Underground irrigation test system

Abstract

The utility model provides an underground irrigation test system, and relates to the field of detection instruments. The subsurface irrigation test system comprises water supply equipment, drip irrigation equipment, a control cabinet and a test box; the water supply equipment comprises a water storage tank body, a water inlet pipeline and a water outlet pipeline. The drip irrigation equipment comprises a water guide pipe, a first flow meter, a first turbulator, an irrigation capillary, a drip irrigation head and permeable cotton; the first flow meter is mounted on the water guide pipe; the water outlet pipeline is communicated with the first flow meter; the first turbulator is installed on the water guide pipe, the irrigation capillary pipe is connected with the first turbulator, the drip irrigation head is arranged at the end of the irrigation capillary pipe, and water permeable holes are formed in the pipe wall of the irrigation capillary pipe; the water-permeable cotton is filled in the water filling capillary tube; the irrigation capillary and the drip irrigation head are inserted into the test box; the control cabinet is simultaneously in communication connection with the water supply equipment and the drip irrigation equipment. According to the system, water resource waste caused by soil moisture supersaturation can be avoided, accurate irrigation can be achieved, the accuracy of a test result is improved, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of detection instruments, and more specifically, to an underground irrigation test system. Background Art

[0002] Subsurface drip irrigation technology is a new type of water-saving micro-irrigation technology that uses buried emitters in the soil layer to directly apply water or a water-fertilizer mixture to the root zone of target crops by means of capillary force or gravity. This technology has the advantages of water saving and fertilizer saving. In practical applications, it is found that it has unique advantages compared with surface drip irrigation in reducing weeds and controlling pests and diseases. In recent years, in the face of water shortage in arid and semi-arid regions and the increasingly deteriorating agricultural water environment, this new type of irrigation technology has become a research hotspot for many scholars and corresponding progress has been made. It is of great significance to study the unsaturated soil water flow movement, solute transport, and micro-irrigation equipment suitable for subsurface drip irrigation through simulation experiments. At present, the subsurface drip irrigation test has always used the empirical trial-and-error method to find the agricultural technical measures for the optimal irrigation amount of specific soils and specific crops. In the actual irrigation process, when the irrigation amount is too large, small-scale water saturation areas appear in the soil, causing soil water saturation flow and preferential flow generated under its background, resulting in waste of agricultural water. Since modern technology has provided corresponding testing, monitoring, and information feedback methods, through modern monitoring means, the soil moisture content in the irrigation area during the irrigation process is monitored, analyzed, and fed back to achieve precise irrigation. However, for subsurface drip irrigation technology, there is no relatively suitable systematic and automated irrigation device. Therefore, it is necessary to design an underground drip irrigation test system that can be used for experimental research and also for field practical applications. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an underground irrigation test system that can avoid water resource waste caused by soil water oversaturation, achieve precise irrigation, improve the accuracy of test results, and reduce test costs.

[0004] The embodiments of the utility model are implemented as follows:

[0005] In a first aspect, the utility model provides an underground irrigation test system, including:

[0006] Water supply equipment, drip irrigation equipment, control cabinet and test box; the water supply equipment includes a water storage tank body, a water inlet pipeline and a water outlet pipeline, and both the water inlet pipeline and the water outlet pipeline are connected to the water storage tank body; the drip irrigation equipment includes a water guiding pipe, a first flowmeter, a first turbulator, an irrigation capillary, a drip irrigation head and a water permeable cotton; the first flowmeter is installed on the water guiding pipe, and the water outlet pipeline is connected to the first flowmeter; the first turbulator is installed at the end of the water guiding pipe away from the first flowmeter, the irrigation capillary is connected to the first turbulator, the drip irrigation head is arranged at the end of the irrigation capillary, and water permeable holes are provided on the pipe wall of the irrigation capillary; the water permeable cotton is filled in the irrigation capillary; the irrigation capillary and the drip irrigation head are inserted into the test box, and the test box is used for storing the soil to be tested; the control cabinet is communicatively connected to both the water supply equipment and the drip irrigation equipment.

