Method for sand control by watered planting

Abstract

The application discloses a water-carrying planting method for sand control, and belongs to the technical field of water-carrying planting sand control, and comprises the following steps: S1, pretreatment: selecting a sugarcane grass multi-node and easy-to-root plant section, and placing a lower section of the section into a degradable plastic water storage bottle containing clean water and nutrient solution; S2, punching: vertically pressing a hard sleeve into a desert quicksand layer; S3, implanting: vertically placing a prepared water-carrying planting unit into a planting hole; S4, backfilling: pulling out the sleeve, and automatically backfilling the quicksand; S5, later-stage management and protection: continuously supplying water to the plant section by means of the degradable plastic bottle, and after the plant root system is developed completely and grows normally; the water-carrying planting unit is formed by adopting a modified anti-ultraviolet PBAT airtight water storage bottle matched with a grafting film sealing bottle mouth, a continuous water conveying channel is formed by means of water and fertilizer in the airtight bottle body and the sugarcane grass stem, and a stable water-carrying and potential life system is formed, which continuously supplies water and nutrients to the base by means of the plant self-conveying and guiding organization.

Description

Technical Field

[0001] This invention relates to the field of hydroponic desertification control technology, and more specifically, to a method for hydroponic desertification control. Background Technology

[0002] Currently, this is the only core technology that can achieve long-term sand control and build a native sand-fixing barrier, and it is also the mainstream development direction of the industry. However, the existing vegetation sand control planting technology system is imperfect and has many technical defects that urgently need to be solved: the sandy land has extremely poor water and fertilizer retention capacity, and water and fertilizer quickly seep out and evaporate after conventional planting, requiring frequent artificial irrigation and fertilization, resulting in extremely high water consumption and maintenance costs. Seedlings are prone to death due to drought stress, and the survival rate of planted vegetation is low. Desert shifting sand has no binding force, and conventional hole-drilling planting is prone to hole wall collapse and hole narrowing problems, resulting in poor construction quality and low efficiency. After planting, the plants have insufficient wind resistance and are easily buried by wind and sand or fall over and die. Current planting methods mostly use bare planting or direct planting of bare seedlings. In the early stages, seedlings lack continuous water and fertilizer supply. The barrenness of the sandy land and mild salinity stress can inhibit bud germination and root differentiation, resulting in slow root development, insufficient root depth, and inability to independently absorb groundwater from the sandy land. The survival of the plants is highly dependent on artificial management, making it difficult to achieve self-sustaining and long-term sand fixation. Existing water-supported planting aids are mostly made of ordinary plastic, which has poor resistance to desert strong light, high temperature, and temperature difference weathering. They have a short service life and cannot be naturally degraded, easily producing plastic residues and causing secondary pollution to the sandy land. Conventional biodegradable materials cannot adapt to the special environment of desert with few microorganisms and strong light. Their degradation cycle does not match the vegetation growth cycle, making it impossible to simultaneously ensure the stability of the water-retaining structure in the early stage and the requirement of no residue in the later stage.

[0003] Therefore, we have made improvements to this and proposed a method of planting in water for desertification control. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the purpose of this invention is to provide a method for planting in water for desertification control.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: including the following steps: S1. Pretreatment: Select plant segments of sugarcane grass that have many nodes and are easy to root. Place the lower segments of the plant segments into a biodegradable plastic water storage bottle containing clean water and nutrient solution. Keep two segments with buds in the bottle. Use grafting film to wrap and tie the bottle mouth and the junction of the plant segments to seal and fix them, forming an integrated water-bearing planting unit that has its own water to maintain its life potential. S2. Drilling: A rigid sleeve is vertically pressed and inserted into the quicksand layer of the desert. The sleeve sidewall is used to prevent the quicksand from collapsing, forming an upright planting hole with a depth of 45cm to 50cm. S3, Implantation: The prepared water-bearing planting unit is vertically placed into the planting hole, keeping the plant segment coaxial with the planting hole; S4. Backfilling: Pull out the sleeve, and the quicksand will automatically backfill, fixing the biodegradable plastic water storage bottle and plant seed section; S5. Post-construction management: Relying on the stable water potential formed inside the sealed water storage bottle, the plastic bottle will gradually degrade naturally in the desert sand environment after the plant roots have fully developed and are growing normally.

