A drip irrigation method and drip irrigation device for wheat cultivation in saline-alkali soil

Abstract

This invention discloses a drip irrigation method and device for planting wheat in saline-alkali soil. The method involves creating trenches on the soil surface, with each trench arranged evenly side-by-side. Several plants are planted within each trench, with the plants planted evenly along the length of the trench. During the planting process, a drip irrigation device is used to irrigate the plants. The drip irrigation device includes a drip irrigation pipe assembly, each comprising a drip irrigation pipe body, which is laid within the trench. This invention uses drip irrigation to supply water to the soil, ensuring adequate water supply to the crop roots during the critical growth period of wheat, utilizing the drip pipes laid within the trench. Salt is carried away by the water, and due to the high evaporation rate on the ridges, salt is continuously transported to the ridges, reducing the soil salinity within the trench. Water and fertilizer are concentrated within the trench, resulting in denser crop growth. By supplying water and removing salt, the method mitigates the damage of salinity to wheat, providing a locally favorable soil, water, and fertilizer environment for plant growth.

Description

Technical Field

[0001] This invention relates to the field of agricultural technology, and more specifically, to a drip irrigation method for planting wheat in saline-alkali soil, and also to a drip irrigation device. Background Technology

[0002] In the Bohai Rim low-lying plains of my country, arid and saline-alkali lands are widely distributed. Due to their unique climate and geological conditions, these areas have exceptionally high soil salinity, making them highly susceptible to salt return. This soil environment makes vegetation formation extremely difficult, resulting in a highly fragile ecosystem. In recent years, with the adjustment of national agricultural strategies and the increased emphasis on the development of arid and saline-alkali wheat production, how to successfully cultivate wheat in such a special environment has become an urgent problem to be solved in agricultural research and production.

[0003] However, the soil environment of arid and alkaline land poses a significant challenge to wheat growth. High salinity not only affects wheat germination, growth, and yield but can also negatively impact wheat quality. Traditional planting methods, such as flood irrigation, often fail to achieve ideal results in such soil conditions and lack sufficient water supply. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a drip irrigation method for planting wheat in saline-alkali fields, which can reduce water evaporation and adapt to planting in arid saline-alkali environments.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a drip irrigation planting method for saline-alkali wheat fields, wherein trenches are opened on the land surface, each trench is evenly arranged side by side, and several plants are planted in the trenches, with the plants in the trenches being planted evenly along the length of the trenches; during the planting process, a drip irrigation device is used to drip irrigate the plants, the drip irrigation device including a drip irrigation pipe assembly, the drip irrigation pipe assembly including a drip irrigation pipe body, and the drip irrigation pipe body being laid in the trenches.

[0006] Drip irrigation provides water to the soil throughout the wheat's growing season, ensuring adequate water supply to the crop roots via drip irrigation pipes laid in the furrows. Salt is carried away by the water; due to high evaporation rates on the ridges, salt is continuously transported to the ridges, reducing the soil salinity in the furrows. This concentrated water and fertilizer distribution within the furrows allows for denser crop growth. Furthermore, by supplying water and removing salt, the damage caused by salinity to the wheat is mitigated, and a favorable soil, water, and fertilizer environment is provided locally for the plants' growth.

[0007] The present invention also provides a drip irrigation device, including a drip irrigation tube assembly. The drip irrigation tube assembly includes a drip irrigation tube body, and a plurality of drip irrigation ports are provided on the lower side of the drip irrigation tube body. Each drip irrigation port is evenly distributed along the length direction of the drip irrigation tube body. The drip irrigation tube assembly also includes an expansion tube, at least a portion of which extends into the drip irrigation tube body. The expansion tube includes an expansion portion that can expand and deform outward to pressurize the drip irrigation liquid in the drip irrigation tube body.

