JP2003204750A - Method for spreading agrochemical and sowing implement with agrochemical-spreading device and agrochemical- spreading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for spreading an agrochemical, capable of spreading the agrochemical over seedling-growing boxes suitably and in a good efficiency in a sowing work on the seedling-growing boxes. <P>SOLUTION: This method for spreading the agrochemical is provided by arranging at least a sowing device 50 and a soil-covering device 60 along the conveying passage of the seedling-growing box-carrying device 10, also arranging an agrochemical-spreading device 70 for delivering a long period effectiveness- retaining type granular agrochemical (n) stored in a hopper 71 and continuously spreading over the seedling-growing boxes 1 moving on the conveying passage, and continuously spreading the agrochemical (n) delivered from the agrochemical-spreading device 70 over the conveyed seedling-growing boxes 1 after passing through the sowing device 50 and the soil-covering device 60. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pesticide spraying technique mainly used for rice cultivation.

[0002]

2. Description of the Related Art In recent years, as a pesticide for the action of rice, a granular long-acting pesticide with a long-acting medicinal effect has been developed which exerts a pest control effect in Honda for a long period of time simply by spraying the seedlings before rice planting. Various means have been researched and developed for saving labor in pesticide spraying work by using pesticides.

[0003] The long-acting pesticides having long-acting efficacy include those applied to seedling boxes during sowing treatment, and those applied to bed soil of seedlings grown several days before rice planting to the day of rice planting. is there. Then, as means for spraying and applying the seedlings in the seedling raising box at the time of sowing treatment, the following forms are implemented. A pesticide is mixed in advance with the bed soil supplied to the seeding machine, and the bed soil containing the pesticide is filled in the seedling raising box and then seeded. When performing continuous seeding treatment using a seeding machine, pesticide is sprayed immediately before seeding or immediately after seeding. Moreover, as a spraying application to the bed soil of seedlings, on the day of rice planting, spraying pesticides from above the seedlings placed on the seedling stand of the rice transplanter (for example, Japanese Utility Model Publication No. 7-18249,
Japanese Patent Laid-Open No. 2001-275423) is known.

[0004]

In the form of filling seedlings with bed soil mixed with pesticides and sowing, it is necessary to mix pesticides into the bed soil in advance, but in recent years, Bag-filled floor soil and floor soil substitute materials (paper-based, wood-based, foamed resin-based, etc.) are increasingly purchased and used. Has been added, and it has become possible for farmers to use it easily without the need for fertilizer mixing treatment.In these days when labor saving is desired, this pesticide spraying form that requires the mixing and mixing of pesticides is It is difficult to spread.

Further, in the form in which the pesticide is sprayed immediately before or immediately after sowing, the pesticide spraying device is provided between the bed soil filling device and the sowing device or between the seeding device and the soil covering device in the sowing work machine. However, existing sowing machines do not have the space to deploy pesticide sprayers in such an array, and it is necessary to purchase a new seeding machine designed and manufactured for spraying pesticides. The economic burden on farmers will increase.

Further, in the form of spraying pesticides onto seedlings on the seedling stand while performing rice planting work, the weight of the whole seedling planting device becomes heavy because the pesticide spraying device is attached to the seedling planting device at the rear of the machine. Affects the front and rear weight balance. In addition, since the spraying work is done in Honda, it is difficult to spray the pesticide properly when the wind is strong or it is raining.

The present invention has been made by paying attention to such a point, and a pesticide spraying method capable of spraying a pesticide to a nursery box in a seeding operation in a suitable and efficient manner, and a method for spraying the same. An object of the present invention is to provide a seeding machine equipped with a pesticide spraying device and a pesticide spraying device.

[0008]

In order to achieve the above object, the present invention has the following features.

[Characteristics and Effects of Invention According to Claim 1]

The pesticide spraying method of the present invention according to claim 1 continuously sprays the long-acting long-acting granular pesticide delivered from the pesticide spraying device into a nursery box which is transported through the seeding device and the soil covering device. It is characterized by doing.

