Sand stabilization and water retention device and method for water and soil conservation

Abstract

The invention provides a sand stabilization and water retention device for water and soil conservation and a method thereof, and relates to the technical field of sand stabilization and water retention equipment. Comprising an adjusting column, the adjusting column comprises a column body, the interior of the column body is hollow and provided with a spiral baffle, and the spiral baffle is arranged in the length direction of the adjusting column; a water storage cavity is formed in the bottom of the column body, a water diversion port is formed in the top of the column body, and a water diversion port is formed in the side face of the column body; the two ends of the adjusting column are located on the earth surface and underground respectively, and heat conduction is conducted through the difference between earth surface temperature and underground temperature to adjust earth surface temperature. Compared with the prior art, water collection can be achieved through the temperature difference between the sand land surface and the underground, the surface temperature can be adjusted through heat conduction, the influence of high and low temperatures on seed growth is reduced, sand land treatment and conversion are achieved by improving the sand land ecological environment, and guarantee is provided for agricultural use and forest use.

Description

A soil and water conservation device and method for sand fixation and water retention Technical Field

[0001] This invention relates to the field of water conservation and sand fixation equipment technology, and more specifically, to a sand fixation and water conservation device and method for soil and water conservation. Background Technology

[0002] Desertification control is a global ecological governance challenge, characterized by its long-term, arduous, and recurring nature, making it extremely difficult to manage. Meanwhile, water conservation and sand fixation are important prerequisites and foundations for the sustainable development of agriculture and forestry. They are needed to improve the ecological environment of sandy areas, ensure stable agricultural production land, and increase farmers' income, which is of great significance.

[0003] Currently, the most commonly used methods for sand fixation and water conservation are biological sand control through the planting of sand-fixing plants. Among them, cyanobacteria are the preferred choice for planting in the early stage of surface crusting because they can both fix sand and fertilize the soil. They can increase soil organic matter, providing the necessary soil organic matter for the subsequent conversion of sandy land to agricultural land, which is conducive to the growth of subsequent agricultural and forestry crops. Sand-fixing species such as spruce have well-developed lateral roots that can spread 1.5-2 times the tree height, firmly locking the sand dunes, which is also an important part of long-term sand fixation and environmental improvement. However, the planting and growth of cyanobacteria, spruce, or other sand-fixing plants are affected by the drought of sandy land and the high and low temperatures in the morning and evening, which limits the efficiency of sand control. In addition, both sand-fixing species and crops require a certain amount of water for growth regulation, requiring auxiliary irrigation or water collection devices with high water collection efficiency to ensure the quality of sand control, avoid repeated desertification, and facilitate agricultural conversion.

[0004] Most existing water conservation and sand fixation equipment is structurally designed for rainwater collection, such as by setting up water diversion networks and supporting structures to collect rainwater or dew. This only partially solves the water problem for plant growth, especially in the early stages of cyanobacteria cultivation. If there is no rain for a long time or if growth is only based on dew, the growth efficiency is very slow. Furthermore, existing water conservation and sand fixation equipment cannot solve the problem of the huge temperature difference between day and night in sandy areas affecting plant growth. When the daytime temperature is too high or the nighttime temperature is too low, the survival rate of plants is significantly reduced, which greatly slows down the progress of desertification control. At the same time, the water collection function of existing water conservation and sand fixation equipment is mostly located above ground, making it susceptible to wind and sand, resulting in a short service life and high maintenance costs.

[0005] Therefore, there is an urgent need for a soil and water conservation device and method to solve the many problems mentioned above regarding water conservation and desertification control. Summary of the Invention

[0006] The purpose of this invention is to provide a sand-fixing and water-retaining device and method for soil and water conservation. It has a simple structure and is easy to use. It can collect water by utilizing the temperature difference between the surface and the bottom of the sandy land, and can reduce the impact of high and low temperatures on the growth of crops by adjusting the surface temperature through heat conduction.

[0007] The embodiments of the present invention are implemented as follows: The present application provides a sand-fixing and water-retaining device for soil and water conservation, which includes an adjusting column. The adjusting column includes a column body, the inside of which is hollow and equipped with a spiral baffle. The spiral baffle is arranged along the length direction of the adjusting column. A water storage cavity is provided at the bottom of the column body, a water inlet is provided at the top of the column body, and a water distribution outlet is provided on the side of the column body. The two ends of the adjusting column are respectively located on the ground surface and underground. Heat conduction is carried out through the temperature difference between the ground surface and underground to regulate the ground surface temperature.

