Rice dry farming direct seeding planting equipment and planting method

Abstract

The invention relates to the technical field of rice planting, and particularly discloses a rice dry farming and direct seeding planting method which comprises the steps of soil loosening and soil preparation of a field; rice seeds are dressed, water storage ditches are formed in a field in the planting direction, a plurality of planting ditches are formed in a ridge body formed between every two adjacent water storage ditches, and hole sowing, soil covering and pressing are synchronously conducted through a rice dry farming direct sowing machine; performing pest control and water management after sowing until the rice is mature and harvested; the dry farming direct seeding machine comprises a plurality of seeding pipelines, conveying assemblies are arranged in the seeding pipelines, plough shovel pieces are arranged below the seeding pipelines, the plough shovel pieces are used for ploughing soil, the ploughed soil is guided to the rear portion of the plough shovel pieces by guide wings and covers seeds discharged from seed outlets, and a soil pressing assembly is used for pressing the soil covering the seeds downwards and pressing the soil into the soil. Hole sowing is carried out in the formed planting furrows; performing pest and disease management, fertilization management and water management after sowing until the rice is mature and harvested.

Description

Technical Field

[0001] The invention relates to the technical field of dryland direct seeding of rice, and in particular to dryland direct seeding of rice equipment and a planting method. Background Art

[0002] At present, there are certain differences in rice planting methods according to different rice planting areas. The traditional rice planting method mainly relies on paddy field irrigation. Although this method can ensure high and stable rice yields, it also has some obvious shortcomings: traditional paddy field planting requires a large amount of irrigation water, especially in areas with scarce water resources. This planting method is difficult to maintain the supply of irrigation water, and the rice transplanting operation in paddy fields requires a lot of manpower, which is labor-intensive and inefficient. Long-term paddy field planting will lead to soil salinization and compaction, affecting the fertility and structure of the soil. Therefore, the dryland direct seeding technology of rice has gradually been applied to the general planting of rice. The dryland direct seeding technology reduces the dependence on water resources and improves the planting efficiency by directly sowing seeds into dry land, while also reducing the incidence of diseases and insect pests.

[0003] The existing dryland direct seeding of rice only involves leveling and loosening the soil of the planting site, and largely ignores the soil structure's requirements for the growth of dryland direct seeding of rice. The rice has poor resistance to lodging during growth, and the flat planting field still requires overall irrigation of the field. Although the use of drip irrigation pipes can save water to a certain extent, the overall cost and maintenance cost of laying drip irrigation pipes are high. Summary of the invention

[0004] The purpose of the present invention is to provide a dryland direct seeding rice planting device and a planting method to solve the problems in the prior art, such as the poor lodging resistance of rice during growth, the poor water management and the technical problems of cost control due to the existing dryland direct seeding rice largely ignoring the growth requirements of soil structure after dryland direct seeding of rice.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A method for direct seeding rice in dryland farming comprises the following specific steps: Step 10: loosen the soil of the plowed field and prepare the land according to the requirements of dryland rice cultivation; Step 20, the rice seeds are mixed with a seed dressing agent, and then a water storage ditch is opened on the field along the planting direction by a rice dryland direct seeding machine in cooperation with a tractor, and a plurality of planting furrows are opened on the ridge body formed between two adjacent water storage furrows, and hole sowing, soil covering and pressing are performed simultaneously in the process of opening the planting furrows; Step 30: After sowing, carry out pest and disease control and water management until the rice is ripe and ready for harvest.

[0006] As a preferred solution of the present invention, the moisture management includes: At the beginning of sowing, after the ridges have cracks, water is poured into the water storage ditch, and the watering height is lower than the height of the ridges. After the rice reaches the three-leaf stage, water is intermittently poured into the water storage ditch and then allowed to dry naturally, and the fields are left idle for several times. In the later stage of rice growth, the fields are irrigated and drained, which includes pouring water into the water storage ditch, and draining the water after the water fully reaches the surface of the ridge to keep the fields moist.

[0007] As a preferred embodiment of the present invention, during land preparation according to the requirements of dryland rice planting, the soil in the ridge is fertilized by rotary tillage, and the depth of fertilization is greater than the depth of the planting furrow.

