CN214070559U - No-tillage reseeding and pipe burying combined machine for grassland - Google Patents

Abstract

The utility model discloses a no-tillage after-seeding pipe burying combined machine for grassland, which comprises a frame, a suspension bracket, a seed fertilizer box, a water and fertilizer preserving agent box, a pipe burying disc furrow opener, a big disc furrow opener, a small disc furrow opener, a seed conveying pipe, a fertilizer conveying pipe, a land wheel, a drip irrigation pipe bracket, a transmission mechanism and a pressing mechanism. When the device works, the large and small disc openers open seed ditches on the ground, the land wheel enables seeds and chemical fertilizers to respectively flow into the seed conveying pipe and the fertilizer conveying pipe through the transmission mechanism, and the seed fertilizers fall into the ditches from the two pipelines under the action of gravity to complete the seeding and fertilizing processes. The pipe burying disc furrow opener further widens the seed ditch to finish the water and fertilizer retaining agent spreading and drip irrigation pipe laying operation. The compacting mechanism fills the soil back into the seed trench and compacts the soil. The machine can complete operations such as ditching, root cutting, reseeding, fertilizing, water and fertilizer retention agent scattering, drip irrigation pipe burying, soil filling, pressing and the like at one time, greatly reduces the grinding times of machines and tools on grasslands, and meets the technical requirements of no-tillage reseeding of natural grasslands.

Description

No-tillage reseeding and pipe burying combined machine for grassland

Technical Field

The utility model relates to the field of agricultural machinery, concretely relates to no-tillage reseeding and pipe burying combined machine for grasslands.

Background

The ecological situation of the natural grassland is improved, the sustainable development is realized, and the ecological environment-friendly grassland is a major problem which is generally concerned by countries in the world at present. Chinese grassland spans northern border, and is an important type of land ecosystem. Has multiple functions such as important ecological function, production function and the like, and is an important barrier for national security and ecological security in China. For a long time, the ecological environment of the grassland is fragile, large-area degradation and desertification are caused due to the influence of natural factors such as excessive grazing, artificial grass destroying, wasteland reclamation, disorderly digging and raking, climate drought and the like, the biodiversity in the environment is reduced, and the balance mechanism of the ecological system of the grassland is weakened. Although the situation is treated for many years, the ecological environment situation of the grassland in China is still very severe. The three types of deterioration, desertification and salinization of grasslands are still serious. The area is continuously enlarged, and the tasks of original ecological environment treatment and construction are far from the task. In order to improve and restore natural grassland vegetation and ecological functions thereof, the ecological environment of grasslands is restored and protected, and sustainable development of animal husbandry is guaranteed. For years, related departments summarize a whole set of measures for rejuvenating and updating the grassland in practice, such as adopting no-tillage reseeding technology. From the whole situation, single application technologies such as artificial forage grass base planting, aerial seeding grass planting, shallow seeding grassland improvement, after-seeding grassland improvement, fence sealing and the like are more, but the overall construction quality is not high, and comprehensive construction technologies and mechanical applications which are assembled and integrated according to local conditions are lacked, such as combined operation machines of after-seeding, fertilization, suppression, buried drip irrigation pipelines and the like, and a seeding opener matched with the existing after-seeding machine generally has wider ditching gaps, is easy to turn turf, damages a grassland and causes desertification of the grassland, and the opener can only be used for after-seeding operation. In order to accelerate the construction of grassland and the treatment of 'three-way', at present, aiming at the construction work of grassland, the grassland department provides comprehensive mechanical treatment measures of grassland reseeding, fertilizing, pressing, water-saving irrigation, grazing in a rotation way or mechanized harvesting, wherein a furrow opener matched with the pasture reseeding machine is an important working part, and the development and the provision of a combined operation machine for realizing multiple operations of reseeding, fertilizing, burying a drip irrigation pipeline, pressing and the like are urgently needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a no-tillage reseeding and pipe burying combined machine for grasslands, which can realize combined operations of reseeding, fertilizing, agent scattering, pipe burying, pressing and the like in grasslands, can obviously improve work efficiency, save labor force and does not damage grasslands.

