Groove type anti-leakage, water-storage and water-saving permanent farmland bottom irrigation system

Abstract

The utility model provides a groove type anti-leakage, water-storage and water-saving permanent farmland bottom irrigation system, which belongs to the technical field of farmland irrigation, is a buried bottom irrigation system, and comprises a water supply pipeline and a plurality of bottom irrigation parts communicated with the water supply pipeline, the single bottom irrigation part is buried below the planting groove and is parallel to the planting groove in the length direction; the bottom irrigation part comprises a water storage tank and a bottom irrigation pipe; a bottom irrigation pipe parallel to the water storage tank in the length direction is arranged in the water storage tank; the bottom irrigation pipe is communicated with the water supply pipeline, water outlet holes are formed in the bottom irrigation pipe at intervals, and openings of the water outlet holes face the inclined lower portion. The groove-type permanent farmland bottom irrigation system capable of preventing leakage, storing water and saving water is simple in overall operation, high in irrigation efficiency, capable of being used for a long time and suitable for wide popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of farmland irrigation, and in particular relates to a trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system. Background Art

[0002] The farmland irrigation methods currently used, such as surface drip irrigation, sprinkler irrigation, trench irrigation, and underground irrigation, all have different defects. Generally speaking, the main disadvantages are as follows: First, the operation is cumbersome and pipelines need to be laid every year, which wastes resources; second, it wastes water, and the drought prevention effect is not stable, with a large difference between drought and flood; third, it cannot guarantee timely irrigation in the event of drought, and because both drip irrigation and sprinkler irrigation require laying pipelines first, drought problems cannot be solved in a large area in a timely manner.

[0003] Due to the above reasons, there is currently no complete farmland irrigation system that can effectively solve the problem of agricultural drought.

[0004] The existing irrigation methods mainly include drip irrigation, sprinkler irrigation, and trench irrigation, all of which are to pour water on the surface and then infiltrate into the ground to solve the drought problem. However, these irrigation methods will lead to the loss of irrigation water. The specific reasons are as follows: First, due to the high proportion of surface water evaporated by the sun, it will lead to a loss of about 25% of the total water volume; second, the water that infiltrates into the ground (below saturation) will continue to infiltrate into the ground at a position where the plants cannot absorb it, which will lead to a loss of about 25-30% of the total water volume; third, all irrigation water will flow into the open space where no plants grow because it is generally irrigated from the ground. This water will also cause a loss of about 30% of the total water volume due to evaporation and infiltration; therefore, this results in less than 15% of the irrigation water being actually absorbed by the plants, and the remaining 75% of the irrigation water is wasted.

[0005] In addition, the existing irrigation technology method also requires the annual rearrangement of pipelines and sprinkler facilities, a large amount of equipment and material labor amortization, a low material reuse rate and high loss, and increased costs.

[0006] At the same time, since the irrigation facilities are all placed on the surface for use, they will be damaged when mechanical farming is carried out; at the same time, since the irrigation facilities and pipes need to be avoided during farming, the progress of farming will also be affected.

[0007] Therefore, it is necessary to provide a new irrigation system to solve the above irrigation problems. Utility Model Content

[0008] In view of the above problems, the utility model provides a trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system, the trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system is an underground irrigation system, including a water supply pipeline and a plurality of bottom irrigation parts connected to the water supply pipeline;

[0011] A single bottom irrigation part is buried under the planting trough and is parallel to the planting trough in the length direction;

[0012] The bottom irrigation section includes waterproofing, gravel water storage tank (i.e. gravel water storage node) and bottom irrigation pipe;

[0013] A bottom irrigation pipe is provided inside the water storage tank and is arranged parallel to the water storage tank in the length direction;

[0014] The bottom irrigation pipe is connected with the water supply pipeline, and water outlet holes are arranged at intervals on the bottom irrigation pipe.

[0015] Furthermore, the opening direction of the water outlet is obliquely downward.

[0016] Furthermore, the water storage tank is a rectangular waterproof tank body with an opening facing upward, which is composed of a bottom and two side walls. The two side walls and the bottom of the water storage tank are made of a waterproof layer, and the waterproof layer is made of a double-layer plastic film.