[0007] In an alternative embodiment, the water supply equipment further includes a first pressure gauge, a second pressure gauge, a first butterfly valve, a filter and a one-way flow control valve, and the first pressure gauge, the first butterfly valve, the filter and the one-way flow control valve are sequentially installed on the water inlet pipeline; the second pressure gauge is installed on the water storage tank body; both the first pressure gauge and the second pressure gauge are communicatively connected to the control cabinet.

[0008] In an alternative embodiment, the water supply equipment further includes a third pressure gauge, a second butterfly valve, a three-way joint, a first branch butterfly valve, a first branch pressure gauge, a second branch butterfly valve, a second branch pressure gauge, a safety valve, an electromagnetic flow valve, a pipe reducer joint, a second flowmeter and a second turbulator; the water outlet pipeline includes a first pipe section, a first branch, a second branch and a second pipe section, one end of the first pipe section is connected to the water storage tank body, the other end of the first pipe section is respectively connected to the first branch and the second branch through the three-way joint, the other ends of the first branch and the second branch are both connected to one end of the second pipe section, and the other end of the second pipe section is connected to the first flowmeter;

[0009] The third pressure gauge and the second butterfly valve are both installed on the first pipe section; the first branch butterfly valve and the first branch pressure gauge are both installed on the first branch, and the second branch butterfly valve and the second branch pressure gauge are both installed on the second branch; the safety valve, the electromagnetic flow valve, the pipe reducer joint, the second flowmeter and the second turbulator are all sequentially installed on the second pipe section, and the second turbulator is arranged close to the first flowmeter.

[0010] In an alternative embodiment, the water supply equipment further includes a vacuum suppressor and a drain valve, the vacuum suppressor is installed on the top of the water storage tank body, and the drain valve is installed on the bottom of the water storage tank body; the vacuum suppressor is communicatively connected to the control cabinet.

[0011] In an alternative embodiment, the water supply device further includes a flow stabilization compensator, which is installed on one side of the water storage tank body.

[0012] In an alternative embodiment, the water supply device further includes a height-adjustable support, which is installed at the bottom of the water storage tank body and is used to support the water storage tank body and can adjust the height of the water storage tank body.

[0013] In an alternative embodiment, the control cabinet includes a computer, a bracket, an alarm, a negative pressure dial, and a soil moisture tensiometer. The bracket is installed at the bottom of the computer; both the alarm and the negative pressure dial are communicatively connected to the computer, and the soil moisture tensiometer is communicatively connected to the negative pressure dial. The soil moisture tensiometer is used to be inserted into the test soil.

[0014] In an alternative embodiment, the test chamber includes a frame and a light-transmitting plate. The frame is provided with a plurality of hollow areas, and the light-transmitting plate is installed on the frame and closes the hollow areas.

[0015] In an alternative embodiment, the frame is made of stainless steel, and the light-transmitting plate is made of glass.

[0016] In an alternative embodiment, the inner diameter of the irrigation capillary is set to 3-5 mm, or the length of the irrigation capillary is set to not less than 250 mm.

[0017] The beneficial effects of the embodiments of the present utility model are as follows:

[0018] In summary, for the underground irrigation test system provided in this embodiment, during operation, first, the water inlet pipeline is connected to the municipal water supply pipeline, and a certain amount of water is stored in the water storage tank body. Then, the drip capillary and the drip irrigation head are inserted into the test soil in the test chamber together. The drip irrigation head is located below and is completely buried in the test soil. The insertion depth of the drip capillary can be set as required and can be adjusted according to needs, with flexible use. When drip irrigation starts, the water outlet pipeline is opened, and the water in the water storage tank body can enter the water guide pipe from the water outlet pipeline. When passing through the water guide pipe, the flow rate is obtained by the first flow meter, and the amount of water entering the test soil can be accurately measured. During the drip irrigation process, the soil moisture tension in the test soil can be obtained in real time by the control cabinet. The water content in the test soil can be judged through the soil moisture tension, so as to realize precise control of the drip irrigation process, reduce the waste of water resources, and reduce the test cost. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the underground irrigation test system for the embodiments of the present utility model;

[0021] Figure 2 Partial structural schematic diagram of the drip irrigation device for the embodiments of the present utility model.

