CN205921964U - Seeding blinding ware and little seed grain crop seeder - Google Patents

Abstract

The utility model provides a sowing and covering device and a seeder for small-grain crops. The small-grain crop seeding machine includes a rotary tiller, a seed bin fixedly connected to the rotary tiller through a bracket, and the above-mentioned sowing and covering device. The sowing and covering device includes: a sowing tube, including a seed inlet and a seed outlet, the seed inlet is connected with the seed bin of the small-grain crop seeder, and the seed outlet is suspended relative to the soil surface; a linear covering structure is connected to the sowing On the pipe, it moves together with the sowing pipe, and by forming a linear gully parallel to the sowing path of the sowing pipe on the soil, the soil is pushed to cover the seeds dropped by the sowing pipe on the soil. The utility model can successfully sow seeds under different flatness terrains and/or different soil moistures, and achieve better seedling emergence effects, while ensuring consistent seedling emergence time, and seedling emergence neatly and in rows.

Description

Sowing mulchers and seeders for small grain crops

technical field

The utility model relates to the technical field of agricultural machinery, in particular to a soil covering device for sowing and a seeder for small grain crops.

Background technique

With the development of social urbanization in our country, there is a serious shortage of rural labor force. Therefore, the fundamental way out of agriculture lies in mechanization. The development of efficient and high-yield mechanized sowing methods is an inevitable trend of modern agricultural development.

At present, there are certain products on the market for small-grain crop seeders such as sesame and rapeseed, but the emergence effect is unstable in practical applications. For example, sesame seeds have small grains and poor ability to top the soil. After sowing, they are too deep into the soil to germinate. Therefore, in fields with uneven terrain such as hilly areas, it is difficult to pre-set the position of the sowing tube. If the setting is too low, the seeds will be buried deeper in the higher parts of the ground. If the setting is too high , The lower part of the ground will inevitably cause the seeds to be sown on the surface and cannot be buried in the soil, which will eventually lead to a lower emergence rate of sesame. At the same time, in order to grab the best time for sowing (for example, it is best to plant sesame seeds when the soil humidity is high, and the next three to four days after sowing will be sown in weather with no moderate to heavy rain, and the emergence effect will be the best). When it is bigger, sow when rushing, at this moment, the sowing pipe is easily blocked by earth when walking in the soil.

Chinese patent document CN204616299U discloses an integrated multifunctional seed drill for sesame cultivation and fertilization, including: a rotary tiller, a rotary tiller blade, a seeder, and a soil covering device. The rotary tiller blade is fixedly connected to the bottom of the rotary tiller, and the seeder is connected to The rotary tiller is fixedly connected, and the soil covering device is respectively connected with the seeder and the rotary tiller through brackets. Wherein, the seed drill also includes a hose and a seed pipe, and there are at least two rows of the seed pipe. One end of the hose is connected to the seeder, and the other end is optionally connected to one of the rows of the seed pipe. The technology disclosed in this patent document can change the sowing position by changing the connection between the hose and different seeding pipes, and then enable the drill to use different sowing methods in sowing terrains with different flatness and different soil moisture. However, the technology disclosed in this patent document is to solve the problem of sesame seeding emergence rate under different flatness and different soil moisture conditions by arranging at least two rows of sowing tubes. Insert the soil layer for sowing, so the technology disclosed in the above patent documents can only be used to sow the seeds on the ground surface by connecting the hose to the front row of sowing pipes, and then use the rotary tiller blade to sow the seeds on the ground surface. Rotate to the ground to finish sowing. However, because the front row of seeding tubes rotate the seeds to the ground through the blades of the rotary tiller to complete the sowing, the depth of the cover soil is inconsistent, resulting in inconsistent emergence time, making the height of the seedlings uneven, and the rotary tiller blade rotary tillage cover soil will cause The distribution of seeds in the soil is too scattered, similar to that of sowing, which is inconvenient for field management and later mechanized harvesting; in addition, due to the inconsistent depth of cover soil with rotary tiller blades, some seeds may be sown in deeper parts and fail to emerge , which indirectly requires that the amount of sowing must be increased, resulting in a waste of cost.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the inconsistent seedling emergence time and the irregular seedling emergence and the increase in seeding rate caused by the small seed crop seeder in the prior art when sowing in uneven terrain or soil humidity. In order to provide a sowing cover device and a seeder for small-grain crops that have consistent seedling emergence time and relatively neat seedling emergence when sowing in uneven terrain or high soil humidity, and do not need to increase the seeding rate.