[0017] Furthermore, the two side walls of the water storage tank are located below the two sides of the planting tank and are parallel to the planting tank in the length direction.

[0018] Furthermore, a gravel aquifer is provided around the bottom irrigation pipe and inside the water storage tank.

[0019] Furthermore, the gravel aquifer is divided into two layers, the lower layer of the gravel aquifer is wrapped with a bottom irrigation pipe, and the lower layer of the gravel aquifer is composed of coarse gravel with a particle size of 8-10 mm;

[0020] The upper layer of the gravel aquifer is located above the lower layer of the gravel aquifer, and the upper layer of the gravel aquifer is composed of fine gravel with a particle size of 5-7mm.

[0021] Furthermore, the water supply pipeline includes a main water supply well, a main water supply pipe, a secondary water supply well and a secondary water supply pipe; the main water supply pipe and the secondary water supply pipe are both arranged underground;

[0022] Among them, the side wall of the main water supply well close to the bottom is connected to the main water supply pipe, the main water supply pipe is connected with the secondary water supply pipe in the secondary water supply well, and the secondary water supply pipe is simultaneously connected with multiple bottom irrigation pipes in the bottom irrigation part.

[0023] Furthermore, a control valve is provided between the main water supply pipe and the secondary water supply pipe.

[0024] Furthermore, the bottom irrigation pipes are divided into bottom irrigation pipes for use in the first year and bottom irrigation pipes for use in the second year, and the bottom irrigation pipes for use in the first year and the bottom irrigation pipes for use in the second year are arranged alternately.

[0025] Furthermore, the secondary water supply pipe is divided into a first-year secondary water supply pipe and a second-year secondary water supply pipe; the main water supply pipe is connected to the first-year secondary water supply pipe and the second-year secondary water supply pipe respectively;

[0026] The secondary water supply pipe for the first year and the secondary water supply pipe for the second year are both located below the plurality of bottom irrigation pipes for the first year and the plurality of bottom irrigation pipes for the second year in the depth direction;

[0027] The secondary water supply pipe for the first year is connected with a plurality of bottom irrigation pipes for the first year in the depth direction;

[0028] The secondary water supply pipe for the second year is connected with a plurality of bottom irrigation pipes for the second year in the depth direction.

[0029] The utility model is a trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system with the following beneficial effects:

[0030] The utility model is a trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system that can maintain optimal irrigation, ensure that plants do not lack water when they need it most, and provide plants with the water they need for growth in time, thereby increasing food production.

[0031] The utility model's trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system can also be combined with existing intelligent technologies such as using a PLC or DCS control system to control the control valve to achieve data management intelligent irrigation;

[0032] The bottom irrigation part of the trough-type anti-leakage, water-storage, water-saving, and permanent farmland bottom irrigation system of the utility model can play a role in water storage, so that the irrigation water is deposited in the water storage tank once after the irrigation is completed, and the irrigation water will slowly penetrate upward and be supplied to the plants for absorption; at the same time, it can also play a role in anti-leakage, that is, it can intercept and store water from the outside (such as rainwater) in the water storage tank for absorption by the roots of plants, thereby reducing the amount and frequency of irrigation water; in addition, the crushed stone water storage layer made of crushed stone inside the bottom irrigation part of the utility model can effectively play the role of water storage and dispersion. After one bottom irrigation, 85% of the soil between the planting trough and the bottom irrigation part will be saturated with water within 1.5 hours of pressure water supply. However, since the gravel gaps in the gravel aquifer also contain spare irrigation water, about 7 kilograms are stored in each meter of gravel aquifer. After the water is kept in the water tank for about 10 days, as the saturated water in the soil is gradually absorbed and evaporated by the plants, it slowly infiltrates and supplies the soil under the roots of the plants. Moreover, it is in a uniform and continuous supply state. This process will continue for more than 15 days without drought, thus achieving the purpose of not needing watering for more than 25 days during the drought period. The bottom irrigation part of the utility model can prevent leakage and evaporation, and can also extend the water retention time of the land, greatly reducing the amount and frequency of irrigation water. Compared with traditional irrigation, it can save 50% of water while achieving the same purpose of solving drought problems.

