Rice dry field direct seeding and ridge planting method

Abstract

The application discloses a rice dry field direct seeding and powder ridge planting method, which comprises the following steps: (1) rice seeds are soaked in water for 12-24 hours for standby; (2) base fertilizer is evenly applied and the rice seeds are sowed in a dry rice field; (3) the rice field is subjected to powder ridge ploughing by using a powder ridge machine, and the ploughing depth is more than 25 cm; (4) after 3-5 days of powder ridge ploughing, water is poured into the rice field to wet the surface soil, so as to promote the germination and emergence of the rice seeds, the surface soil is kept wet, and the rice seeds are allowed to germinate and grow naturally; (5) when the rice seedlings are 12-15 cm high, a herbicide is sprayed to kill weeds; and (6) routine field management and harvesting methods are adopted for insect prevention, water pouring and harvesting. The rice dry field direct seeding and powder ridge planting method is characterized in that the base fertilizer and the rice seeds are sowed in a dry rice field, and then one-time powder ridge ploughing by using a powder ridge machine can complete the sowing and planting, the seedlings are uniform and strong, and the yield is high, so that the rice production method is high in efficiency and low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crop cultivation, and particularly relates to a planting method of dry field direct seeding of rice followed by ridge forming. BACKGROUND

[0002] Rice is one of the most important food crops for people. Traditional rice planting generally adopts the mode of seedling raising and transplanting, which needs to consume a large amount of labor. Therefore, people use the cultivation technology of direct seeding of rice. Direct seeding of rice is a cultivation mode of directly sowing seeds in a field without seedling raising and transplanting. Direct seeding of rice has the following advantages: 1. labor saving and effort saving. Direct seeding of rice eliminates the labor of traditional seedling raising and transplanting, saves seedbeds, and makes rice production simple and easy; 2. high yield. Direct seeding of rice is more conducive to low node tillering, reasonable allocation of ear stems, and high earing rate, so that the total ear number is large, and direct seeding of rice generally increases the yield by 5% compared with traditional transplanting of rice; 3. shortening of growth period. Direct seeding of rice eliminates the process of transplanting and replanting, so that the growth process is accelerated, and the growth period is generally shortened by 5-7 days compared with the same period of rice transplanting; 4. conducive to the development of large-scale production. Large-area direct seeding of rice can save a large amount of labor, alleviate the seasonal tension of labor, and has important significance for realizing the light, professional and large-scale production of rice production, and has a broad prospect of popularization.

[0003] Direct seeding according to the state of rice field soil can be divided into wet soil direct seeding of rice and dry field direct seeding of rice. Wet soil direct seeding of rice is to sow the seeds of rice after germination in the surface layer of soil by using a direct seeding machine after the rice field is irrigated and plowed. Wet soil direct seeding of rice has the following disadvantages: 1. a large amount of water is needed for irrigation and plowing, and it is impossible to sow and plant in time during the period of water resource shortage; 2. rice seeds are easily exposed on the surface and eaten by birds, resulting in seed loss; 3. when it rains after sowing, the sown rice seeds will be washed away by rain. Dry field direct seeding of rice, also known as early water pipe, is different from wet soil direct seeding of rice and rice field transplanting cultivation. It eliminates the procedures of water plowing, seedling raising and transplanting, and directly sows the seeds of rice after germination in the old rice field or dry field after dry plowing. Dry field direct seeding of rice has the following disadvantages: it needs to be plowed by using a plowing machine and then sowed by using a special direct seeding machine, which needs to invest in a special direct seeding machine, has low sowing and planting efficiency, and has high sowing and planting cost. SUMMARY

[0004] The present application aims to provide a dry field direct seeding and ridge forming planting method of rice. The dry field direct seeding and ridge forming planting method of rice is to spread base fertilizer and rice seeds in a dry rice field, and then to complete sowing and planting by using a ridge forming machine for one time of ridge forming tillage, so that the sowing and planting efficiency is high, the germination rate and tillering rate of rice seeds are high, the seedlings are uniform and the plants are strong, and the yield is high. The dry field direct seeding and ridge forming planting method of rice is a high-efficiency and low-cost rice production mode.