A sowing and soil covering device of the utility model is suitable for being installed on a seeder for small grain crops, comprising:

The sowing pipe includes a seed inlet and a seed outlet, the seed inlet communicates with the seed chamber of the small-grain crop seeder, and the seed outlet is suspended relative to the soil surface;

The linear soil covering structure moves together with the sowing tube, and pushes the soil to cover the seeds dropped by the sowing tube on the soil by forming a linear gully on the soil parallel to the sowing path of the sowing tube .

The linear soil cover structure is connected to the seeding pipe.

The seed outlet is set at a height of 5cm-10cm from the ground.

The lower end of the sowing pipe is arc-shaped, and the port surface of the seed outlet is inclined upward.

The linear soil covering structure is a rake.

The rakes include:

The connecting rod is fixedly connected with the seeding pipe;

At least two rake teeth, one end of the rake tine is fixedly connected to the connecting rod, and the other end extends downward to contact the ground.

The rake teeth are in an "S" shape.

The distance between the two ends of the rake teeth in the horizontal direction and the vertical direction is not less than 10cm.

The rake teeth are steel bars with a diameter of 0.8cm to 1.5cm.

The rake is a three-toothed rake, and the middle rake is connected to the connection between the connecting rod and the sowing pipe.

The distance between each rake tooth is 2cm-4cm.

A kind of small seed crop seeder of the present utility model comprises:

Rotary machine;

The seed bin is fixedly connected to the rotary tiller through a bracket; and

The above-mentioned sowing earth covering device.

It also includes a fertilizer bin and a fertilization pipe communicating with the fertilizer bin, the fertilizer bin is located above the rotary tiller, and is fixedly connected to the rotary tiller and the seed bin through brackets respectively.

The technical scheme of the utility model has the following advantages:

1. The sowing and covering device provided by the utility model is suitable for being installed on a small-grain crop seeder, including: a sowing pipe, including a seed inlet and a seed outlet, and the seed inlet is connected with the seed bin of the small-grain crop seeder , the seed outlet is suspended relative to the soil surface; the linear soil cover structure is connected to the sowing pipe and moves together with the sowing pipe, forming a line parallel to the sowing path of the sowing pipe on the soil In the form of a ravine, the soil is pushed to cover the seeds dropped on the soil by the sowing tube. The above-mentioned sowing and soil covering device, since the seed outlet of the sowing pipe is suspended relative to the soil surface, the seeds are sown on the ground or shallowly sown on the ground when sowing, and then fall on the soil through the linear soil covering structure connected to the rear of the sowing pipe. The seeds on the soil are covered with soil to complete the sowing, which can successfully complete the sowing under different flatness terrain and/or different soil moisture, and achieve a better emergence effect, and will not make the seeds distributed in the soil too scattered and different depths One, so as to achieve a better emergence rate under different flatness terrains and/or different soil humidity, while ensuring that the seed emergence time is consistent, and the emergence is neat and in rows, which is convenient for field management and harvesting.

2. In the sowing soil covering device provided by the utility model, the lower end of the sowing pipe is arc-shaped, and the port surface of the seed outlet is inclined upward. The structural form of the seeding pipe can effectively prevent the seed outlet of the seeding pipe from entering the soil and being blocked.

3. In the sowing and covering device provided by the utility model, the linear covering structure is a rake. The tine rake includes: a connecting rod fixedly connected to the seeding pipe; at least two rake teeth, one end of which is fixedly connected to the connecting rod, and the other end extends downward to contact the ground. The above-mentioned rake structure, on the one hand, can realize linear mulching through the elongated rake tines. The linear mulching can not only realize the mulching of the sown seeds, but also reduce the impact of the soil discharge on the height of the terrain, and avoid Seeds are piled up together to make seedling emergence uneven, and the long strips of rake teeth are not easy to stick to mud; on the other hand, because there are gaps between the rake teeth, field weeds or slightly larger soil clods can be removed from the periphery of the rake teeth or the rake teeth. The gap between them can pass through smoothly, so as to avoid the impact on the covering of seeds due to hanging grass and soil blocks, etc. The effect is especially obvious when applied in fields with more weeds in the field or relatively hardened fields like southern red soil. In addition, the tines extend down to the ground to ensure that the tines discharge soil to cover the seeds when planting. Before applying the above-mentioned sowing and covering device to fields with different terrains and/or humidity conditions, the positional relationship between the rake teeth and the soil surface can be pre-adjusted according to the specific conditions of the field to achieve better soil covering earth.