[0008] In some embodiments of the present invention, the water inlet is provided with a water inlet assembly, which includes a water inlet ring, which is disposed on the water inlet, and a water inlet bucket is disposed above the water inlet ring; a sealing head is disposed on the inner side of the water inlet ring, the outer diameter of the sealing head gradually increases from top to bottom, and a gap is left between the sealing head and the water inlet ring; the coefficient of thermal expansion and contraction of the sealing head is greater than that of the water inlet ring.

[0009] In some embodiments of the present invention, a secondary adjustment column is also included. The secondary adjustment column includes an insert body, a control column is slidably connected to the middle of the insert body, a plug rod is hinged to the bottom of the control column, and an opening is provided on the periphery of the insert body.

[0010] In some embodiments of the present invention, a fixing ring is further included, which is provided with a plurality of limiting ring openings and a plurality of limiting insertion openings, the limiting insertion openings being disposed between two adjacent limiting ring openings; an adjusting post is disposed inside the limiting ring opening, and the auxiliary adjusting post is detachably connected to the limiting insertion opening.

[0011] In some embodiments of the present invention, the longitudinal section of the aforementioned fixing ring is arranged in an "I" shape.

[0012] In some embodiments of the present invention, the column is provided with a water inlet, a water bottle is detachably connected to the water inlet, and a water inlet is provided with a water inlet pipe connected to the water storage cavity; a water inlet switch is provided on one side of the water storage cavity; the water inlet switch includes a vertical slide groove, a floating column is provided in the vertical slide groove, and water inlet holes are provided on both sides of the vertical slide groove, which are respectively connected to the water inlet pipe and the water storage cavity; the bottom of the vertical slide groove is connected to the water storage cavity.

[0013] This application provides a method for soil and water conservation to fix sand and retain water, specifically including the following steps: Step 1: Plan sand control sites, set up regulating columns, and plant cyanobacteria; Step 2: Regulate the temperature of the surface sand by regulating the regulating columns during the day and night, and collect water by utilizing the temperature difference between the surface and the ground to assist the growth of cyanobacteria; Step 3: Regularly observe the growth of the plants and maintain the device; Step 4: After the cyanobacteria have formed a crust and improved the surface environment, plant the plants.

[0014] In some embodiments of the present invention, in step four above, the cyanobacterial crust coverage rate is ≥20%.

[0015] Compared with existing technologies, the embodiments of the present invention have at least the following advantages or beneficial effects: Existing sand-fixing and water-retaining devices have not solved the problem of the huge temperature difference between day and night in sandy areas affecting the growth of crops, greatly slowing down the progress of desertification control. Moreover, most of the functional parts are located above ground, making them susceptible to wind and sand, resulting in short service life and high maintenance costs. The present invention provides a sand-fixing and water-retaining device for soil and water conservation, including an regulating column. The regulating column includes a column body, which is hollow inside and equipped with a spiral baffle. The spiral baffle is arranged along the length of the regulating column. A water storage cavity is provided at the bottom of the column body, a water inlet is provided at the top of the column body, and a water distribution outlet is provided on the side of the column body. The two ends of the regulating column are located at the surface and underground, respectively, and heat conduction is carried out through the temperature difference between the surface and underground to regulate the surface temperature.

[0016] This invention utilizes a hollow regulating column to regulate the temperature difference between the sandy surface and its depths. This, combined with a constant temperature deep underground, effectively mitigates the uneven surface temperature, reducing the impact of extreme daytime or nighttime temperatures on plant growth. Simultaneously, a spiral baffle within the regulating column ensures that during the day, the upper part of the column is warmer than the lower part, allowing external water vapor to condense from top to bottom for easy water collection. At night, the lower part of the column is warmer than the lower part, causing internal water vapor to condense from bottom to top, preventing water loss. The spiral baffle not only effectively blocks internal water vapor from escaping but also significantly increases the contact area for external water vapor, improving water condensation and collection efficiency. A water storage chamber at the bottom of the regulating column contains liquid water, which can evaporate and increase surrounding moisture through a water distributor, promoting plant growth. Furthermore, the main structure of this device is underground, offering strong resistance to wind and sand erosion, a long service life, and low maintenance costs.