The to-be-solved technical problem of the utility model is realized by following structure: a no-tillage reseeding and pipe burying combined machine for a grassland, which comprises a seed fertilizer box (1), a suspension bracket (2) and a frame (3),

a suspension bracket (2) is arranged above the front part of the frame (3) and is used for tractor traction suspension;

a seed and fertilizer box (1) is arranged above the middle part of the rack (3), the interior of the seed and fertilizer box (1) is divided into a first space and a second space, the first space is used for containing grass seeds, the second space is used for containing fertilizer, a seed conveying pipe (7-5) is arranged at the bottom of the seed and fertilizer box (1) corresponding to the first space, a fertilizer conveying pipe (7-6) is arranged corresponding to the second space, and a chain wheel (19) is arranged on the side wall of the box body of the seed and fertilizer box (1);

a water and fertilizer retention agent box (20) is arranged above the middle part of the rack (3) and at the rear side of the seed fertilizer box (1) and used for containing water and fertilizer retention agents, a water and fertilizer application pipeline (10) is arranged at the bottom of the water and fertilizer retention agent box (20), and a chain wheel (19) is arranged on the side wall of the water and fertilizer retention agent box (20);

a drip irrigation pipe support (17) is arranged above the rear part of the rack (3) and at the rear side of the water and fertilizer retention agent box (20), drip irrigation pipes (9-8) are arranged on the drip irrigation pipe support (17), a drip irrigation pipe pipeline (11) is arranged at the lower part of the drip irrigation pipe support (17), and the drip irrigation pipes (9-8) penetrate through the upper end opening part of the drip irrigation pipe pipeline (11) and penetrate out of the lower end opening part;

a large and a small disc furrow openers (7) are arranged below the front part of the rack (3), a large and a small disc furrow opener pressurizing device (4) is arranged between the rack (3) and the large and the small disc furrow openers (7), and each large and small disc furrow opener (7) comprises an upright post (7-1), a large disc (7-2), a small disc (7-3) and a bearing seat (7-4); the vertical column (7-1) is fixedly connected with the rack (3), a bearing seat (7-4) is arranged on one side, close to the lower end of the vertical column (7-1), perpendicular to the advancing direction of the machine body, of the vertical column (7-1), a large disc (7-2) is arranged on the bearing seat (7-4), a bearing seat (7-4) is arranged on the other side, perpendicular to the advancing direction of the machine body, of the lower end of the vertical column (7-1), a small disc (7-3) is arranged on the bearing seat (7-4), the outer edges of the large disc (7-2) and the small disc (7-3) are intersected at a position close to the ground, the included angle of the planes of the two discs is 8-11 degrees, the rear portion of the small disc (7-3) is outwards turned, and the deviation angle of the planes and the advancing direction of the machine is 6-8 degrees; when the machine works, the big disc (7-2) cuts the turf, the grass roots are cut off, and the small disc (7-3) stretches the turf to be thin, so that seeding and fertilizing are facilitated; the lower ports of the seed conveying pipe (7-5) and the fertilizer conveying pipe (7-6) are respectively arranged at the rear side of the upright post (7-1) and between the large disc (7-2) and the small disc (7-3), and the fertilizer and the seeds fall into the ditch from the two pipelines by self weight to complete the sowing and fertilizing processes;

a land wheel (8) is arranged below the middle part of the frame (3), and transmission mechanisms (18) are respectively arranged between the wheel axle of the land wheel (8) and chain wheels (19) on the seed manure box (1) and the water and fertilizer retention agent box (20); when the seed and fertilizer sowing machine works, the land wheel (8) drives the chain wheel (19) to work through the transmission mechanism (18), the chain wheel (19) drives the discharging device in the box body to discharge seeds and fertilizer from the seed and fertilizer box (1), and the seeds and the fertilizer flow downwards along the seed conveying pipe (7-5) and the fertilizer conveying pipe (7-6) under the action of gravity and fall into a seed bed;

a pipe burying disc furrow opener (9) is arranged on the rear side of the large and small disc furrow openers (7) below the rear part of the rack (3), a pipe burying disc furrow opener pressurizing device (5) is arranged between the rack (3) and the pipe burying disc furrow opener (9), and the pipe burying disc furrow opener (9) comprises a furrow opener disc (9-1), a disc bearing seat (9-2), a bracket (9-3), a water and fertilizer conveying and preserving agent port (9-4), a drip irrigation pipe port (9-5), a pipe burying depth adjusting plate (9-6) and a burying depth adjusting bolt (9-7); the bracket (9-3) and the frame