[0005] In order to achieve the object of the present application, the technical scheme adopted is:

[0006] A rice dry field direct sowing powder ridge planting method, which is based on the principle that rice seeds are sown on dry soil board field, and the rice seeds are buried in 1-3 cm soil by powder ridge vertical drill vertical cutting soil without disturbing the soil layer to normal germination and seedling emergence and prevent bird damage, creating the best production mode of rice dry sowing, labor saving, water saving, fertilizer saving and high yield; comprising the following steps:

[0007] (1) Soak the rice seeds in water for 12-24 hours, and the rice seeds do not sprout and turn white.

[0008] (2) Uniformly apply base fertilizer and sow rice seeds in dry rice field.

[0009] (3) Use powder ridge machinery to cultivate the above-mentioned rice field, and the cultivation depth is more than 25 cm, and the rice seeds are buried in 1-3 cm deep below the ground.

[0010] (4) After 3-5 days of powder ridge cultivation, irrigate the rice field to the surface soil wet to promote rice seed germination and seedling emergence, and keep the surface soil wet to let the rice seeds germinate and grow naturally.

[0011] (5) When the rice seedlings are 12-15 cm high, spray herbicide to kill weeds.

[0012] (6) Perform insect prevention, irrigation and harvesting according to the conventional rice field management and harvesting method.

[0013] Further preferably: the rice seeds are conventional rice seeds or hybrid rice seeds; when conventional rice seeds are used, 5-7 kg of seeds are sown per mu of rice field; when hybrid rice seeds are used, 2-2.5 kg of seeds are sown per mu of rice field.

[0014] Further preferably: the base fertilizer is organic fertilizer and compound fertilizer, 300-500 kg of organic fertilizer is applied per mu, and 20-30 kg of compound fertilizer is applied per mu.

[0015] The one-blade drill suspended ridge plough machine comprises a tractor, a ridge plough gearbox and a frame, the ridge plough gearbox is installed on the frame, a plurality of groups of output drive shafts are installed on the bottom of the ridge plough gearbox, the output drive shafts are connected with the gears in the ridge plough gearbox, each group of output drive shafts comprises two output drive shafts, each output drive shaft is connected with a one-blade ridge plough knife, the rotating directions of the two output drive shafts in each group of output drive shafts are opposite, the two output drive shafts in each group of output drive shafts respectively cut the soil from the two sides of the bottom of the ridge plough gearbox forward and inward, the installation position of the one-blade ridge plough knife should be adjusted to avoid the two one-blade ridge plough knives in adjacent groups meeting in the same direction position and interfering with each other during the rotation; the ridge plough gearbox is installed with a power input shaft; the front end of the frame is symmetrically provided with a side cantilever seat, and the front upper part of the frame is provided with a middle cantilever seat; the rear output drive shaft of the tractor is connected with the power input shaft through a universal coupling; the middle cantilever of the tractor is hinged with the middle cantilever seat through a pin shaft, and the hydraulic lifting arm of the tractor is hinged with the side cantilever seat through a pin shaft; the driver controls the work of the one-blade drill suspended ridge plough machine on the tractor driving position, and the middle cantilever and the two hydraulic lifting arms control the lifting of the frame; the one-blade ridge plough knife comprises a reverse L-shaped curved knife body, the top body of the knife body is horizontally arranged, the top body of the knife body is connected with the output drive shaft, the vertical body of the knife body has a large radius at the top and a small radius at the bottom, that is, the distance from the rotating center is large at the top and small at the bottom, and the soil cutting side of the knife body is provided with an edge.

[0016] Further preferably, the knife surface of the knife body is provided with a transverse cutting knife, and the soil cutting side of the transverse cutting knife is also provided with an edge.