[0033] The utility model discloses a trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system. By setting the bottom irrigation part at -0.42m below the ground surface, the planting soil on the ground surface can protect the water from evaporation, which effectively solves the problem of surface evaporation of irrigation water. At the same time, the bottom irrigation part adopts a waterproof layer to prepare a water storage tank, which can effectively solve the problem of surface evaporation and irrigation water leakage to the ground. Based on this, the utility model discloses a trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system. Compared with other irrigation technologies, the irrigation water is basically not wasted, the water retention time is effectively extended, and the irrigation water and number of times are reduced.

[0034] The trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system of the utility model has the advantages of simple overall operation, high irrigation efficiency, long-term use, and is suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the plan layout of a trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system in the embodiment of the utility model;

[0036] Figure 2 It is a structural schematic diagram of the bottom irrigation part of a trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system in an embodiment of the utility model;

[0037] Figure 3It is a partial structural schematic diagram of the bottom irrigation part of a trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system in the embodiment of the utility model;

[0038] Figure 4 It is a cross-sectional schematic diagram of a main water supply well of a trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system in an embodiment of the utility model;

[0039] Figure 5 This is a cross-section of a secondary water supply well of a trough-type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system in the embodiment of the utility model. Figure 1 ;

[0040] Figure 6 This is a schematic diagram of the structure of a secondary water supply well of a trough-type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system in the embodiment of the utility model. Figure 2 ;

[0041] Figure 7 This is a schematic diagram of the connection between the secondary water supply pipe and the bottom irrigation pipe of a trough-type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system in the embodiment of the utility model. Figure 1 ;

[0042] Figure 8 This is a schematic diagram of the connection between the secondary water supply pipe and the bottom irrigation pipe of a trough-type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system in the embodiment of the utility model. Figure 2 ;

[0043] Among them: 1. Bottom irrigation part; 11. Water storage tank; 111. Waterproof layer; 12. Bottom irrigation pipe; 121. Bottom irrigation pipe for the first year; 122. Bottom irrigation pipe for the second year; 13. Water outlet; 14. Gravel aquifer; 141. Lower layer of gravel aquifer; 142. Upper layer of gravel aquifer; 15. Compacted soil layer; 2. Planting trough; 3. Main water supply pipe; 4. Secondary water supply pipe; 41. Secondary water supply pipe for the first year; 42. Secondary water supply pipe for the second year; 43. Secondary pipe trench cover; 5. Main water supply well; 51. Gravel filter layer; 6. Secondary water supply well; 7. Control valve; 71. First control valve; 72. Second control valve; 73. Control valve for the first year; 74. Control valve for the second year; 8. Drain valve. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the utility model are described clearly and completely below. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0045] Embodiment A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system

[0046] like Figure 1-Figure 4 As shown, a trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system, the farmland irrigation system is an underground irrigation system, including a water supply pipeline and a plurality of bottom irrigation parts 1 connected to the water supply pipeline;

[0047] A single bottom irrigation part 1 is buried in the planting soil directly below the planting trough 2 and is arranged parallel to the planting trough 2 in the length direction; the bottom irrigation part 1 includes a water storage tank 11 (i.e., a gravel water storage node) and a bottom irrigation pipe 12; the water storage tank 11 is an upward-opening rectangular waterproof tank body composed of a bottom and two side walls made of a waterproof layer 111, and the two side walls of the water storage tank 11 are located directly below the two sides of the planting trough 2 and are parallel to the planting trough 2 in the length direction, that is, the upper opening of the water storage tank 11 faces the planting trough 2 and is arranged parallel to the planting trough 2 in the length direction; the two side walls and bottom of the water storage tank 11 are usually made of a waterproof layer 111 made of a double-layer plastic film; the use of a double-layer plastic film to prepare the water storage tank 11 is not only low-cost but also durable (it can ensure that the water storage tank 11 will not rot underground for 20 years). The water storage tank 11 is provided with a bottom irrigation pipe 12 arranged parallel to the water storage tank 11 in the length direction, that is, the bottom irrigation pipe 12 is also arranged parallel to the planting trough 2. Water outlet holes 13 with a hole diameter of 5-6 mm are arranged at intervals on the bottom irrigation pipe 12. The opening direction of the water outlet holes 13 faces obliquely downward, which can prevent the water outlet holes 13 from being blocked (when the water outlet holes 13 face upward, they are easily blocked by gravel above. The water outlet holes 13 of the utility model face obliquely downward to effectively prevent blockage by gravel). At the same time, the water outlet holes 13 can also play a role of automatic water drainage to prevent damage to the bottom irrigation pipe 12 after frost heave in winter.