[0022] Icon:

[0023] 100 - Water supply equipment; 110 - Water storage tank body; 120 - Inlet pipeline; 130 - Outlet pipeline; 131 - First pipe section; 132 - First branch; 133 - Second branch; 134 - Second pipe section; 140 - First pressure gauge; 150 - Second pressure gauge; 160 - First butterfly valve; 170 - Filter; 180 - Unidirectional flow control valve; 190 - Third pressure gauge; 201 - Second butterfly valve; 202 - Three - way joint; 203 - First branch butterfly valve; 204 - First branch pressure gauge; 205 - Second branch butterfly valve; 206 - Second branch pressure gauge; 207 - Safety valve; 208 - Electromagnetic flow valve; 209 - Pipe diameter reducer; 210 - Second flowmeter; 211 - Second turbulator; 212 - Vacuum suppressor; 213 - Drain valve; 214 - Flow - stabilizing compensator; 215 - Support; 300 - Drip irrigation device; 310 - Water guide pipe; 320 - First flowmeter; 330 - First turbulator; 340 - Irrigation capillary; 341 - Water - permeable hole; 350 - Drip irrigation head; 360 - Water - permeable cotton; 500 - Control cabinet; 510 - Computer; 520 - Bracket; 530 - Alarm; 540 - Negative pressure dial; 550 - Soil moisture tensiometer; 700 - Test box; 710 - Frame; 720 - Transparent plate. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] The underground irrigation test system provided in this embodiment can achieve automated drip irrigation tests, with low labor intensity and high efficiency. Moreover, it can monitor the soil drip irrigation process in real time, achieve precise drip irrigation control, and reduce water resource waste.

[0031] Please refer to Figure 1 - Figure 2, in this embodiment, the underground irrigation test system includes a water supply device 100, a drip irrigation device 300, a control cabinet 500, and a test box 700; the water supply device 100 includes a water storage tank body 110, a water inlet pipeline 120, and a water outlet pipeline 130, and both the water inlet pipeline 120 and the water outlet pipeline 130 are connected to the water storage tank body 110; the drip irrigation device 300 includes a water guiding pipe 310, a first flowmeter 320, a first turbulator 330, an irrigation capillary 340, a drip irrigation head 350, and a permeable cotton 360; the first flowmeter 320 is installed on the water guiding pipe 310, and the water outlet pipeline 130 is connected to the first flowmeter 320; the first turbulator 330 is installed at the end of the water guiding pipe 310 away from the first flowmeter 320, the irrigation capillary 340 is connected to the first turbulator 330, the drip irrigation head 350 is arranged at the end of the irrigation capillary 340, and a permeable hole 341 is provided on the wall of the irrigation capillary 340; the permeable cotton 360 is filled in the irrigation capillary 340; the irrigation capillary 340 and the drip irrigation head 350 are inserted into the test box 700, and the test box 700 is used to store the soil to be tested; the control cabinet 500 is communicatively connected to both the water supply device 100 and the drip irrigation device 300.