[0017] This invention provides a method for soil and water conservation and sand fixation. It involves surveying the site environment, planning sand control sites, determining planting locations for spruce trees, and then installing fixed rings, regulating columns, and secondary regulating columns according to the plan. Cyanobacteria are inoculated to prepare the sandy land for biological crust formation. The installed regulating columns effectively collect and infiltrate water and regulate the sand temperature. Workers can quickly observe and maintain the sand control work using water replenishment bottles, significantly reducing maintenance costs and improving work efficiency. Observation of plant growth can also determine whether additional regulating columns or other devices are needed to enhance water collection and temperature regulation. After the sandy land condition improves, spruce trees are planted for long-term biological sand control. This invention, by setting up regulating columns, effectively achieves biological sand fixation by multiple species from the initial cyanobacteria growth and crust formation to the later planting of spruce trees, thereby improving the surface temperature environment and water collection, significantly shortening the sand control cycle and improving efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a cross-sectional view of the adjusting column according to an embodiment of the present invention; Figure 2 is an enlarged view of point B in Figure 1; Figure 3 is a cross-sectional view of the secondary adjusting column according to an embodiment of the present invention; Figure 4 is a top view of the fixing ring according to an embodiment of the present invention; Figure 5 is a cross-sectional view of the fixing ring according to an embodiment of the present invention; Figure 6 is an enlarged view of point A in Figure 1; Figure 7 is a bottom view of the photovoltaic panel frame according to an embodiment of the present invention; Figure 8 is a side view of the photovoltaic panel frame according to an embodiment of the present invention.

[0020] Icons: 1. Adjusting column; 2. Spiral baffle; 3. Water storage chamber; 4. Water inlet; 5. Connection port; 6. Insert body; 7. Control column; 8. Insert rod; 9. Opening; 10. Fixing ring; 11. Limiting ring opening; 12. Limiting insertion port; 13. Photovoltaic panel frame; 14. Drainage protrusion; 15. Horizontal rotating shaft; 16. Vertical rotating shaft; 17. Horizontal turntable; 18. Sealing head; 19. Water inlet ring opening; 20. Floating column; 21. Water inlet pipe; 22. Water inlet hole; 23. Connection port; 24. Water inlet bucket; 25. Water distribution port. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] Example 1: Referring to Figures 1-2, this example provides a soil and water conservation sand fixation and water retention device, which includes an adjusting column 1. The adjusting column 1 includes a column body, the inside of which is hollow and equipped with a spiral baffle 2. The spiral baffle 2 is arranged along the length direction of the adjusting column 1. A water storage cavity 3 is provided at the bottom of the column body, a water inlet is provided at the top of the column body, and a water distribution port 25 is provided on the side of the column body. The two ends of the adjusting column 1 are located at the surface and underground respectively. Heat conduction is carried out through the temperature difference between the surface and underground to regulate the surface temperature.

[0024] Existing sand-fixing and water-retention devices have not solved the problem of the huge temperature difference between day and night in sandy areas, which affects the growth of crops and greatly slows down the progress of desertification control. Furthermore, most of the functional parts are located above ground, making them susceptible to wind and sand, resulting in short service life and high maintenance costs. This invention, by incorporating a hollow regulating column 1, allows for the thermal regulation of the temperature difference between the sandy surface and its depths after insertion. Combined with a constant temperature deep underground, this effectively alleviates the situation of hot days and cold nights on the surface, significantly reducing the impact of extremely high or low daytime temperatures on crop growth. Simultaneously, the spiral baffle 2 inside the regulating column 1 ensures that during the day, the upper part of the column 1 has a higher temperature than the lower part, allowing external water vapor to condense from top to bottom, facilitating water collection. At night, the lower temperature at the upper end and higher temperature at the lower end of the column 1 cause internal water vapor to condense from bottom to top, preventing water loss. The spiral baffle 2 not only effectively blocks internal water vapor from escaping but also greatly increases the contact area for external water vapor, effectively improving the efficiency of water condensation and collection. The water storage cavity 3 at the bottom of the regulating column 1 contains liquid water. This liquid water can evaporate and increase the surrounding moisture through the water distribution port 25, facilitating plant growth. Furthermore, the main structure of this invention is underground, providing strong resistance to wind and sand erosion, a long service life, and low maintenance costs. It is understood that multiple water distribution ports 25 are provided.