4. In the sowing and earth covering device provided by the utility model, the rake tines are in an "S" shape. The structure extending backward in an "S" shape can make the rake tines not easy to hang grass and soil clods.

5. For the sowing and earth covering device provided by the utility model, the rake teeth are steel bars with a diameter of 0.8 cm to 1.5 cm. This diameter range can not only ensure the strength of the rake tines, but also realize linear discharge and cover. In addition, the cross-section of the steel bar is generally circular, and the steel bar material and the tooth harrow with a circular cross-section are not easy to cause sticky mud, and can successfully cover the seeds of small-grain crops under the condition of high soil humidity.

6. In the sowing and earth covering device provided by the utility model, the rake is a three-toothed rake, and the middle rake is connected to the connection between the connecting rod and the sowing pipe. In this way, the tines on both sides of the three-toothed harrow can evenly cover the seeds sown by the seeding pipe respectively, and the amount of covered soil is sufficient and uniform, ensuring a good emergence rate and uniformity of emergence.

7. The planter for small-grain crops provided by the utility model includes a rotary tiller, a seed bin fixedly connected to the rotary tiller through a bracket, and the above-mentioned sowing soil cover device. The above-mentioned seeder for small grain crops, since the seed outlet of the sowing tube is suspended relative to the soil surface, the seeds are sown on the ground or shallowly sowed on the ground when sowing, and then the linear covering soil structure connected to the rear of the sowing tube is used. The way of forming linear gullies on the soil is to cover the seeds falling on the soil in a linear shape to complete the sowing, which can successfully complete the sowing under different flatness terrains and/or different soil moistures, and achieve better emergence effects, and The distribution of seeds in the soil will not be too scattered and different in depth, so as to achieve a better emergence rate under different flatness terrains and/or different soil moistures, while ensuring consistent emergence time and neat emergence of seeds.

8. The planter for small-grain crops provided by the utility model also includes a fertilizer bin and a fertilizing pipe connected with the fertilizer bin, the fertilizer bin is located above the rotary tiller, respectively connected to the rotary tiller, the The seed bin is fixedly connected by a bracket. Therefore, the seeder for small-grain crops of the present utility model can not only fertilize but also sow seeds, realizes the integration of fertilization and sowing, has a simple structure, powerful functions, and a wide range of applications.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the partial structural representation of the small seed crop seeder that provides in the embodiment 2 of the present utility model;

Fig. 2 is a partial structural schematic diagram of the sowing tube shown in Fig. 1;

Explanation of reference signs:

1-seeding pipe, 11-seed outlet, 111-port surface, 2-tooth rake, 21-connecting rod, 22-rake tooth, 3-seed bin, 4-rotary tiller, 5-fertilizer bin.

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

Example 1

As shown in Figure 1, the present embodiment provides a kind of sowing soil covering device, which is suitable for being installed on a seeder for small grain crops, including:

The sowing pipe 1 includes a seed inlet and a seed outlet 11, the seed inlet is communicated with the seed bin 3 of the seeder for small grain crops, and the seed outlet 11 is suspended relative to the soil surface;

The linear soil covering structure is connected to the sowing tube 1 and moves together with the sowing tube 1, and pushes the soil to Seeds dropped on the soil by the sowing pipe 1 are covered with soil.

The above-mentioned sowing and covering device, since the seed outlet 11 of the sowing pipe 1 is suspended relative to the soil surface, the seeds are sown on the ground or shallowly sown on the ground when sowing, and then the linear covering structure connected to the rear of the sowing pipe 1 is used to The linear gully is formed on the soil to cover the seeds falling on the soil in a linear shape to complete the sowing, which can successfully complete the sowing under different flatness terrain and/or different soil moisture, and achieve better emergence effect. Moreover, the distribution of seeds in the soil will not be too scattered and different in depth, so that while achieving a better emergence rate under different flatness terrains and/or different soil moistures, it is possible to ensure that the emergence time of the seeds is consistent, and the emergence is neat and smooth. do it.