[0032] Continuing from the above, the working mode of the underground irrigation test system provided in this embodiment is as follows:

[0033] Before the test, the water inlet pipeline 120 can be first connected to the municipal water supply pipe, and a certain amount of water can be stored in the water storage tank body 110 by using the municipal water supply pipe. Then, the drip irrigation capillary and the drip irrigation head 350 are inserted into the soil to be tested in the test box 700 together. The drip irrigation head 350 is located below and completely buried in the soil to be tested. The insertion depth of the drip irrigation capillary can be set as required and can be adjusted according to needs, with flexible use. When drip irrigation starts, the water outlet pipeline 130 is opened, and the water in the water storage tank body 110 can enter the water guiding pipe 310 from the water outlet pipeline 130. The flow rate is obtained by the first flowmeter 320 when passing through the water guiding pipe 310, and the amount of water entering the soil to be tested can be accurately measured. During the drip irrigation process, the soil water tension in the soil to be tested can be obtained in real time by the control cabinet 500. The water content in the soil to be tested can be judged through the soil water tension, so as to realize precise control of the drip irrigation process, reduce the waste of water resources, and reduce the test cost.

[0034] The following embodiments will illustrate the details of the underground irrigation test system provided in this application by way of examples.

[0035] Please refer to Figure 1 - Figure 2, in this embodiment, optionally, the underground irrigation test system includes a water supply device 100, a drip irrigation device 300, a control cabinet 500, and a test box 700. The water supply device 100 cooperates with the drip irrigation device 300, and the drip irrigation device 300 cooperates with the test box 700. A quantitative amount of soil to be measured can be stored in the test box 700. The control cabinet 500 is communicatively connected to both the water supply device 100 and the drip irrigation device 300, and can realize automatic regulation of water replenishment, water discharge, drip irrigation, etc. Moreover, the control cabinet 500 can monitor the drip irrigation condition of the soil in the test box 700 to achieve precise control of drip irrigation.

[0036] , in this embodiment, optionally, the water supply device 100 includes a water storage tank body 110, a water inlet pipeline 120, a water outlet pipeline 130, a first pressure gauge 140, a second pressure gauge 150, a first butterfly valve 160, a filter 170, a one-way flow control valve 180, a third pressure gauge 190, a second butterfly valve 201, a three-way joint 202, a first branch butterfly valve 203, a first branch pressure gauge 204, a second branch butterfly valve 205, a second branch pressure gauge 206, a safety valve 207, an electromagnetic flow valve 208, a water pipe reducer 209, a second flowmeter 210, a second turbulator 211, a vacuum suppressor 212, a drain valve 213, a flow stabilization compensator 214, and a support 215.

[0037] Among them, the first pressure gauge 140, the first butterfly valve 160, the filter 170, and the one-way flow control valve 180 are sequentially installed on the water inlet pipe 120. The first butterfly valve 160 is used to control the on / off and flow rate of the water inlet pipe 120. The filter 170 can filter the liquid entering the water storage tank body 110 from the water inlet pipe 120. The second pressure gauge 150 is installed on the water storage tank body 110 and can be located at the top of the water storage tank body 110. The water outlet pipe 130 includes a first pipe section 131, a first branch 132, a second branch 133, and a second pipe section 134. One end of the first pipe section 131 communicates with the water storage tank body 110, and the other end of the first pipe section 131 is respectively communicated with the first branch 132 and the second branch 133 through a tee joint 202. The other ends of the first branch 132 and the second branch 133 are both communicated with one end of the second pipe section 134, and the other end of the second pipe section 134 is connected to the first flowmeter 320. The third pressure gauge 190 and the second butterfly valve 201 are both installed on the first pipe section 131. The first branch butterfly valve 203 and the first branch pressure gauge 204 are both installed on the first branch 132, and the second branch butterfly valve 205 and the second branch pressure gauge 206 are both installed on the second branch 133. The safety valve 207, the electromagnetic flow valve 208, the pipe reducer joint 209, the second flowmeter 210, and the second turbulator 211 are sequentially installed on the second pipe section 134, and the second turbulator 211 is arranged close to the first flowmeter 320. The vacuum suppressor 212 is installed on the top of the water storage tank body 110, and the drain valve 213 is installed on the bottom of the water storage tank body 110. The flow stabilization compensator 214 is installed on one side of the water storage tank body 110. Due to the setting of the first branch 132 and the second branch 133, during the drip irrigation process, if one of the branches fails, the branch butterfly valve on the corresponding branch can be closed, so as to ensure the normal progress of the drip irrigation operation. Moreover, when the faulty branch is being repaired, the drip irrigation can also continue, shortening the vacuum period and improving the test efficiency.