(3) Fixedly connected, a disc bearing seat (9-2) is arranged on the bracket (9-3), two furrow opener discs (9-1) are arranged on the disc bearing seat (9-2), the two furrow opener discs (9-1) are symmetrically arranged at two sides of the bracket (9-3), the outer edges of the two discs are intersected at a position close to the ground, the included angle of the planes of the two discs is 9-11 degrees, the upper part of the bracket (9-3) is provided with a water and fertilizer delivery and retention agent port (9-4), the pipeline (10) for applying the water and fertilizer retention agent is butted with the water and fertilizer delivery and retention agent port (9-4), a drip irrigation pipe orifice (9-5) is arranged at the rear side of the water and fertilizer conveying and preserving agent orifice (9-4), the drip irrigation pipe pipeline (11) is butted with the drip irrigation pipe orifice (9-5); a buried depth adjusting bolt (9-7) is arranged at the rear part of the support (9-3), the buried pipe depth adjusting plate (9-6) is fixed on the support (9-3) through the buried depth adjusting bolt (9-7), and the length of the buried pipe depth adjusting plate (9-6) extending downwards is adjusted by adjusting the screwing position of the buried depth adjusting bolt (9-7) and the buried pipe depth adjusting plate (9-6), so that the buried depth of the drip irrigation pipe (9-8) is adjusted; when the furrow opener works, the disc (9-1) of the furrow opener rolls forwards to expand the turf which is opened by the large and small disc furrow openers (7) in front to two sides and push soil to two sides to form a narrow ditch, and the water and fertilizer retention agent is applied along the pipeline for applying the water and fertilizer retention agent

(10) The drip irrigation pipes (9-8) flow into the bottom of the ditch through drip irrigation pipe pipelines (11) and are guided into the bottom of the ditch through pipe burying depth adjusting plates (9-6);

a pressing mechanism (14) is arranged on the rear side of the pipe-burying disc furrow opener (9) below the rear part of the rack (3), a pressing mechanism pressurizing device (15) is arranged between the pressing mechanism (14) and the rack (3), and the pressing mechanism (14) comprises a support rod (13) and a soil covering wheel (12); the supporting rod (13) is fixedly connected with the lower part of the rear part of the rack (3), and the lower end of the supporting rod (13) is provided with a soil covering wheel (12); the function of the soil-covering agent is to cover soil and compact seed ditches, prevent soil from weathering and has drought-resisting function. In addition, the compacting mechanism (14) can ensure that the seeds have certain compactness with the soil so as to facilitate the germination of the seeds, and also has the functions of crushing soil blocks and leveling the ground;

the soil covering wheel (12) comprises a rubber rim (12-1), a steel hub (12-2) and a shaft (12-3); the steel hub (12-2) is obliquely connected with the support rod (13) at a certain angle through the shaft (12-3), and the outer circumferential surface of the steel hub (12-2) is provided with a rubber rim

(12-1) pressing the soil by the inclined rubber rim (12-1) and covering the soil on the seedbed; the structure is suitable for being used in arid and windy areas, soil is dense after the seed ditches are compacted, seeds are close to subsoil, ventilation is prevented, moisture retention is facilitated, and the section of the outer edge of the rubber rim (12-1) is in a cylindrical single-rib shape.

The utility model discloses a theory of operation is: the machine is drawn by a tractor, before operation, drip irrigation pipes (9-8) are manually conveyed into a drip irrigation pipe pipeline (11) and penetrate out through drip irrigation pipe orifices (9-5) near a pipe burying disc furrow opener (9), and the tail ends of pipe burying depth adjusting plates (9-6) bend backwards and are buried into a ditch; during operation, a narrow ditch is firstly marked on the turf by the large disc (7-2) on the large and small disc furrow openers (7), the ditch is opened into a seed ditch with the width of about 3cm-5cm by the small disc (7-3) which inclines outwards, and the seed conveying pipe (7-5) and the fertilizer conveying pipe (7-6) are tightly attached to the rear inclined side surface of the disc, so that fertilizer and seeds fall into the ditch, and the ditching operation of the pipe burying disc furrow opener (9) at the rear side is facilitated. Then, the pipe burying disc furrow opener (9) continuously rolls forwards, firstly, water and fertilizer preserving agents are sown at the bottom of the ditch, and then the drip irrigation pipes (9-8) are pressed at the tail ends of the pipe burying depth adjusting plates (9-6) and buried in the ditch. Then the following soil covering wheel (12) rolls to cover the furrow edges on the seed bed and compact the soil. The ditching depth of the large and small disc ditchers (7) and the pipe burying disc ditchers (9) can be adjusted through the large and small disc ditcher pressurizing devices (4) and the pipe burying disc ditcher pressurizing devices (5), and the burying depth of the drip irrigation pipes (9-8) can be achieved by adjusting the extending length of the pipe burying depth adjusting plates (9-6).

