Dropper device suitable for alternative drip irrigation in vertical root division area of cotton

Abstract

The utility model belongs to the technical field of plant irrigation equipment, and discloses a dropper device suitable for alternative drip irrigation in a vertical root division area of cotton, which comprises a vertical drip irrigation and adjusting mechanism, a group of drip irrigation holes which are symmetrically arranged are respectively arranged on the pipe wall of a vertical drip irrigation close to the upper end and the lower end of the vertical drip irrigation; the axial directions of the two groups of drip irrigation holes are arranged in a cross staggered manner; the adjusting mechanism is coaxially and rotatably mounted in the vertical dropper in the axial direction of the vertical dropper, a group of symmetrically arranged water plugging plates are vertically fixed to the height positions, corresponding to the two groups of drip irrigation holes, of the adjusting mechanism in the axial direction of the adjusting mechanism respectively, and the adjusting mechanism is rotated to control the two groups of water plugging plates to switch and plug the corresponding drip irrigation holes. The drip irrigation equipment can be autonomously controlled, an alternative drip irrigation scheme in the vertical direction is carried out, and the drip irrigation equipment is convenient to install and operate.

Description

Technical Field

[0001] This utility model relates to the field of plant irrigation equipment technology, and more specifically to a drip irrigation device suitable for alternating drip irrigation of the vertical root zone of cotton. Background Technology

[0002] Alternating root zone irrigation is a water-saving agricultural technology that involves dividing plant roots into sections for alternating irrigation, either horizontally or vertically, to harden the crop roots through alternating wet and dry conditions. While one section of the root system is irrigated to ensure the necessary water for crop growth, another section is dehydrated and produces abscisic acid (ABA), a root-derived signal that is transmitted from the roots to the leaves. This causes the stomata to constrict or close, reducing water loss through transpiration and improving the plant's water use efficiency. Numerous studies have shown that root zone irrigation offers advantages such as saving irrigation volume, maintaining crop yield, and improving water use efficiency.

[0003] Vertical alternating root irrigation involves alternating watering of the plant's root system in a vertical direction, maintaining a cycle of wet and dry water. Horizontal alternating root irrigation is only suitable for fibrous-root crops, while vertical alternating root irrigation is suitable for both fibrous-root and taproot crops. Compared to horizontal alternating irrigation, it has a higher water-saving effect. Cotton is a fibrous-root crop, and to further enhance its water-saving effect, vertical alternating root irrigation can be used.

[0004] The existing invention patent, application number 202211255878.0, entitled "A Vertical Root Zone Alternating Water and Fertilizer Irrigation System and Irrigation Method", discloses a technical solution that simultaneously buries surface branch pipes and underground branch pipes in layers underground for alternating vertical irrigation. In the process of laying the pipes, the soil layer needs to be completely excavated in the direction of the pipes before the vertical drip pipes can be laid. The installation process is complicated and the installation cost is high.

[0005] Therefore, how to provide a drip irrigation device for alternating drip irrigation of vertical root zones with a simple installation process is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the present invention provides a drip irrigation device suitable for alternating drip irrigation of the vertical root zone of cotton. The drip irrigation branch pipes are arranged according to the number of cotton rows and the row spacing, and the vertical drip pipes on the drip irrigation branch pipes are set according to the plant spacing of cotton plants and correspond to the position of cotton plants. The installation of the drip irrigation device can be completed simply and quickly by digging a hole at the position of the vertical drip pipe and burying the vertical drip pipe in advance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A drip irrigation device suitable for alternating drip irrigation of the vertical root zone of cotton, installed within a drip irrigation network, includes:

[0009] A vertical dripper has a set of symmetrically arranged drip holes on its wall near its upper and lower ends, and the two sets of drip holes are arranged in a cross-shaped axial direction.