[0008] The invention is further configured such that the expansion tube is a rigid tube, a plurality of air holes are formed on the outer periphery of the expansion section of the expansion tube, and an annular elastic sleeve is fitted on the outer periphery of the expansion section. The inner periphery of both ends of the elastic sleeve is sealed and bonded to the outer periphery of the expansion tube, and the elastic sleeve covers the air holes of the expansion section; the elastic sleeve can elastically expand outward.

[0009] The invention is further configured such that the expansion tube can be adjusted along the length of the drip irrigation tube body.

[0010] The invention is further configured such that a water-blocking plate is provided on the lower side of the inner wall of the drip irrigation pipe body, the water-blocking plate is arranged along the length direction of the drip irrigation pipe body, the cross-section of the water-blocking plate is arc-shaped, and each drip irrigation mask is placed inside; the water-blocking plate has a plurality of through holes extending vertically.

[0011] The invention is further configured such that the drip irrigation device also includes a water supply pipe, and a connecting pipe is connected between the water supply pipe and the drip irrigation pipe body. The connecting pipe is provided with a one-way valve, which is used for one-way flow towards the drip irrigation pipe body.

[0012] The present invention is further configured such that a connecting tube is provided between the first end of the drip irrigation tube body and the connecting tube, one side of the connecting tube is connected to the connecting tube, and the other side of the connecting tube is connected to the first end of the drip irrigation tube body; the expansion tube extends into the drip irrigation tube body from the second end of the drip irrigation tube body.

[0013] The present invention is further configured such that a driving device is provided at the second end of the drip irrigation tube body. The driving device includes an end cap one, an end cap two, and an elastic telescopic cover. The end cap one and the end cap two are respectively fixedly connected to the two ends of the elastic telescopic cover. The elastic telescopic cover can realize elastic telescopic adjustment. The end cap one is provided at the second end of the drip irrigation tube body.

[0014] The invention is further configured such that the expansion tube passes through end cap one and end cap two, and extends into the drip irrigation tube body from the second end of the drip irrigation tube body; the expansion tube is sealed and fixed to end cap two; the gap between the expansion tube and end cap one allows liquid to flow between the drip irrigation tube body and the elastic telescopic cover.

[0015] The present invention is further configured such that a fixing block 1 is fixedly connected to the outer side of the first end cap, a fixing block 2 is fixedly connected to the outer side of the second end cap, a driving rod is fixedly connected to the second fixing block, the driving rod includes a driving end, the driving end is telescopically adjustable, and is fixedly connected to the first fixing block.

[0016] The invention is further configured such that the end of the expansion tube is closed and extends into the connecting cylinder, the connecting cylinder is provided with a piston plate, the piston plate is piston-connected to the inner wall of the connecting cylinder, and can be piston-adjusted along the length of the connecting cylinder; the end of the expansion tube is connected to the piston plate; the piston plate has a plurality of flow holes, and an elastic diaphragm is provided on the side of the piston plate facing the first end of the drip irrigation tube, the middle part of the elastic diaphragm is fixedly connected to the piston plate, and the outer periphery of the elastic diaphragm can elastically cover the flow holes.

[0017] The present invention is further configured such that the drip irrigation device includes a water supply device, a fertilizer supply device, and a filter; the water supply device is connected to a water supply pipe and is used to supply drip irrigation water to the water supply pipe; the fertilizer supply device is connected to the water supply pipe and is used to supply fertilizer to the water supply pipe; the filter is located in the water supply pipe and is used to filter the drip irrigation water; the drip irrigation pipe assembly is connected to the water supply pipe and supplies water through the water supply pipe.

[0018] In summary, the present invention has the following beneficial effects:

[0019] Drip irrigation provides water to the soil during the critical growth stages of wheat, ensuring adequate water supply to the crop roots through drip irrigation pipes laid in the furrows. During drip irrigation, the water continuously washes the soil, effectively flushing it and dissolving some of the soil salts. The salts are carried away by the water, and since evaporation is high on the ridges, the salts are continuously transported to the ridges, reducing the soil salinity in the furrows. This results in less evaporation in the furrows, concentrated water and fertilizer, and denser crop growth. By supplying water and removing salt, the damage of salt and alkalinity to wheat is mitigated, and a favorable soil water and salt environment is provided locally for the surface plants.