[0038] It should be understood that the first pressure gauge 140, the second pressure gauge 150, the third pressure gauge 190, the first butterfly valve 160, the one-way flow control valve 180, the first branch butterfly valve 203, the second branch butterfly valve 205, the first branch pressure gauge 204, the second branch pressure gauge 206, the safety valve 207, the electromagnetic flow valve 208, the second flowmeter 210, the drain valve 213, and the vacuum suppressor 212, etc. can all be communicatively connected to the control cabinet 500 to achieve intelligent control. That is to say, the first butterfly valve 160, the one-way flow control valve 180, the first branch butterfly valve 203, the second branch butterfly valve 205, etc. can all be intelligent electric control valves.

[0039] In addition, the water storage tank body 110 can be set as a cylinder, and the support 215 can be set as a height-adjustable structure. The water storage tank body 110 is placed horizontally, that is, the axis of the water storage tank body 110 extends horizontally, with a low center of gravity and is not easy to topple. The top surface of the support 215 can be set as an arc surface, which can closely fit with the cylindrical surface of the water storage tank body 110 to improve the stability of the support. At the same time, two pins can be set on the top surface of the support 215, and the water storage tank body 110 is located between the two pins to improve the stability of the water storage tank body 110.

[0040] It should be noted that the height adjustment of the support 215 can be realized by a height-adjustable leg provided at the bottom of the support 215. The height-adjustable leg can use a jack to realize height adjustment. Combining with the existing technology, in order to avoid repeated narration, it will not be described in detail in this embodiment.

[0041] In addition, by setting the sewage valve 213, the residual water in the water storage tank body 110 can be discharged. The number of the sewage valves 213 can be multiple, and the positions where the multiple sewage valves 213 are distributed are different, so that the sewage discharge is more thorough.

[0042] In this embodiment, optionally, the control cabinet 500 includes a computer 510, a bracket 520, an alarm 530, a negative pressure dial 540, and a soil moisture tensiometer 550. The bracket 520 is installed at the bottom of the computer 510. The bracket 520 can be set as a stainless steel bracket 520, with high structural strength and long service life. Both the alarm 530 and the negative pressure dial 540 are communicatively connected to the computer 510. The soil moisture tensiometer 550 is communicatively connected to the negative pressure dial 540. The soil moisture tensiometer 550 is used to be inserted into the test soil. And the distance between the soil moisture tensiometer 550 and the water guide pipe 310 is about 10 cm to ensure the accuracy of monitoring. During the drip irrigation process, the soil moisture situation can be obtained in real time through the soil moisture tensiometer 550, so as to realize precise control. The information obtained by the soil moisture tensiometer 550 is transmitted to the computer 510. After being processed by the computer 510, the obtained parameter information is compared with a preset threshold. When the parameter information is greater than the threshold, the computer 510 controls the alarm 530 to issue an alarm to prompt the operator to intervene in the drip irrigation process. The alarm 530 can be an audible and visual alarm, etc.

[0043] In this embodiment, optionally, the test box 700 includes a frame 710 and a light-transmitting plate 720. The frame 710 is provided with a plurality of hollow areas, and the light-transmitting plate 720 is installed on the frame 710 to close the hollow areas. The frame 710 is set as a stainless steel part, and the light-transmitting plate 720 is set as a glass plate. For example, the frame 710 can be a cuboid-shaped frame body, having six hollow areas, and five of the hollow areas are closed by the light-transmitting plate 720, and the hollow area at the top is exposed for placing the water guide pipe 310, and the drip irrigation head 350 also inserts into the soil from the top opening.