[0008] As a preferred embodiment of the present invention, hole seeding, soil covering and soil tamping are carried out during the process of opening the planting furrows, so that the soil height in the planting furrows after soil tamping is lower than the surface height of the ridge body.

[0009] The present invention provides a planting device for the above-mentioned dryland rice direct seeding planting method, comprising: A plurality of sowing pipes, each of which has a seed inlet formed above, a conveying assembly disposed inside the sowing pipe, a plowing shovel disposed below the sowing pipe, the plowing shovel having two mirror-symmetrical plowing surfaces, an outlet pipe of the sowing pipe disposed on the back of the plowing shovel, the outer edge of the plowing surface being reversely curved upward and extending to the rear of the plowing surface to form a guide wing, and the seed outlet of the outlet pipe being located below the middle of the two guide wings; A connecting bracket, on which a plurality of the sowing pipes are arranged at equal intervals; A plurality of soil pressing assemblies are arranged on the connecting bracket at equal intervals and correspond one to one with the plurality of sowing pipes; The plowshare moves along the sowing direction to plow the soil, and the plowed soil is guided to the rear of the plowshare by the guide wing to cover the seeds discharged from the seed outlet, and the soil pressing assembly is used to press down the soil covering the seeds.

[0010] As a preferred solution of the present invention, the conveying assembly includes a transmission shaft and a plurality of driving gears arranged on the transmission shaft, the plurality of driving gears are arranged one by one at the inner top of the sowing pipe, a driven gear is arranged inside the sowing pipe near the outlet pipe, the driving gear and the driven gear are connected by a transmission belt, and receiving plates are distributed at equal intervals on the transmission belt, and the receiving plates are obliquely connected to the transmission belt; Both ends of the transmission shaft are rotatably connected to the connecting bracket respectively, and the transmission shaft is driven to rotate by a servo motor arranged on the connecting bracket.

[0011] As a preferred solution of the present invention, the soil pressing assembly includes an arc-shaped support arm, a pressure plate is provided at the bottom of the arc-shaped support arm, a horizontal guide rod is provided at the top of the arc-shaped support arm, a guide sleeve matched with the horizontal guide rod is provided on the connecting bracket, a rod body portion of the horizontal guide rod connected to the arc-shaped support arm protrudes from the guide sleeve, and a spring is sleeved on the rod body portion of the horizontal guide rod protruding from the guide sleeve; The other end of the horizontal guide rod away from the arc-shaped support arm protrudes from the guide sleeve and is connected to a driving part, and the driving part is used to drive the horizontal guide rod to reciprocate axially in the guide sleeve under the cooperation of the spring.

[0012] As a preferred solution of the present invention, the pressure plate includes a bottom plate, wing plates are arranged on both sides of the bottom plate, and the connection between the wing plates and the bottom plate is an arc-shaped curved surface convex outward.

[0013] As a preferred solution of the present invention, a clamping set is sleeved on the sowing pipe, the clamping set is connected to the sowing pipe through an adjusting nut, and the guide sleeve is horizontally arranged on the clamping set.

[0014] As a preferred solution of the present invention, a rib is provided on the top of the receiving plate, the surface size of the rib is half of the surface size of the seed inlet, and when the receiving plate rotates to the bottom of the seed inlet, the rib just contacts the bottom of the seed inlet; the rib is made of soft silicone material.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The soil planting method provided by the present invention can ensure that during the dryland direct seeding process, a water layer covering the planting field is not established during the entire growth cycle of rice. Instead, water is stored independently of the rice hole seeding position, and soil infiltration water is continuously supplied to the rice direct seeding position. While ensuring the soil permeability at the rice planting position, the water required for rice growth can be taken into account.

[0016] The planting equipment provided by the present invention can realize rice sowing, soil covering and pressing at the same time, and can make the rice fully contact with the soil in the early stage of rice growth, thereby improving the emergence rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a sowing channel provided with a soil compacting assembly according to an embodiment of the present invention; Figure 3 The figure is a schematic diagram of the cross-sectional structure of a sowing channel according to an embodiment of the present invention.