[0020] By incorporating an expansion and pressurization device within the drip irrigation tube, the pressure of the drip irrigation fluid can be increased through a pneumatic expansion structure, thereby ensuring smooth drip irrigation and compensating for the increased internal pressure within the tube. Specifically, the expansion and pressurization device utilizes an expansion tube and an external air source. The expansion tube is fitted inside the drip irrigation tube, extending at least partially into it. One end of the expansion tube is connected to a high-pressure air source. When high-pressure air is introduced into the expansion tube, the expansion portion expands outward. This expansion compresses the inner cavity of the drip irrigation tube, pressurizing the drip irrigation fluid and allowing for smooth drip irrigation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a drip irrigation planting method for saline-alkali wheat fields in this embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of a drip irrigation device in this embodiment;

[0023] Figure 3 This is a schematic diagram of the drip irrigation pipe assembly in this embodiment;

[0024] Figure 4 This is a schematic diagram of the drip irrigation pipe body in this embodiment;

[0025] Figure 5 This is a schematic diagram of the expansion tube in this embodiment;

[0026] Figure 6 This is a schematic diagram of the structure of the drip irrigation pipe and the water-blocking plate in this embodiment;

[0027] Figure 7 This is a cross-sectional schematic diagram of the drip irrigation pipe and the water-blocking plate in this embodiment;

[0028] Figure 8 This is a schematic diagram of the connecting cylinder in this embodiment;

[0029] Figure 9 This is a schematic diagram of the drive device in this embodiment.

[0030] Reference numerals: 1. Land; 2. Trench; 3. Plant; 4. Drip irrigation pipe assembly; 41. Connecting pipe; 42. One-way valve; 43. Connecting cylinder; 44. Drip irrigation pipe body; 441. First end; 442. Second end; 45. Drip irrigation port; 46. Water baffle; 461. Through hole; 47. Fixing component; 5. Water supply pipe; 51. Water supply connector; 52. Filter section; 53. Fertilizer supply device; 54. Water supply device; 6. Expansion pipe; 61. Rigid pipe body; 62. Expansion section; 621. Air hole; 622. Elastic sleeve; 7. Drive device; 71. End cap one; 72. End cap two; 73. Elastic telescopic cover; 74. Fixing block one; 75. Fixing block two; 76. Drive rod; 77. Drive end; 8. Piston plate; 81. Flow hole; 82. Elastic diaphragm. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] This embodiment discloses a drip irrigation planting method for wheat fields in saline-alkali soil, suitable for saline-alkali and arid environments. Before planting wheat, trenches 2 are first dug on the surface of the land 1. The trenches 2 are evenly arranged side by side, forming ridges between adjacent trenches 2. The width of the trenches 2 is approximately 10-30cm. Wheat plants 3 are planted in the trenches 2. The wheat plants 3 can be planted in double rows or single rows in the trenches 2, and are evenly distributed along the length of the trenches 2. Figure 1 As shown.

[0034] During the planting process, a drip irrigation system is used to irrigate the plants 3. The drip irrigation system includes a drip irrigation pipe assembly 4, which includes drip irrigation pipe bodies 44. The number of drip irrigation pipe bodies 44 is matched with the number of furrows 2. Each furrow 2 is lined with a drip irrigation pipe body 44, which allows water to be dripped into the furrow 2 to supply the wheat with the water needed for growth. Furthermore, water-soluble fertilizer is added to the drip irrigation water, enabling integrated water and fertilizer management through drip irrigation.

[0035] The trenches 2 on the surface of land 1 have a certain depth. During drip irrigation, the water and fertilizer are directly supplied to the bottom of the trenches 2, and can penetrate into the soil through capillary action. However, the upper soil layer between the trenches 2 has relatively little moisture, which reduces water evaporation from the soil surface and thus reduces unnecessary water loss from the soil surface, thereby minimizing water evaporation and improving the efficiency of drip irrigation water use.