[0044] It should be understood that the drip irrigation head 350 can be a conical head and can be made of rigid plastic. The inner diameter of the irrigation capillary 340 is set to 3 - 5 mm, and the length of the irrigation capillary 340 is set to not less than 250 mm. For example, in an alternative embodiment, the depth at which the irrigation capillary 340 is vertically inserted into the soil during operation is 25 cm. In addition, the number of water permeable holes 341 can be multiple. In the extending direction of the drip capillary, the distance between adjacent water permeable holes 341 can be set at 5 cm. Moreover, due to the function of the water permeable cotton 360, soil particles can be prevented from entering the water guide pipe 310.

[0045] It should be noted that before operation, the actual water supply pressure of 0.25 mpa is first set in the control cabinet 500. During operation, the control cabinet 500 monitors the above-mentioned negative pressure dial 540, compares it with the set pressure, and performs control adjustment to keep the pipe network pressure within the set value range all the time. During operation, water storage is carried out first. The first butterfly valve 160 is in the open state, and the second butterfly valve 201 is in the closed state. After the water storage is completed, the outlet butterfly valve is opened, and the safety valve 207 is in the open state.

[0046] In addition, the flow stabilization compensator 214 can feedback the change in the water consumption in the water storage tank body 110 to the control cabinet 500, control and adjust the water volume in the water storage tank body 110. At the same time, the vacuum suppressor 212 is used to release inert gas to adjust the pressure in the flow stabilization compensator 214 and the water storage tank body 110 to suppress the generation of negative pressure. By feeding back the pressure information obtained by the third pressure gauge 190 on the water storage tank to the control cabinet 500, the automatic balance of the entire pressure in the system is ensured, and continuous water supply is completed.

[0047] It should be noted that the alarm 530 is arranged above the negative pressure dial 540 of the soil moisture tensiometer 550, aiming at the scale range of 0 - 30 kpa. When the pointer of the negative pressure dial 540 enters the range of 0 - 30 kpa, the alarm 530 emits a buzzing sound, and this information is transmitted to the control cabinet 500. Through the control cabinet 500, a feedback action is made to control the electromagnetic flow valve 208 to reduce the flow rate to complete the entire control of the irrigation action.

[0048] The underground irrigation test system provided by this embodiment can realize automatic drip irrigation operation, with precise drip irrigation control and not easy to waste water resources.

[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underground irrigation test system, characterized in that: include: A water supply device (100), a drip irrigation device (300), a control cabinet (500) and a test box (700); the water supply device (100) comprises a water storage tank (110), a water inlet pipeline (120) and a water outlet pipeline (130), wherein the water inlet pipeline (120) and the water outlet pipeline (130) are both connected to the water storage tank (110); the drip irrigation device (300) comprises a water guide pipe (310), a first flow meter (320), a first turbulator (330), a water irrigation capillary tube (340), a drip irrigation head (350) and a water-permeable cotton (360); the first flow meter (320) is installed on the water guide pipe (310), and the water outlet pipeline (130) is connected to the first flow meter (320); The first turbulator (330) is installed at the end of the water pipe (310) away from the first flow meter (320); the irrigation capillary tube (340) is connected to the first turbulator (330); the drip irrigation head (350) is arranged at the end of the irrigation capillary tube (340); a water-permeable hole (341) is arranged on the tube wall of the irrigation capillary tube (340); the water-permeable cotton (360) is filled in the irrigation capillary tube (340); the irrigation capillary tube (340) and the drip irrigation head (350) are plugged into the test box (700); the test box (700) is used to store soil to be tested; and the control cabinet (500) is simultaneously connected to the water supply equipment (100) and the drip irrigation equipment (300) in communication.

