A partitioned multi-formula water and fertilizer integrated drip irrigation system for heterogeneous crops

Abstract

The utility model relates to the technical field of injecting fertilizer into root part, disclose a kind of zoned multi-formula water and fertilizer integrated drip irrigation system for heterogeneous crops, including drip irrigation pipe network and adjustable fertilizer applicator being set on each drip irrigation branch pipe;Adjustable fertilizer applicator is the tubular container of adjustable volume by adjusting length, and replace a section of pipeline in drip irrigation branch pipe, and the inlet and outlet of tubular container two ends are communicated with drip irrigation branch pipe by multistage reducing joint respectively.By adopting tubular container consistent with the trend of drip irrigation branch pipe and cooperating multistage reducing structure, the head loss caused by large diameter change is reduced as far as possible, so that when directly connecting fertilizer tank to drip irrigation branch pipe, irrigation is not affected;And two ends do not need special joint on drip irrigation branch pipe, and can be connected at any position on drip irrigation branch pipe;The volume of tubular container itself, the type and quantity of fertilizer filled inside can be freely adjusted according to the demand of the plot irrigated by drip irrigation branch pipe.Combination of the above points can accurately meet the fertilization needs of various different crops.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer injection into the root system, and in particular to a zoned multi-formula fertigation drip irrigation system for heterogeneous crops. Background Technology

[0002] In arid or extremely arid regions, water resource constraints are one of the main factors hindering the development of agriculture and forestry. Drip irrigation, a water-saving irrigation method, is an important means to solve this problem. As a result, the integrated water and fertilizer technology has been developed, which has greatly promoted the development of agriculture and forestry.

[0003] In integrated water and fertilizer management, the drip irrigation network typically includes a main drip irrigation pipe connected to the water source, multiple branch drip irrigation pipes extending from the main pipe, multiple capillary drip irrigation pipes extending from the branch pipes, and drippers installed on the capillary drip irrigation pipes. During integrated water and fertilizer management, water-soluble fertilizer is generally injected directly into the main drip irrigation pipe, allowing the fertilizer and water to flow along the drip irrigation network to a large area near the crop roots. A single well often irrigates 1000-2000 mu (approximately 67 hectares) of land, and a single irrigation rotation group also manages 8-10 branch pipes simultaneously.

[0004] However, in actual production, many planting areas often grow a variety of trees or crops (i.e., "heterogeneous crops"), especially in some technology demonstration or research bases. The water and fertilizer requirements of each type of tree or crop are different, making precise integrated water and fertilizer management very difficult. If the conventional method of adding fertilizer along the drip irrigation trunk line is adopted, then all plots will receive the same amount of fertilizer, while the types and quantities of fertilizer required by each plot are not the same, resulting in a mismatch.

[0005] The bypass fertilizer applicator is portable and theoretically allows for fertilization on branch pipes. However, it requires a special interface and necessitates multiple adjustments to three valves during use, making it impossible to leave unattended. This limits its current application to either drip irrigation trunk line fertilization or supplemental fertilization.

[0006] If fertilizer tanks are installed directly in the branch pipes, the pressure head loss caused by two consecutive sudden contractions and expansions will have a serious adverse effect on irrigation itself. Utility Model Content

[0007] This invention provides a zoned, multi-formula, integrated water and fertilizer drip irrigation system for heterogeneous crops.

[0008] The technical problem to be solved is that in the current drip irrigation system that integrates water and fertilizer, crops receive the same type and amount of fertilizer, which cannot meet the needs of different crops.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a zoned multi-formula water and fertilizer integrated drip irrigation system for heterogeneous crops, comprising a drip irrigation network, wherein the drip irrigation network comprises a drip irrigation trunk pipe connected to a water source at its inlet, multiple drip irrigation branch pipes extending from the drip irrigation trunk pipe, multiple drip irrigation capillary pipes extending from the drip irrigation branch pipes, and drippers installed on the drip irrigation capillary pipes, and also includes adjustable fertilizer applicators installed on each drip irrigation branch pipe; The adjustable fertilizer applicator is a tubular container whose volume can be adjusted by adjusting its length, and it replaces a section of pipe in the drip irrigation branch pipe. The inlet and outlet at both ends of the tubular container are connected to the drip irrigation branch pipe through multi-stage reducing joints. The adjustable fertilizer applicator has a filling port on the side for filling fertilizer, and a detachable connector in the middle for disconnecting the adjustable fertilizer applicator to adjust the internal structure. The adjustable fertilizer applicator is equipped with a fertilizer mesh bag to prevent the water-soluble fertilizer inside from being washed away before it dissolves. The opening of the fertilizer mesh bag is tied to the filling port. The volume of the adjustable fertilizer applicator, the type and quantity of fertilizer inside it are matched with the fertilization needs of the plot irrigated by the drip irrigation branch.