[0017] Further preferably, the output drive shaft and the knife body can be connected in a flange type or an inner hexagonal sleeve type. When connected in a flange type, the bottom of the output drive shaft is provided with a connecting flange, the top body of the knife body is provided with a bolt mounting hole, and a mounting bolt for fixed connection with the connecting flange is installed in the bolt mounting hole. When connected in an inner hexagonal sleeve type, the bottom of the output drive shaft is provided with a hexagonal shaft body, the top of the top body of the knife body is provided with an inner hexagonal sleeve matched with the hexagonal shaft body of the output drive shaft, the hexagonal shaft body and the inner hexagonal sleeve are both correspondingly provided with a pin shaft hole, and a limiting pin shaft for limiting the hexagonal shaft body and the inner hexagonal sleeve from sliding and loosening is installed in the pin shaft hole. The bottom of the output drive shaft can also be provided with a quadrangular shaft body, and the top of the top body of the knife body is provided with an inner quadrangular sleeve matched with the quadrangular shaft body of the output drive shaft.

[0018] Further preferably, nylon rubber sleeves are installed in the hinge holes of the intermediate suspension arm and the intermediate suspension arm base, and nylon rubber sleeves are also installed in the hinge holes of the hydraulic lifting arm and the side suspension arm base, and the pin shafts are respectively arranged in the corresponding nylon rubber sleeves. The nylon rubber sleeves can reduce the transmission of vibration when the one-cut drill powder ridge plough is used for ploughing, and improve the driving comfort.

[0019] Further preferably, the tractor is a tracked walking wheel type tractor or a wheeled tractor.

[0020] The rice dry field direct seeding powder ridge planting method has the following advantages:

[0021] 1. The rice dry field direct seeding powder ridge planting method is to uniformly spread base fertilizer and soaked non-budding rice seeds in the dry rice field, and then only one-time powder ridge ploughing is needed to complete the seeding and planting. The seeding and planting efficiency is high, and the seeding and planting cost is low. During the powder ridge ploughing, the rice seeds are shallowly buried in the soil, avoiding being exposed on the surface of the soil and being eaten by birds. The soil ploughed by the powder ridge plough has good air permeability and can keep warm and moist, thereby ensuring the germination rate of the rice seeds and enabling the rice to be seeded and planted during the period of water resource shortage. Since the base fertilizer and the rice seeds are mixed with the soil by one-time powder ridge ploughing, the base fertilizer has good effect, and no subsequent fertilization is needed. After the growth of the rice seeds, the root system is developed, the seedlings are uniform and the plants are strong, the tillering rate is high, and the side plants grow vigorously, thereby increasing the yield.

[0022] 2. The one-cut drill powder ridge plough is driven by a tractor. The power output shaft of the tractor drives the power input shaft of the powder ridge gear box, thereby providing power for the powder ridge gear box and driving the output drive shaft to rotate, so as to drive the one-cut drill powder ridge plough to rotate and work. The power is strong. The cutter body of the one-cut drill powder ridge plough is in an inverted L-shaped arc shape. The top section of the cutter body is horizontally arranged and connected with the output drive shaft. The vertical section of the cutter body has a large radius at the top and a small radius at the bottom, i.e., the distance from the rotating center is large at the top and small at the bottom. The cutting side of the cutter body is provided with a cutting edge. The cutting resistance of the cutter is small, the energy consumption is low, the wear of the ploughing machinery is small, the ploughing efficiency is high, the rice seeds can be brought into the soil by 1-3 cm, the probability of the rice seeds floating on the surface of the soil can be reduced, and the base fertilizer and the rice seeds can be uniformly spread in the rice field, and then one-time powder ridge ploughing can be completed to achieve seeding and planting. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic diagram of the one-cut drill powder ridge plough;

[0024] Figure 2 FIG. 3 is a schematic diagram of the installation relationship between the hydraulic lifting arm and the side suspension arm base;

[0025] Figure 3 FIG. 4 is a schematic diagram of the installation relationship between the one-cut drill powder ridge plough and the powder ridge transmission box;