2. The underground irrigation test system according to claim 1, characterized in that: The water supply equipment (100) further comprises a first pressure gauge (140), a second pressure gauge (150), a first butterfly valve (160), a filter (170) and a one-way flow control valve (180); the first pressure gauge (140), the first butterfly valve (160), the filter (170) and the one-way flow control valve (180) are sequentially installed on the water inlet pipeline (120); the second pressure gauge (150) is installed on the water storage tank (110); and the first pressure gauge (140) and the second pressure gauge (150) are both communicatively connected to the control cabinet (500).

3. The underground irrigation test system according to claim 1, characterized in that: The water supply equipment (100) further comprises a third pressure gauge (190), a second butterfly valve (201), a three-way joint (202), a first branch butterfly valve (203), a first branch pressure gauge (204), a second branch butterfly valve (205), a second branch pressure gauge (206), a safety valve (207), an electromagnetic flow valve (208), a water pipe reducer (209), a second flow meter (210) and a second turbulator (211); the water outlet pipeline (130) comprises a first pipe section (131), a first branch (132), a second branch (133) and a second pipe section (134), one end of the first pipe section (131) is connected to the water storage tank (110), the other end of the first pipe section (131) is respectively connected to the first branch (132) and the second branch (133) through a three-way joint (202), the other ends of the first branch (132) and the second branch (133) are both connected to one end of the second pipe section (134), and the other end of the second pipe section (134) is connected to a first flow meter (320); The third pressure gauge (190) and the second butterfly valve (201) are both installed on the first pipe section (131); the first branch butterfly valve (203) and the first branch pressure gauge (204) are both installed on the first branch (132); the second branch butterfly valve (205) and the second branch pressure gauge (206) are both installed on the second branch (133); the safety valve (207), the electromagnetic flow valve (208), the water pipe reducer (209), the second flow meter (210) and the second turbulator (211) are all installed on the second pipe section (134) in sequence, and the second turbulator (211) is arranged close to the first flow meter (320).

4. The underground irrigation test system according to claim 1, characterized in that: The water supply equipment (100) further comprises a vacuum suppressor (212) and a drain valve (213); the vacuum suppressor (212) is installed on the top of the water storage tank (110), and the drain valve (213) is installed on the bottom of the water storage tank (110); the vacuum suppressor (212) is communicatively connected to the control cabinet (500).

5. The underground irrigation test system according to claim 1, characterized in that: The water supply equipment (100) further comprises a flow stabilizing compensator (214), wherein the flow stabilizing compensator (214) is installed on one side of the water storage tank (110).

6. The underground irrigation test system according to claim 1, characterized in that: The water supply device (100) further comprises a height-adjustable support (215), wherein the support (215) is installed at the bottom of the water storage tank (110), and the support (215) is used to support the water storage tank (110) and is capable of adjusting the height of the water storage tank (110).

7. The underground irrigation test system according to claim 1, characterized in that: The control cabinet (500) comprises a computer (510), a bracket (520), an alarm (530), a negative pressure dial (540) and a soil moisture tensiometer (550); the bracket (520) is installed at the bottom of the computer (510); the alarm (530) and the negative pressure dial (540) are both connected to the computer (510) in communication; the soil moisture tensiometer (550) is connected to the negative pressure dial (540) in communication; and the soil moisture tensiometer (550) is used to be plugged into test soil.

8. The underground irrigation test system according to claim 1, characterized in that: The test box (700) comprises a frame (710) and a light-transmitting plate (720), wherein the frame (710) is provided with a plurality of hollow areas, and the light-transmitting plate (720) is mounted on the frame (710) and closes the hollow areas.

9. The underground irrigation test system according to claim 8, characterized in that: The frame (710) is configured as a stainless steel member, and the light-transmitting plate (720) is configured as a glass plate.

10. The underground irrigation test system according to claim 1, characterized in that: The inner diameter of the water irrigation capillary tube (340) is set to 3-5 mm, or the length of the water irrigation capillary tube (340) is set to be no less than 250 mm.

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