[0010] An adjustment mechanism is installed inside the vertical drip tube and rotates along its axial direction. A set of symmetrically arranged water-blocking plates are vertically fixed to the two sets of drip irrigation holes along its axial direction. Rotating the adjustment mechanism controls the two sets of water-blocking plates to switch and block the corresponding drip irrigation holes.

[0011] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a drip irrigation device suitable for alternating drip irrigation in the vertical root zone of cotton. The vertical drip pipes are installed in the drip irrigation network according to the plant spacing of cotton, and the vertical drip pipes are pre-buried near the cotton root system. During the drip irrigation process, the two sets of water-blocking plates of the adjustment mechanism can block the two sets of drip irrigation holes arranged in an alternating manner. That is, when the set of water-blocking plates at the upper end of the vertical drip pipe blocks a set of drip irrigation holes, the other set of water-blocking plates at the lower end of the vertical drip pipe can abut against the inner wall of the vertical drip pipe. At this time, only the other set of drip irrigation holes at the lower end of the vertical drip pipe is in the open state for deep drip irrigation. After adjustment, the water-blocking plate at the upper end of the vertical drip pipe is moved away from the drip irrigation hole and abuts against the inner wall of the vertical drip irrigation, while the other set of water-blocking plates at the lower end of the vertical drip pipe blocks the drip irrigation hole. At this time, only the drip irrigation hole at the lower end of the vertical drip pipe is in the open state for shallow drip irrigation. Therefore, this drip irrigation equipment can be autonomously controlled to carry out alternating drip irrigation schemes in the vertical direction. It only requires burying the vertical drip pipes in the soil layer to adjust the humidity of different soil layers, thus optimizing the layout process of the drip irrigation equipment, making installation convenient and improving installation efficiency.

[0012] Furthermore, the drip irrigation network includes a main pipe and multiple drip irrigation branch pipes arranged at intervals connected to it, and the vertical drip pipes are multiple and installed at intervals and vertically connected at the bottom of the drip irrigation branch pipes.

[0013] Furthermore, the adjustment mechanism includes an adjustment rod and an adjustment handle. The adjustment rod is coaxially arranged inside the vertical drip tube, with one end sealing upwards through the drip irrigation branch pipe and rotatably connected to the adjustment handle. Two sets of water-blocking plates are installed at intervals along the axial direction of the adjustment rod on its outer peripheral wall, and the two sets of water-blocking plates correspond to the height positions of the two sets of drip irrigation holes, respectively.

[0014] Furthermore, it also includes a mounting base, wherein multiple mounting bases are respectively fitted onto the outer wall of the drip irrigation branch pipe corresponding to multiple vertical drip tubes. The upper end of the adjusting rod is located inside the mounting base and its end passes through the top plate of the mounting base. The adjusting handle is located above the top plate of the mounting base and is fixed to the end of the adjusting rod. The upper surfaces of the multiple mounting base top plates are all located at the same height.

[0015] The beneficial effects of adopting the above technical solution are: the mounting base can provide a sliding installation position for the linkage control components, which facilitates the installation of other devices. At the same time, it also helps to improve the durability of the entire drip irrigation network, reduce the system failure rate and maintenance costs, and enable the drip irrigation network to provide precise irrigation services for cotton in a long-term and stable manner, so as to better exert its advantages such as water saving and yield increase.

[0016] Furthermore, it also includes a linkage control component, which includes a transmission rack assembly, a connecting plate, and a cylinder. The transmission rack assembly is slidably mounted on a plane composed of the upper end faces of multiple mounting base top plates. The adjusting handle is an adjusting gear. The transmission rack assembly can simultaneously mesh with multiple adjusting gears. The connecting plate is located above the main pipe, and one side of its plate is fixedly connected to one end of the transmission rack assembly. The cylinder is mounted on the top of the main pipe, and the output end of the cylinder is fixed to the other side of the connecting plate via a drive rod, so as to drive the transmission rack assembly to slide back and forth along the axial direction of the drip irrigation branch pipe on the top plate of the mounting base.