[0026] Figure 4 is a structural schematic diagram of a one-blade powder ridge plow;

[0027] Figure 5 is a top view schematic diagram of Figure 4 ;

[0028] Figure 6 is a growth state diagram of seedlings of a rice dry field direct seeding powder ridge planting for one week;

[0029] Figure 7 is a performance diagram of rice root systems of the experimental group and the control group;

[0030] Figure 8 is a performance diagram of rice seed germination and seedling emergence;

[0031] The name corresponding to the serial number in the figure is:

[0032] 1, tractor, 2, rear output drive shaft, 3, universal coupling, 4, middle suspension arm, 5, nylon rubber sleeve, 6, pin shaft, 7, middle suspension arm seat, 8, power input shaft, 9, powder ridge gear box, 10, rack, 11, output drive shaft, 12, connecting flange, 13, mounting bolt, 14, one-blade powder ridge plow, 15, side suspension arm seat, 16, hydraulic lifting arm, 17, blade edge, 18, bolt mounting hole, 19, inner hexagonal sleeve, 20, limit pin shaft, 21, pin shaft hole, 22, transverse cutter, 23, cutter body. DETAILED DESCRIPTION

[0033] In order to make the technical solutions and advantages of the present application clearer, the present technical solution will be described clearly and completely below in conjunction with examples.

[0034] Example 1

[0035] The following steps can be used to complete the rice dry field direct seeding powder ridge planting:

[0036] (1) Soak the rice seeds in warm water for 12 hours, making sure that the rice seeds do not sprout and turn white, and prepare for use.

[0037] (2) Evenly apply base fertilizer and broadcast rice seeds in the dry rice field.

[0038] (3) Use the powder ridge machine to plow the above-mentioned rice field, with a plowing depth of more than 25 cm, and the rice seeds are buried 1-3 cm deep in the ground.

[0039] (4) After 3 days of powder ridge plowing, irrigate the rice field to wet the surface soil to promote rice seed germination and seedling emergence, and keep the surface soil wet to allow the rice seeds to germinate and grow naturally.

[0040] (5) When the rice seedlings are 12-15 cm high, spray herbicides to kill weeds.

[0041] (6) The insect prevention, irrigation and harvesting are carried out according to the conventional paddy field management and harvesting mode.

[0042] The paddy seeds are conventional paddy seeds, 5 kg of which is spread in each mu of paddy field; the base fertilizer is organic fertilizer and compound fertilizer, 500 kg of the organic fertilizer is applied in each mu, and 30 kg of the compound fertilizer is applied in each mu.

[0043] Example 2

[0044] The paddy dry field direct seeding and powder ridge planting can be completed by the following steps:

[0045] (1) The paddy seeds are soaked in warm water for 20 hours, and the paddy seeds are not allowed to sprout and germinate, and are prepared for use.

[0046] (2) The base fertilizer is uniformly applied in the dry paddy field, and the paddy seeds are sown.

[0047] (3) The above paddy field is ploughed by the powder ridge machine, the ploughing depth is more than 25 cm, and the paddy seeds are buried in the ground at a depth of 1-3 cm.

[0048] (4) After 4 days of powder ridge ploughing, the paddy field is irrigated to the surface soil wet, the paddy seeds are promoted to germinate and sprout, and the surface soil is kept wet, so that the paddy seeds are naturally germinated and grown.

[0049] (5) When the paddy seedlings are 12-15 cm high, the herbicide is sprayed to kill weeds.

[0050] (6) The insect prevention, irrigation and harvesting are carried out according to the conventional paddy field management and harvesting mode.

[0051] The paddy seeds are conventional paddy seeds, 5 kg of which is spread in each mu of paddy field; the paddy seeds are conventional paddy seeds, 6 kg of which is spread in each mu of paddy field.

[0052] The base fertilizer is organic fertilizer and compound fertilizer, 400 kg of the organic fertilizer is applied in each mu, and 25 kg of the compound fertilizer is applied in each mu.