[0048] The bottom irrigation pipe 12 is connected to the water supply pipeline, which is used to supply water to the bottom irrigation pipe 12; a gravel aquifer 14 is provided around the bottom irrigation pipe 12 and inside the water storage tank 11, that is, the bottom irrigation pipe 12 is located inside the gravel aquifer 14, and gravel is generally used as the gravel aquifer 14; further, the gravel aquifer 14 may not fill the water storage tank 11, and a rammed soil layer 15 is also provided on both sides of the gravel aquifer 14 and inside the water storage tank 11, and the top is filled with planting soil. In addition, the gravel aquifer 14 can also be divided into two layers, the lower layer 141 of the gravel aquifer is wrapped with the bottom irrigation pipe 12, and is in the shape of a rectangular parallelepiped, and uses coarse gravel with a particle size of 8-10mm; the upper layer 142 of the gravel aquifer is located above the lower layer 141 of the gravel aquifer, and is a trapezoidal columnar shape with a width on the top and a narrowness on the bottom, and uses fine gravel with a particle size of 5-7mm. Using gravel as the gravel aquifer 14 can not only serve as a dredging medium for irrigation water, quickly and evenly transporting irrigation water to the bottom of the planting trough 2 located above the water storage tank 11, but also play a role in water storage, maintaining the dry period for more than 25 days without watering, and at the same time protect the water outlet 13 of the bottom irrigation pipe 12 from being blocked by soil, ensuring that subsequent irrigation can operate well.

[0049] The trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system of the utility model adopts the bottom irrigation part 1 of the above structure to play a role in water storage, keeping the irrigation water settled in the water storage tank 11 after the irrigation is completed, and the irrigation water will slowly penetrate upward to supply the plants for absorption; at the same time, it can also play a role in anti-leakage, that is, it can intercept and store water from the outside (such as rainwater) in the water storage tank 11 for absorption by the roots of plants, thereby reducing the amount and frequency of irrigation water; in addition, the gravel water storage layer 14 made of gravel inside the bottom irrigation part 1 of the utility model can effectively play the role of storing and dispersing water, After a bottom irrigation, 85% of the soil between the planting trough 2 and the bottom irrigation part 1 will be saturated with water within 1.5 hours of pressure water supply. However, since the gravel gaps in the gravel aquifer 14 also contain spare irrigation water, about 7 kilograms are stored in each meter of the gravel aquifer 14. After the water is kept in the water tank 11 for about 10 days, the saturated water in the soil is gradually absorbed and evaporated by the plants, and then slowly infiltrates and supplies to the soil under the roots of the plants. In addition, the water is supplied evenly and continuously. This process will last for more than 15 days without drought, thus achieving the purpose of not needing watering for more than 25 days during the dry season. The bottom irrigation part 1 of the utility model can prevent leakage and evaporation, and can also prolong the water retention time of the land, greatly reducing the amount and frequency of irrigation water. Compared with traditional irrigation, it can save 50% of water while achieving the same purpose of solving drought.

