Agricultural planting water environment influence simulation device and system

Abstract

The invention discloses an agricultural planting water environment influence simulation system, and belongs to the technical field of planting water simulation experiments.The agricultural planting water environment influence simulation system comprises a test panel, a test column and a water supply tank, and the water supply tank is installed on the test panel through a supporting frame; a first pipeline, a second pipeline, a third pipeline and a fourth pipeline are sequentially and fixedly mounted on the water supply tank, a mixer is fixedly mounted on the second pipeline, and an alternator is fixedly mounted on the third pipeline. Meanwhile, tap water and reclaimed water are used for irrigating crops in one test column in turn through an alternator, crop potting tests are carried out by taking the tap water as a contrast, and influences on crop growth, yield and quality in different irrigation periods are monitored; secondly, comparing the influence of the reclaimed water on the growth, the yield and the quality of the crops in different irrigation modes;

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of planting water simulation experiment, and particularly relates to an agricultural planting water environment influence simulation device and system. BACKGROUND

[0002] Water is one of the important factors for agricultural development, and water resources have an important influence on agriculture, including irrigation, crop growth and agricultural product quality.

[0003] Reclaimed water is non-drinking water that can be repeatedly used within a certain range after urban sewage or domestic sewage is treated to reach the standard, and is used as an alternative irrigation water source in agriculture in many countries and regions. Compared with China, the overall sewage treatment level in China is relatively low, and the practice of applying reclaimed water for irrigation is also relatively small.

[0004] Reclaimed water may contain components that are not conducive to crop growth, such as high salinity, heavy metals and other chemical pollutants, so whether the application of reclaimed water for irrigation will affect the safety of users by causing heavy metals to be enriched in the roots, stems, leaves and seeds of crops is a matter of great concern. The existing device generally only has one pollutant experimental column, and the experimental results obtained are not accurate enough and are greatly affected by the concentration of reclaimed water. SUMMARY

[0005] The purpose of the present application is to solve the problem that the existing technology generally only has one pollutant experimental column, and the experimental results obtained are not accurate enough and are greatly affected by the concentration of reclaimed water. The present application provides an agricultural planting water environment influence simulation device and system.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] An agricultural planting water environment influence simulation device comprises:

[0008] A test panel, the bottom of the test panel is fixedly installed with two symmetrically arranged supporting legs through bolts;

[0009] A test column, the test column is arranged on the test panel, and crops are planted in the test column;

[0010] A water supply tank, the water supply tank is installed on the test panel through a supporting frame, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline are sequentially fixedly installed on the water supply tank, a mixer is fixedly installed on the second pipeline, and an alternator is fixedly installed on the third pipeline.

[0011] In order to make the water supply tank drop to a suitable height, preferably, an ultrasonic sensor is fixedly installed on the first pipeline.

[0012] For irrigation by mixing tap water and reclaimed water in a 1:1 ratio, preferably, the mixer includes a first housing, which has a first installation chamber and a Y-shaped flow channel. A first motor is fixedly installed in the first installation chamber, and screws are rotatably installed in the two branches of the Y-shaped flow channel. The drive shafts of the two screws are connected to the output end of the first motor by belt drive.

[0013] To alternate between tap water and reclaimed water for irrigation, preferably, the alternator includes a second housing with a chamber inside. The chamber is inverted conical in shape, and a squeezing plate is rotatably mounted inside the chamber via a drive component. A partition is fixedly mounted inside the chamber, and a U-shaped plate is fixedly mounted on the partition. The partition and the U-shaped plate separate the upper part of the chamber into a first channel, a second channel, and an outflow channel. A sliding chamber is provided inside the second housing and communicates with the chamber. A slider is slidably mounted inside the sliding chamber, and a receiving groove is provided on the slider.

[0014] Furthermore, a pressure valve is fixedly installed inside the outflow channel.