[0019] The numbers in the figure represent the following: 10- sowing pipe; 11- seed inlet; 20- conveying assembly; 30- plow shovel; 40- outlet pipe; 41- seed outlet; 50- connecting bracket; 60- soil pressing assembly; 70- clamping kit; 21- transmission shaft; 22- driving gear; 23- transmission belt; 24- driven gear; 25- receiving plate; 26- retaining edge; 31- plow surface; 32- guide wing; 61-arc support arm; 62-horizontal guide rod; 63-guide sleeve; 64-spring; 65-wing plate; 66-pressure plate; 67-bottom plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] This embodiment provides a method for direct seeding rice in dryland farming, comprising the following specific steps: Step 10: loosen the soil of the plowed field and prepare the land according to the requirements of dryland rice cultivation; Step 20, the rice seeds are mixed with a seed dressing agent, and then a water storage ditch is opened on the field along the planting direction by a rice dryland direct seeding machine in cooperation with a tractor, and a plurality of planting furrows are opened on the ridge body formed between two adjacent water storage furrows, the number of rows of planting furrows on each ridge body is 4-6, and hole sowing, soil covering and pressing are performed synchronously in the process of opening the planting furrows; Step 30: After sowing, carry out pest and disease control and water management until the rice is ripe and ready for harvest.

[0022] Specifically, sowing time: It is best to sow when the daily average temperature is stably above 12℃, generally from April 10th to 15th, when the weather is cold at the end and warm at the beginning, on sunny days.

[0023] Sowing amount: The sowing amount for conventional rice is about 4.5kg / mu, and 4 to 5 grains are sown per hole; the sowing amount for hybrid rice is about 1.5kg / mu, and 2 to 3 grains are sown per hole (hybrid rice).

[0024] Germination and sowing: Dry the seeds for 1 day before soaking, then soak them in fungicide and water for 48 hours, drain them, keep them warm and germinate them until they are white, then spread them out for sowing. When sowing, you need to adjust the seeding amount and hole distance of the seeder, put the buds to be sown in the seed storage box, and sow them in ridges without missing any seeds.

[0025] Disease control: During the rice growing period, focus on the prevention and control of seedling blight, sheath blight, rice blast and rice false smut.

[0026] Pest control: During the rice growing period, focus on controlling pests such as the chilo suppressalis, yellow stem borer, rice leaf folder, rice planthopper and rice thrips.

[0027] The water management includes: in the early stage of sowing, after cracks appear on the ridge body, water is poured into the water storage ditch, and the watering height is lower than the height of the ridge body; After the rice reaches the three-leaf stage, water is intermittently poured into the water storage ditch and then allowed to dry naturally, and the fields are left idle for several times. In the late growth stage of rice, the fields are irrigated and drained, which includes pouring water into the water storage ditch and draining the water after the water fully reaches the surface of the ridge to keep the fields moist. Water is cut off 6 to 10 days before harvest.

[0028] In the process of land preparation according to the requirements of dryland rice cultivation, the soil in the ridge is fertilized by rotary tillage, and the depth of fertilization is greater than the depth of the planting furrow.

[0029] In the process of opening the planting furrow, hole sowing, soil covering and soil compaction are carried out so that the soil height in the planting furrow after soil compaction is lower than the surface height of the ridge body.

[0030] In the process of land preparation according to the requirements of dryland rice cultivation, the soil on the ridge is fertilized by rotary tillage. Of course, in the actual dryland rice production and planting process, furrowing, hole sowing and fertilization can be carried out simultaneously.

[0031] Utilizing the precision hole direct seeding machine for rice with simultaneous furrowing and ridge-building and fertilization in the field, furrowing and ridge-building, fertilization and sowing can be completed simultaneously, and fertilizer can be applied quantitatively and evenly to the densely rooted areas of rice below the surface, reducing the volatilization and loss of effective ingredients in fertilizer and ensuring that the fertilizer is fully absorbed by rice.

[0032] Fertilizing at the same time as sowing means that there is no need to apply fertilizer again during the entire rice growth period, which reduces the number of fertilization times and the labor required, and is beneficial to improving the farming efficiency of large-scale growers.