[0053] Example 3

[0054] The paddy dry field direct seeding and powder ridge planting can be completed by the following steps:

[0055] (1) The paddy seeds are soaked in warm water for 24 hours, and the paddy seeds are not allowed to sprout and germinate, and are prepared for use.

[0056] (2) The base fertilizer is uniformly applied in the dry paddy field, and the paddy seeds are sown.

[0057] (3) The above paddy field is ploughed by the powder ridge machine, the ploughing depth is more than 25 cm, and the paddy seeds are buried in the ground at a depth of 1-3 cm.

[0058] (4) After 5 days of ridge tillage, water is poured into the rice field to wet the surface soil to promote the germination and emergence of rice seeds, and the surface soil is kept wet to allow the rice seeds to germinate naturally.

[0059] (5) When the rice seedlings are 12-15 cm high, spray herbicide to kill weeds.

[0060] (6) Insect prevention, irrigation and harvesting are carried out according to the conventional rice field management and harvesting method.

[0061] The rice seeds are conventional rice seeds; when conventional rice seeds are used, 7 kg of rice seeds are applied per mu of rice field.

[0062] The base fertilizer is organic fertilizer and compound fertilizer, 350 kg of organic fertilizer is applied per mu, and 25 kg of compound fertilizer is purchased and applied per mu.

[0063] Example 4

[0064] The following steps can be used to complete the dry field direct seeding of rice:

[0065] (1) Soak the rice seeds in warm water for 12 hours, make sure the rice seeds do not sprout and turn white, and prepare for use.

[0066] (2) Apply base fertilizer and broadcast rice seeds evenly in the dry rice field.

[0067] (3) Use ridge tillage machinery to till the above-mentioned rice field, the tillage depth is more than 25 cm, and the rice seeds are buried 1-3 cm deep in the ground.

[0068] (4) After 3-5 days of ridge tillage, water is poured into the rice field to wet the surface soil to promote the germination and emergence of rice seeds, and the surface soil is kept wet to allow the rice seeds to germinate naturally.

[0069] (5) When the rice seedlings are 12-15 cm high, spray herbicide to kill weeds.

[0070] (6) Insect prevention, irrigation and harvesting are carried out according to the conventional rice field management and harvesting method.

[0071] The rice seeds are hybrid rice seeds; 2.5 kg of hybrid rice seeds are applied per mu of rice field.

[0072] The base fertilizer is organic fertilizer and compound fertilizer, 300 kg of organic fertilizer is applied per mu, and 20 kg of compound fertilizer is purchased and applied per mu.

[0073] The one-bit drill suspended ridge plough machine in the above embodiment comprises a tractor 1, a ridge plough gear box 9 and a machine frame 10. The tractor 1 is a caterpillar track walking wheel tractor. The ridge plough gear box 9 is installed on the machine frame 10. The bottom of the ridge plough gear box 9 extends to install a plurality of groups of output drive shafts 11. The output drive shafts 11 are connected with the gears in the ridge plough gear box 9. Each group of output drive shafts 11 comprises two output drive shafts 11. Each output drive shaft 11 is connected to install a one-bit drill ridge plough blade 14. The two output drive shafts 11 in each group of output drive shafts 11 rotate in opposite directions. The two output drive shafts 11 in each group of output drive shafts 11 respectively cut the soil from the two sides of the bottom of the ridge plough gear box 9 towards the front and inwards. The installation position of the one-bit drill ridge plough blade 14 should be adjusted to avoid the two adjacent one-bit drill ridge plough blades 14 meeting in the same direction position during the rotation work and interfering with each other. The ridge plough gear box 9 is installed to be provided with a power input shaft 8. The front end of the machine frame 10 is symmetrically provided with a side suspension arm seat 15. The front upper part of the machine frame 10 is provided with a middle suspension arm seat 7. The rear output drive shaft 2 of the tractor 1 is connected with the power input shaft 8 through a universal joint 3. The middle suspension arm 4 of the tractor 1 is hinged with the middle suspension arm seat 7 through a pin shaft 6. The hydraulic lifting arms 16 of the tractor 1 are hinged with the side suspension arm seat 15 through the pin shaft 6. The driver controls the work of the one-bit drill suspended ridge plough machine on the tractor driving position. The middle suspension arm 4 and the two hydraulic lifting arms 16 control the lifting of the machine frame 10. The one-bit drill ridge plough blade 14 comprises a blade body 23 in inverted L-shaped bending arc shape. The top body section of the blade body 23 is horizontally arranged and connected with the output drive shaft 11. The vertical body section of the blade body 23 has a rotation radius which is large at the top and small at the bottom, i.e. the distance from the rotation center is large at the top and small at the bottom. The soil cutting side of the blade body 23 is provided with a blade edge 17.