[0015] Furthermore, the driving component includes a second motor fixedly mounted on the second housing, with a turntable rotatably mounted on the output of the second motor. A first swing arm is eccentrically mounted on the end of the turntable away from the second motor, and a connecting pin is fixedly mounted on the end of the first swing arm away from the turntable. A connecting arm is coaxially mounted on the extrusion plate, and the connecting arm is rotatably connected to the connecting pin. A second swing arm is rotatably mounted on the second housing, with one end of the second swing arm rotatably connected to the first swing arm, and a pull rod rotatably mounted on the other end of the second swing arm. The pull rod is fixedly connected to the slider.

[0016] To detect leachate in the soil, preferably, a collection tube is fixedly installed inside the test column. One end of the collection tube inside the test column has a collection port, which is filled with gauze. The other end of the collection tube extends out of the test column and is fixedly installed with a water collection box. The end of the collection tube inside the water collection box has a leachate outlet.

[0017] To ensure that crops receive even light and grow better, the test panel is further provided with an installation port and a mounting base that matches the installation port. A first bevel gear is fixedly installed on the mounting base, and a third motor is fixedly installed on the test panel. A second bevel gear is fixedly installed on the output end of the third motor, and the first bevel gear meshes with the first bevel gear.

[0018] In order to lower the water supply tank, preferably, a straight-moving device is fixedly installed on the support frame, and the output end of the straight-moving device passes through the support frame and is fixedly connected to the water supply tank.

[0019] An agricultural planting water environment impact simulation system, the operation steps are as follows:

[0020] Step 1: First, homogenize the soil and plant crops;

[0021] Step 2: Then, the effects of different irrigation methods on crop growth, yield, and quality at different irrigation periods were monitored.

[0022] Step 3: Next, the leachate in the soil is tested;

[0023] Step 4: Finally, rotate the crop at a certain angle every once in a while to ensure that the crop receives even light and grows better.

[0024] Compared with the prior art, the present invention provides a device and system for simulating the environmental impact of agricultural planting water use, which has the following beneficial effects:

[0025] 1. This simulation device for the environmental impact of agricultural planting water uses a mixer and an alternator. During irrigation, tap water and reclaimed water are mixed in a 1:1 ratio and irrigated into one test column. At the same time, tap water and reclaimed water are alternately used to irrigate the crops in the same test column through the alternator. By conducting a pot experiment on crops with tap water as a control, the effects of different irrigation periods on crop growth, yield, and quality are monitored. Secondly, the effects of different irrigation methods with reclaimed water on crop growth, yield, and quality are compared.

[0026] 2. This agricultural planting water environment impact simulation device, through the setting of collection pipe and water collection box, when irrigating, the collection port is filled with gauze, so the soil will not block the collection pipe. The leachate in the soil will enter through the collection port and flow from the leachate outlet to the water collection box along the inner wall of the collection pipe. By detecting the leachate, the absorption of elements in the water body during plant growth can be compared.

[0027] 3. This agricultural planting water environment impact simulation device, through the setting of a third motor, drives the second bevel gear to rotate and transmits the rotational force to the meshing first bevel gear. The first bevel gear drives the mounting base on one side to rotate, so that the test column will rotate a certain angle at regular intervals, ensuring uniform light exposure for the crops and better growth. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an agricultural planting water environment impact simulation device proposed in this invention. Figure 1 ;

[0029] Figure 2This is a schematic diagram of the structure of an agricultural planting water environment impact simulation device proposed in this invention. Figure 2 ;

[0030] Figure 3 This is a partial structural schematic diagram of an agricultural planting water environment impact simulation device proposed in this invention;

[0031] Figure 4 This is a schematic diagram of the mixer structure of an agricultural planting water environment impact simulation device proposed in this invention;

[0032] Figure 5 This is a schematic diagram of the alternator structure of an agricultural planting water environment impact simulation device proposed in this invention;

[0033] Figure 6 This is a schematic diagram of the data collection tube structure of an agricultural planting water environment impact simulation device proposed in this invention.

[0034] Figure 7 This invention proposes a device for simulating the environmental impact of agricultural planting water use. Figure 2 A schematic diagram of the structure of part A.