[0010] Furthermore, it is used for irrigation and fertilization of cultivation bases for technical demonstration or scientific research purposes, wherein various different trees and / or crops are cultivated in the cultivation bases.

[0011] Furthermore, each adjustable fertilizer applicator includes a filling tee and two adjustable cavities that are detachably connected to both ends of the main pipe of the filling tee. The adjustable cavities are rigid pipes. The volume of the two adjustable cavities matches the fertilization needs of the plot irrigated by the drip irrigation branch pipe. The volume of the adjustable fertilizer applicator can be adjusted by using adjustable cavities of different lengths. The branch pipe of the filling tee is equipped with an internal thread plug, and the branch pipe of the filling tee and the internal thread plug together form the filling port.

[0012] Furthermore, an anti-loss rod is inserted into the branch pipe of the filling tee to prevent the fertilizer mesh bag from being washed away. The lower end of the anti-loss rod is inserted into the fertilizer mesh bag and the upper end is located in the branch pipe of the filling tee. The opening of the fertilizer mesh bag is tied to the anti-loss rod and tightened.

[0013] Furthermore, the end of the adjustable cavity furthest from the filling tee is detachably connected to the larger end of the second-stage reducing connector, the second-stage reducing connector is connected to the larger end of the first-stage reducing connector, and the smaller end of the first-stage reducing connector is connected to the end of the drip irrigation branch pipe.

[0014] Furthermore, during the socket connection, the adjustable cavity is inserted into the two-stage reducing tee, the first-stage reducing tee is inserted into the second-stage reducing tee, and the drip irrigation branch pipe is inserted into the first-stage reducing tee.

[0015] Compared with existing technologies, the present invention provides a zoned multi-formula fertigation drip irrigation system for heterogeneous crops, which has the following advantages: In this invention, by employing a tubular container aligned with the drip irrigation branch pipe and incorporating a multi-stage variable diameter structure, head loss caused by significant diameter changes is minimized. This ensures that directly connecting the fertilizer container to the drip irrigation branch pipe does not affect irrigation. Furthermore, no special connectors are required at either end of the drip irrigation branch pipe; it can be connected at any point on the pipe (simply cut the branch pipe and insert the cut sections into the inlet and outlet of the adjustable fertilizer applicator). Simultaneously, the tubular container itself has an adjustable volume, and the type and quantity of fertilizer inside can be freely adjusted according to the needs of the irrigated plot. The combination of these features allows for precise fulfillment of the fertilization needs of various crops. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to the present invention. For ease of reading, the drip irrigation capillaries and drippers are omitted in the figure. Figure 2 This is a schematic diagram of the adjustable fertilizer applicator. In the diagram, 1-drip irrigation main pipe, 2-drip irrigation branch pipe, 3-adjustable fertilizer applicator, 31-first-stage reducer, 32-second-stage reducer, 33-adjustable cavity, 34-filling tee, 35-fertilizer mesh bag, 36-anti-loss rod. Detailed Implementation

[0017] Note that this invention is generally used for irrigation and fertilization in cultivation bases for technical demonstration or research purposes, where a variety of different trees and / or crops are cultivated. Using this invention in areas with only one type of crop would be counterproductive.

[0018] Taking the cultivation base of the Bayingolin Desertification Control Station in Yuli County as an example, such as Figure 1-2 As shown, a zoned multi-formula fertigation drip irrigation system for heterogeneous crops includes a drip irrigation network. The drip irrigation network includes a drip irrigation trunk pipe 1 with an inlet connected to a water source, multiple drip irrigation branch pipes 2 extending from the drip irrigation trunk pipe 1, multiple drip irrigation capillary pipes extending from the drip irrigation branch pipes 2, and drippers installed on the drip irrigation capillary pipes. It also includes adjustable fertilizer applicators 3 installed on each drip irrigation branch pipe 2. The adjustable fertilizer applicator 3 is a tubular container (round tube) whose volume can be adjusted by adjusting its length, and it replaces a section of pipe in the drip irrigation branch pipe 2; The tubular container used here to replace a section of drip irrigation branch pipe 2 is to ensure that the internal fluid flow is consistent with that of drip irrigation branch pipe 2, avoiding pressure head loss due to bends. In actual operation, it is not necessary to cut off a section of drip irrigation branch pipe 2; simply ensuring that its direction is consistent with that of drip irrigation branch pipe 2 is sufficient. Adjusting the volume is to accommodate the fertilizer application needs of different plots. However, adjusting the volume must not affect the fluid flow; therefore, this is achieved by adjusting the length.