[0050] In actual application, the planting trough 2 is a trapezoidal trough with a depth of about -0.07m, an upper width of about 0.55m, and a lower width of about 0.4m; a water storage tank 11 with a height of about 0.25m and a width of about 0.5m is provided at -0.42m below the planting trough 2, and the water storage tank 11 is parallel to the planting trough 2, and the length of the water storage tank 11 is substantially the same as the length of the planting trough 2; a bottom irrigation pipe 12 with a diameter of 40-65mm is provided in the water storage tank 11, and coarse gravel with a thickness of about 0.08m and a width of about 0.2m is filled around the bottom irrigation pipe 12 and in the water storage tank 11 as the lower layer 141 of the gravel aquifer; compacted soil layers 15 are provided on both sides of the lower layer 141 of the gravel aquifer and inside the water storage tank 11, and the compacted soil layers 15 are located between the lower layer 141 of the gravel aquifer and the wall of the water storage tank 11, and the compacted soil layers 15 are located between the lower layer 141 of the gravel aquifer and the wall of the water storage tank 11. The soil layer 15 is in a trapezoidal column shape. The depth of the compacted soil layer 15 close to the lower layer 141 of the gravel aquifer is relatively small, and the depth of the lower layer 141 of the gravel aquifer is consistent. The depth of the compacted soil layer 15 far away from the lower layer 141 of the gravel aquifer and close to the side wall of the water storage tank 11 is relatively large, that is, greater than 0.08m and less than 0.25m; the upper part of the lower layer 141 of the gravel aquifer is filled with fine gravel with a particle size of 5-7mm as the upper layer 142 of the gravel aquifer. The upper layer 142 of the gravel aquifer is also in a trapezoidal column shape with a thickness of about 0.03m. The width at the bottom is consistent with the width above the lower layer 141 of the gravel aquifer, and the width at the top is greater than 0.2m; other parts of the water storage tank 11 and the top of the water storage tank 11 are filled with planting soil; the entire bottom irrigation part 1 is buried with planting soil directly below the planting trough 2.

[0051] Furthermore, in order to ensure more adequate irrigation, the diameter of the bottom irrigation pipe 12 gradually decreases from the position where the bottom irrigation pipe 12 is connected to the water supply pipeline to the end of the water storage tank 11, and the hole spacing of the water outlet holes 13 arranged at intervals on the bottom irrigation pipe 12 is 1.2-1.5m. That is, from the position connected to the water supply pipeline to the end of the water storage tank 11, the water inlet pressure of the entire bottom irrigation pipe 12 is designed to be 4 atmospheres, and the bottom irrigation pipe 12 sequentially adopts 40% of the total length of PE65 pipe, 35% of the total length of PE50 pipe and 25% of the total length of PE40 pipe, among which the hole spacing of the water outlet holes 13 on the PE65 pipe is 1.4m, the hole spacing of the water outlet holes 13 on the PE50 pipe is 1.3m, and the hole spacing of the water outlet holes 13 on the PE40 pipe is 1.2m.

[0052] In addition, colored markings are provided around the water outlet 13 to ensure that the opening direction of the water outlet 13 is obliquely downward during construction and installation.

[0053] At the same time, since there are multiple planting troughs 2 in the actual planting process, a bottom irrigation part 1 is provided under each planting trough 2; in this embodiment, in order to increase plant yield, a rotation cultivation method is adopted for planting, that is, the planting troughs 2 are divided into planting troughs for the first year and planting troughs for the second year, and the planting is alternately rotated in sequence. Therefore, in this embodiment, the multiple bottom irrigation parts 1 are also divided into bottom irrigation parts for the first year and bottom irrigation parts for the second year, and the bottom irrigation parts for the first year and the bottom irrigation parts for the second year are arranged alternately. Therefore, the bottom irrigation pipe 12 is also divided into bottom irrigation pipe 121 for the first year and bottom irrigation pipe 122 for the second year, and the bottom irrigation pipe 121 for the first year and the bottom irrigation pipe 122 for the second year are also arranged alternately.

[0054] The water supply pipeline includes a main water supply well 5, a main water supply pipe 3 and a secondary water supply pipe 4; the main water supply pipe 3 and the secondary water supply pipe 4 are both buried; wherein the main water supply well 5 is connected to the main water supply pipe 3 on the side wall near the bottom, the main water supply pipe 3 is connected to the secondary water supply pipe 4, and is arranged below the secondary water supply pipe 4 and parallel in the width direction, and a control valve 7 is provided between the main water supply pipe 3 and the secondary water supply pipe 4; a secondary water supply well 6 is opened along the main water supply pipe 3 in the width direction to facilitate control of the connection of the control valve 7 between the main water supply pipe 3 and the secondary water supply pipe 4.