[0025] In some embodiments of the present invention, the water inlet is provided with a water inlet assembly, which includes a water inlet ring 19 disposed on the water inlet, and a water inlet bucket 24 disposed above the water inlet ring 19; a sealing head 18 is disposed on the inner side of the water inlet ring 19, the outer diameter of the sealing head 18 gradually increases from top to bottom, and a gap is left between the sealing head 18 and the water inlet ring 19; the coefficient of thermal expansion and contraction of the sealing head 18 is greater than that of the water inlet ring 19. The gradual increase in the outer diameter of the sealing head 18 from top to bottom effectively prevents wind and sand from entering the water inlet through the water inlet ring 19 and causing blockage. The coefficient of thermal expansion and contraction of the plug head 18 is greater than that of the water inlet ring 19. This allows the plug head 18 to expand and seal the gap between itself and the water inlet ring 19 when the temperature rises during the day, preventing water evaporation in the regulating column 1. When the temperature drops at night, the plug head 18 contracts, increasing the gap between itself and the water inlet ring 19, which facilitates the entry of condensate. This effectively achieves water vapor collection and avoids the ineffective waste of water.

[0026] Specifically, the length of the adjusting column 1 is 2m-3m, preferably 2.8m; the pitch of the spiral baffle 2 is 150mm-200mm, preferably 185mm; the angle between the baffle 2 and the horizontal line is 30°-40°, preferably 35°; the sealing head 18 can be made of vulcanized thermoplastic elastomer, such as Exxon 8221-60, and the water inlet ring 19 can be made of silicon carbide ceramic. The 35° inclined spiral baffle 2 can prevent internal water vapor loss and also support the adjusting column 1 from the inside, ensuring structural stability.

[0027] Example 2: Please refer to Figures 3-5. This example provides a sand-fixing and water-retaining device for soil and water conservation. This example is basically the same as Example 1, except that it also includes a secondary regulating column. The secondary regulating column includes an insert body 6. A control column 7 is slidably connected to the middle of the insert body 6. A plug rod 8 is hinged to the bottom of the control column 7. An opening 9 is provided on the periphery of the insert body 6.

[0028] This invention utilizes a secondary regulating column to assist in temperature conduction, reduce surface temperature variations, and promote seed growth. The control column 7 on the secondary regulating column allows workers to press down on it after the secondary regulating column is in place, causing the insertion rod 8 to extend through the opening 9, thus expanding the contact surface and increasing heat conduction.

[0029] In some embodiments of the present invention, a fixing ring 10 is further included. The fixing ring 10 is provided with a plurality of limiting ring openings 11 and a plurality of limiting insertion openings 12, with the limiting insertion openings 12 disposed between two adjacent limiting ring openings 11. An adjusting post 1 is disposed inside the limiting ring opening 11, and the auxiliary adjusting post is detachably connected to the limiting insertion opening 12. The fixing ring 10 can effectively fix the positions of the adjusting post 1 and the auxiliary adjusting post, and the seed, such as spruce, is planted inside the fixing ring 10. At the same time, the fixing ring 10 connected to the adjusting post 1 and the auxiliary adjusting post can assist in heat conduction.

[0030] Specifically, the regulating column 1, the secondary regulating column, and the fixing ring 10 are all made of silicon carbide, which allows for good heat conduction without hindering the formation of biofilms such as cyanobacteria. The angle between the secondary regulating column and the horizontal plane is 45°-60°. The inner diameter of the fixing ring 10 is 8m-12m, and at least four limiting ring openings 11 are provided.

[0031] In some embodiments of the present invention, the longitudinal section of the fixing ring 10 is arranged in an "I" shape. The "I"-shaped fixing ring 10 has higher stability, can effectively prevent displacement on sandy ground, and can make good contact with the ground for heat conduction. Furthermore, the fixing ring 10 can be configured as multiple arc-shaped rings that are interlocked with each other, which facilitates transportation and installation.

[0032] Example 3: Referring to Figure 6, this example provides a sand-fixing and water-retaining device for soil and water conservation. This example is basically the same as Example 2, except that: a water inlet 4 is provided on the column, and a water inlet bottle is detachably connected to the water inlet 4. The water inlet 4 is provided with a water inlet pipe 21 connected to the water storage cavity 3; a water inlet switch is provided on one side of the water storage cavity 3; the water inlet switch includes a vertical slide, a floating column 20 is provided in the vertical slide, and water inlet holes 22 are provided on both sides of the vertical slide, which are respectively connected to the water inlet pipe 21 and the water storage cavity 3; the bottom of the vertical slide is connected to the water storage cavity 3.