[0006] Preferably, the biodegradable plastic water storage bottle is made of modified PBAT biodegradable plastic through one-piece injection molding. The material has been treated with anti-ultraviolet modification to make it suitable for use in the desert environment with long-term strong light and high temperature weathering. The bottle body is completely sealed and waterproof, relying on the sealed water inside the bottle and the sugarcane grass seed section to form a continuous water potential conduction system, and relying on the plant stem vascular tissue to continuously supply water and fertilizer upwards. The wall thickness of the water storage bottle is processed and controlled to be 1.8mm~2.2mm.

[0007] Preferably, sugarcane grass seed segments are selected with a single stem length of 6cm to 8cm, and the total number of segments used in a single seed segment is no less than 4. The stems are perennial sugarcane grass from sunny, non-saline-alkali wastelands around deserts, with the lignification degree of the stems controlled at 30% to 40%. When cutting the seed segments, both ends are cut at a uniform 45° angle to increase the contact area for water and fertilizer absorption. Moldy, insect-infested, and dormant shriveled buds are manually sorted and removed, leaving only fresh, plump buds with growth bases. When assembling the planting units, they are placed in an oriented manner, with the two segments with buds inside the bottle facing down and immersed in the water and fertilizer solution, and the two segments with buds outside the bottle facing up and exposed. After assembly, grafting film is tightly wrapped in multiple layers around the bottle mouth and the connection point of the seed segments, and the binding is tight and sealed to prevent water vapor from leaking out of the bottle and external wind and sand from entering, thus constructing a complete, sealed, self-sustaining water-supporting life system.

[0008] Preferably, irrigation water and sandy soil rooting nutrient solution are mixed on-site at a volume ratio of 8:1 to 10:1. The raw material ratio includes 0.2% indolebutyric acid and 3.5% humic acid by mass, combined with slow-release nitrogen, phosphorus, potassium and chelated trace elements. Indolebutyric acid can stimulate the rapid differentiation of adventitious roots at the nodes of sugarcane grass, and humic acid weakens the salt and alkali stress of sandy soil and the micro-water environment in the bottle, and provides slow-release nutrients for long-term bud germination. After the water and fertilizer are mixed, let stand and aerate for 20 to 30 minutes before filling into bottles.

[0009] Preferably, the water and fertilizer filling volume inside the water storage bottle accounts for 65% to 75% of the bottle's volume, with the remaining 25% to 35% space reserved as a sealed buffer air chamber. Given the extreme temperature differences between day and night in the desert, the air inside the bottle can balance the internal air pressure by coordinating with the thermal expansion and contraction of the water, maintaining a stable water potential and ensuring continuous water absorption by the seed segments. After the seed segments are inserted into the bottle opening, the annular gap between the outer wall of the seed segments and the bottle opening is sealed with multiple layers of grafting film, with an equivalent sealing thickness of 4mm to 6mm. This seal not only isolates the high-temperature airflow of the desert, significantly reducing water evaporation loss inside and at the bottle opening, but also prevents surface sand from entering the bottle through the gaps, soaking the upper buds and causing them to rot and die. The sealed bottle body and grafting film structure form a stable, self-sustaining water-carrying life carrier.

[0010] Preferably, the rigid sleeve used for drilling is an integral hot-dip galvanized alloy steel pipe, with a galvanized surface layer to resist wind and sand abrasion and salt and alkali corrosion of the sandy land; the finished sleeve has an outer diameter of 100mm to 120mm and a wall thickness of 1mm to 1.2mm. The lower end of the sleeve is integrally machined with an outwardly flared conical cutting edge, with a chamfer of 15° to 20°. During actual drilling operations, the conical cutting edge first breaks through the solidified wind-blown sand crust on the surface of the sandy land, and the sleeve wall supports the flow of sand in the hole wall throughout the process, offsetting the lateral collapse stress of the sand and soil; the original dry sand surface of the desert does not need to be moistened and can be drilled directly; the operator presses the sleeve vertically and at a uniform speed, maintaining a pressing speed of 8cm / s to 12cm / s. Pressing too fast will squeeze the sand in the hole wall to loosen, while pressing too slow will easily cause the flow of sand to backfill and block the hole.