[0017] The beneficial effects of adopting the above technical solution are as follows: the linkage control component can accurately control the rotation angle of all adjusting rods simultaneously, thereby accurately adjusting the position of the upper and lower sets of water-blocking plates, realizing the precise opening and closing of the upper and lower sets of drip irrigation holes of the vertical drip pipe, ensuring that the alternating drip irrigation of different vertical zones of cotton roots is carried out according to the predetermined pattern, better meeting the differentiated water needs of cotton at different growth stages, and improving the scientificity and rationality of drip irrigation; and the transmission rack and pinion assembly can simultaneously engage with multiple adjusting handles, which means that multiple vertical drip pipes on multiple drip irrigation branches can be adjusted synchronously, ensuring that the drip irrigation status (opening and closing of drip irrigation holes) of each vertical drip pipe remains consistent at the same time, avoiding problems such as inconsistent or asynchronous adjustments that may occur due to manual adjustment one by one, further improving the uniformity of drip irrigation, enabling cotton plants to obtain water evenly, and promoting their balanced growth.

[0018] Furthermore, the transmission rack assembly includes multiple transmission racks, each corresponding to a multiple drip irrigation branch pipe. The bottom end face of each transmission rack is slidably mounted on the top plate of a plurality of spaced mounting bases, and its tooth end face meshes with the adjusting gear. One side of the connecting plate is fixedly connected to one end of the multiple transmission racks.

[0019] The beneficial effects of adopting the above technical solution are as follows: Multiple transmission racks are connected into one unit via a connecting plate, and then connected to the drive rod and cylinder, forming an integrated linkage control structure. This integrated design facilitates the integration and installation of the linkage control components with other parts of the drip irrigation system, simplifying the installation process, improving installation efficiency, and also facilitating maintenance and repair of the entire device, reducing maintenance costs. The output end of the cylinder drives the connecting plate to move via the drive rod, and the connecting plate then drives multiple transmission racks to slide synchronously, thereby achieving synchronous rotation of multiple adjustment handles. This ensures that drip irrigation holes one and two on each vertical dripper open or close simultaneously, guaranteeing the synchronicity and consistency of drip irrigation zone switching. This allows different vertical zones of the cotton root system to be alternately drip-irrigated simultaneously according to a predetermined pattern, improving the uniformity and accuracy of drip irrigation.

[0020] Furthermore, the linkage control component also includes two limiting plates, which are arranged in parallel and spaced apart. Both limiting plates are vertically fixed to the top plate of the mounting base. The limiting plates are arranged close to the adjusting gear, and the transmission rack can be clamped and slidably installed between the two limiting plates.

[0021] The beneficial effects of adopting the above technical solution are as follows: Two opposing limiting plates are fixed to the top surface of the mounting base along the axial direction of the drip irrigation branch pipe, providing a precise guide path for the transmission rack. The transmission rack is clamped and slidably installed between the two limiting plates, enabling it to slide smoothly and accurately along the direction defined by the limiting plates. This avoids possible deviations and wobbling of the transmission rack during sliding, ensuring the accuracy and stability of the transmission. It also allows the adjusting handle (gear) to rotate accurately at a preset angle, achieving precise control of the drip irrigation holes.

[0022] Furthermore, the vertical drip tube also includes multiple filter membranes, each installed at each drip hole.

[0023] The beneficial effects of adopting the above technical solution are: the filter membrane can play a filtering role, reducing the amount of impurities entering the vertical drip tube, which correspondingly reduces the frequency of cleaning, unblocking and other maintenance work required inside the drip irrigation network due to the accumulation of impurities, extends the maintenance cycle of the drip irrigation network, saves maintenance costs and time, and improves the convenience and economy of using the drip irrigation network.

[0024] Furthermore, the end face of each of the water-blocking plates that slides against the inner wall of the vertical drip tube is an arc-shaped surface.