When sowing in fields with high soil humidity, since the seed outlet 11 of the sowing pipe 1 is suspended relative to the soil surface, it can avoid the sowing pipe 1 being blocked by the soil, and the seeds are sown on the ground, and then passed through the sowing pipe 1 The linear cover soil structure that moves together can carry out linear cover soil on the seeds sown on the ground to complete the sowing. Because this method can prevent the sowing tube 1 from being blocked by soil in fields with high soil humidity, and the linear cover The covering method of the soil structure does not affect the regular distribution of the sown seeds, so in fields with high soil moisture, it can not only have a better emergence rate, but also ensure that the seeds emerge at the same time, and the emergence is neat and in rows.

When sowing in a field with uneven terrain (such as a hilly area), at a lower position on the field surface, the sowing tube 1 is a certain distance from the ground, and the seeds are sown on the ground, and the linear cover soil structure enters relatively shallow below the ground; on the field surface At a higher position, the seeding pipe 1 is close to the ground and does not penetrate into the soil or slightly into the soil, and the seeds are sown on the ground or slightly into the soil. The linear cover soil structure enters relatively deep below the ground, but because the linear cover soil structure passes through the soil. The discharged soil forms a linear gully parallel to the sowing path of the seeding tube 1, and the discharged soil covers the broadcasted seeds to realize the covering of the seeds, so the amount of covering soil for the seeds depends on the structure of the linear covering soil. As the linear soil cover structure is a linear soil discharge, the soil displacement is uniform and relatively small, so the depth of the linear cover soil structure below the ground has a very small impact on the soil displacement, so it can be realized Fields with uneven terrain can achieve a better emergence rate, and at the same time ensure that the emergence time of the seeds is consistent, and the emergence of the seeds is neat and in rows.

Preferably, in order to enable the seeding tube 1 to sow seeds on the ground surface under various conditions of terrain flatness, the height h of the seed outlet 11 from the ground should be set at 5 cm to 10 cm. In this embodiment, h is 7 cm.

The specific structural form of the sowing tube 1 is not limited. As a specific embodiment, the lower end of the sowing tube 1 is arc-shaped, and the port surface 111 of the seed outlet 11 is inclined upward (as shown in FIG. 2 ). Show). The structural form of the sowing tube 1 can effectively prevent the seed outlet 11 of the sowing tube 1 from entering the soil and being blocked.

There may be various specific structural forms of the linear soil covering structure, and in this embodiment, the linear soil covering structure is a rake 2 .

As a specific implementation, the tooth rake 2 includes:

The connecting rod 21 is fixedly connected with the seeding pipe 1;

There are at least two rake teeth 22 , one end of the rake teeth 22 is fixedly connected to the connecting rod 21 , and the other end extends downward to contact the ground.

The above tooth harrow 2 structure, on the one hand, can realize linear covering of soil through the elongated raking tines 22. The linear covering of soil can not only realize the covering of the sown seeds, but also reduce the amount of soil discharged due to the height of the terrain. It can avoid that seeds are piled up together to make seedling emergence uneven, and the elongated rake teeth 22 are not easy to stick to mud; 2 The outer periphery or the gap between the rake teeth 22 can pass through smoothly, so as to avoid the impact on the covering of seeds due to hanging grass and soil clods, etc., when it is used in fields with more weeds or more compacted fields like southern red soil The effect is particularly obvious. In addition, the rake teeth 22 extend downward to contact with the ground, which can ensure that the rake teeth 22 discharge soil to cover the seeds when sowing. Before applying the above-mentioned sowing and covering device to fields with different terrains and/or humidity conditions, the positional relationship between the rake tines 22 and the soil surface can be pre-adjusted according to the specific conditions of the field, so as to achieve better soil discharge Cover with soil.

The specific shape of the rake tine 22 is not limited, as long as it can discharge and cover soil in a linear manner. In this embodiment, the rake teeth 22 are in an "S" shape. The structure extending backward in an "S" shape can make the rake teeth 22 difficult to hang grass and soil clods.