According to this, in the final step of the sowing work, the pesticide is mixed in the cover soil and sprayed, or sprayed on the surface of the cover soil, and there is almost no direct contact with the seeds, and the seed buds are germinated during germination. There is no risk of chemical damage to the roots and roots. In particular, this main pesticide is hard and difficult to dissolve so that its medicinal effect can be maintained until the growing period in Honda, so even if it may come into contact with the pesticide during germination, When only about 3 days have passed since then, the pesticide is not yet sufficiently dissolved and there is no risk of the buds being damaged by the chemicals. Then, when the pesticide was sufficiently dissolved, the seedlings had already grown sufficiently and there was no concern about chemical damage.

Further, since the pesticide spraying device used here is arranged behind the soil covering device, it can be arranged in an empty space near the rear end of the seedling raising box transporting device in the existing sowing work machine.

Therefore, according to the pesticide spraying method of the first aspect of the present invention, the pesticide spraying can be carried out in series with the seeding work simply by disposing the pesticide spraying device in the rear empty space of the existing seeding work machine. As a result, it became possible to efficiently perform the pesticide spraying process before raising the seedlings with the minimum economic burden of preparing a pesticide spraying device. Moreover, the sprayed pesticides are either mixed with the cover soil and then sprayed, or they are sprayed on the surface of the cover soil. It is possible to spray various pesticides.

[Characteristics and Effects of Invention of Claim 2]

According to a second aspect of the present invention, in the first aspect of the present invention, the pesticide fed from the pesticide spraying device is mixed with the soil cover fed from the soil cover device.
It is characterized in that it is continuously sprayed in the seedling-raising box that has been seeded and is transported.

[0016] According to this, the pesticide is easily diffused by the impact of hitting the flowing soil covered with the soil covering device, and the pesticide can be easily evenly distributed in the nursery box without requiring a special complicated diffusion mechanism. can do.

[Characteristics and Effects of Invention of Claim 3]

According to the third aspect of the present invention, there is provided a pesticide spraying method, in which the long-lasting granular granular pesticide fed from the pesticide spraying device is mixed with the floor soil fed from the floor soil filling device,
The feature is that it is continuously sprayed in the seedling raising boxes that are transported.

According to this, the pesticide is easily diffused by the impact when the bed soil is fed from the bed soil filling device and hits the flowing bed soil, and the bed soil in which the pesticide is uniformly mixed can be filled in the nursery box. it can. As a result, the pesticide can be easily mixed uniformly in the bed soil during the bed soil filling process without the need for preliminary work such as stirring and mixing the pesticide in the bed soil in advance, which is effective in improving work efficiency. .

[Characteristics and Effects of Invention of Claim 4]

According to a fourth aspect of the present invention, there is provided a sowing work machine equipped with a pesticide spraying device, which is arranged along a conveying path for placing and conveying a nursery box.
Along with deploying at least a seeding device and a soil covering device, in the vicinity of the rear of the soil covering device, a pesticide spraying device for continuously spraying in a nursery box moving on a transport path by feeding out a granular long-acting granular pesticide stored in a hopper. It is characterized by having deployed.

According to this structure, as in the sowing work machine in which the pesticide is sprayed immediately before or immediately after sowing, the pesticide is sprayed between the bed soil filling device and the sowing device, or between the sowing device and the soil covering device. It is not necessary to install the device, and the pesticide spraying device may be installed by using a small empty space behind the soil covering device in the existing sowing work machine. Therefore, it is possible to inexpensively configure a seeding work machine with a pesticide spraying device that can efficiently perform the pesticide spraying process before raising seedlings without requiring a major modification or design change.

[Characteristics and Effects of Invention of Claim 5]

According to a fifth aspect of the present invention, in the sowing work machine with a pesticide spraying device according to the fourth aspect of the invention, the soil cover feeding portion of the soil covering device is provided rearward and the pesticide feeding portion of the pesticide spraying device is covered with a soil covering device. It is provided in a forward direction so as to face the above-mentioned soil covering delivery site.

According to this structure, since the pesticide is mixed so as to face the flow of the soil cover fed from the soil cover device, the pesticide is more likely to be diffused by the impact when it hits the soil cover, resulting in a more uniform distribution. It is possible to spray pesticides.

[Characteristics and Effects of Invention of Claim 6]

According to a sixth aspect of the present invention, in the sowing work machine with a pesticide spraying device according to the fifth aspect of the invention, at least the pesticide delivery site of the pesticide spraying device can be adjusted back and forth.