[0074] The blade surface of the blade body 23 is provided with a transverse cutter 22. The soil cutting side of the transverse cutter 22 is also provided with a blade edge.

[0075] The bottom of the output drive shaft 11 is provided with a hexagonal shaft section. The top of the top body section of the blade body 23 is provided with an internal hexagonal sleeve 19 matched with the hexagonal shaft section of the output drive shaft 11. The hexagonal shaft section and the internal hexagonal sleeve 19 are both correspondingly provided with pin shaft holes 21. The pin shaft holes 21 are installed with limiting pin shafts 20 limiting the hexagonal shaft section and the internal hexagonal sleeve 19 from sliding and loosening.

[0076] The hinged holes of the middle suspension arm 4 and the middle suspension arm seat 7 are installed with nylon rubber sleeves 5. The hinged holes of the hydraulic lifting arms 16 and the side suspension arm seat 15 are also installed with nylon rubber sleeves 5. The pin shafts 6 are respectively arranged in the corresponding nylon rubber sleeves 5.

[0077] In 2022, the inventor will test the technology of the application in the rice powder ridge cultivation test demonstration field in Fuming District, Yulin City, Guangxi. The rice variety is Yliangyou No. 1, the seed quantity and fertilizer quantity are the same, the powder ridge machine is also the same, and three kinds of powder ridge planting modes are set: 1. The rice dry field direct seeding powder ridge planting method (experimental group). 2. Powder ridge rice field water cultivation direct seeding, direct seeding after rice field irrigation and powder ridge tillage (CK1). 3. Rice dry field powder ridge + direct seeding machine seeding, rice dry field powder ridge, and direct seeding machine seeding after powder ridge tillage (CK2).

[0078] Seeding and planting efficiency, the experimental group is better than CK1 and CK2, because of the rice dry field powder ridge tillage, small pieces of soil will be produced, and the effect of direct seeding machine seeding after powder ridge tillage has a certain influence. 18 days after seeding, see attached Figure 7 , the root system and tillering plants of the experimental group are successively greater than CK2 and CK1. At the heading stage, the average number of effective panicles per mu in the experimental group was 22.67 million, the number of grains per panicle was 187.9, the number of grains per mu was 4260 million, the dry grain yield was 682.5 kg; the average number of effective panicles per mu in CK1 was 20.89 million, the number of grains per panicle was 168.6, the number of grains per mu was 3522 million, and the dry grain yield was 564.3 kg; the average number of effective panicles per mu in CK2 was 22.18 million, the number of grains per panicle was 174.7, the number of grains per mu was 3875 million, and the dry grain yield was 620.6 kg.

[0079] The above description is not a limitation of the application, and the application is not limited to the above examples. Within the scope of the application, changes, modifications, additions or substitutions made by those skilled in the art should be within the scope of the application.