If the distance between the two ends of the rake teeth 22 in the horizontal direction is too small, it is possible that the seeds will not fall on the front of the tooth rake 2, so that the covering of the seeds cannot be realized; and if the two ends of the rake teeth 22 are in the vertical direction If the distance is too small, it is possible to get stuck in grass or clods of soil, so that it cannot work normally. Therefore, preferably, the distance M between the two ends of the rake teeth 22 in the horizontal direction and the distance in the vertical direction H is not less than 10cm. In this embodiment, the distance M in the horizontal direction and the distance H in the vertical direction between the two ends of the rake teeth 22 are both 14 cm.

The material and cross-sectional shape of the rake teeth 22 are not limited, as long as they have sufficient hardness and strength. In this embodiment, the rake teeth 22 are steel bars. The cross-section of the steel bar is generally circular, and the steel bar material and the tooth harrow with a circular cross-section are not easy to cause sticky mud, and can successfully cover the seeds of small-grain crops when the soil humidity is high. The diameter of the rake teeth 22 should not be too large or too small. If the diameter of the rake teeth 22 is too large, the amount of soil removal and covering is relatively large, and the effect of removing soil and covering soil is equivalent to that of the existing flat scraping type soil covering device. Planar soil discharge cannot realize linear soil discharge; if the diameter of the rake teeth 22 is too small, the strength cannot be guaranteed on the one hand, and the soil discharge volume will be too small to realize soil covering on the other hand. Preferably, the rake teeth 22 are steel bars with a diameter of 0.8 cm to 1.5 cm. This diameter range can not only ensure the strength of the rake tines 22, but also realize linear soil discharge and cover. In this embodiment, the rake teeth 22 are steel bars with a diameter of 1 cm.

The toothed rake 2 can be a two-toothed or multi-toothed rake. In this embodiment, the toothed rake 2 is a three-toothed rake, and the middle rake 22 is connected to the connecting rod 21 and the sowing pipe 1. Junction. In this way, the tines 22 on both sides of the three-toothed harrow can evenly cover the seeds sown by the seeding tube 1 respectively, and the amount of covered soil is sufficient and even, so as to ensure a good emergence rate and uniformity of emergence.

In the above-mentioned three-tooth rake, the distance d between each of the rake teeth 22 is preferably 2 cm to 4 cm, and in this embodiment, d is 3 cm.

In order to test the application effect of the utility model product in the field, select three large field pieces more than 1.5 mu in different landforms, denoted as I, II, III respectively, and take sesame seeds as test object (about 0.25kg/mu of seeding rate). Each field is divided into two treatments, A and B: for treatment A, connect the "sower and soil covering device" of the present embodiment to the seed bin of the small-grain crop seeder through a plastic hose, and set the tail end of the sowing pipe 7cm away from the ground; for treatment B , there is no linear soil discharge structure, only the sowing pipe is connected to the seed bin of the small-grain crop seeder through a hose, and the tail end of the sowing pipe can be inserted into the soil layer as far as possible to sow the seeds into the soil layer. The emergence of sesame was investigated 7 days after sowing. The survey of seedling emergence adopts the sample survey method, that is, three representative 1m ² sample plots are selected for each field, and the number of sesame seedlings (trees/m ² ) is investigated, and then the seedlings are thinned according to the specification of 10 cm spacing between plants, and the remaining sesame seedlings after thinning That is, it reflects the uniformity of seedling emergence (the more remaining seedlings, the better the effect of seedling emergence). See Table 1 for the seedling emergence of A and B treatments.

Table 1. Sesame seedling emergence of each treatment in the test (2015)

It can be seen from Table 1 that the A treatment using the sowing and covering device in this embodiment can ensure a better emergence rate in the three fields, the average number of emergence is 66/m ² , and the uniformity of emergence is better. It is 28 trees/m ² , ensuring the basic number of seedlings in the field. However, the seedling emergence effect of B treatment was not stable, the average number of seedlings was 42/m ² , the sesame seedlings in the field were not uniform, and the basic seedling number in the field could not be guaranteed.

The above test can further illustrate that this embodiment can achieve better emergence rate in fields with different terrains, and at the same time ensure that the emergence time of seeds is consistent, and the emergence of seeds is neat and in rows.