The utility model has the advantages that: 1. the machine can simultaneously complete multiple operations of ditching, root cutting, seeding, fertilizing, applying water and fertilizer retention agents, burying drip irrigation pipes, pressing and the like, and greatly reduces the grinding times of machines on grasslands; 2. the depth of the embedded pipe of the machine can be adjusted according to the technical requirements; 3, the large and small disc furrow openers can ensure narrow furrowing and meet the agricultural technical requirements of no-tillage reseeding in natural grasslands; 4. simple structure, the operation of being convenient for is suitable for the relatively poor enterprise processing preparation of pastoral area condition.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic view of a no-tillage reseeding and pipe burying combined machine for a grassland;

FIG. 2 is a schematic view of a large and small disk colter;

FIG. 3 is a side view of a large and small disk furrow opener;

FIG. 4 is a view taken along the line A in FIG. 2;

FIG. 5 is a schematic view of a construction of a pipe-burying disc furrow opener;

FIG. 6 is a rear elevation view of a pipe-burying disc furrow opener;

FIG. 7 is a partial view taken from the direction B of FIG. 1;

the reference numbers used in the drawings are as follows: 1 seed fertilizer box, 2 suspension bracket, 3 machine frame, 4-large disc furrow opener pressure device, 5 buried pipe disc furrow opener pressure device, 6 pull rod, 7-large disc furrow opener, 7-1 upright post, 7-2 large disc, 7-3 small disc, 7-4 bearing seat, 7-5 seed conveying pipe, 7-6 fertilizer conveying pipe, 8 land wheel, 9 buried pipe disc furrow opener, 9-1 furrow opener disc, 9-2 disc bearing seat, 9-3 support, 9-4 water and fertilizer retaining agent conveying port, 9-5 drip irrigation pipe port, 9-6 buried pipe depth adjusting plate, 9-7 buried depth adjusting bolt, 9-8 drip irrigation pipe, 10 water and fertilizer retaining agent applying pipeline, 11 drip irrigation pipe pipeline, 12 soil covering wheel, 12-1 rubber wheel rim, 12-2 steel wheel hub, 12-3 shaft, 13 supporting rods, 14 pressing mechanisms, 15 pressing mechanism pressurizing devices, 16U-shaped bolts, 17 drip irrigation pipe supports, 18 transmission mechanisms, 19 chain wheels and 20 water and fertilizer retention agent boxes.

Detailed Description

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the present invention is described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making more clear definitions of the protection scope of the present invention.

As shown in figure 1, the utility model provides a no-tillage reseeding and pipe burying combined machine for grasslands, which comprises a seed and fertilizer box 1, a suspension bracket 2 and a frame 3;

a suspension bracket 2 is arranged above the front part of the frame 3 and is used for tractor traction suspension;

a seed and fertilizer box 1 is arranged above the middle part of the frame 3, the interior of the seed and fertilizer box 1 is divided into a first space and a second space, the first space is used for containing grass seeds, the second space is used for containing fertilizer, a seed conveying pipe 7-5 is arranged at the bottom of the seed and fertilizer box 1 corresponding to the first space, a fertilizer conveying pipe 7-6 is arranged corresponding to the second space, and a chain wheel 19 is arranged on the side wall of the box body of the seed and fertilizer box 1;

a water and fertilizer retention agent box 20 is arranged above the middle part of the rack 3 and at the rear side of the seed fertilizer box 1 and used for containing water and fertilizer retention agents, a water and fertilizer application pipeline 10 is arranged at the bottom of the water and fertilizer retention agent box 20, and a chain wheel 19 is arranged on the side wall of the water and fertilizer retention agent box 20;

a drip irrigation pipe bracket 17 is arranged above the rear part of the rack 3 and at the rear side of the water and fertilizer retention agent box 20, drip irrigation pipes 9-8 are arranged on the drip irrigation pipe bracket 17, a drip irrigation pipe pipeline 11 is arranged at the lower part of the drip irrigation pipe bracket 17, and the drip irrigation pipes 9-8 penetrate through the upper end opening part of the drip irrigation pipe pipeline 11 and penetrate out from the lower end opening part;