[0055] The secondary water supply pipe 4 is simultaneously connected with the bottom irrigation pipes 12 in the multiple bottom irrigation parts 1; generally, the secondary water supply pipe 4 is located below the multiple bottom irrigation pipes 12, and is arranged vertically with the multiple bottom irrigation pipes 12, and is connected through a tee; that is, the bottom irrigation pipes 12 are arranged along the length direction, and the secondary water supply pipe 4 is arranged along the width direction. At this time, the secondary water supply pipe 4 is perpendicular to the bottom irrigation pipe 12, and the secondary water supply pipe 4 and the bottom irrigation pipe 12 are connected through a tee arranged in the depth direction.

[0056] Furthermore, the secondary water supply pipe 4 is divided into a first-year secondary water supply pipe 41 and a second-year secondary water supply pipe 42; the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 are arranged in parallel in the width direction in the precast concrete trench, and are perpendicular to the multiple first-year bottom irrigation pipes 121 and the multiple second-year bottom irrigation pipes 122 in the length direction, and the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 are both located below the multiple first-year bottom irrigation pipes 121 and the multiple second-year bottom irrigation pipes 122 in the depth direction. A secondary trench cover 43 is provided above the precast concrete trench. The secondary trench cover 43 is located above the secondary water supply pipe 41 for the first year and the secondary water supply pipe 42 for the second year, and the depth of the lower surface of the secondary trench cover 43 is -0.42m, that is, the depth of the secondary trench cover 43 is the same as that of the bottom irrigation pipe 12. The secondary trench cover 43 is located between two adjacent bottom irrigation pipes 12, that is, the secondary trench cover 43 is located between the bottom irrigation pipe 121 for the first year and the bottom irrigation pipe 122 for the second year, that is to say, the secondary trench cover 43 is not provided at the connecting point between the secondary water supply pipe 41 for the first year and the bottom irrigation pipe 121 for the first year and the connecting point between the secondary water supply pipe 42 for the second year and the bottom irrigation pipe 122 for the second year.

[0057] The first-year secondary water supply pipe 41 is connected to the plurality of first-year bottom irrigation pipes 121 in the depth direction through a tee; the second-year secondary water supply pipe 42 is connected to the plurality of second-year bottom irrigation pipes 122 in the depth direction through a tee.

[0058] At the same time, the main water supply pipe 3 is arranged parallel to the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 in the width direction, and is located below the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 in the depth direction; in the secondary water supply well 6, the main water supply pipe 3 is connected with the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 respectively through connecting pipes. Among them, in the secondary water supply well 6, a drain valve 8 and a first control valve 71 are provided on the main water supply pipe 3, and the main water supply pipe 3 is connected with the connecting pipeline through a tee; according to the front and back flow direction of irrigation water in the main water supply pipe 3, the drain valve 8 is located at the front end of the main water supply pipe 3 connected with the tee, and the first control valve 71 is located at the rear end of the main water supply pipe 3 connected with the tee; a second control valve 72 is provided at the entrance of the connecting pipeline, and the other side of the second control valve 72 divides the connecting pipeline into two pipelines again through the tee, and is respectively connected with the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42, and the two pipelines are also respectively provided with the first-year control valve 73 and the second-year control valve 74; at the same time, in the secondary water supply well 6, the first-year secondary water supply pipe 41 and the second-year secondary water supply pipe 42 are also respectively provided with drain valves 8.

[0059] In actual application, the main water supply well 5 is equipped with two sets of water pumps for water supply (not shown in the figure), one for use and one for backup, so that the water supply capacity of the main water supply well 5 is 100m 3 / h or more. When the surrounding cultivated land is larger than 1,000 mu, the water supply capacity of the main water supply well 5 is preferably 200m 3 / h or more, the depth and diameter of the main water supply well 5 are determined according to the water output design. The designed water supply capacity of each water pump is 100m 3 / h or above, and the pump head is not less than 80 meters (reaching 6 atmospheres). It is expected that 1,000 acres of land can be irrigated within 10 days.