[0025] The beneficial effects of adopting the above technical solution are: the arc-shaped surface design makes the contact between the water-blocking plate and the inner wall of the vertical drip tube more closely fit, which can better adapt to the shape of the inner wall of the drip tube, reduce gaps caused by poor contact, thereby improving the sealing performance, effectively preventing water from leaking from the gap between the water-blocking plate and the inner wall of the drip tube, ensuring the precise opening and closing of the drip irrigation hole, and realizing precise control of the drip irrigation area. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the vertical dropper of this utility model.

[0028] Figure 2 This is a three-dimensional structural diagram of the adjustment mechanism of this utility model.

[0029] Figure 3 This is a three-dimensional structural diagram of the linkage control component of this utility model.

[0030] Figure 4 for Figure 3 A magnified schematic diagram of part A in the middle.

[0031] Among them, 100-main pipe, 200-drip irrigation branch pipe, 1-vertical drip pipe, 11-drip irrigation hole, 2-adjustment mechanism, 21-adjustment rod, 22-adjustment gear, 3-water blocking plate, 4-mounting base, 5-linkage control component, 51-transmission rack and pinion assembly, 511-transmission rack and pinion, 512-connecting plate, 513-drive rod, 52-cylinder, 53-limiting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This utility model discloses a drip irrigation device suitable for alternating drip irrigation of the vertical root zone of cotton. It is installed in a drip irrigation network and includes a vertical drip irrigation 1 and an adjustment mechanism 2. The vertical drip irrigation 1 has a set of symmetrically arranged drip irrigation holes 11 near its upper and lower ends, and the axial directions of the two sets of drip irrigation holes 11 are arranged in a cross pattern. The adjustment mechanism 2 is installed inside the vertical drip irrigation 1 and rotates coaxially along its axial direction. The adjustment mechanism 2 has a set of symmetrically arranged water blocking plates 3 vertically fixed at the height positions of the two sets of drip irrigation holes, respectively. Rotating the adjustment mechanism controls the two sets of water blocking plates 3 to switch and block the corresponding drip irrigation holes 11.

[0034] This utility model relates to a specific embodiment of a drip irrigation network, which includes a main pipe 100 and multiple drip irrigation branch pipes 200 arranged at intervals connected thereto. Multiple vertical drip pipes 1 are installed at intervals and vertically connected at the bottom of the drip irrigation branch pipes 200. The other end of the main pipe is connected to the water supply unit to provide a water source.

[0035] In a specific embodiment of the present invention, the adjustment mechanism 2 includes an adjustment rod 21 and an adjustment handle. The adjustment rod 21 is coaxially arranged inside the vertical drip tube 1, with one end sealing upward through the drip irrigation branch pipe 200 and rotatably connected to the adjustment handle. Two sets of water-blocking plates 3 are installed at intervals along the axial direction of the adjustment rod 21 on its outer peripheral wall, and the two sets of water-blocking plates 3 correspond to the height positions of the two sets of drip irrigation holes respectively.

[0036] In the above embodiment, a mounting base 4 is also included. Multiple mounting bases 4, each corresponding to a different vertical drip tube 1, are fitted onto the outer wall of the drip irrigation branch pipe 200. The upper end of the adjusting rod 21 is located inside the mounting base 4, and its end passes through the top plate of the mounting base 4. The adjusting handle is located above the top plate of the mounting base 4 and fixed to the end of the adjusting rod 21. The upper surfaces of the top plates of the multiple mounting bases 4 are all at the same height. The mounting base 4 provides a sliding mounting position for the linkage control component 5, facilitating the installation of other devices. It also helps improve the durability of the entire drip irrigation network, reduces the system's failure rate and maintenance costs, and enables the drip irrigation network to provide precise irrigation services to cotton stably and for a long time, better leveraging its advantages such as water conservation and increased yield.