[0035] In the diagram: 1. Test panel; 101. Mounting port; 2. Support leg; 3. Test column; 4. Water supply tank; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Fourth pipeline; 9. Mixer; 901. First housing; 902. First mounting chamber; 903. Y-shaped flow channel; 904. First motor; 905. Screw; 10. Alternator; 1001. Second housing; 1002. Chamber; 1003. Partition; 1004. U-shaped plate; 1005. First channel; 1006. Second channel; 1007. Outflow channel; 1008. Sliding chamber; 1009. Slider; 1010. Receiving groove; 1011. Second motor; 1012. Turntable; 1013. Extrusion plate; 1014. First swing arm; 1015. Connecting pin; 1016. Connecting arm; 1017. Second swing arm; 1018. Pull rod; 1019. Pressure valve; 11. Collection tube; 1101. Collection port; 1102. Leakage port; 12. Water receiving box; 13. Mounting base; 14. First bevel gear; 15. Third motor; 16. Second bevel gear; 17. Straight traveler; 18. Support frame. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Example:

[0039] Reference Figures 1-7 An agricultural planting water environment impact simulation device includes: a test panel 1, with two symmetrically arranged support legs 2 fixedly installed at the bottom of the test panel 1 by bolts; a test column 3, which is set on the test panel 1 and crops are planted inside the test column 3; and a water supply tank 4, which is installed on the test panel 1 by a support frame 18. A first pipeline 5, a second pipeline 6, a third pipeline 7, and a fourth pipeline 8 are fixedly installed on the water supply tank 4 in sequence. A mixer 9 is fixedly installed on the second pipeline 6, and an alternator 10 is fixedly installed on the third pipeline 7.

[0040] Among them, there are 4 test columns 3, which are equidistant and arranged in a line, corresponding to the first pipeline 5, the second pipeline 6, the third pipeline 7 and the fourth pipeline 8 respectively. The soil inside the test column 3 is field mixed soil with a depth of 0-80cm. The test crop varieties are corn, soybean or rice, etc.

[0041] A sealing plate is fixedly installed inside the water supply tank 4, which divides the water supply tank 4 into two spaces of equal volume. The two spaces are filled with tap water and reclaimed water, respectively, for experimental comparison. The first pipeline 5 is used to transport tap water to the first test column 3. The second pipeline 6 is used to transport a mixture of tap water and reclaimed water to the second test column 3. The mixing ratio of tap water and reclaimed water is 1:1. The third pipeline 7 is used to alternately transport tap water and reclaimed water to the third test column 3. The fourth pipeline 8 is used to transport reclaimed water to the fourth test column 3. It should be noted that the reclaimed water is the effluent from the secondary sedimentation tank after treatment by the activated sludge method in the sewage treatment plant.

[0042] An ultrasonic sensor is fixedly installed on the first pipeline 5.

[0043] A straight-through device 17 is fixedly installed on the support frame 18. The output end of the straight-through device 17 passes through the support frame 18 and is fixedly connected to the water supply tank 4.

[0044] The straight-moving device 17 can be any of the pneumatic cylinder, oil cylinder, or hydraulic cylinder, and its output end can extend and retract to drive the water supply tank 4 to move back and forth on the support frame 18.

[0045] The ultrasonic sensor, model HC-SR04, is electrically connected to the straight-runner 17 via an existing controller. A soil moisture sensor, model BD-PT100-X, is also inserted in the soil to detect soil moisture levels. It is electrically connected to the pump in the water supply tank 4 via an existing controller. When the moisture level is lower than the set value, the pump starts to move and water the soil. When the moisture level is higher than the set value, the pump stops and the water supply tank 4 returns to its original position.

[0046] With the above structure, the ultrasonic sensor can measure non-contact distances from 2cm to 450cm. The straight-runner 17 uses this sensor to perform height extension and retraction positioning of the test columns 3 at different heights. The first pipe 5, the second pipe 6, the third pipe 7, and the fourth pipe 8 irrigate the four test columns 3 respectively. When the soil moisture content is 50%-60% of the maximum water holding capacity, the water is increased to 90%-100%. This process is repeated to simulate the water migration process of the crop water and soil system and to record the growth of crops in the four test columns 3.