[0060] In this embodiment, the main water supply well 5 has a depth of -1.02m and a diameter of 0.73m. The bottom of the well is padded with a 0.28m gravel filter layer 51, that is, the total depth of the main water supply well 5 including the gravel filter layer 51 is -1.3m. The gravel filter layer 51 is paved with 10-15mm gravel, and 50mm thick C20 fine stone concrete is laid around the bottom of the well wall as a stable well body foundation; the gravel filter layer 51 can play a role in antifreeze and water seepage, which is conducive to the long-term use of the main water supply well 5; the side wall at the bottom of the main water supply well 5 is connected with the main water supply pipe 3, the main water supply pipe 3 is a PE110 pipe, the depth of the main water supply pipe 3 is -0.955m (that is, the depth of the central axis position of the main water supply pipe 3 is -0.955m), the lower part is close to the gravel filter layer 51, and the upper part is -0.9m.

[0061] The main water supply pipe 3 is connected with the secondary water supply pipe 4 in the secondary water supply well 6. The secondary water supply pipe 4 is located above the main water supply pipe 3, with a depth of -0.6m (that is, the depth of the central axis position of the secondary water supply pipe 4 is -0.6m, that is to say, the depth of the central axis position of the secondary water supply pipe 41 used in the first year and the secondary water supply pipe 42 used in the second year are both -0.6m). The secondary water supply pipe 4 uses PE110 pipe and PE80 pipe in sequence from the connection point with the main water supply pipe 3 to the end, and is connected by a reducer in the middle. The maximum pressure is 6 atmospheres.

[0062] The depth of the secondary water supply well 6 is also -1.02m, the diameter is 0.73m, and the bottom of the well is padded with a 0.28m gravel filter layer 51, that is, the total depth of the secondary water supply well 6 including the gravel filter layer 51 is -1.3m. The gravel filter layer 51 is paved with 10-15mm gravel, and 50mm thick C20 fine stone concrete is laid around the bottom of the well wall as a stable well body foundation; the gravel filter layer 51 can play a role in anti-freezing and water seepage, which is conducive to the long-term use of the main water supply well 5; the main water supply pipe 3 enters the secondary water supply well 6 and is connected to the secondary water supply pipe 4 through a connecting pipeline.

[0063] The secondary water supply pipe 4 is connected to the bottom irrigation pipe 12. The bottom irrigation part 1 is -0.42m deep. The bottom irrigation pipe 12 is located in the bottom irrigation part 1 and is -0.35m deep (ie, the depth of the center axis of the bottom irrigation pipe 12 is -0.35m).

[0064] The specific working process of a trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system is as follows:

[0065] When the trough type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system is used for irrigation in the first year, firstly, the irrigation water in the main water supply well 5 is pumped into the main water supply pipe 3 by a water pump, the first control valve 71 and the second-year control valve 74 are closed, the second control valve 72 and the first-year control valve 73 are opened, and the irrigation water flows from the main water supply pipe 3 into the first-year secondary water supply pipe 41, and the irrigation water in the first-year secondary water supply pipe 41 flows into the first-year bottom irrigation pipe 121, and the irrigation water in the first-year bottom irrigation pipe 121 flows out through the water outlet 13, enters the gravel aquifer 14, and then gradually permeates upward for plant absorption;

[0066] When the trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system is used for irrigation in the second year, firstly, the irrigation water in the main water supply well 5 is pumped into the main water supply pipe 3 by a water pump, the first control valve 71 and the first-year control valve 73 are closed, the second control valve 72 and the second-year control valve 74 are opened, and the irrigation water flows from the main water supply pipe 3 into the second-year secondary water supply pipe 42, and the irrigation water in the second-year secondary water supply pipe 42 flows into the second-year bottom irrigation pipe 122, and the irrigation water in the second-year bottom irrigation pipe 122 flows out through the water outlet 13, enters the gravel aquifer 14, and then gradually permeates upward for absorption by plants;

[0067] This cycle repeats, with irrigation being carried out in rotation.

[0068] When the cultivated farmland is large, multiple sets of the trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation systems of the utility model can be used according to needs.

[0069] The utility model is a trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system that can maintain optimal irrigation, ensure that plants do not lack water when they need it most, and promptly provide plants with the water they need for growth, thereby increasing food production.