[0033] In the process of dryland rice hole sowing in this embodiment, since the hole sowing method is adopted during the furrow opening process, and the surface height of the furrow after pressing the soil is lower than the height of the ridges on both sides, the soil of the ridges will flow into the planting furrow under the action of irrigation and soil loss, and then flow to the roots of rice during the growth of rice, play a role in supporting the rhizomes of rice, and improve the lodging resistance of rice.

[0034] Furthermore, the water storage ditch irrigation method adopted in this embodiment can avoid the loss of fertilizers in the soil.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a dryland direct seeding planting device for the above-mentioned field, which is used to realize the dryland direct seeding planting of rice, including: A plurality of sowing pipes 10 are provided, each of which has a seed inlet 11 formed above, a conveying assembly 20 disposed inside the sowing pipe 10, a plow shovel member 30 disposed below the sowing pipe 10, the plow shovel member 30 having two mirror-symmetrical plow surfaces 31, the plow surfaces 31 being specifically streamlined curved surfaces, and the connection between the two plow surfaces 31 forming a plow blade for breaking the soil.

[0036] An outlet pipe 40 of the sowing pipe 10 is arranged on the back side of the plow shovel member 30 . The outer edge of the plow surface 31 is curved upward and extends to the rear of the plow surface 31 to form a guide wing 32 . The seed outlet 41 of the outlet pipe 40 is located below the middle of the two guide wings 32 .

[0037] The connecting bracket 50 has a plurality of sowing pipes 10 arranged at equal intervals on the connecting bracket 50. In this embodiment, it is only described that the plurality of sowing pipes 10 are connected through the connecting bracket 50, and there is no specific design of the overall frame structure connected to the tractor.

[0038] A plurality of soil compacting assemblies 60 are arranged at equal intervals on the connecting bracket 50 or connected to the sowing pipe 10 at one time, and correspond to the plurality of sowing pipes 10 one by one.

[0039] Among them, the conveying component 20 is used to convey the rice seeds entering from the seed inlet 11 to the outlet pipe 40, and then discharged from the seed outlet 41, and the plow shovel component 30 is pulled by a tractor as a whole to move along the sowing direction to plow the soil, and the plowed soil is guided to the rear of the plow shovel component 30 by the guide wing 32 to cover the seeds discharged from the seed outlet 41, and the soil pressing component 60 is used to press down the soil covering the seeds.

[0040] The planting equipment provided in this embodiment does not realize the traditional direct drilling to form planting holes, but plows the soil by linear movement of the plow shovel member 30, that is, plows the soil under the traction of a tractor, and then uses multiple sowing pipes 10 to sow holes at set positions.

[0041] The plowed soil will cover the hole sowing position under the action of the guide wings 32. The inner surface of the guide wings 32 and the surface of the plow shovel part 30 form a soil guide. The plow shovel part 30 is specifically a triangular prism.

[0042] Specifically, this embodiment provides a specific embodiment of a conveying assembly 20, which can accurately control the amount of seeds sown in each hole without causing damage to the seeds themselves: It includes a transmission shaft 21 and a plurality of driving gears 22 arranged on the transmission shaft 21 . The plurality of driving gears 22 are arranged one by one at the inner top of the sowing pipe 10 , so that the operation of a plurality of conveying assemblies 20 can be synchronously realized through one transmission shaft 21 .

[0043] A driven gear 24 is arranged inside the sowing pipe 10 near the outlet pipe 40, and the driving gear 22 and the driven gear 24 are connected by a conveying belt 23. On the conveying belt 23, there are evenly spaced receiving plates 25, and the receiving plates 25 are obliquely connected to the conveying belt 23.

[0044] Both ends of the transmission shaft 21 are rotatably connected to the connecting bracket 50 , and the transmission shaft 21 is driven to rotate by a servo motor disposed on the connecting bracket 50 .

[0045] This embodiment provides a soil compaction assembly 60 including: An arc-shaped support arm 61, a pressure plate 66 is provided at the bottom of the arc-shaped support arm 61, a horizontal guide rod 62 is provided at the top of the arc-shaped support arm 61, a guide sleeve 63 cooperating with the horizontal guide rod 62 is provided on the connecting bracket 50, the horizontal guide rod 62 is connected to the rod body part of the arc-shaped support arm 61 protruding from the guide sleeve 63, and a spring 64 is sleeved on the rod body part of the horizontal guide rod 62 protruding from the guide sleeve 63.