[0047] Reference Figures 4-5 The mixer 9 includes a first housing 901, a first mounting chamber 902 and a Y-shaped flow channel 903 are provided in the first housing 901, a first motor 904 is fixedly installed in the first mounting chamber 902, and screws 905 are rotatably installed in the two branches of the Y-shaped flow channel 903. The drive shafts of the two screws 905 are connected to the output end of the first motor 904 by belt drive.

[0048] The alternator 10 includes a second housing 1001, a chamber 1002 is formed inside the second housing 1001, the chamber 1002 is inverted conical, a squeezing plate 1013 is rotatably mounted inside the chamber 1002 via a driving member, a partition 1003 is fixedly mounted inside the chamber 1002, a U-shaped plate 1004 is fixedly mounted on the partition 1003, the partition 1003 and the U-shaped plate 1004 divide the upper part of the chamber 1002 into a first channel 1005, a second channel 1006 and an outflow channel 1007; a sliding chamber 1008 is formed inside the second housing 1001, the sliding chamber 1008 is connected to the chamber 1002, a slider 1009 is slidably mounted inside the sliding chamber 1008, and a receiving groove 1010 is formed on the slider 1009.

[0049] A pressure valve 1019 is fixedly installed inside the outflow channel 1007.

[0050] The driving component includes a second motor 1011 fixedly mounted on the second housing 1001. A turntable 1012 is rotatably mounted on the output end of the second motor 1011. A first swing arm 1014 is eccentrically mounted on the end of the turntable 1012 away from the second motor 1011. A connecting pin 1015 is fixedly mounted on the end of the first swing arm 1014 away from the turntable 1012. A connecting arm 1016 is coaxially mounted on the extrusion plate 1013 and is rotatably connected to the connecting pin 1015. A second swing arm 1017 is rotatably mounted on the second housing 1001. One end of the second swing arm 1017 is rotatably connected to the first swing arm 1014. A pull rod 1018 is rotatably mounted on the other end of the second swing arm 1017 and is fixedly connected to the slider 1009.

[0051] With the above-described structure, the second pipeline 6 contains two independent tap water pipes and a reclaimed water pipe. The tap water pipe and the reclaimed water pipe are respectively connected to two branches of the Y-shaped flow channel 903. When the pump delivers water, the output of the first motor 904 drives two screws 905 on both sides to rotate via a belt. As the two screws 905 rotate, they gradually mix the water from the two branches together and irrigate the second test column 3. Simultaneously, the second motor 1011 drives the turntable 1012 to rotate. Because the first swing arm 1014 is eccentrically mounted on the turntable 1012 and constrained by the connecting arm 1016, the rotational motion is converted into a reciprocating push-pull linear movement, thus allowing the connecting arm 1014 to move. Under the action of reciprocating pushing and pulling force, the 16 swings around the connection point with the second shell 1001 as the axis. The squeezing plate 1013 swings together with the swinging of the connecting arm 1016. When the squeezing plate 1013 swings to one side in the chamber 1002, the space on the other side increases and the internal negative pressure increases, drawing in reclaimed water / tap water. The space shrinks, and the reclaimed water / tap water inside is squeezed into the first channel 1005 / second channel 1006, and finally enters the outflow channel 1007 and is irrigated into the third test column 3 through the pressure valve 1019. By conducting a crop pot experiment with tap water as a control, the effects of different irrigation methods and irrigation periods of reclaimed water on crop growth, yield and quality are compared.

[0052] See Figure 3 and Figure 6 A collection tube 11 is fixedly installed inside the test column 3. One end of the collection tube 11 inside the test column 3 has a collection port 1101, which is filled with gauze. The other end of the collection tube 11 passes through the test column 3 and is fixedly installed with a water receiving box 12. One end of the collection tube 11 inside the water receiving box 12 has a seepage port 1102.

[0053] With the above structure, during irrigation, the collection port 1101 is filled with gauze, so the soil will not block the collection tube 11. The leachate in the soil will enter through the collection port 1101 and flow along the inner wall of the collection tube 11 from the leachate port 1102 to the water collection box 12. By detecting the leachate, the absorption of elements in the water during plant growth can be compared.