[0070] The trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system of the utility model can also be combined with existing intelligent technologies such as using a PLC or DCS control system to control the control valve 7 to achieve data management intelligent irrigation.

[0071] The utility model discloses a trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system, by locating the bottom irrigation part 1 at -0.42m below the ground surface. The planting soil on the ground surface can protect the water from evaporation, thereby effectively solving the problem of surface evaporation of irrigation water. Meanwhile, the bottom irrigation part 1 adopts a waterproof layer 111 to prepare a water storage tank 11, thereby effectively solving the problem of surface evaporation and underground seepage of irrigation water. Based on this, the utility model discloses a trough-type anti-leakage, water-storage, water-saving, permanent farmland bottom irrigation system. Compared with other irrigation technologies, the irrigation water is basically not wasted, the water retention time is effectively prolonged, and the amount of irrigation water and the number of times are reduced.

[0072] The trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system of the utility model has the advantages of simple overall operation, high irrigation efficiency, and long-term use, and is suitable for wide promotion.

[0073] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A trough-type anti-leakage, water storage, water-saving, permanent farmland bottom irrigation system, characterized in that: The trough-type anti-leakage, water-storing, water-saving, permanent farmland bottom irrigation system is an underground irrigation system, including a water supply pipeline and a plurality of bottom irrigation parts connected to the water supply pipeline; The bottom irrigation part is buried under the planting trough and is parallel to the planting trough in the length direction; The bottom irrigation part includes a water storage tank and a bottom irrigation pipe; A bottom irrigation pipe is provided inside the water storage tank and is arranged parallel to the water storage tank in the length direction; The bottom irrigation pipe is connected with the water supply pipeline, and water outlet holes are arranged at intervals on the bottom irrigation pipe.

2. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 1, characterized in that: The opening direction of the water outlet is obliquely downward.

3. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 1 or 2, characterized in that: The water storage tank is a rectangular waterproof tank body consisting of a bottom and two side walls with an opening facing upward.

4. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 3, characterized in that: The two side walls of the water storage tank are located below the two sides of the planting tank and are parallel to the planting tank in the length direction.

5. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 1, 2 or 4, characterized in that: A crushed stone aquifer is provided around the bottom irrigation pipe and inside the water storage tank.

6. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 5, characterized in that: The gravel-rubble aquifer is divided into two layers, the lower and upper layers, with the bottom irrigation pipe wrapped inside the lower layer of the gravel-rubble aquifer; The upper gravel aquifer is located above the lower gravel aquifer.

7. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 1, 2, 4 or 6, characterized in that: The water supply pipeline includes the main water supply well, the main water supply pipe and the secondary water supply pipe; both the main water supply pipe and the secondary water supply pipe are buried underground; The side wall of the main water supply well close to the bottom is connected to the main water supply pipe, the main water supply pipe is connected to the secondary water supply pipe, and the secondary water supply pipe is simultaneously connected to the bottom irrigation pipes in the multiple bottom irrigation parts.

8. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 7, characterized in that: A control valve is provided between the main water supply pipe and the secondary water supply pipe.

9. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 7, characterized in that: Bottom irrigation pipes are divided into bottom irrigation pipes for the first year and bottom irrigation pipes for the second year. The bottom irrigation pipes for the first year and the bottom irrigation pipes for the second year are arranged alternately.

10. A trough type anti-leakage, water storage, water saving, permanent farmland bottom irrigation system according to claim 9, characterized in that: The secondary water supply pipe is divided into the secondary water supply pipe for the first year and the secondary water supply pipe for the second year; the main water supply pipe is connected with the secondary water supply pipe for the first year and the secondary water supply pipe for the second year respectively; The secondary water supply pipe for the first year and the secondary water supply pipe for the second year are both located below the plurality of bottom irrigation pipes for the first year and the plurality of bottom irrigation pipes for the second year in the depth direction; The secondary water supply pipe for the first year is connected with a plurality of bottom irrigation pipes for the first year in the depth direction; The secondary water supply pipe for the second year is connected with a plurality of bottom irrigation pipes for the second year in the depth direction.

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