as shown in fig. 1, 2, 3 and 4, a large and a small disk furrow opener 7 is arranged below the front part of the rack 3, a large and a small disk furrow opener pressurizing device 4 is arranged between the rack 3 and the large and the small disk furrow opener 7, and the large and the small disk furrow opener 7 comprises an upright post 7-1, a large disk 7-2, a small disk 7-3 and a bearing seat 7-4; the upright post 7-1 is fixedly connected with the frame 3, a bearing seat 7-4 is arranged on one side of the upright post 7-1 close to the lower end and perpendicular to the advancing direction of the machine body, a large disc 7-2 is arranged on the bearing seat 7-4, a bearing seat 7-4 is arranged on the other side of the lower end of the upright post 7-1 and perpendicular to the advancing direction of the machine body, a small disc 7-3 is arranged on the bearing seat 7-4, the outer edges of the large disc 7-2 and the small disc 7-3 are intersected at a position close to the ground, the included angle of the planes of the two discs is 8-11 degrees, the rear part of the small disc 7-3 is outwards turned, and the deviation angle of the plane and the advancing direction of the machine is 6-8 degrees; when the machine works, the big disc 7-2 cuts the turf open, the grass roots are cut off, and the small disc 7-3 opens the turf with a smaller width, so that sowing and fertilization are facilitated; the lower ports of the seed conveying pipe 7-5 and the fertilizer conveying pipe 7-6 are respectively arranged at the rear side of the upright post 7-1 and between the large disc 7-2 and the small disc 7-3, and fertilizer and seeds fall into the ditch from the two pipelines by self weight to complete the sowing and fertilizing processes;

as shown in fig. 1, a land wheel 8 is arranged below the middle part of the frame 3, and transmission mechanisms 18 are respectively arranged between the wheel axle of the land wheel 8 and chain wheels 19 on the seed manure box 1 and the water and fertilizer retention agent box 20; when the seed and fertilizer sowing machine works, the land wheel 8 drives the chain wheel 19 to work through the transmission mechanism 18, the chain wheel 19 drives the discharging device in the box body to discharge seeds and fertilizer from the seed and fertilizer box 1, and the seeds and the fertilizer flow downwards along the seed conveying pipe 7-5 and the fertilizer conveying pipe 7-6 under the action of gravity and fall into a seed bed;

as shown in fig. 5 and 6, a pipe burying disc furrow opener 9 is arranged at the rear side of a large and a small disc furrow openers 7 below the rear part of the rack 3, a pipe burying disc furrow opener pressurizing device 5 is arranged between the rack 3 and the pipe burying disc furrow opener 9, and the pipe burying disc furrow opener 9 comprises a furrow opener disc 9-1, a disc bearing seat 9-2, a bracket 9-3, a water and fertilizer conveying and preserving port 9-4, a drip irrigation pipe orifice 9-5, a pipe burying depth adjusting plate 9-6 and a pipe burying depth adjusting bolt 9-7; the support 9-3 is fixedly connected with the rack 3, a disc bearing seat 9-2 is arranged on the support 9-3, two furrow opener discs 9-1 are arranged on the disc bearing seat 9-2, the two furrow opener discs 9-1 are symmetrically arranged on two sides of the support 9-3, the outer edges of the two discs are intersected at a position close to the ground, the included angle of the planes of the two discs is 9-11 degrees, a water and fertilizer delivery and retention port 9-4 is arranged on the upper portion of the support 9-3, the water and fertilizer application and retention pipeline 10 is in butt joint with the water and fertilizer delivery and retention port 9-4, a drip irrigation pipe orifice 9-5 is arranged on the rear side of the water and fertilizer delivery port 9-4, and the pipe 11 is in butt joint with the drip irrigation pipe orifice 9-5; a buried depth adjusting bolt 9-7 is arranged at the rear part of the support 9-3, a buried pipe depth adjusting plate 9-6 is fixed on the support 9-3 through the buried depth adjusting bolt 9-7, and the length of the buried pipe depth adjusting plate 9-6 extending downwards is adjusted by adjusting the screwing position of the buried depth adjusting bolt 9-7 and the buried pipe depth adjusting plate 9-6, so that the buried depth of the drip irrigation pipe 9-8 is adjusted; when the furrow opener works, the disc 9-1 of the furrow opener rolls forwards to expand the turf which is opened by the disc furrow opener 7 with big and small front sides to two sides and push away soil to two sides to form a narrow furrow, the water and fertilizer retention agent flows into the bottom of the furrow along the pipeline 10 for applying the water and fertilizer retention agent, and the drip irrigation pipe 9-8 is led into the bottom of the furrow through the pipeline 11 of the drip irrigation pipe and the buried pipe depth adjusting plate 9-6;