[0046] The other end of the horizontal guide rod 62 away from the arc-shaped support arm 61 protrudes from the guide sleeve 63 and is connected to a driving part. The driving part can specifically be a crankshaft structure, one end of which is connected to a motor. At this time, the reciprocating motion of the horizontal guide rod 61 is similar to the reciprocating motion of the piston cylinder of a car engine. The driving part is used to drive the horizontal guide rod 62 to reciprocate axially in the guide sleeve 63 with the cooperation of the spring 64.

[0047] Furthermore, when the soil pressing assembly 60 is connected to the sowing channel 10, due to its reciprocating motion, the vibration it generates can also be transmitted to the sowing pipe 10, thereby keeping the sowing pipe 10 in a vibrating state, thereby preventing the seeds in the sowing pipe from being retained at the seed inlet 11 or the seed outlet 41.

[0048] The purpose is to suppress the soil in the planting trench by the reciprocating arc-shaped support arm 61 during the reciprocating motion.

[0049] Among them, the pressure plate 66 is matched with the size and shape of the plowed planting furrow. In order to be able to shape the soil at the edge of the planting furrow, the pressure plate 66 in this embodiment includes a bottom plate 67, and wing plates 65 are arranged on both sides of the bottom plate 67. The connection between the wing plate 65 and the bottom plate 67 is an arc-shaped curved surface convex outward.

[0050] In this embodiment, in order to adjust the degree of soil compression of the pressing plate 66 in the planting furrow, the arc-shaped support arm 61 is designed to be movable and adjustable, and a clamping set 70 is provided on the upper sleeve of the sowing pipe 10. The clamping set 70 is specifically a hollow pipe structure that can match the shape of the sowing pipe 10. The clamping set 70 is connected to the sowing pipe 10 through an adjusting nut, and the guide sleeve 63 is horizontally arranged on the clamping set 70. Its position structure can be set according to actual design requirements.

[0051] The top of the receiving plate 25 in this embodiment is provided with a rib 26, and the surface size of the rib 26 is half of the surface size of the seed inlet 11, and when the receiving plate 25 rotates to the bottom of the seed inlet 11, the rib 26 just contacts the bottom of the seed inlet 11, so that the amount of material received in a single time, that is, the amount of rice seeds received in a single time, can be determined by the distance between the rib 26 and the next receiving plate 25.

[0052] Both sides of the receiving plate 25 here can contact the inner wall of the sowing pipe 10.

[0053] The retaining edge 26 in this embodiment is made of soft silicone material, which can be elastically deformed, so that the rice seeds entering will not be damaged when the material is connected and the seed inlet 11 is closed.

[0054] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A method for direct seeding rice in dryland farming, characterized in that: The specific steps include: Step 10: loosen the soil of the plowed field and prepare the land according to the requirements of dryland rice cultivation; Step 20, the rice seeds are mixed with a seed dressing agent, and then a water storage ditch is opened on the field along the planting direction by a rice dryland direct seeding machine in cooperation with a tractor, and a plurality of planting furrows are opened on the ridge body formed between two adjacent water storage furrows, and hole sowing, soil covering and pressing are performed simultaneously in the process of opening the planting furrows; Step 30: After sowing, carry out pest and disease control and water management until the rice is ripe and ready for harvest.

2. A method for direct seeding rice in dryland farming according to claim 1, characterized in that: The moisture management includes: At the beginning of sowing, after the ridges have cracks, water is poured into the water storage ditch, and the watering height is lower than the height of the ridges. After the rice reaches the three-leaf stage, water is intermittently poured into the water storage ditch and then allowed to dry naturally, and the fields are left idle for several times. In the later stage of rice growth, the fields are irrigated and drained, which includes pouring water into the water storage ditch, and draining the water after the water fully reaches the surface of the ridge to keep the fields moist.

3. A method for direct seeding rice in dryland farming according to claim 1, characterized in that: In the process of land preparation according to the requirements of dryland rice cultivation, the soil in the ridge is fertilized by rotary tillage, and the depth of fertilization is greater than the depth of the planting furrow.