Example 2

As shown in Figure 1, the present embodiment provides a kind of seeder for small grain crops, comprising:

Rotary tiller 4;

The seed bin 3 is fixedly connected with the rotary tiller 4 through a bracket; and

The sowing cover device described in Example 1.

The above-mentioned seeder for small grain crops, since the seed outlet 11 of the sowing tube 1 is suspended relative to the soil surface, the seeds are sown on the ground or shallowly sown on the ground when sowing, and then the linear covering soil connected to the rear of the sowing tube 1 The structure forms a linear gully on the soil to cover the seeds falling on the soil in a linear shape to complete the sowing, which can successfully complete the sowing under different flatness terrains and/or different soil moisture, and achieve better emergence effect, and this method of sowing and covering the soil will not make the seeds distributed in the soil too scattered and have different depths, so that it can achieve a better germination rate under different flatness terrains and/or different soil moisture levels, while ensuring that the seeds The emergence time of the seedlings was consistent and the seedlings emerged neatly and in rows.

As a specific implementation manner, the seeder for small grain crops of the present embodiment also includes a fertilizer bin 5 and a fertilizing pipe communicated with the fertilizer bin 5, the fertilizer bin 5 is located above the rotary tiller 4, respectively connected to the The rotary tiller 4 and the seed bin 3 are fixedly connected by a bracket. Therefore, the seeder for small-grain crops in this embodiment can fertilize urgently and sow seeds, realizes the integration of fertilization and seeding, has a simple structure, powerful functions, and a wide range of applications.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (13)

1. a kind of sowing blinding device is it is adaptable to be arranged on fine grain crop seeder it is characterised in that including：

Sowing pipe (1), including entering kind of mouth and go out kind of a mouth (11), described enter kind of mouth and fine grain crop seeder seed cabin (3) Connection, described go out kind of mouth (11) vacantly arrange with respect to soil face；

Wire blinding structure, is moved together with described sowing pipe (1), by being formed on soil and described sowing pipe (1) sowing The mode in the parallel wire gully in path, promotes seed to described sowing pipe (1) whereabouts on soil for the soil to carry out blinding.

2. sowing blinding device according to claim 1 is it is characterised in that described wire blinding structure is connected to described sowing On pipe (1).

3. according to claim 1 sowing blinding device it is characterised in that described go out kind of mouth (11) be arranged at apart from ground At the height of 5cm～10cm.

4. sowing blinding device according to claim 1 is it is characterised in that the lower end of described sowing pipe (1) is curved, and institute The port surface (111) stating out kind of a mouth (11) tilts upward.

5. sowing blinding device according to claim 1 is it is characterised in that described wire blinding structure is tooth harrow (2).

6. sowing blinding device according to claim 5 is it is characterised in that described tooth harrow (2) includes：

Connecting rod (21), is fixedly connected with described sowing pipe (1)；

At least two rake teeths (22), one end of described rake teeth (22) is fixedly connected with described connecting rod (21), and the other end is to downward Extend and contact with ground.

7. sowing blinding device according to claim 6 is it is characterised in that described rake teeth (22) is in " S " shape.

8. according to claim 6 sowing blinding device it is characterised in that described rake teeth (22) two ends in the horizontal direction and The distance of vertical direction is all not less than 10cm.

9. sowing blinding device according to claim 6 is it is characterised in that described rake teeth (22) is diameter 0.8cm～1.5cm Reinforcing bar.

10. according to claim 5 sowing blinding device it is characterised in that described tooth harrow (2) be three tooth harrows, middle rake teeth (22) it is connected to the junction above with described sowing pipe (1) for the described connecting rod (21).

11. sowing blinding devices according to claim 10 are it is characterised in that the distance between each described rake teeth (22) is 2cm～4cm.

A kind of 12. fine grain crop seeders are it is characterised in that include：

Rotary cultivator (4)；

Seed cabin (3), is fixedly connected with described rotary cultivator (4) by support；And

Sowing blinding device any one of claim 1-11.

13. according to claim 12 fine grain crop seeder it is characterised in that also include fertilizer bin (5) and with described The fertilising pipe that fertilizer bin (5) connects, described fertilizer bin (5) be located at described rotary cultivator (4) above, respectively with described rotary cultivator (4), Described seed cabin (3) is fixedly connected by support.