[0011] Preferably, drilling operations in the sandy areas are carried out from 5:00 to 9:00 every morning, when the sand temperature is low, the air humidity is high, and the sand particles are less mobile; the original desert sand surface is kept in its original dry state for direct construction; the spacing between the rows and columns of planting holes is uniformly set at 50cm×50cm grid arrangement, which takes into account the growth space of individual sugarcane grasses, while forming a continuous sand-fixing vegetation belt to improve the overall windbreak and sand-fixing effect.

[0012] Preferably, after the water-bearing planting unit is placed into the planting hole, a 3cm to 5cm gap is left between the bottom of the water storage bottle and the bottom of the planting hole. This gap forms a bottom ventilation channel, enabling air convection and exchange within the hole. At the same time, the top of the planting segment is completely buried inside the sand layer, with the top of the planting segment about 3cm below the surface of the sand. There are no exposed stems or buds throughout the process, completely avoiding the problems of wind and sand burial, stem drying, and root damage caused by strong winds.

[0013] Preferably, the sleeve should be pulled out vertically and coaxially with the planting hole, with a pulling speed of 5cm / s to 8cm / s. Tilting or forcefully pulling out the sleeve is prohibited. After the sleeve is completely removed from the sand, the surface sand should be gently smoothed by manually treading around the outside of the planting hole, with a compacted thickness of 1cm to 2cm. Compaction increases the interlocking friction of the surface sand particles, fixes the upper position of the water storage bottle, reduces the amplitude of the plant's back-and-forth swaying caused by desert winds, avoids the tearing and breakage of the newly grown tender roots, and improves the wind resistance stability of the entire planting unit in the field.

[0014] Preferably, the water storage bottle is made of photo-oxidation and biologically modified PBAT biodegradable plastic, which is suitable for the special environment of desert with strong sunlight, low microbial content and large diurnal temperature difference. The natural open-air degradation cycle is 6 to 8 months, which is exactly the same as the rooting and growth cycle of sugarcane grass. In the early stage, the material has a complete and airtight structure and does not leak, which can stably maintain the water supply in the bottle. In the later stage, it relies on desert ultraviolet radiation to decompose and the indigenous microorganisms in the sand layer to decompose and integrate into the sandy soil organic matter. There are no particulate plastic residues that pollute the soil. The field standard for judging the root survival is: the length of the single lateral root of the seed segment is ≥12cm.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a modified UV-resistant PBAT sealed water storage bottle with a grafting film to seal the bottle mouth, forming an integrated water-bearing planting unit. The sealed bottle body, along with the sugarcane stalks, creates a continuous water transport channel, forming a stable, self-sustaining water-based life system. The plant's own vascular tissue continuously delivers water and nutrients to the base, compensating for the poor water and fertilizer retention capacity and rapid evaporation and leakage of water and fertilizer in desert sandy soil. The grafting film, wrapped in multiple layers, completely seals the bottle mouth, preventing water vapor loss and sandstorm intrusion. The accompanying specially formulated rooting nutrient solution effectively alleviates saline-alkali stress in sandy areas, promotes rapid differentiation of adventitious roots, and significantly improves the germination efficiency and survival rate of seedlings in extreme desert environments. This fundamentally solves the problems of water and fertilizer deficiency, weak growth, and high mortality rates associated with traditional bare-planting methods.

[0016] 2. The use of a hot-dip galvanized alloy sleeve with a tapered cutting edge for drilling eliminates the need for pre-spraying water in sandy areas, allowing direct drilling and planting in the native desert. This simplifies the construction process and saves significant amounts of water and labor for desertification control. The sleeve provides full support to the sand-filled hole walls, effectively solving the construction problems of hole collapse, hole shrinkage, and irregular hole shapes caused by shifting sand in the desert. Through precise control measures such as limiting the construction period to a specific low temperature and controlling the drilling and sleeve extraction rates, the planting holes are ensured to be upright and regular, allowing for stable formation without additional sand wetting. This avoids disturbing the sand body and shifting the planting unit during construction. Combined with a planting structure design adapted to the windy and sandy environment, the optimization of details such as bottom ventilation gaps, precise burial depth, and surface sand compaction effectively avoids problems such as bud burial, plant lodging, root pulling and breakage, and oxygen deficiency necrosis. This greatly improves the wind resistance and survival ability of the entire planting unit in the desert wind and native dry shifting sand environment. The simplified process significantly enhances the technological advancement.