[0036] Meanwhile, drip irrigation provides water to the soil, ensuring adequate water supply to the crop roots during the critical growth stages of wheat, thanks to the drip pipes laid in the furrows. During drip irrigation, the water continuously washes the soil, effectively rinsing it and allowing some of the soil salts to dissolve in the water. This salt is carried away by the water, and since evaporation is high on the ridges, the salt is continuously transported to the ridges, reducing the soil salinity in the furrows. This results in less evaporation in the furrows, concentrated water and fertilizer, and denser crop growth. By supplying water and removing salt, the damage of salt and alkali to wheat is mitigated, and a favorable soil water and fertilizer environment is provided locally for plant growth.

[0037] Example 2

[0038] This embodiment discloses a drip irrigation device, referring to... Figure 2-9 As shown, the drip irrigation device is applicable to the planting method in Example 1.

[0039] Reference Figure 2As shown, the drip irrigation system includes a water supply pipe 5, a drip irrigation pipe assembly 4, a water supply device 54, a fertilizer supply device 53, and a filter. The water supply device 54 mainly consists of a water pump, a water tank, pipes, and other necessary components. It provides power through the water pump to supply water to the water supply pipe 5. The fertilizer supply device 53 mainly includes a water-fertilizer cylinder, a liquid pump, pipes, and necessary valves and other components. It mainly supplies fertilizer to the water supply pipe 5 and mixes the fertilizer into the water supply pipe 5, thus mixing the drip irrigation water and fertilizer to achieve integrated water and fertilizer supply.

[0040] The water supply device 54 is connected to the water supply pipe 5 and can supply drip irrigation water to the water supply pipe 5. The fertilizer supply device 53 is connected to the water supply pipe 5 and can supply fertilizer to the water supply pipe 5. The filter is installed on the water supply pipe 5 and can filter the drip irrigation water transported by the water supply pipe 5 to remove particulate impurities in the drip irrigation water, thereby preventing the drip irrigation pipe 44 from becoming clogged during the drip irrigation process.

[0041] The drip irrigation pipe group 4 is connected to the water supply pipe 5. The drip irrigation pipe group 4 includes several drip irrigation pipe bodies 44. The number of drip irrigation pipe bodies 44 is matched with the number of trenches 2. Drip irrigation pipe bodies 44 are laid in each trench 2. Drip irrigation can be delivered to the trench 2 through the drip irrigation pipe bodies 44 to supply the water required for wheat growth.

[0042] Several drip irrigation ports 45 are provided on the lower side of the drip irrigation pipe body 44. Each drip irrigation port 45 is evenly distributed along the length of the drip irrigation pipe body 44, allowing water to be dripped evenly onto the soil outside the drip irrigation pipe body 44. The dispersed distribution of the drip irrigation pipe body 44 allows water to be supplied to the soil evenly and dispersedly, realizing soil drip irrigation and integrated water and fertilizer treatment.

[0043] When the pressure inside the drip irrigation tube 44 is insufficient, the irrigation fluid cannot flow out from the drip outlet 45 of the drip irrigation tube 44, thus preventing the drip irrigation tube 44 from performing drip irrigation and causing the drip irrigation equipment to malfunction. In this embodiment, an expansion and pressurization device can be installed inside the drip irrigation tube 44. Through the structure of air pressure expansion, the pressure inside the drip irrigation tube 44 can be increased, thereby increasing the pressure of the irrigation fluid and enabling the irrigation fluid to drip smoothly, thus compensating for the pressure inside the drip irrigation tube 44.