[0037] In another embodiment of this utility model, a linkage control component 5 is also included. The linkage control component 5 includes a transmission rack assembly 51, a connecting plate 54, and a cylinder 52. The transmission rack assembly 51 is slidably mounted on a plane composed of the upper end surfaces of multiple mounting base 4 top plates. The adjustment handle is an adjustment gear 22. The transmission rack assembly 51 can simultaneously mesh with multiple adjustment gears 22 for transmission. The connecting plate 54 is located above the main pipe 100, and one side of its plate is fixedly connected to one end of the transmission rack assembly 51. The cylinder 52 is mounted on the top of the main pipe 100. The output end of the cylinder 52 is fixed to the other side of the connecting plate 54 through a drive rod 521 to drive the transmission rack assembly 51 to slide back and forth along the axial direction of the drip irrigation branch pipe 200 on the top plate of the mounting base 4. The linkage control component 5 can precisely control the rotation angle of all adjusting rods 21 simultaneously, thereby accurately adjusting the position of the upper and lower sets of water blocking plates 3, and respectively realizing the precise opening and closing of the upper and lower sets of drip irrigation holes 11 of the vertical drip pipe 1. This ensures that the alternating drip irrigation of different vertical zones of the cotton root system is carried out in a predetermined pattern, better meeting the differentiated water needs of cotton at different growth stages and improving the scientific and rational nature of drip irrigation. In addition, the transmission rack assembly 51 can simultaneously mesh with multiple adjusting handles 21, which means that multiple vertical drip pipes on multiple drip irrigation branches can be adjusted synchronously. This ensures that the drip irrigation status (opening and closing of drip irrigation holes 11) of each vertical drip pipe remains consistent at the same time, avoiding problems such as inconsistent or asynchronous adjustments that may occur due to manual adjustment one by one. This further improves the uniformity of drip irrigation, enabling cotton plants to obtain water evenly and promoting their balanced growth.

[0038] In a specific embodiment of this utility model, the transmission rack assembly 51 includes multiple transmission racks 511, each corresponding to a multiple drip irrigation branch pipe 200. The bottom end faces of the transmission racks 511 are slidably mounted on the top plates of multiple spaced mounting bases 4, and their tooth ends mesh with adjusting gears 22 for transmission. One side of the connecting plate 54 is fixedly connected to one end of the multiple transmission racks 511. The multiple transmission racks 511 are connected into one unit by the connecting plate 512 and connected to the drive rod 513 and the cylinder 52, forming an integrated linkage control structure. This integrated design facilitates the integration and installation of the linkage control component 5 with other components of the drip irrigation system, simplifying the installation process, improving installation efficiency, and also facilitating the maintenance and repair of the entire device, thus reducing maintenance costs. The output end of the cylinder 52 drives the connecting plate 512 to move via the drive rod 513, and the connecting plate 512 then drives multiple transmission racks 511 to slide synchronously, thereby realizing the synchronous rotation of multiple adjustment handles. This ensures that the two sets of drip irrigation holes 11 on each vertical drip pipe 1 are opened or closed respectively, ensuring the synchronicity and consistency of drip irrigation area switching. This allows different vertical zones of the cotton root system to be alternately drip-irrigated simultaneously according to a predetermined pattern, improving the uniformity and accuracy of drip irrigation.

[0039] In the above embodiment, the linkage control component 5 also includes two limiting plates 53, which are arranged in parallel and spaced apart. Both limiting plates 53 are vertically fixed to the top plate of the mounting base 4. The limiting plates 53 are arranged close to the adjusting gear 22, and the transmission rack 511 is clamped and slidably mounted between the two limiting plates 53. The two opposing limiting plates 53 are fixed to the top surface of the mounting base 4 along the axial direction of the drip irrigation branch pipe 200, providing a precise guide path for the transmission rack 511. The transmission rack 511 is clamped and slidably mounted between the two limiting plates 53, and can slide smoothly and accurately along the direction defined by the limiting plates 53. This avoids possible deviation and shaking of the transmission rack 511 during the sliding process, ensuring the accuracy and stability of the transmission, and enabling the adjusting handle to rotate accurately at a preset angle, thereby achieving precise control of the drip irrigation hole 11.

