the work machine operation cam, the lift angle potentiometer 35, and the planting depth A sensor 30, a GPS antenna 58, a communication device 59, a rotation sensor 61 for detecting the traveling speed of the traveling machine body, and the fertilizer concentration detecting device 46 are connected.

  When the work machine preparation switch 52 is turned on (ON operation), the control unit 50 enables the planting work machine 6 and the fertilizer application 8 to be driven, while the work preparation switch 52 is turned off ( When an OFF operation is performed, the driving of the planting work machine 6 and the fertilizer application device 8 is regulated. In addition to this, when the planting automatic switch 53 is turned on (ON operation), the planting machine 6 is caused to travel straight in a state where the planting work machine 6 is lowered to the planting position, so that the seedling by the planting unit 21 can be obtained. The planting operation and the planting automatic control in which the fertilizer application by the fertilizer application device 8 is made possible, while the planting automatic switch is turned off (OFF operation), the execution of the planting automatic control is restricted. State.

  In addition, the control unit is configured to simultaneously execute fertilization control for driving the fertilizer and performing fertilization to the field when performing planting work by automatic planting control or the like. In addition, you may comprise this fertilization control so that execution is possible even in the state where a planting operation is not performed.

  In the fertilization control, the fertilizer concentration detection device 46 detects soil characteristics from soil fertility, and controls the amount of paste fertilizer to be applied to the detected location. Specifically, if it is detected that the fertility of the soil detected by the fertilizer concentration detection device 46 is not sufficient compared to the reference value, increase the amount of paste fertilizer delivered to the detection location, If it is detected that the fertility of the soil is sufficient compared to the reference value, the amount of paste fertilizer delivered can be reduced. Thereby, at the time of the fertilization operation | work by a fertilizer application, the application quantity of paste fertilizer can be controlled without excess and deficiency so that unevenness in the fertility in soil may decrease.

  Similarly, in the fertilization control, when the tiller depth (paddy field depth) detected by the tiller depth detecting means 47 is deep, the slip amount of the traveling machine body increases, so that the paste fertilizer is sent out. If it is detected that the tiller depth is shallower than the standard, the slip amount of the traveling machine will be reduced, so by increasing the feed amount of paste fertilizer, the difference in tiller depth Regardless, the amount of fertilization can be controlled to be uniform.

  Further, the control unit 50 uses, for example, the GPS antenna 58 and the communication device 59 such as a tablet PC or a smartphone to perform planting data, the state of the field, the type of paste fertilizer to be fertilized, the soil It is possible to acquire various information such as the amount of fertilizer necessary for the application and to reflect the amount of fertilizer applied by the fertilizer application.

  Next, based on FIG.6 and FIG.7, a different point from the above-mentioned example is demonstrated about another Example of arrangement | positioning of the said fertilizer concentration detection apparatus provided in the fertilizer application apparatus. FIG.6 and FIG.7 is the principal part side view and principal part rear view which showed the planting work machine in another Example. The fertilizer concentration detection device 47 is attached to an apron guard mechanism 66 provided on the left and right ends of the apron 19 on the lower end side of the seedling platform 18 so as to be rotatable up and down.

  The apron guard mechanism 66 includes a support bracket 67 including two plate-like members 67a and 67b extending downward from the front surface and the rear surface on the left and right ends of the horizontal frame 17, and the support bracket 67. A rotation member 68 that is a rod-like member whose tip is curved in a U-shape and supported so as to be vertically rotatable via a plate-like attachment member 69 is provided.

  The pivoting members 68 are provided on the left and right ends of the horizontal frame 17, respectively, and each pivoting member is pivoted up to a position where the front end covers the left and right ends of the apron 19 and guards. The posture can be switched between a guard posture and a stand posture in which the distal end side of the rotation member 68 is directed downward and the rotation member 68 is rotated downward to a position where it functions as a stand (see FIG. 7). .

  On the other hand, a pair of left and right electrode portions 49, 49 constituting the fertilizer concentration detecting device 47 are provided on the support brackets 67, 67 side provided on the left and right end sides of the horizontal frame 17 via an attachment member 69, respectively. Each is fixedly mounted. Thereby, since the said electrode part 49 can be arrange | positioned in the empty space formed in the right-and-left both ends side of the planting work machine 6 (apron 19), the fertilizer density | concentration detection apparatus 47 can be installed efficiently.

  Furthermore, since the electrode portion 49 is mounted and fixed between the support brackets 67 made of front and rear plate members (the front side of the rear plate member), the electrode portions 49 are protected by the support bracket 67, Durability is improved.

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Traveling machine body 6 Planting work machine 7 Leveling work machine 18 Seedling stand 19 Apron 21 Planting part 41 Fertilizer tank 42 Fertilizer pump 42A Side strip pump unit (fertilizer pump)
42B Deep pump unit (fertilizer pump)
43 Fertilizer nozzle 43A Side nozzle (fertilizer nozzle)
43B Deep nozzle (fertilizer nozzle)
46 Fertilizer concentration detector (fertility sensor)
50 Control part 67 Support bracket 68 Rotating member

Claims (3)

A traveling body (3) supported by the front and rear wheels (1, 2);
A fertilizer tank (41) for storing paste-form paste fertilizer;
A fertilizer pump (42) for delivering paste fertilizer in the fertilizer tank (41);
A motor (45) for driving the fertilization pump (42);
A fertilizer nozzle (43) for discharging the paste fertilizer delivered by the fertilizer pump (42) to the soil side;
A fertility detection sensor (46) for detecting the fertility of the soil;
A control unit (50) for controlling the amount of fertilization,
The control unit (50) is configured to be able to adjust the amount of paste fertilizer delivered by the fertilizer pump (42) in a stepless manner according to the fertility in the field detected by the fertility detection sensor (46). Fertilizer application machine. The planting work machine (6) provided so that it can be raised and lowered behind the traveling machine body (3),
A planting part (21) for scraping off the seedling placed on the seedling platform (18) of the planting machine (6) and planting it on the field;
A leveling work machine (7) that is disposed in front of the planting part (21) and performs leveling work on the field,
The transplanting machine according to claim 1, wherein the fertility detection sensor (26) is attached to a leveling machine (7). The planting work machine (6) provided so that it can be raised and lowered behind the traveling machine body (3),
An apron (19) extending in the left-right direction for receiving the lower end side of the seedling placed on the seedling placing stand (18) inclined downward toward the rear;
A rotation member (68) supported so as to be vertically rotatable via support brackets (67) provided on both left and right ends of the apron (19);
The rotating member (68) is rotated upward to guard the left and right outer sides of the apron (19), and is rotated downward to stand as a stand that holds the non-grounded state of the planting work machine. And can be switched to
The transplanter according to claim 1, wherein the fertility detection sensor (46) is attached to the support bracket (67).

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