[0017] 3. Achieving residue-free green desertification control and long-term sand fixation without maintenance, significantly reducing project operation and maintenance costs. This invention uses photo-oxidation and biologically modified PBAT materials. The degradation cycle of the water storage bottle is precisely matched with the rooting and maturation cycle of sugarcane grass. The material structure is stable in the early stage, which can guarantee the supply of water and fertilizer throughout the seedling growth stage. After the plant roots have matured and can independently absorb groundwater from the sandy land to survive, the water storage bottle can be gradually and completely degraded in the desert environment, transforming into sandy organic matter without plastic microparticle residue, completely eliminating the secondary pollution problems caused by traditional planting equipment. After the entire planting system is formed, there is no need for artificial watering, fertilization, or replanting maintenance. The plants can grow and fix sand independently and continuously, getting rid of the disadvantages of long-term high-frequency maintenance, large water consumption, and high operation and maintenance costs of traditional desertification control projects. It can quickly build a continuous and stable sand-fixing vegetation belt, which is suitable for large-scale desert ecological restoration projects, with significant ecological and economic benefits. Attached Figure Description

[0018] Figure 1 A flowchart illustrating a method for desertification control through hydroponic planting, as provided in this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0020] A method for desertification control through hydroponic planting includes the following steps: S1. Pretreatment: Select plant segments of sugarcane grass that have many nodes and are easy to root. Place the lower segments of the plant segments into a biodegradable plastic water storage bottle containing clean water and nutrient solution. Keep two segments with buds in the bottle. Use grafting film to wrap and tie the bottle mouth and the junction of the plant segments to seal and fix them. S2. Drilling: A rigid sleeve is vertically pressed and inserted into the quicksand layer of the desert. The sleeve sidewall is used to prevent the quicksand from collapsing, forming an upright planting hole with a depth of 45cm to 50cm. S3, Implantation: The prepared water-bearing planting unit is vertically placed into the planting hole, keeping the plant segment coaxial with the planting hole; S4. Backfilling: Pull out the sleeve, and the quicksand will automatically backfill, fixing the biodegradable plastic water storage bottle and plant seed section; S5. Post-construction management: Relying on the stable water potential formed inside the sealed water storage bottle, after the plant roots have fully developed and are growing normally, the plastic bottle will gradually degrade naturally in the desert sand environment, with no plastic residue pollution.

[0021] Furthermore, the biodegradable plastic water storage bottle is made of modified PBAT biodegradable plastic through one-piece injection molding. The material has undergone UV-resistant modification treatment, making it suitable for use in the long-term strong sunlight and high-temperature weathering environment of the desert. The bottle body is completely sealed and waterproof, relying on the sealed water inside the bottle and the sugarcane grass seed segments to form a continuous water potential conduction system, and relying on the plant stem's vascular tissue to continuously supply water and fertilizer upwards. The wall thickness of the water storage bottle is processed and controlled to be 1.8mm to 2.2mm, which not only meets the requirement of not deforming when the sleeve is pressed into the soil, but also matches the controllable degradation rhythm of vegetation growth.

[0022] Furthermore, sugarcane grass segments with a single stem length of 6cm to 8cm are selected, and the total number of segments used in a single segment is no less than 4. The segments are perennial sugarcane grass stems grown in sunny, non-saline-alkali wastelands around deserts, with the lignification degree of the stems controlled at 30% to 40%. When cutting the segments, both ends are uniformly cut at a 45° angle to increase the contact area for water and fertilizer absorption. Moldy, insect-infested, and dormant shriveled buds are manually sorted and removed, leaving only fresh, plump buds with growth bases. When assembling the planting units, they are oriented, with the two segments with buds inside the bottle facing down and immersed in the water and fertilizer solution, and the two segments with buds outside the bottle facing up and exposed. After assembly, grafting film is tightly wrapped around the bottle mouth and the connection point of the segments in multiple layers, and the seal is sealed to prevent water vapor from escaping from the bottle and external wind and sand from entering, thus achieving targeted underground rooting and above-ground seedling growth.