According to this structure, when the pesticide delivery site is moved forward and brought close to the soil cover delivery site, the pesticide is sprayed while mixing the pesticide into the downflowing soil. Conversely, the pesticide delivery site is moved backward. When it is moved away from the soil cover delivery site, the surface of the soil cover seeded in the nursery box is sprayed with the pesticide, and both spraying conditions can be used properly.

Therefore, according to the sixth aspect of the invention, it is possible to carry out a suitable pesticide application form according to the type of seed, the type of pesticide, and other conditions.

[Characteristics and Effects of Invention of Claim 7]

According to a seventh aspect of the present invention, there is provided a sowing work machine equipped with a pesticide spraying device, wherein the stop timings of the seeding device, the soil covering device and the pesticide spraying device are synchronized with each other. It has been done.

According to this structure, when seed feeding by the seeding device and soil feeding by the soil covering device are stopped, pesticide feeding by chemical spraying is also stopped, and expensive pesticide is wastefully fed. It will not be lost.

[Characteristics and Effects of Invention of Claim 8]

The pesticide spraying device of the invention according to claim 8 is the soil covering device rear in a sowing work machine comprising at least a seeding device and a soil covering device arranged along a conveyance path of a seedling raising box conveying device for placing and conveying a seedling raising box. And a leg portion that is self-standing on the floor surface across the seedling raising box transporting device.

With this configuration, it is not necessary to modify the pesticide spraying device by mounting it on the nursery box carrier, and it can be installed even if the lateral width of the nursery box carrier is slightly different. Therefore, it is possible to use the seeding work machine of each company that is already owned as a seeding work machine with a pesticide spraying device, which is effective in reducing the economic burden on the farmer. In addition, since the installation position of the pesticide spraying device with respect to the soil cover device is not restricted, the pesticide spraying position can be set arbitrarily, and the spraying form while mixing the pesticide in the cover soil or the surface of the cover soil seeded in the nursery box can be set. It is possible to use different pesticide application forms.

[Characteristics and Effects of Invention of Claim 9]

According to a ninth aspect of the invention, in the pesticide spraying apparatus of the eighth aspect, the leg portion is provided with a clamp bolt that abuts the seedling raising box transporting device from the side.

According to the above configuration, the pesticide spraying device can be fixed in position with respect to the nursery box transporting device by holding the nursery box transporting device by the clamp bolts of the legs straddling the nursery box transporting device. By adjusting the clamp bolts on both sides of the nursery box carrier, it is possible to position the pesticide sprayer in the lateral direction with respect to the nursery box carrier, and even if the lateral dimensions of the nursery box carrier are different, A pesticide spraying device can be installed at an appropriate position to appropriately perform desired pesticide spraying.

[0039]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a first example of a seeding working machine with a pesticide spraying device configured to carry out a pesticide spraying method according to claims 1 and 2 of the present invention. This seeding work machine equipped with a pesticide spraying device is provided with a bed soil filling device 2 along a transport path of a nursery box transport device 10 which is long in the front and rear.
0, floor soil leveling device 30, irrigation device 40, seeding device 5
0, and the soil covering device 60 is arranged in this order, and the pesticide spraying device 70 is attached to the rear part of the existing sowing work machine (see FIG. 12). While carrying the nursery box 1 supplied from the start end (left end in the figure) of the front (right side in the figure), the soil filling process, the seeding process, the soil covering process, and the pesticide spraying process were performed. The nursery box transporting device 10 is configured to be delivered to the end portion (the right end portion in the figure).

The nursery box carrier 10 is constructed such that a pair of left and right carrier belts 12 are horizontally wound inside a carrier frame 11 which is long on the floor and is long and front, and is driven by a motor. A free conveyor-shaped auxiliary frame 13 extends from the rear end.
Then, the motor drive speed can be adjusted to arbitrarily adjust the nursery box transportation speed, and a contact-type sensor S for detecting the presence or absence of the nursery box 1 is provided at the end side of the transportation path. When the sensor S detects that the nursery box 1 has been present for more than the specified time, the motor drive is automatically stopped and the retention is released when it is determined that the treated nursery box is retained. And the transportation will be resumed. Further, the bed soil filling device 20, the bed soil leveling device 30, the watering device 40, the seeding device 50, and the soil covering device 60 are driven and stopped in synchronization with the driving and stopping of the nursery box transporting device 10. ing.