[0019] The inlet and outlet at both ends of the tubular container are connected to the drip irrigation branch pipe 2 via multi-stage reducing joints. The diameter difference between the drip irrigation branch pipe 2 and the thickest part of the adjustable fertilizer applicator 3 is significant. If a single reducing joint is used to reduce the diameter, it will result in sudden contraction and expansion, which will not only cause a large pressure head loss but also easily create a dead zone (a region where the fluid flow inside the container is almost still, and fertilizer will be wasted). Therefore, the diameter should be gradually reduced.

[0020] The adjustable fertilizer applicator 3 has a filling port on its side for filling fertilizer, and a detachable connector in the middle for disconnecting the adjustable fertilizer applicator 3 to adjust the internal structure. The adjustable fertilizer applicator 3 is equipped with a fertilizer mesh bag 35 to prevent the water-soluble fertilizer inside from being washed away before it dissolves. The opening of the fertilizer mesh bag 35 is tied to the filling port. The volume of the adjustable fertilizer applicator 3, the type and quantity of fertilizer inside it are matched with the fertilization needs of the plot irrigated by the drip irrigation branch pipe 2.

[0021] It is not possible to prevent water-soluble fertilizer from being washed away before it dissolves by installing a filter screen at the outlet of the adjustable fertilizer applicator 3, because this would cause the fertilizer particles to be compacted in front of the filter screen and the water flow to be interrupted.

[0022] The drip irrigation branch pipe 2 is responsible for the fertilization needs of the irrigated plot, including the type, quantity, and proportion of fertilizer, which are determined according to the fertilization plan (a certain amount of a certain type of fertilizer needs to be applied to a certain crop per unit area each time).

[0023] Each adjustable fertilizer applicator 3 includes a filling tee 34 and two adjustable cavities 33 that are detachably connected to both ends of the main pipe of the filling tee 34 (detachable joints). The adjustable cavities 33 are rigid pipes. The volume of the two adjustable cavities 33 is matched with the fertilization needs of the plot irrigated by the drip irrigation branch pipe 2. The volume of the adjustable fertilizer applicator 3 can be adjusted by replacing the adjustable cavities 33 of different lengths. The branch pipe of the filling tee 34 is equipped with an internal thread plug, and the branch pipe of the filling tee 34 and the internal thread plug together form the filling port.

[0024] The reason for setting up a filling port here, instead of directly disassembling the adjustable fertilizer applicator 3 and filling it with fertilizer, is that crops will be fertilized more than once, and the adjustable fertilizer applicator 3 does not need to adjust the adjustable cavity 33 every time.

[0025] An anti-loss rod 36 is inserted into the branch pipe of the filling tee 34 to prevent the fertilizer net bag 35 from being washed away. The lower end of the anti-loss rod 36 is inserted into the fertilizer net bag 35 and the upper end is located in the branch pipe of the filling tee 34. The opening of the fertilizer net bag 35 is tied to the anti-loss rod 36 and tightened.

[0026] The end of the adjustable cavity 33 away from the filling tee 34 is detachably connected to the larger end of the second-stage reducing connector 32. The second-stage reducing connector 32 is connected to the larger end of the first-stage reducing connector 31. The smaller end of the first-stage reducing connector 31 is connected to the end of the drip irrigation branch pipe 2.

[0027] That is, a two-stage reducing joint is used in this embodiment.

[0028] When making a socket connection, the adjustable cavity 33 is inserted into the filling tee 34 and the second-stage reducing connector 32 to adapt to the structure of common socket pipe joints.

[0029] The first-stage reducing connector 31 is inserted into the second-stage reducing connector 32, and the drip irrigation branch pipe 2 is inserted into the first-stage reducing connector 31. This makes the connector part also have a reducing effect, which is equivalent to having two additional reducing connectors.