[0033] This invention, through the design of the water replenishment bottle, allows workers to quickly replenish water by simply changing the bottle. The water replenishment bottle also functions as an external water storage device, and can be made of a transparent material, making it easy for workers to observe the water level. A floating column 20 is installed within the vertical chute. When there is still water in the water storage chamber 3, the floating column 20 rises and blocks the water replenishment hole 22; when the water level in the water storage chamber 3 is low, the floating column 20 falls away from the water replenishment hole 22, and water from the water replenishment bottle enters the water storage chamber 3 through the water replenishment hole 22 to replenish the water. It is understood that the water replenishment port 4 is equipped with a snap-fit ​​structure and a sealing structure, and commonly available structural designs can be selected.

[0034] Example 4: Please refer to Figures 7-8. This example provides a sand-fixing and water-retaining device for soil and water conservation. This example is basically the same as Example 3, except that it also includes a photovoltaic panel. The photovoltaic panel includes a photovoltaic panel and a photovoltaic panel frame 13. The photovoltaic panel is set on the photovoltaic panel frame 13. A rotating seat is provided at the bottom of the photovoltaic panel frame 13. Multiple diversion protrusions 14 are provided at the bottom of the photovoltaic panel frame 13. The bottom end of the diversion protrusions 14 is located above the water diversion component.

[0035] This invention utilizes photovoltaic panels to adjust their position and angle for shading, preventing excessively high ground temperatures and protecting crops from wind and sand. The drainage protrusions 14 at the bottom of the photovoltaic panel frame 13 facilitate condensation collection. Specifically, the rotating base can include a horizontal turntable 17 with a horizontal rotating shaft 15 and a vertical rotating shaft 16 below it; both the horizontal and vertical rotating shafts 15 and 16 are equipped with drive motors. While cyanobacteria require sunlight for growth, prolonged exposure to sunlight and high temperatures can negatively impact their survival rate. The photovoltaic panel frame 13, with its adjustable tilt angle and direction, can shade and cool the sandy ground below when needed, promoting cyanobacteria growth. Spruce seedlings are fragile in their early growth stages; the adjustable photovoltaic panel frame 13 can stand upright when necessary, providing wind and sand protection for the inner spruce seedlings.

[0036] Furthermore, a power storage mechanism is installed on the fixing ring 10, and the photovoltaic panel is electrically connected to the power storage mechanism. An electric heating mechanism is also installed on the fixing ring 10, which is powered by the power storage mechanism to prevent the plants from freezing to death due to excessively low temperatures at night. Even further, photosensitive components are installed at both the upper and lower ends of the photovoltaic panel frame 13. The photosensitive components allow for adjustment of their position and tilt according to sunlight conditions, facilitating shading.

[0037] This application provides a method for soil and water conservation to fix sand and retain water, specifically including the following steps: Step 1: Plan the sand control site, set up regulating column 1, and plant cyanobacteria; Step 2: Regulate the temperature of the surface sand by regulating column 1 during the day and night, and collect water by using the temperature difference between the surface and the ground to assist the growth of cyanobacteria; Step 3: Regularly observe the growth of the plants and maintain the device; Step 4: After the cyanobacteria form a crust to improve the surface environment, plant the plants.

[0038] First, staff surveyed the site environment, planned sand control sites, and determined locations for planting species such as spruce. Then, according to the plan, they installed fixed rings 10, regulating columns 1, and secondary regulating columns, and inoculated cyanobacteria to prepare the sand for biological crust formation. The installed regulating column 1 effectively collects and infiltrates water, and can regulate the sand temperature. Staff can quickly observe and maintain the sand control work using water replenishment bottles, greatly reducing maintenance costs and improving work efficiency. They can also observe the growth of the species to determine whether to add more regulating columns 1 or other devices to enhance water collection and temperature regulation. After the sand conditions improve, spruce is planted for long-term biological sand control. This invention, by setting up regulating columns 1, achieves biological sand fixation of multiple species from the initial cyanobacteria growth and crust formation to the later planting of spruce, effectively improving the surface temperature environment and water collection, significantly shortening the sand control cycle and improving efficiency.

[0039] In some embodiments of the present invention, in step four, the cyanobacterial crust coverage rate is ≥20%. The regulating column 11, in conjunction with the photovoltaic panel, can effectively collect and supply water, thereby improving the efficiency of cyanobacterial crust formation, significantly shortening the initial improvement time for sandy land, achieving the target crust coverage rate in 2-3 months, and improving the efficiency of biological desertification control.