Claims

1. A method for direct seeding and ridge planting of rice in dry fields, characterized in that: Includes the following steps: (1) Soak rice seeds in water for 12-24 hours until the rice seeds no longer sprout or show white tips, then set aside. (2) Apply base fertilizer evenly and sow rice seeds in the dry paddy field; (3) The above-mentioned paddy fields are tilled using a mulching machine to a depth of more than 25 cm, and the rice seeds are buried 1-3 cm below the ground. The mulching machine is a single-blade drill suspended mulching machine, which includes a tractor (1), a mulching gearbox (9) and a frame (10). The mulching gearbox (9) is installed on the frame (10). Multiple sets of output drive shafts (11) are installed at the bottom of the mulching gearbox (9). Each set of output drive shafts (11) includes two output drive shafts (11). Each output drive shaft (11) is connected to a single-blade drill mulching blade (14). The two output drive shafts in each set rotate in opposite directions. The two output drive shafts in each set cut the soil from the bottom sides of the mulching gearbox inward and outward. When installing the single-blade drill mulching blade, its installation position should be adjusted to avoid two adjacent single-blade drill mulching blades being in the same position when rotating. To avoid mutual interference, the gearbox (9) is equipped with a power input shaft (8); a side cantilever seat (15) is symmetrically arranged at the front end of the frame (10), and a middle cantilever seat (7) is arranged at the upper front part of the frame (10); the rear output drive shaft (2) of the tractor (1) is connected to the power input shaft (8) through a universal coupling (3); the middle cantilever (4) of the tractor (1) is hinged to the middle cantilever seat (7) through a pin (6). Then, the hydraulic lifting arm (16) of the tractor (1) is hinged to the side cantilever seat (15) through the pin (6); the one-cut drilling ditch knife (14) includes a knife body (23) in the shape of an inverted L-shaped arc. The top section of the knife body (23) is set horizontally. The top section of the knife body (23) is installed and connected to the output drive shaft (11). The rotation radius of the vertical section of the knife body (23) is larger at the top and smaller at the bottom. The cutting side of the knife body (23) is provided with a cutting edge (17). (4) After 3-5 days of mulching, irrigate the paddy field until the topsoil is moist to promote the germination and emergence of rice seeds, and keep the topsoil moist so that the rice seeds can germinate and grow naturally. (5) When the rice seedlings are 12-15 cm tall, spray herbicide to kill weeds; (6) Pest control, irrigation and harvesting are carried out in accordance with conventional paddy field management and harvesting methods.

2. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The rice seeds mentioned are either conventional rice seeds or hybrid rice seeds; when using conventional rice seeds, 5-7 jin are sown per mu of paddy field; when using hybrid rice seeds, 2-2.5 jin are sown per mu of paddy field.

3. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The base fertilizer used is organic fertilizer and compound fertilizer. 300-500 catties of organic fertilizer is applied per mu, and 20-30 catties of commercially available compound fertilizer is applied per mu.

4. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The blade (23) is provided with a transverse cutting blade (22) on its blade surface, and the cutting side of the transverse cutting blade (22) is also provided with a cutting edge.

5. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The bottom of the output drive shaft (11) is provided with a connecting flange (12), and the top section of the cutter body (23) is provided with a bolt mounting hole (18). The bolt mounting hole (18) is provided with a mounting bolt (13) for fixed connection with the connecting flange (12).

6. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The bottom of the output drive shaft (11) is provided with a hexagonal shaft body section, and the top of the top body section of the cutter body (23) is provided with an inner hexagonal sleeve (19) that matches the hexagonal shaft body section of the output drive shaft (11). The hexagonal shaft body section and the inner hexagonal sleeve (19) are both provided with corresponding pin holes (21). The pin holes (21) are equipped with a limiting pin (20) to limit the hexagonal shaft body section and the inner hexagonal sleeve (19) to prevent them from sliding and loosening.

7. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: Nylon sleeves (5) are installed in the hinge holes of the intermediate cantilever (4) and the intermediate cantilever seat (7), and nylon sleeves (5) are also installed in the hinge holes of the hydraulic lifting arm (16) and the side cantilever seat (15). The pins (6) are respectively inserted into the corresponding nylon sleeves (5).

8. The method for direct seeding and ridge planting of rice in dry paddy fields according to claim 1, characterized in that: The tractor (1) mentioned above is a tracked wheeled tractor or a wheeled tractor.

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