[0044] The drip irrigation tubing assembly 4 also includes an expansion tube 6, which is fitted inside the drip irrigation tube body 44 and extends at least partially into it. One end of the expansion tube 6 is connected to a high-pressure air source. When the high-pressure air source is introduced into the expansion tube 6, the expansion portion of the expansion tube 6 can expand and deform outward. After expansion, the expansion portion can compress the inner cavity of the drip irrigation tube body 44, thereby pressurizing the drip irrigation fluid inside the drip irrigation tube body 44.

[0045] Reference Figures 2-5As shown, the expansion tube 6 is a rigid tube body 61 with a segmented structure, forming evenly spaced expansion sections 62. Several vents 621 are formed within the rigid tube body 61 inside the expansion tube 6, penetrating the outer wall of the tube body. Furthermore, an annular elastic sleeve 622 is fitted around the outer periphery of each expansion section 62, with its inner ends sealed to the outer periphery of the expansion tube 6, covering the vents 621 within the expansion section 62. A relatively closed chamber is formed between the elastic sleeve 622 and the rigid tube body 61, communicating with the inner cavity of the expansion tube 6 through the vents 621. When high-pressure gas is introduced into the expansion tube 6, the gas can enter between the elastic sleeve 622 and the rigid tube body 61 through the vents 621. The high-pressure gas compresses the elastic sleeve 622, causing it to elastically expand outwards. After the elastic sleeve 622 expands outward, it can generate a squeezing force inside the drip irrigation tube body 44, thereby increasing the internal pressure of the drip irrigation tube body 44. The increased pressure facilitates the flow of drip irrigation liquid out of the drip irrigation tube body 44, achieving smooth drip irrigation.

[0046] Reference Figure 6 , 7 As shown, a water-blocking plate 46 is provided on the lower inner wall of the drip irrigation pipe body 44. The water-blocking plate 46 has a strip-shaped structure and is arranged along the length of the drip irrigation pipe body 44. In the cross-sectional direction of the drip irrigation pipe body 44, the cross-section of the water-blocking plate 46 is arc-shaped, covering each drip irrigation port 45. Furthermore, the water-blocking plate 46 has several through holes 461 that extend vertically, so that the upper and lower sides of the water-blocking plate 46 can be in a relatively connected state.

[0047] When the expansion section 62 of the expansion tube 6 expands outward, the outer periphery of the expansion section 62 will increase, so that the outer periphery of the expansion section 62 roughly abuts against the inner wall of the drip irrigation tube body 44. The presence of the baffle plate 46 can prevent the expansion section 62 from completely blocking the drip irrigation port 45, ensuring that water can be supplied smoothly and normally from the drip irrigation port 45, thus achieving smooth drip irrigation.

[0048] When the expansion tube 6 expands outward, each expansion section 62 forms a roughly segmented structure on its outer periphery, allowing the expansion section 62 to abut against the inner wall of the drip irrigation pipe body 44. The diameter between two expansion sections 62 is smaller, so that the water in the drip irrigation pipe body 44 is mainly concentrated in the space between the two expansion sections 62.

[0049] The expansion tube 6 can be adjusted along the length of the drip irrigation pipe body 44. By moving and adjusting the expansion tube 6, the space between the two expansion sections 62 corresponds to the position of the drip irrigation port 45, so that the water storage area is directly opposite the drip irrigation port 45, and the area with more concentrated water volume is aligned with the drip irrigation port 45, which is conducive to the drip irrigation treatment of the water in the drip irrigation pipe body 44.

[0050] Moreover, when the expansion section 62 of the expansion tube 6 is expanded, the expansion tube 6 moves and adjusts within the drip irrigation pipe body 44. The expansion section 62 will squeeze the water storage area within the drip irrigation pipe body 44, increasing the pressure in the water storage area, thereby pressurizing the water output within the drip irrigation pipe body 44, which is beneficial for the drip irrigation pipe body 44 to drip out liquid.