Further, the bed soil filling device 20 is constructed so as to feed the bed soil T stored in the hopper 21 quantitatively by a wide feeding belt 22 and fill the seedling raising box 1 to a predetermined thickness. The device 30 is configured to even out the surface of the bed soil filled in the box with a rotating brush to sweep out the excess bed soil to the outside of the box, and press down the surface of the bed soil with a pressing roller as necessary. Further, the irrigation device 40 sprays water (or water mixed with a chemical solution such as a disinfectant) on the leveled floor soil to sufficiently moisten the floor soil T. In addition, the seeding device 50 delivers the seed (seed paddy) m stored in the hopper 51 to the feeding roller 52.
By a predetermined amount, and is spread and scattered in a predetermined density on the surface of the floor soil T. Further, the soil cover device 60 is configured to feed out the soil cover t stored in the hopper 61 by a wide feed belt 62 in a fixed amount to thinly cover the seed m seeded.

The pesticide spraying device 70 is attached to an empty space existing in the rear part of the nursery box transporting device 10 in the existing sowing work machine, and the detailed construction of the pesticide spraying device 70 is shown in FIGS. 2 and 3. Has been done. That is, the pesticide spraying device 70 is configured to feed the granular pesticide n stored in the hopper 71 quantitatively by the feeding roller 72 with a groove and to feed it down into the seedling raising box 1 via the guide chute 73. Here, the amount of pesticide sprayed per box is 5
Since it is a small amount of about 0 g, the feeding roller 72 has a small width in order to improve the feeding accuracy. Also,
In order to spray the pesticide n fed out in a small width over the entire width of the seedling raising box 1, the guide chute 73 is formed in a flared shape, and as shown in FIG.
The flow-down guide surface is formed in a curved shape in which the central portion bulges slightly upward. Further, the motor 74 that drives the feeding roller 72 can adjust the amount of feeding arbitrarily by adjusting the rotation speed thereof, and the motor control device is also connected to the sensor S. 1
It is designed to be driven and stopped in synchronization with the driving and stopping of other devices such as zero.

The pesticide delivery part of the pesticide spraying device 70 is provided in a forward direction, and is arranged so as to face and approach the rearward cover soil delivery part of the soil cover device 60.
The pesticide n is mixed into the soil cover t that is fed from the soil cover device 60 and is falling, and is continuously sprayed in the seeded nursery box that has been seeded and is transported. In this case, by mixing the pesticide n from the opposite direction into the cover soil flowing down, the diffusion of the pesticide n is promoted by the collision and the pesticide n is uniformly sprayed in the nursery box.

As shown in FIG. 5, the seedling raising box 1 taken out from the seeding machine has a seed m seeded on the surface of a floor soil T having a predetermined thickness and a cover soil of an appropriate thickness mixed with a pesticide n. In the state of being covered with t, as shown in FIG. 6 (a), a group of seedling-grown nursery boxes are arranged in a plane and covered with a heat insulating material F such as a resin film or sorghum to germinate, or a flat-bedded germination form, or As shown in FIG. 6B, the seedling-growing box 1 that has been seeded.
The seedlings are grown in a mat seedling through a germination process such as a stacked germination mode in which a large number of plants are stacked and germinated, and then a greening process and a curing process, and the mat seedlings are loaded into a rice transplanter and planted in Honda. In the above germination process,
The soil cover surface is set lower than the upper edge of the nursery box 1, and a gap is formed between the soil cover surface and the heat insulating material F in the flat-bed germination mode or between the bottom of the upper nursery box 1 in the stacked germination mode. Therefore, the pesticide n in the box is not wasted by adhering to the heat insulating material F or the upper layer nursery box 1.

Here, as shown in FIG. 3, the carrier frame 11 of the nursery box carrier 10 is provided with a plurality of front and rear sets of bolt holes 14 for attaching the pesticide sprayer, and selects the bolt hole 14 to be used. By doing so, it is possible to adjust the position of the agricultural chemical spraying device 70 forward and backward with respect to the soil covering device 60. According to this, the forward pesticide delivery part of the pesticide spraying device 70 can be moved back and forth with respect to the rearward soil cover delivery part of the soil cover device 60. For example, by shifting the pesticide sprayer device 70 rearward, as shown in FIG. As shown in FIG. 8, it is also possible to spray the pesticide n on the surface of the soil cover t supplied to the seedling raising box 1, and spray the pesticide n without directly contacting the seed m. When spraying the pesticide n on the surface of the soil cover t in this way, the pesticide n is sent out in the direction opposite to the moving direction of the seedling raising box 1 and drops onto the soil cover, so the pesticide when landing on the surface of the soil cover t. n splashes are promoted and pesticides n
Is effectively diffused. It is also possible to provide front and rear elongated holes instead of the front and rear sets of bolt holes 14 and adjust the front and rear positions of the pesticide spraying device 70 over a predetermined range in a stepless manner to perform bolt connection.