[0040] In the above embodiment, the vertical dripper 1 also includes multiple filter membranes, each installed at each drip hole 11. The filter membranes function as filters, reducing the amount of impurities entering the vertical dripper 1. Consequently, this reduces the frequency of cleaning and unclogging maintenance required due to impurity accumulation inside the drip irrigation network, extending the maintenance cycle of the drip irrigation network, saving maintenance costs and time, and improving the convenience and economy of using the drip irrigation network.

[0041] In the above embodiments, the end face of each water-blocking plate 3 that slides against the inner wall of the vertical drip tube 1 is an arc-shaped surface. The arc-shaped surface design makes the contact between the water-blocking plate 3 and the inner wall of the vertical drip tube 1 more closely fit, better adapts to the shape of the inner wall of the drip tube, reduces gaps caused by poor contact, thereby improving sealing performance, effectively preventing water leakage from the gap between the water-blocking plate 3 and the inner wall of the drip tube, ensuring the precise opening and closing of the drip irrigation hole 11, and achieving precise control of the drip irrigation area.

[0042] In addition, this utility model also includes drip irrigation pipe fixing clips. Multiple drip irrigation pipe fixing clips are installed at intervals on the drip irrigation branch pipe 200. The drip irrigation pipe fixing clips can slide along the axial direction perpendicular to the drip irrigation branch pipe 200, and their bottom ends can be inserted into the soil layer, while their top ends can abut against the top surface of the drip irrigation branch pipe 200. During irrigation, the impact of water flow and external environmental factors such as wind may cause the drip irrigation branch pipe 200 and other pipes to shift. The drip irrigation pipe fixing clips can firmly fix the pipes to the soil, maintaining their stable position and preventing uneven drip irrigation or changes in the relative position of the drip irrigation holes 11 and the cotton roots due to pipe displacement, thus ensuring the accuracy of irrigation.

[0043] The working principle of this utility model of a drip irrigation device for alternating drip irrigation in the vertical root zone of cotton is as follows: Vertical drippers are installed in the drip irrigation network according to the plant spacing of the cotton, and are pre-buried near the cotton roots. During drip irrigation, two sets of blocking plates of the adjusting mechanism can block two sets of staggered drip holes respectively. That is, when one set of blocking plates near the top of the vertical dripper blocks one set of drip holes, the other set of blocking plates can abut against the inner wall of the vertical dripper. At this time, only the other set of drip holes is open for deep drip irrigation. After adjustment, the blocking plate near the top of the vertical dripper is moved away from the drip hole and abuts against the inner wall of the vertical dripper, while the other set of blocking plates blocks the drip hole near the bottom of the vertical dripper. At this time, only the drip hole near the top of the vertical dripper is open for shallow drip irrigation.

[0044] Furthermore, to optimize the linkage control mode, a linkage control component that can simultaneously control multiple adjustment mechanisms is set up. Driven by a cylinder, the transmission rack and pinion meshes with the adjustment gear, thereby driving the conversion of the vertical staggered dripping mode. The sliding displacement of the transmission rack and pinion can be limited according to the 90° rotation of the gear, limiting the working stroke of the cylinder to this distance, further improving the adjustment accuracy. The cylinder can also be remotely connected to a controller for control, making it convenient for operators to operate.

[0045] Therefore, this drip irrigation equipment can be autonomously controlled to carry out alternating drip irrigation schemes in the vertical direction, and only requires burying the vertical drip pipes in the soil layer, which optimizes the layout process of the drip irrigation equipment, makes installation convenient, and improves installation efficiency.