[0051] Reference Figure 3 , Figure 8 , Figure 9 As shown, a connecting pipe 41 connects the water supply pipe 5 and the drip irrigation pipe body 44. The connecting pipe 41 is equipped with a one-way valve 42, which allows unidirectional flow to the drip irrigation pipe body 44. When water is supplied to the drip irrigation pipe body 44, water can enter the drip irrigation pipe body 44 through the one-way valve 42, and the water pressure can be used to drip water from the drip irrigation pipe body 44. When the water pressure is insufficient, high-pressure gas is introduced into the expansion pipe 6 inside the drip irrigation pipe body 44 to pressurize the water inside the drip irrigation pipe body 44, so that the water pressure inside the drip irrigation pipe body 44 can meet the drip irrigation requirements, thereby enabling the drip irrigation pipe body 44 to drip normally.

[0052] Additionally, a connecting sleeve 43 is provided between the first end 441 of the drip irrigation tube body 44 and the connecting pipe 41. One side of the connecting sleeve 43 is connected to the connecting pipe 41, and the other side of the connecting sleeve 43 is connected to the first end 441 of the drip irrigation tube body 44. An expansion tube 6 extends into the drip irrigation tube body 44 from the second end 442.

[0053] Reference Figure 9 As shown, a driving device 7 is provided at the second end 442 of the drip irrigation tube body 44. The driving device 7 includes an end cap 71, an end cap 72, and an elastic telescopic cover 73. The end cap 71 and the end cap 72 are respectively fixedly connected to the two ends of the elastic telescopic cover 73. The elastic telescopic cover 73 is made of elastic rubber material and has stretchable pleats, enabling elastic telescopic adjustment.

[0054] The first end cap 71 is fixedly installed at the second end 442 of the drip irrigation tube body 44. The expansion tube 6 passes through the first end cap 71 and the second end cap 72, and extends into the drip irrigation tube body 44 from the second end 442. The expansion tube 6 is sealed and fixed to the second end cap 72, allowing the second end cap 72 and the expansion tube 6 to move and adjust synchronously. A gap is formed between the expansion tube 6 and the first end cap 71, which allows the expansion tube 6 to smoothly extend into the drip irrigation tube body 44 and allows liquid to flow between the drip irrigation tube body 44 and the elastic telescopic cover 73.

[0055] Additionally, a fixing block 74 is fixedly connected to the outside of end cap 71, and a fixing block 75 is fixedly connected to the outside of end cap 72. Fixing blocks 74 and 75 serve as supports, and a drive rod 76 drives the movement between them, allowing end caps 71 and 72 to extend and retract. A drive rod 76 is fixedly connected to the outside of fixing block 75, including a drive end 77. The drive end 77 is adjustable in length and retraction and is fixedly connected to fixing block 74. The extension and retraction of the drive end 77 drives relative movement between fixing blocks 74 and 75, thereby adjusting the relative movement between end caps 71 and 72 and adjusting the position of the expansion tube 6. The expansion tube 6 and the drip irrigation tube body 44 can then move relative to each other.

[0056] Furthermore, fixing members 47 are provided on the outer sides of the first end 441 and the second end 442 of the drip irrigation pipe body 44. The fixing members 47 can be inserted into and fixed in the ground, so that the drip irrigation pipe body 44 is roughly fixed to the ground. During the movement and adjustment of the expansion tube 6, relative movement adjustment can be achieved between the expansion tube 6 and the drip irrigation pipe body 44.

[0057] Reference Figure 8 As shown, the end of the expansion tube 6 is closed, that is... Figure 8 The left end of the expansion tube 6 is closed and extends into the connecting cylinder 43. The inner wall of the connecting cylinder 43 forms a smooth cylindrical structure. The connecting cylinder 43 is provided with a piston plate 8, which is connected to the inner wall of the connecting cylinder 43 by a piston. It can be piston-adjusted along the length of the connecting cylinder 43 and maintains a relative seal between the inner wall of the connecting cylinder 43 and the outer wall of the piston plate 8.