[0030] This utility model discloses a zoned multi-formula fertigation drip irrigation system for heterogeneous crops, the method of use of which includes the following steps: Step 1: Develop a fertilization plan based on the area of ​​different plots and the types of crops. Determine the type and quantity of fertilizer to be filled into the adjustable fertilizer applicator 3 for each plot based on the fertilization plan. Determine the length of the adjustable cavity 33 of each adjustable fertilizer applicator 3 based on the quantity of fertilizer to be filled. Step 2: Assemble the adjustable fertilizer applicator 3 and fill it with fertilizer. Then insert the anti-leakage rod 36 and seal the filling port. Note that when filling the fertilizer, do not compact it or fill it too full, so as not to affect the water flow. The gaps on the cross-section of the adjustable cavity 33 should ensure that water can flow through. As the fertilizer dissolves, the gaps will quickly expand, and there will be no pressure head loss due to the throttling effect.

[0031] Step 3: Start drip irrigation.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A zoned multi-formula fertigation drip irrigation system for heterogeneous crops, comprising a drip irrigation network, the drip irrigation network including a drip irrigation main pipe (1) with its inlet connected to a water source, multiple drip irrigation branch pipes (2) extending from the drip irrigation main pipe (1), multiple drip irrigation capillary pipes extending from the drip irrigation branch pipes (2), and drippers installed on the drip irrigation capillary pipes, characterized in that: It also includes adjustable fertilizer applicators (3) installed on each drip irrigation branch pipe (2); The adjustable fertilizer applicator (3) is a tubular container whose volume can be adjusted by adjusting its length, and it replaces a section of the pipe in the drip irrigation branch pipe (2). The inlet and outlet of the tubular container are connected to the drip irrigation branch pipe (2) through multi-stage reducing joints. The adjustable fertilizer applicator (3) has a filling port for filling fertilizer on the side and a detachable joint in the middle for disconnecting the adjustable fertilizer applicator (3) to adjust the internal structure. The adjustable fertilizer applicator (3) is filled with a fertilizer mesh bag (35) to prevent the water-soluble fertilizer inside from being washed away before it dissolves. The opening of the fertilizer mesh bag (35) is tied to the filling opening. The volume of the adjustable fertilizer applicator (3), the type and quantity of fertilizer inside it are matched with the fertilization needs of the plot irrigated by the drip irrigation branch pipe (2).

2. The zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to claim 1, characterized in that: Irrigation and fertilization for cultivation bases used for technical demonstration or scientific research, wherein various different trees and / or crops are cultivated.

3. The zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to claim 1, characterized in that: Each adjustable fertilizer applicator (3) includes a filling tee (34) and two adjustable cavities (33) that are detachably connected to both ends of the main pipe of the filling tee (34). The adjustable cavities (33) are rigid pipes. The volume of the two adjustable cavities (33) matches the fertilization needs of the plot irrigated by the drip irrigation branch pipe (2). The volume of the adjustable fertilizer applicator (3) can be adjusted by changing the adjustable cavities (33) of different lengths. The branch pipe of the filling tee (34) is equipped with an internal thread plug, and the branch pipe of the filling tee (34) together with the internal thread plug forms the filling port.

4. A zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to claim 3, characterized in that: An anti-loss rod (36) for preventing the fertilizer net bag (35) from being washed away is inserted into the branch pipe of the filling tee (34). The lower end of the anti-loss rod (36) is inserted into the fertilizer net bag (35) and the upper end is located in the branch pipe of the filling tee (34). The opening of the fertilizer net bag (35) is tied to the anti-loss rod (36) and tightened.

5. A zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to claim 3, characterized in that: The end of the adjustable cavity (33) away from the filling tee (34) is detachably connected to the larger end of the second-stage reducing connector (32). The second-stage reducing connector (32) is connected to the larger end of the first-stage reducing connector (31). The smaller end of the first-stage reducing connector (31) is connected to the end of the drip irrigation branch pipe (2).

6. A zoned multi-formula fertigation drip irrigation system for heterogeneous crops according to claim 5, characterized in that: When making the socket connection, the adjustable cavity (33) is inserted into the filling tee (34) and the second-stage reducing connector (32), the first-stage reducing connector (31) is inserted into the second-stage reducing connector (32), and the drip irrigation branch pipe (2) is inserted into the first-stage reducing connector (31).

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