[0023] Furthermore, irrigation water and sandy soil rooting nutrient solution are mixed on-site at a volume ratio of 8:1 to 10:1. This rooting nutrient solution is formulated to suit desert soil conditions. The raw material ratio includes 0.2% indolebutyric acid and 3.5% humic acid by mass, combined with slow-release nitrogen, phosphorus, potassium and chelated trace elements. Indolebutyric acid can stimulate the rapid differentiation of adventitious roots at the nodes of sugarcane grass, and humic acid can weaken the salt and alkali stress in sandy soil and the micro-water environment in the bottle, and provide long-term supply of nutrients for bud germination. After the water and fertilizer are mixed, they are left to stand and aerated for 20 to 30 minutes before being bottled.

[0024] Furthermore, the water and fertilizer filling volume inside the storage bottle accounts for 65% to 75% of the bottle's volume, leaving 25% to 35% of the space as a sealed buffer air chamber. Due to the extreme temperature difference between day and night in the desert, the air inside the bottle can balance the internal air pressure by coordinating with the thermal expansion and contraction of the water, maintaining a stable water level inside the bottle and ensuring continuous water absorption by the seed segments. After the seed segments are inserted into the bottle mouth, the annular gap between the outer wall of the seed segments and the bottle mouth is sealed by wrapping and binding with multiple layers of grafting film throughout the process. The equivalent sealing thickness of the wrapping is 4mm to 6mm. After sealing, it can not only isolate the high-temperature airflow in the desert and reduce the loss of water evaporation at the bottle mouth, but also prevent the surface sand from entering the bottle along the gap and soaking the upper buds, causing them to rot and die.

[0025] Furthermore, the rigid sleeve used for drilling is an integral hot-dip galvanized alloy steel pipe. The galvanized layer on the surface resists wind and sand abrasion and salt and alkali corrosion of the sandy land. The finished sleeve has an outer diameter of 100mm to 120mm and a wall thickness of 1mm to 1.2mm. The lower end of the sleeve is integrally machined with an outwardly flared conical cutting edge with a chamfer of 15° to 20°. During actual drilling operations, the conical cutting edge first breaks through the solidified wind-blown sand crust on the surface of the sandy land. The sleeve wall supports the flow of sand in the hole throughout the process, offsetting the lateral collapse stress of the sandy soil. The operator presses the sleeve vertically and at a uniform speed, maintaining a pressing speed of 8cm / s to 12cm / s. Pressing too fast will squeeze the sand in the hole wall to loosen it, while pressing too slowly will cause the flow of sand to backfill and block the hole. Ultimately, it ensures that the vertical deviation of the formed planting hole is less than 2° and that the hole wall is regular and without collapse.

[0026] Furthermore, drilling operations in the sandy areas are carried out daily from 5:00 to 9:00 AM. During this period, the sand temperature is low, the air humidity is high, and the sand particles are less mobile, avoiding the construction shortcomings of the sand being fluidized and prone to collapse at noon due to high temperatures. The original dry state of the desert sand surface is maintained for direct construction, simplifying the process and saving water resources for desertification control. In the entire desertification control area, the spacing between planting holes is uniformly arranged in a 50cm×50cm grid pattern, which takes into account the growth space of individual sugarcane grasses, while forming a continuous sand-fixing vegetation belt to improve the overall windbreak and sand-fixing effect.

[0027] Furthermore, after the water-bearing planting unit is lowered into the planting hole, a 3cm to 5cm gap is left between the bottom of the water storage bottle and the bottom of the planting hole. This gap forms a bottom ventilation channel, enabling air convection and ventilation within the hole, preventing moisture accumulation at the bottom of the water storage bottle, and eliminating the risk of oxygen deficiency and necrosis of the newly formed roots. At the same time, the top of the planting segment is completely buried inside the sand layer, with the top of the segment about 3cm below the surface of the sand. There are no exposed stems or buds throughout the process, completely avoiding the problems of wind and sand burial, stem drying, and root damage caused by strong winds. The constant temperature and moisture environment of the sand layer protects the buds from germination.