[0058] Furthermore, the end of the expansion tube 6 is connected and fixed to the piston plate 8, allowing the expansion tube 6 and the piston plate 8 to move synchronously. Several flow holes 81 are provided on the piston plate 8, distributed around the outer periphery of the expansion tube 6. Water can be supplied through the flow holes 81 to both sides of the piston plate 8. An elastic diaphragm 82 is provided on the side of the piston plate 8 facing the first end 441 of the drip irrigation tube body 44. The elastic diaphragm 82 has good elasticity and can undergo elastic deformation. The middle part of the elastic diaphragm 82 is fixedly connected to the piston plate 8, and the outer periphery of the elastic diaphragm 82 can elastically cover the flow holes 81, thus covering and keeping the flow holes 81 in a sealed state.

[0059] When water flows from left to right in the connecting tube 43, the water pressure pushes the elastic diaphragm 82, causing the outer periphery of the elastic diaphragm 82 to deform to the right. This allows the elastic diaphragm 82 to open the flow hole 81, enabling water to flow into the drip irrigation tube 44. When the drip irrigation tube 44 is pressurized, the water pressure in the right inner cavity of the connecting tube 43 pushes the elastic diaphragm 82, causing the elastic diaphragm 82 to seal against the flow hole 81. This keeps the piston plate 8 sealed, allowing the pressure inside the drip irrigation tube 44 to increase smoothly, thus enabling the drip irrigation tube 44 to pressurize and dispense liquid normally.

[0060] By adjusting the extension and retraction of the drive rod 76, the end cap 72 can be moved, which in turn causes the expansion tube 6 to extend and retract as a whole, enabling the expansion tube 6 and the drip irrigation tube body 44 to adjust. At the same time, it can move the piston plate 8 inside the connecting cylinder 43. Through the reciprocating movement of the piston plate 8, the liquid in the left chamber of the connecting cylinder 43 can be pumped into the right chamber of the connecting cylinder 43, and then flows into the drip irrigation tube body 44. To a certain extent, it can achieve the effect of auxiliary pressurization inside the drip irrigation tube body 44, thereby maintaining the smooth dripping of liquid from the drip irrigation tube body 44.

[0061] Moreover, when the expansion tube 6 moves within the drip irrigation tube body 44, it can drive the water within the drip irrigation tube body 44 to move within the tube body, so that the water flow can be relatively evenly distributed within the drip irrigation tube body 44, thereby ensuring that all parts of the drip irrigation tube body 44 can smoothly achieve drip irrigation.

[0062] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A drip irrigation device, comprising a drip irrigation tube assembly (4), the drip irrigation tube assembly (4) comprising a drip irrigation tube body (44), wherein a plurality of drip irrigation ports (45) are provided on the lower side of the drip irrigation tube body (44), and the drip irrigation ports (45) are evenly distributed along the length direction of the drip irrigation tube body (44), characterized in that, The drip irrigation tube assembly (4) also includes an expansion tube (6), at least a portion of which extends into the drip irrigation tube body (44). The expansion tube (6) includes an expansion section that can expand and deform outward to pressurize the drip irrigation liquid inside the drip irrigation tube body (44). The expansion tube (6) is a rigid tube (61). The expansion section (62) of the expansion tube (6) has several air holes (621) on its outer periphery. The outer periphery of the expansion section (62) is fitted with an annular elastic sleeve (622). The inner periphery of both ends of the elastic sleeve (622) is sealed and bonded to the outer periphery of the expansion tube (6). The elastic sleeve (622) covers the air holes (621) of the expansion section (62). The elastic sleeve (622) can expand elastically outward. The expansion tube (6) can be adjusted along the length of the drip irrigation tube (44).

2. The drip irrigation device according to claim 1, characterized in that, A water baffle (46) is provided on the lower side of the inner wall of the drip irrigation pipe body (44). The water baffle (46) is arranged along the length of the drip irrigation pipe body (44). The cross section of the water baffle (46) is arc-shaped, covering each drip irrigation port (45). The water baffle (46) has several through holes (461) that run vertically through it.