[0054] See Figure 7 The test panel 1 is provided with an installation port 101 and a mounting base 13 adapted to the installation port 101. A first bevel gear 14 is fixedly installed on the mounting base 13. A third motor 15 is fixedly installed on the test panel 1. A second bevel gear 16 is fixedly installed on the output end of the third motor 15. The first bevel gear 14 is meshed with the first bevel gear 16.

[0055] With the above structure, the third motor 15 drives the second bevel gear 16 to rotate and transmits the rotational force to the meshing first bevel gear 14. The first bevel gear 14 drives the mounting base 13 on one side to rotate, so that the test column 3 will rotate a certain angle every once in a while, ensuring uniform light exposure for the crop and better growth.

[0056] An agricultural planting water environment impact simulation system, the operation steps are as follows:

[0057] Step 1: First, fill the interior of test column 3 with field mixed soil to a depth of 0-80cm and homogenize it, plant crops, and insert a humidity sensor into the soil;

[0058] Step 2: Then, fill the water supply tank 4 with tap water and reclaimed water that do not interfere with each other. When the soil moisture content is 50%-60% of the maximum water holding capacity, the pump in the water supply tank 4 is turned on, and the straight-runner 17 moves the water supply tank 4 to the top of the test column 3. The tap water flowing out of the first pipeline 5 enters the first test column 3. The tap water and reclaimed water in the second pipeline 6 are respectively connected to the two branches of the Y-shaped flow channel 903. When the pump delivers water, the output end of the first motor 904 drives the two screws 905 on both sides to rotate through the belt. When the two screws 905 rotate, they gradually mix the water in the two branches together and irrigate the second test column 3. The second motor 1011 drives the turntable 1012 to rotate. Due to the first swing arm 1014 deflecting... The core is mounted on the turntable 1012 and constrained by the connecting arm 1016, thus converting the rotational motion into a reciprocating push-pull linear movement. As a result, the connecting arm 1016 swings around the connection point with the second housing 1001 under the action of the reciprocating push-pull force. The extrusion plate 1013 swings along with the swing of the connecting arm 1016. When the extrusion plate 1013 swings to one side in the chamber 1002, the space on the other side increases and the internal negative pressure increases, drawing in reclaimed water / tap water. The space shrinks, and the reclaimed water / tap water inside is squeezed into the first channel 1005 / second channel 1006, and finally enters the outflow channel 1007 and is irrigated into the third test column 3 through the pressure valve 1019. The reclaimed water flowing out of the fourth pipeline 8 enters the fourth test column 3.

[0059] Step 3: Next, during irrigation, the collection port 1101 is filled with gauze, so the soil will not block the collection tube 11. The leachate in the soil will enter through the collection port 1101 and flow along the inner wall of the collection tube 11 from the leachate port 1102 to the water collection box 12. By detecting the leachate, the absorption of elements in the water during plant growth can be compared.

[0060] Step 4: Finally, the third motor 15 drives the second bevel gear 16 to rotate and transmits the rotational force to the meshing first bevel gear 14. The first bevel gear 14 drives the mounting base 13 on one side to rotate, so that the test column 3 will rotate a certain angle every once in a while, ensuring uniform light exposure for the crop and better growth.

[0061] Step 5: Conduct a pot experiment on crops using tap water as a control to compare the effects of different irrigation methods and timings of reclaimed water on crop growth, yield, and quality.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for simulating the environmental impact of agricultural planting water use, characterized in that, include: The test panel (1) has two symmetrically arranged support legs (2) fixedly installed at its bottom by bolts; Test column (3), the test column (3) is set on test panel (1), and crops are planted in the test column (3); Water supply tank (4), the water supply tank (4) is installed on the test panel (1) by a support frame (18), the water supply tank (4) is fixedly installed with a first pipeline (5), a second pipeline (6), a third pipeline (7) and a fourth pipeline (8) in sequence, the second pipeline (6) is fixedly installed with a mixer (9), and the third pipeline (7) is fixedly installed with an alternator (10).