as shown in fig. 1 and 7, a pressing mechanism 14 is arranged at the rear side of the pipe-burying disc furrow opener 9 below the rear part of the frame 3, a pressing mechanism pressurizing device 15 is arranged between the pressing mechanism 14 and the frame 3, and the pressing mechanism 14 comprises a support rod 13 and a soil covering wheel 12; the supporting rod 13 is fixedly connected with the lower part of the rear part of the frame 3, and the lower end of the supporting rod 13 is provided with a soil covering wheel 12; the function of the soil-covering agent is to cover soil and compact seed ditches, prevent soil from weathering and has drought-resisting function. In addition, the compacting mechanism 14 can make the seeds have certain compactness with the soil, so as to facilitate the germination of the seeds, and also has the functions of crushing soil blocks and leveling the ground;

the soil covering wheel 12 comprises a rubber rim 12-1, a steel hub 12-2 and a shaft 12-3; the steel wheel hub 12-2 is obliquely connected with the support rod 13 at a certain angle through the shaft 12-3, the rubber rim 12-1 is arranged on the outer circumferential surface of the steel wheel hub 12-2, and soil is extruded by the oblique rubber rim 12-1 and covered on a seedbed; the structure is suitable for being used in arid and windy areas, soil is dense after the seed ditches are compacted, seeds are close to subsoil, ventilation is prevented, moisture retention is facilitated, and the section of the outer edge of the rubber rim 12-1 is in a cylindrical single-rib shape.

Thus, it should be appreciated by those skilled in the art that while exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations and modifications can be made in accordance with the principles of the invention without departing from the spirit and scope of the invention, which is broadly defined and defined herein. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations and modifications.

Claims (5)

1. The utility model provides a no-tillage after-planting pipe laying combined machine in grassland, includes kind fertile case (1), mounted frame (2), frame (3), its characterized in that:

a suspension bracket (2) is arranged above the front part of the frame (3);

a seed and fertilizer box (1) is arranged above the middle part of the rack (3), the interior of the seed and fertilizer box (1) is divided into a first space and a second space, a seed conveying pipe (7-5) is arranged at the bottom of the seed and fertilizer box (1) corresponding to the first space, a fertilizer conveying pipe (7-6) is arranged corresponding to the second space, and a chain wheel (19) is arranged on the side wall of the box body of the seed and fertilizer box (1);

a water and fertilizer retention agent box (20) is arranged above the middle part of the rack (3) and at the rear side of the seed fertilizer box (1), a water and fertilizer application pipeline (10) is arranged at the bottom of the water and fertilizer retention agent box (20), and a chain wheel (19) is arranged on the side wall of the water and fertilizer retention agent box (20);

a drip irrigation pipe support (17) is arranged above the rear part of the rack (3) and at the rear side of the water and fertilizer retention agent box (20), drip irrigation pipes (9-8) are arranged on the drip irrigation pipe support (17), a drip irrigation pipe pipeline (11) is arranged at the lower part of the drip irrigation pipe support (17), and the drip irrigation pipes (9-8) penetrate through the upper end opening part of the drip irrigation pipe pipeline (11) and penetrate out of the lower end opening part;

a large and a small disc furrow openers (7) are arranged below the front part of the rack (3), a large and a small disc furrow opener pressurizing device (4) is arranged between the rack (3) and the large and the small disc furrow openers (7), and each large and small disc furrow opener (7) comprises an upright post (7-1), a large disc (7-2), a small disc (7-3) and a bearing seat (7-4); the upright post (7-1) and the frame (3) are fixedly connected to one side of the upright post (7-1) close to the lower end and perpendicular to the advancing direction of the machine body, a bearing seat (7-4) is arranged, a large disc (7-2) is arranged on the bearing seat (7-4), the other side of the lower end of the upright post (7-1) and perpendicular to the advancing direction of the machine body is provided with the bearing seat (7-4), a small disc (7-3) is arranged on the bearing seat (7-4), the outer edges of the large disc (7-2) and the small disc (7-3) are intersected at a position close to the ground, the included angle of the planes of the two discs is 8-11 degrees, the rear part of the small disc (7-3) is outwards turned, the plane is 6-8 degrees away from the advancing direction of the machine, the lower ports of the seed conveying pipe (7-5) and the fertilizer conveying pipe (7-6) are, is positioned between the large disc (7-2) and the small disc (7-3);