3. The drip irrigation device according to claim 1, characterized in that, The drip irrigation device also includes a water supply pipe (5), and a connecting pipe (41) is connected between the water supply pipe (5) and the drip irrigation pipe body (44). The connecting pipe (41) is equipped with a one-way valve (42), which is used to allow one-way flow to the drip irrigation pipe body (44).

4. A drip irrigation device according to claim 3, characterized in that, A connecting tube (43) is provided between the first end (441) of the drip irrigation tube body (44) and the connecting tube (41). One side of the connecting tube (43) is connected to the connecting tube (41), and the other side of the connecting tube (43) is connected to the first end (441) of the drip irrigation tube body (44). The expansion tube (6) extends into the drip irrigation tube body (44) from the second end (442).

5. A drip irrigation device according to claim 1, characterized in that, A driving device (7) is provided at the second end (442) of the drip irrigation tube body (44). The driving device (7) includes an end cap one (71), an end cap two (72), and an elastic telescopic cover (73). The end cap one (71) and the end cap two (72) are respectively fixedly connected to the two ends of the elastic telescopic cover (73). The elastic telescopic cover (73) can realize elastic telescopic adjustment. The end cap one (71) is located at the second end (442) of the drip irrigation tube body (44). The expansion tube (6) passes through the end cap one (71) and the end cap two (72) and extends into the drip irrigation tube body (44) from the second end (442). The expansion tube (6) is sealed and fixed to the end cap two (72). The gap between the expansion tube (6) and the end cap one (71) allows liquid to flow between the drip irrigation tube body (44) and the elastic telescopic cover (73).

6. A drip irrigation device according to claim 5, characterized in that, The outer side of the first end cap (71) is fixedly connected to the first fixing block (74), and the outer side of the second end cap (72) is fixedly connected to the second fixing block (75). The second fixing block (75) is fixedly connected to the driving rod (76). The driving rod (76) includes a driving end (77), which is telescopically adjustable and fixedly connected to the first fixing block (74).

7. A drip irrigation device according to claim 4, characterized in that, The end of the expansion tube (6) is closed and extends into the connecting cylinder (43). The connecting cylinder (43) is provided with a piston plate (8). The piston plate (8) is piston-connected to the inner wall of the connecting cylinder (43) and can be piston-adjusted along the length of the connecting cylinder (43). The end of the expansion tube (6) is connected to the piston plate (8). The piston plate (8) has several flow holes (81). An elastic diaphragm (82) is provided on the side of the piston plate (8) facing the first end (441) of the drip irrigation tube body (44). The middle part of the elastic diaphragm (82) is fixedly connected to the piston plate (8). The outer periphery of the elastic diaphragm (82) can elastically cover the flow holes (81).

8. A drip irrigation device according to claim 1, characterized in that, The drip irrigation device also includes a water supply device (54), a fertilizer supply device (53), and a filter. The water supply device (54) is connected to the water supply pipe (5) and is used to supply drip irrigation water to the water supply pipe (5). The fertilizer supply device (53) is connected to the water supply pipe (5) and is used to supply fertilizer to the water supply pipe (5). The filter is located on the water supply pipe (5) and is used to filter the drip irrigation water. The drip irrigation pipe assembly (4) is connected to the water supply pipe (5) and supplies water through the water supply pipe (5).

9. A drip irrigation method for planting wheat in saline-alkali soil, characterized in that, Using the drip irrigation device as described in any one of claims 1-8, trenches (2) are opened on the surface of the land (1), and each trench (2) is evenly arranged side by side. Several plants (3) are planted in the trenches (2), and the plants (3) in the trenches (2) are evenly planted along the length of the trenches (2). During the planting process, the drip irrigation device is used to drip irrigate the plants (3). The drip irrigation device includes a drip irrigation pipe group (4), and the drip irrigation pipe group (4) includes a drip irrigation pipe body (44). The drip irrigation pipe body (44) is laid in the trenches (2).

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