2. The device for simulating the environmental impact of agricultural planting water use according to claim 1, characterized in that, An ultrasonic sensor is fixedly installed on the first pipeline (5).

3. The device for simulating the environmental impact of agricultural planting water use according to claim 1, characterized in that, The mixer (9) includes a first housing (901), in which a first mounting chamber (902) and a Y-shaped flow channel (903) are provided. A first motor (904) is fixedly installed in the first mounting chamber (902). Screws (905) are rotatably installed in the two branches of the Y-shaped flow channel (903). The drive shafts of the two screws (905) are connected to the output end of the first motor (904) by belt drive.

4. The device for simulating the environmental impact of agricultural planting water use according to claim 1, characterized in that, The alternator (10) includes a second housing (1001), and a chamber (1002) is provided inside the second housing (1001). The chamber (1002) is inverted conical in shape. A squeezing plate (1013) is rotatably installed inside the chamber (1002) via a driving component. A partition (1003) is fixedly installed inside the chamber (1002). A U-shaped plate (1004) is fixedly installed on the partition (1003). The partition (1003) and the U-shaped plate (1004) divide the upper part of the chamber (1002) into a first channel (1005), a second channel (1006), and an outflow channel (1007). The second housing (1001) has a sliding chamber (1008) inside, which is connected to the cavity (1002). A slider (1009) is slidably installed inside the sliding chamber (1008), and a receiving groove (1010) is provided on the slider (1009).

5. The device for simulating the environmental impact of agricultural planting water use according to claim 4, characterized in that, A pressure valve (1019) is fixedly installed inside the outflow channel (1007).

6. The device for simulating the environmental impact of agricultural planting water use according to claim 4, characterized in that, The driving component includes a second motor (1011) fixedly mounted on the second housing (1001). The output of the second motor (1011) is rotatably mounted on a turntable (1012). A first swing arm (1014) is eccentrically mounted on the end of the turntable (1012) away from the second motor (1011). A connecting pin (1015) is fixedly mounted on the end of the first swing arm (1014) away from the turntable (1012). A connecting arm (1016) is coaxially mounted on the extrusion plate (1013). The connecting arm (1016) is rotatably connected to the connecting pin (1015). A second swing arm (1017) is rotatably mounted on the second housing (1001). One end of the second swing arm (1017) is rotatably connected to the first swing arm (1014), and the other end of the second swing arm (1017) is rotatably mounted with a pull rod (1018). The pull rod (1018) is fixedly connected to the slider (1009).

7. The device for simulating the environmental impact of agricultural planting water use according to claim 1, characterized in that, A collection tube (11) is fixedly installed inside the test column (3). One end of the collection tube (11) inside the test column (3) has a collection port (1101) and the collection port (1101) is filled with gauze. The other end of the collection tube (11) passes through the test column (3) and is fixedly installed with a water receiving box (12). One end of the collection tube (11) inside the water receiving box (12) has a seepage port (1102).

8. The device for simulating the environmental impact of agricultural planting water use according to claim 3, characterized in that, The test panel (1) is provided with an installation port (101) and a mounting base (13) adapted to the installation port (101). A first bevel gear (14) is fixedly installed on the mounting base (13). A third motor (15) is fixedly installed on the test panel (1). A second bevel gear (16) is fixedly installed on the output end of the third motor (15). The first bevel gear (14) meshes with the first bevel gear (16).

9. The device for simulating the environmental impact of agricultural planting water use according to claim 1, characterized in that, A straight-running device (17) is fixedly installed on the support frame (18), and the output end of the straight-running device (17) passes through the support frame (18) and is fixedly connected to the water supply tank (4).

10. An agricultural planting water environmental impact simulation system, employing the agricultural planting water environmental impact simulation device according to any one of claims 1-9, characterized in that, The operation steps are as follows: Step 1: First, homogenize the soil and plant crops; Step 2: Then, the effects of different irrigation methods on crop growth, yield, and quality at different irrigation periods were monitored. Step 3: Next, the leachate in the soil is tested; Step 4: Finally, rotate the crop at a certain angle every once in a while to ensure that the crop receives even light and grows better.

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