As a means for changing the position of the forward pesticide spraying part of the pesticide spraying device 70 relative to the rearward covering soil sending part of the soil covering device 60, the pesticide spraying device 7 is used as described above.
In addition to adjusting the position of the entire 0 back and forth, for example, as shown in FIG. 9, an extension chute 75 attached to a guide chute 73
By adjusting the advancing / retreating of pesticide n, it is possible to selectively use the form in which the pesticide n is sprayed while being mixed in the cover soil t and the form in which the pesticide n is sprayed on the surface of the cover soil t supplied to the seedling raising box 1.

10 and 11 show the eighth aspect of the present invention.
The seeding work machine of the 2nd example equipped with the agricultural chemical spraying device concerning 9 and 9 is shown. As in the first example, an existing seeding work machine including a soil covering device 60 is used for the main part in this example, but the pesticide spraying device 70 used here is provided with four legs 76. The nursery box carrier device 1
It is constructed so that it can stand on the floor by straddling 0. Therefore, it is possible to perform the same pesticide spraying process as that described in the first example by merely disposing the pesticide spraying device 70 at the rear part of the existing seeding work machine owned by the farmer.

Each leg 76 is provided with a clamp bolt 77 with a knob, and by sandwiching the carrier frame 11 of the nursery box carrier device 10 with the left and right clamp bolts 77, the pesticide sprayer 70 rattles. It is possible to prevent sticking and use it for lateral positioning adjustment of the pesticide spraying device 70 with respect to the nursery box transporting device 10.

13 and 14 show the third aspect of the present invention.
There is shown a floor soil filling work machine with a pesticide spraying device for carrying out the pesticide spraying method according to the above. This floor soil filling work machine with a pesticide spraying device is an existing floor soil configured by arranging a floor soil filling device 20 and a floor soil leveling device 30 along a transport path of a seedling box transport device 10 that is long in the front and rear. In the filling work machine, the pesticide spraying device 70 having the above-described configuration is additionally provided between the floor soil filling device 20 and the floor soil leveling device 30 having the above configuration, and the starting end portion of the nursery box transporting device 10 is configured. (See the left end in the figure) While feeding the nursery box 1 to the front (right side in the figure), the soil is filled, the pesticide is sprayed, and the soil is leveled. It is configured so as to be delivered to the terminal end portion of 10 (the right end portion in the drawing).

Here, as described above, the bed soil filling device 20 is constructed such that the bed soil T stored in the hopper 21 is quantitatively fed by the wide feeding belt 22 to fill the seedling raising box 1 to a predetermined thickness. In addition, the floor soil leveling device 30
The floor soil surface filled in the box is smoothed by a rotating brush to sweep out excess floor soil outside the box, and the floor soil surface is pressed by a pressure roller as necessary.

As described above, the pesticide spraying device 70 quantitatively feeds out the powdery pesticide n stored in the hopper 71 by the feeding roller 72 with a groove having a small width, and the central portion bulges upward slightly in the shape of a tip. The guide chute 73 having an elliptic shape is configured to flow down and forward. The tip of the guide chute 73 is arranged so as to face and approach the rearward-facing floor soil delivery portion of the floor soil filling apparatus 20, and to the floor soil T which is fed from the floor soil filling apparatus 20 and is falling. While mixing the pesticide n, the pesticide n is continuously flown down to the nursery box 1 to be transported. in this case,
By mixing the pesticide n into the flowing down soil T from the opposite direction, the collision of the pesticide n promoted the diffusion of the pesticide n, and as shown in FIG. 15, the floor soil T and the pesticide n were uniformly mixed. The seedling raising box 1 is filled in the state.