[0028] Furthermore, when pulling out the sleeve, it must be pulled vertically upwards, coaxial with the planting hole, at a stable upward pulling speed of 5cm / s to 8cm / s. During construction, tilting and pulling, or forcibly pulling out the sleeve, are prohibited to prevent disturbance of the surrounding quicksand, squeezing and shifting, or pushing over the planting unit. After the sleeve is completely detached from the sand, manually tread lightly along the perimeter of the planting hole to smooth the surface quicksand, compacting the surface layer to a thickness of 1cm to 2cm. Compaction increases the interlocking friction of the surface sand particles, fixes the upper position of the water storage bottle, reduces the amplitude of the plant's back-and-forth swaying caused by desert winds, avoids the new tender roots being pulled and broken, and improves the wind resistance stability of the entire planting unit in the field.

[0029] Furthermore, the water storage bottle is made of photo-oxidation and biologically modified PBAT biodegradable plastic, which is suitable for the special environment of desert with strong sunlight, low microbial content, and large temperature difference between day and night. The natural open-air degradation cycle is 6 to 8 months, which is exactly the same as the rooting and growth cycle of sugarcane grass. The material has a dense structure in the early stage, which can stably retain water and prevent seepage. In the later stage, it relies on desert ultraviolet radiation to decompose and the indigenous microorganisms in the sand layer to decompose and integrate into the sandy soil organic matter. There are no particulate plastic residues that pollute the soil. The field standard for judging the survival of the root system is: the length of the lateral root at the base of the seed segment is ≥12cm, the number of effective water-absorbing and rooting lateral roots is not less than 8, and the root system can penetrate the surrounding sand layer to draw groundwater from the sandy soil. It can then be separated from the bottle for water and fertilizer supply. No artificial watering or fertilization is required in the later stage, and the plant can survive and fix the sand on its own.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0031] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A method for planting crops with irrigation water for desertification control, characterized in that, Includes the following steps: S1. Pretreatment: Select plant segments of sugarcane grass that have many nodes and are easy to root. Place the lower segments of the plant segments into a biodegradable plastic water storage bottle containing clean water and nutrient solution. Keep two segments with buds in the bottle. Use grafting film to wrap and tie the bottle mouth and the junction of the plant segments to seal and fix them. S2. Drilling: A rigid sleeve is vertically pressed and inserted into the quicksand layer of the desert. The sleeve sidewall is used to prevent the quicksand from collapsing, forming an upright planting hole with a depth of 45cm to 50cm. S3, Implantation: The prepared water-bearing planting unit is vertically placed into the planting hole, keeping the plant segment coaxial with the planting hole; S4. Backfilling: Pull out the sleeve, and the quicksand will automatically backfill, fixing the biodegradable plastic water storage bottle and plant seed section; S5. Post-construction management: Relying on the stable water potential formed inside the sealed water storage bottle, the plastic bottle will gradually degrade naturally in the desert sand environment after the plant roots have fully developed and are growing normally.

2. The method for planting crops with irrigation water for desertification control according to claim 1, characterized in that, The biodegradable plastic water storage bottle is made of modified PBAT biodegradable plastic through one-piece injection molding. The material has been treated with UV resistance modification to make it suitable for use in desert environments with long-term strong sunlight and high temperature weathering. The bottle body is completely sealed and waterproof, relying on the sealed water inside the bottle and the sugarcane grass seed segments to form a continuous water potential conduction system, and relying on the plant stem's vascular tissue to continuously supply water and fertilizer upwards. The wall thickness of the water storage bottle is processed and controlled to be 1.8mm to 2.2mm.

3. The method for planting crops with irrigation water for desertification control according to claim 1, characterized in that, Select sugarcane grass segments with a single stem length of 6cm to 8cm, and each segment should have at least 4 segments. Use perennial sugarcane grass stems grown in sunny, non-saline-alkali wastelands near deserts, with a lignification level of 30% to 40%. When cutting the segments, make a uniform 45° angled cut at both ends to increase the contact area for water and fertilizer absorption. Manually sort and remove moldy, insect-infested, and dormant, shriveled buds, leaving only fresh, plump buds with growth bases. When assembling planting units, place them oriented so that the two segments with buds inside the bottle are immersed in the water and fertilizer solution with the bottom facing down, and the two segments with buds outside the bottle are exposed with the top facing up. After assembly, use multiple layers of grafting film to tightly wrap the bottle mouth and the connection point between the segments, and bind tightly to seal, preventing water vapor from escaping and external wind and sand from entering.