[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drip irrigation device suitable for alternating drip irrigation of the vertical root zone of cotton, installed within a drip irrigation network, characterized in that, include: A vertical drip tube (1) has a set of symmetrically arranged drip holes (11) on its tube wall near its upper and lower ends, and the two sets of drip holes (11) are arranged in a cross-shaped axial direction. Adjustment mechanism (2) is installed inside the vertical drip tube (1) in a coaxial rotational manner. The adjustment mechanism (2) has a set of symmetrically arranged water-blocking plates (3) vertically fixed at the height positions of the two sets of drip irrigation holes respectively along its axis. Rotating the adjustment mechanism (2) controls the two sets of water-blocking plates (3) to switch and block the corresponding drip irrigation holes (11).

2. The drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 1, characterized in that, The drip irrigation network includes a main pipe (100) and multiple drip irrigation branch pipes (200) arranged at intervals connected to it. The vertical drip pipes (1) are multiple and installed at intervals and vertically connected at the bottom of the drip irrigation branch pipes (200).

3. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 2, characterized in that, The adjustment mechanism (2) includes an adjustment rod (21) and an adjustment handle. The adjustment rod (21) is coaxially arranged inside the vertical drip tube (1). One end of the rod passes through the drip irrigation branch pipe (200) and is rotatably connected to the adjustment handle. Two sets of water-blocking plates (3) are installed on the outer peripheral wall of the adjustment rod (21) at intervals along the axial direction. The two sets of water-blocking plates (3) correspond to the height positions of the two sets of drip irrigation holes, respectively.

4. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 3, characterized in that, It also includes a mounting base (4), which consists of multiple vertical drip tubes (1) respectively fitted onto the outer wall of the drip irrigation branch pipe (200). The upper end of the adjusting rod (21) is located inside the mounting base (4) and its end passes through the top plate of the mounting base (4). The adjusting handle is located above the top plate of the mounting base (4) and is fixed to the end of the adjusting rod (21). The upper surfaces of the top plates of the multiple mounting bases (4) are all located at the same height.

5. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 4, characterized in that, It also includes a linkage control component (5), which includes a transmission rack assembly (51), a connecting plate (54), and a cylinder (52). The transmission rack assembly (51) is slidably mounted on a plane composed of the upper end surfaces of the top plates of multiple mounting bases (4). The adjusting handle is an adjusting gear (22). The transmission rack assembly (51) can simultaneously mesh with multiple adjusting gears (22). The connecting plate (54) is located above the main pipe (100), and one side of its plate is fixedly connected to one end of the transmission rack assembly (51). The cylinder (52) is mounted on the top of the main pipe (100). The output end of the cylinder (52) is fixed to the other side of the connecting plate (54) via a drive rod (521) to drive the transmission rack assembly (51) to slide back and forth along the axial direction of the drip irrigation branch pipe (200) on the top plate of the mounting base (4).

6. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 5, characterized in that, The transmission rack assembly (51) includes multiple transmission racks (511), each of which corresponds to a multiple drip irrigation branch pipe (200). The bottom end face of each transmission rack (511) is slidably mounted on the top plate of a plurality of spaced mounting bases (4), and its tooth end face meshes with the adjusting gear (22). One side of the connecting plate (54) is fixedly connected to one end of each of the multiple transmission racks (511).

7. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to claim 6, characterized in that, The linkage control component (5) also includes a limiting plate (53). The limiting plates (53) are two parallel and spaced apart. Both limiting plates (53) are vertically fixed on the top plate of the mounting base (4). The limiting plates (53) are arranged close to the adjusting gear (22) and the transmission rack (511) can be clamped and slidably installed between the two limiting plates (53).

8. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to any one of claims 1-7, characterized in that, The vertical drip tube (1) also includes a filter membrane, which is multiple and installed at each of the drip holes (11).

9. A drip irrigation device for alternating drip irrigation of the vertical root zone of cotton according to any one of claims 1-7, characterized in that, The end face of each of the water-blocking plates (3) that slides against the inner wall of the vertical drip tube (1) is an arc-shaped surface.

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