[Other Embodiments] In the seeding work machine with the agrochemical spraying device of the first and second examples, an empty seedling raising box 1 is supplied to the start end of the seedling raising box transporting device 10 as a basic seeding working machine. Floor soil filling process,
The case of using the type in which the seeding process and the soil covering process are performed in series is illustrated, but the seedling-raising box 1 containing the bed soil in which the bed-soil filling process is performed in a separate process is used as the starting end of the seedling-raising-box transfer device 10. It is also possible to use as a basic seeding work machine a model of a series of supplying and sowing treatment and soil covering treatment in series, with the pesticide spraying device 70 attached to the rear part thereof or arranged so as to straddle it. In the above-mentioned floor soil filling work machine equipped with a pesticide spraying device, a watering device 40 may be provided behind the floor soil leveling device 30 as required.

The present invention can also be applied to sowing work and floor soil filling work when cultivating vegetables and flower seedlings using a nursery box.

[Brief description of drawings]

FIG. 1 is an overall side view showing a seeding working machine with a pesticide spraying device of a first example.

FIG. 2 is a vertical sectional side view of a main part.

FIG. 3 is a plan view of a main part

FIG. 4 is a perspective view showing a main part of the pesticide spraying device.

FIG. 5 is a vertical sectional side view showing a part of the treated nursery box.

FIG. 6 is a vertical cross-sectional view showing two types of germination morphology.

[Fig. 7] Side view of the main part set to another pesticide spraying form

FIG. 8 is a vertical sectional side view showing a part of a treated nursery box treated with another pesticide spraying form.

FIG. 9 is a vertical cross-sectional side view of essential parts showing another means for adjusting the position of the pesticide delivery site.

FIG. 10 is a side view showing a main part of a seeding work machine with a pesticide spraying device according to a second example.

FIG. 11 is a front view showing a main part of a seeding work machine with a pesticide spraying device according to a second example.

FIG. 12 is an overall side view showing an example of an existing seeding work machine.

[Fig. 13] Overall side view of a floor soil filling work machine with a pesticide spraying device

FIG. 14 is a vertical sectional side view of a main part.

FIG. 15 is a vertical sectional side view showing a part of a nursery box filled with bed soil.

[Explanation of symbols]

1 nursery box 10 Nursery box carrier 20 Floor soil filling device 50 seeding device 60 soil cover device 70 Pesticide spraying device 71 hopper 76 legs 77 Clamp bolt n pesticide T floor soil t soil cover

Claims (9)

[Claims] 1. A pesticide spraying method, which comprises continuously spraying a granular long-term pesticide with a long-acting medicinal effect delivered from a pesticide spraying device into a nursery box that is transported through a seeding device and a soil covering device. 2. The pesticide fed from the pesticide spraying device is continuously sprinkled in the seeded seedling-growing box to be transported, while being mixed with the soil cover fed from the soil cover device. Pesticide application method. 3. A method for continuously spraying a granular long-term pesticide with a long-acting medicinal effect delivered from an agrochemical spraying device into a transported nursery box while being mixed with a bed soil delivered from a bed soil filling device. And pesticide application method. 4. At least a seeding device and a soil covering device are arranged along the conveying path of the nursery box conveying device, and the long-acting long-acting granular pesticide stored in the hopper is fed out to a position near the rear of the soil covering device. A seeding machine equipped with a pesticide spraying device, which is equipped with a pesticide spraying device that continuously sprays the seedlings in a nursery box that moves on a transport path. 5. The pesticide spraying device according to claim 4, wherein the soil cover delivery portion of the soil cover device is provided rearward, and the pesticide delivery portion of the pesticide spraying device is provided forward so as to face the soil cover delivery portion of the soil cover device. Seeding machine with device. 6. The seeding work machine with a pesticide spraying device according to claim 5, wherein at least a pesticide delivery site of the pesticide spraying device is configured to be adjustable in position in the front-back direction. 7. The structure according to claim 4, wherein the stop timings of the seeding device, the soil covering device and the pesticide spraying device are synchronized.
A seeding work machine with an agricultural chemical spraying device according to any one of 6 above. 8. A seedling raising machine is provided at the rear of a soil covering device in a seeding work machine having at least a seeding device and a soil covering device along a conveying path of a seedling raising container carrying device for placing and carrying the seedling raising container and carrying the seedling raising container. A pesticide spraying device, characterized in that it is provided with legs that stand on the floor by straddling the device. 9. The clamp bolt is provided on the leg portion so as to abut against the nursery box carrier from the side.
Pesticide spraying device described.