4. A method for direct seeding rice in dryland farming according to claim 1, characterized in that: In the process of opening the planting furrow, hole sowing, soil covering and compaction are carried out so that the soil level in the planting furrow is lower than the surface level of the ridge.

5. A rice dryland direct seeding planting device used in the rice dryland direct seeding planting method according to claim 1, characterized in that: include: A plurality of sowing pipes (10), each of which has a seed inlet (11) formed above the sowing pipe (10), a conveying assembly (20) arranged inside the sowing pipe (10), a plowshare (30) arranged below the sowing pipe (10), the plowshare (30) having two mirror-symmetrical plow surfaces (31), an outlet pipe (40) of the sowing pipe (10) arranged on the back side of the plowshare (30), the outer edge of the plow surface (31) being curved upward and extending to the rear of the plow surface (31) to form a guide wing (32), and the seed outlet (41) of the outlet pipe (40) being located below the middle of the two guide wings (32); A connecting bracket (50), wherein a plurality of the sowing pipes (10) are arranged at equal intervals on the connecting bracket (50); A plurality of soil compacting assemblies (60) are arranged at equal intervals on the connecting bracket (50) and correspond one-to-one to the plurality of sowing pipes (10); The plowshare member (30) moves along the sowing direction to plow the soil, and the plowed soil is guided by the guide wings (32) to the rear of the plowshare member (30) to cover the seeds discharged from the seed outlet (41), and the soil pressing assembly (60) is used to press down the soil covering the seeds.

6. The dryland direct seeding equipment for rice according to claim 5, characterized in that: The conveying assembly (20) comprises a transmission shaft (21) and a plurality of driving gears (22) arranged on the transmission shaft (21); the plurality of driving gears (22) are arranged one by one at the inner top of the sowing pipe (10); a driven gear (24) is arranged inside the sowing pipe (10) near the outlet pipe (40); the driving gear (22) and the driven gear (24) are connected via a transmission belt (23); receiving plates (25) are distributed at equal intervals on the transmission belt (23); and the receiving plates (25) are obliquely connected to the transmission belt (23); Both ends of the transmission shaft (21) are rotatably connected to the connection bracket (50), and the transmission shaft (21) is driven to rotate by a servo motor arranged on the connection bracket (50).

7. The dryland rice direct seeding equipment according to claim 5, characterized in that: The soil pressing assembly (60) comprises an arc-shaped support arm (61), a pressure plate (66) is arranged at the bottom of the arc-shaped support arm (61), a horizontal guide rod (62) is arranged at the top of the arc-shaped support arm (61), a guide sleeve (63) matched with the horizontal guide rod (62) is arranged on the connecting bracket (50), a rod body portion of the horizontal guide rod (62) connected to the arc-shaped support arm (61) protrudes from the guide sleeve (63), and a spring (64) is sleeved on the rod body portion of the horizontal guide rod (62) protruding from the guide sleeve (63); The other end of the horizontal guide rod (62) away from the arc-shaped support arm (61) protrudes from the guide sleeve (63) and is connected to a driving part, wherein the driving part is used to drive the horizontal guide rod (62) to axially reciprocate in the guide sleeve (63) with the cooperation of the spring (64).

8. The dryland rice direct seeding equipment according to claim 7, characterized in that: The pressing plate (66) comprises a bottom plate (67), and wing plates (65) are provided on both sides of the bottom plate (67), wherein the connection between the wing plates (65) and the bottom plate (67) is an outwardly convex arc surface.

9. The dryland rice direct seeding equipment according to claim 7, characterized in that: A clamping sleeve (70) is sleeved on the sowing pipe (10), the clamping sleeve (70) is connected to the sowing pipe (10) via an adjusting nut, and the guide sleeve (63) is horizontally arranged on the clamping sleeve (70).

10. The dryland direct seeding equipment for rice according to claim 6, characterized in that: A retaining edge (26) is provided on the top of the material receiving plate (25), the surface size of the retaining edge (26) is half the surface size of the seed inlet (11), and when the material receiving plate (25) rotates to the bottom of the seed inlet (11), the retaining edge (26) just contacts the bottom of the seed inlet (11); the retaining edge (26) is made of soft silicone material.

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