[0040] In summary, embodiments of the present invention provide a soil and water conservation device and method for sand fixation and water retention, comprising an adjusting column 1, the adjusting column 1 comprising a column body, the column body being hollow and provided with a spiral baffle 2, the spiral baffle 2 being arranged along the length direction of the adjusting column 1; a water storage cavity 3 being provided at the bottom of the column body, a water inlet being provided at the top of the column body, and a water distribution port 25 being provided on the side of the column body; the two ends of the adjusting column 1 are respectively located at the surface and underground, and heat conduction is carried out through the temperature difference between the surface and underground to regulate the surface temperature. This invention utilizes a hollow regulating column 1 to regulate the temperature difference between the sandy surface and its depth after insertion. This, combined with a constant temperature deep underground, effectively alleviates the problem of daytime heat and nighttime cold on the surface, reducing the impact of extremely high or low daytime temperatures on plant growth. Simultaneously, a spiral baffle 2 within the regulating column 1 ensures that during the day, the upper part of the column 1 is warmer than the lower part, allowing external water vapor to condense from top to bottom for easy water collection. At night, the upper part of the column 1 is warmer than the lower part, causing internal water vapor to condense from bottom to top, preventing water loss. The spiral baffle 2 not only effectively blocks internal water vapor from escaping but also significantly increases the contact area for external water vapor, effectively improving water condensation and collection efficiency. The water storage cavity 3 at the bottom of the regulating column 1 contains liquid water, which can evaporate and increase the surrounding moisture through the water distributor 25, facilitating plant growth. Furthermore, the main structure of the device of this invention is located underground, which makes it highly resistant to wind and sand erosion, has a long service life, and low maintenance costs.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sand-fixing and water-retaining device for soil and water conservation, characterized in that, The system includes a regulating column, which comprises a column body. The column body is hollow and equipped with a spiral baffle, which is arranged along the length of the regulating column. A water storage cavity is provided at the bottom of the column body, a water inlet is provided at the top of the column body, and a water distribution outlet is provided on the side of the column body. The two ends of the regulating column are located at the surface and underground, respectively, and heat conduction is carried out through the temperature difference between the surface and underground to regulate the surface temperature.

2. The soil and water conservation sand-fixing and water-retaining device according to claim 1, characterized in that, The water inlet is equipped with a water inlet assembly, which includes a water inlet ring. The water inlet ring is disposed on the water inlet, and a water inlet bucket is disposed above the water inlet ring. A sealing head is disposed on the inner side of the water inlet ring, and the outer diameter of the sealing head gradually increases from top to bottom. A gap is left between the sealing head and the water inlet ring. The coefficient of thermal expansion and contraction of the sealing head is greater than that of the water inlet ring.

3. The soil and water conservation sand-fixing and water-retaining device according to claim 1, characterized in that, It also includes a secondary adjustment column, which includes an insert body, a control column slidably connected to the middle of the insert body, a plug rod hinged to the bottom of the control column, and an opening on the periphery of the insert body.

4. The soil and water conservation sand-fixing and water-retaining device according to claim 3, characterized in that, It also includes a fixing ring, which is provided with multiple limiting ring openings and multiple limiting insertion ports. The limiting insertion ports are located between two adjacent limiting ring openings. The adjusting post is located inside the limiting ring opening, and the auxiliary adjusting post is detachably connected to the limiting insertion port.

5. The soil and water conservation sand-fixing and water-retaining device according to claim 4, characterized in that, The longitudinal section of the fixing ring is arranged in an "I" shape.

6. The soil and water conservation sand-fixing and water-retaining device according to claim 1, characterized in that, The column is provided with a water inlet, and a water bottle is detachably connected to the water inlet. The water inlet is provided with a water supply pipe that connects to the water storage cavity. A water supply switch is provided on one side of the water storage cavity. The water supply switch includes a vertical slide groove, in which a floating column is provided. Water supply holes are provided on both sides of the vertical slide groove, which are respectively connected to the water supply pipe and the water storage cavity. The bottom of the vertical slide groove is connected to the water storage cavity.

7. A method for sand fixation and water conservation in soil and water conservation, characterized in that, Using the sand-fixing and water-retaining device according to any one of claims 1-6 for sand fixation and water retention specifically includes the following steps: Step 1: Plan the sand control site, set up regulating columns, and plant cyanobacteria; Step 2: Regulate the temperature of the surface sand by regulating the day and night through the regulating columns, and collect water by utilizing the temperature difference between the surface and the ground to assist the growth of cyanobacteria; Step 3: Regularly observe the growth of the plants and maintain the device; Step 4: After the cyanobacteria have formed a crust and improved the surface environment, plant the plants.

8. The method for soil and water conservation and sand fixation according to claim 7, characterized in that, In step four, the cyanobacteria crust coverage rate is ≥20%.

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