a land wheel (8) is arranged below the middle part of the frame (3), and transmission mechanisms (18) are respectively arranged between the wheel axle of the land wheel (8) and chain wheels (19) on the seed manure box (1) and the water and fertilizer retention agent box (20);

a pipe burying disc furrow opener (9) is arranged on the rear side of the large and small disc furrow openers (7) below the rear part of the rack (3), a pipe burying disc furrow opener pressurizing device (5) is arranged between the rack (3) and the pipe burying disc furrow opener (9), and the pipe burying disc furrow opener (9) comprises a furrow opener disc (9-1), a disc bearing seat (9-2), a bracket (9-3), a water and fertilizer conveying and preserving agent port (9-4), a drip irrigation pipe port (9-5), a pipe burying depth adjusting plate (9-6) and a burying depth adjusting bolt (9-7); the support (9-3) is fixedly connected with the frame (3), a disc bearing seat (9-2) is arranged on the support (9-3), two furrow opener discs (9-1) are arranged on the disc bearing seat (9-2), the two furrow opener discs (9-1) are symmetrically arranged at two sides of the bracket (9-3), the outer edges of the two discs are intersected at a position close to the ground, the included angle of the planes of the two discs is 9-11 degrees, the upper part of the bracket (9-3) is provided with a water and fertilizer delivery and retention agent port (9-4), the pipeline (10) for applying the water and fertilizer retention agent is butted with the water and fertilizer delivery and retention agent port (9-4), a drip irrigation pipe orifice (9-5) is arranged at the rear side of the water and fertilizer conveying and preserving agent orifice (9-4), the drip irrigation pipe pipeline (11) is butted with the drip irrigation pipe orifice (9-5); a buried depth adjusting bolt (9-7) is arranged at the rear part of the support (9-3), the buried pipe depth adjusting plate (9-6) is fixed on the support (9-3) through the buried depth adjusting bolt (9-7), and the length of the buried pipe depth adjusting plate (9-6) extending downwards is adjusted by adjusting the screwing position of the buried depth adjusting bolt (9-7) and the buried pipe depth adjusting plate (9-6), so that the buried depth of the drip irrigation pipe (9-8) is adjusted;

a pressing mechanism (14) is arranged on the rear side of the pipe-burying disc furrow opener (9) below the rear part of the rack (3), a pressing mechanism pressurizing device (15) is arranged between the pressing mechanism (14) and the rack (3), and the pressing mechanism (14) comprises a support rod (13) and a soil covering wheel (12); the supporting rod (13) is fixedly connected with the lower part of the rear part of the rack (3), and the lower end of the supporting rod (13) is provided with a soil covering wheel (12);

the soil covering wheel (12) comprises a rubber rim (12-1), a steel hub (12-2) and a shaft (12-3); the steel wheel hub (12-2) is obliquely connected with the support rod (13) at a certain angle through the shaft (12-3), and the outer circumferential surface of the steel wheel hub (12-2) is provided with a rubber rim (12-1).

2. The combined no-tillage reseeding and pipe burying machine for grasslands as claimed in claim 1, wherein: the included angle between the plane of the large disc (7-2) and the plane of the small disc (7-3) is 9.5 degrees, and the deflection angle between the plane of the small disc (7-3) and the advancing direction of the machine is 7 degrees.

3. The combined no-tillage reseeding and pipe burying machine for grasslands as claimed in claim 1, wherein: the included angle of the planes of the two furrow opener discs (9-1) is 10 degrees.

4. The combined no-tillage reseeding and pipe burying machine for grasslands as claimed in claim 1, wherein: the section of the outer edge of the rubber rim (12-1) is cylindrical and single-rib.

5. The combined no-tillage reseeding and pipe burying machine for grasslands as claimed in claim 1, wherein: the upright post (7-1) is fixedly connected with the rack (3) through a U-shaped bolt (16), the support (9-3) is fixedly connected with the rack (3) through the U-shaped bolt (16), and the support rod (13) is fixedly connected with the lower portion of the rear portion of the rack (3) through the U-shaped bolt (16).

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