4. The method for planting crops with irrigation water for desertification control according to claim 1, characterized in that, Irrigation water and sandy soil rooting nutrient solution are mixed on-site at a volume ratio of 8:1 to 10:

1. The raw material ratio includes 0.2% indolebutyric acid and 3.5% humic acid by mass, combined with slow-release nitrogen, phosphorus, potassium and chelated trace elements. Indolebutyric acid can stimulate the rapid differentiation of adventitious roots at the nodes of sugarcane grass, and humic acid weakens the salt and alkali stress in sandy soil and the micro-water environment in the bottle, and provides slow-release nutrients for long-term bud germination. After the water and fertilizer are mixed, let stand and aerate for 20 to 30 minutes before filling into bottles.

5. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, The water and fertilizer filling volume of the water storage bottle is 65% to 75% of the bottle volume, and the remaining 25% to 35% space is reserved as a sealed buffer air chamber. In the desert, the temperature difference between day and night is extreme. The air inside the bottle can cooperate with the thermal expansion and contraction of the water to balance the internal air pressure, maintain a stable water level inside the bottle, and ensure that the seed section can continuously absorb water. After the seed segment is inserted into the bottle mouth, the annular gap between the outer wall of the seed segment and the bottle mouth is sealed by wrapping and binding with multiple layers of grafting film throughout the process. The number of grafting film layers is 4 to 6. After sealing, it can isolate the high temperature airflow in the desert.

6. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, The rigid sleeve used for drilling is made of one-piece hot-dip galvanized alloy steel pipe. The galvanized layer on the surface resists wind and sand abrasion and salt and alkali corrosion of sandy soil. The finished sleeve has an outer diameter of 100mm to 120mm and a wall thickness of 1mm to 1.2mm. The lower end of the sleeve is integrally machined with an outwardly flared conical cutting edge with a chamfer of 15° to 20°. During actual drilling operations, the conical cutting edge first breaks through the solidified wind and sand crust on the surface of the sandy soil. The sleeve wall supports the flow of sand in the hole throughout the process, offsetting the lateral collapse stress of the sandy soil. The operator should press down the sleeve vertically and at a constant speed, maintaining a speed of 8cm / s to 12cm / s. Pressing down too fast will cause the sand on the hole wall to loosen, while pressing down too slowly will cause the flowing sand to backfill and block the hole.

7. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, Drilling operations in the sandy area are carried out from 5:00 to 9:00 every morning. During this period, the temperature in the sandy area is low, the air humidity is high, and the sand particles are not very mobile. In the entire area of ​​desertification control, the spacing between the rows and columns of planting holes is uniformly arranged in a grid pattern of 50cm×50cm.

8. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, After the water-bearing planting unit is lowered into the planting hole, a 3cm to 5cm gap is left between the bottom of the water storage bottle and the bottom of the planting hole. This gap forms a bottom ventilation channel, enabling air convection and ventilation inside the hole. At the same time, the top of the planting segment is completely buried inside the sand layer, with the top of the planting segment about 3cm away from the surface of the sand. There are no stems or buds exposed throughout the process, completely avoiding the problems of wind and sand burial, stem drying, and root damage caused by strong winds.

9. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, When pulling out the sleeve, it must be pulled vertically upwards, keeping it coaxial with the planting hole. The pulling speed should be stable at 5cm / s to 8cm / s. During construction, tilting or forcefully pulling out the sleeve is prohibited. After the sleeve is completely removed from the sand, manually tread lightly along the outside of the planting hole to smooth the surface sand. The surface layer should be compacted to a thickness of 1cm to 2cm. Compaction increases the interlocking friction of the surface sand particles, fixes the upper position of the water storage bottle, and reduces the amplitude of the plant's back-and-forth swaying caused by the desert wind.

10. A method for desertification control through planting with irrigation as described in claim 1, characterized in that, The water storage bottle is made of photo-oxidation and biologically modified PBAT biodegradable plastic, which is suitable for the special environment of desert with strong sunlight, low microbial content and large temperature difference between day and night. The natural open-air degradation cycle is 6 to 8 months, which is exactly the same as the rooting and growth cycle of sugarcane grass. The material has a dense structure in the early stage and gradually decomposes and integrates into sandy soil organic matter. There is no particulate plastic residue that pollutes the soil. The field standard for judging root survival is: the length of a single lateral root at the base of the seed segment is ≥12cm.

Images