Simulation device for fertilizer loss along with rainwater and leaching process

Abstract

The simulation device comprises a first cylinder and a second cylinder which are oppositely distributed up and down, a first partition plate is arranged in the first cylinder, an inner cavity of the first cylinder is divided into an upper part and a lower part by the first partition plate, a plurality of water spraying holes are distributed in the first partition plate, and a plurality of water spraying holes are formed in the second partition plate. A second partition plate is arranged in the second barrel and divides an inner cavity of the second barrel into an upper part and a lower part, and a plurality of water seepage holes are distributed in the second partition plate. Simulation of rainfall is achieved through the water spraying holes in the first partition plate, so that fertilizer on soil in the second barrel is washed, rainwater in the soil can permeate into an inner cavity of the lower portion of the second barrel through the water seepage holes in the second partition plate, rainwater loss and leaching process changes of the fertilizer on the soil during rainfall are reflected, and the device is convenient to use and high in practicability. The simulation effect is more real, and the experiment precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural fertilizers, in particular to a device for simulating the loss and leaching process of fertilizers with rainwater. Background Art

[0002] With the development of agriculture, fertilizer plays an increasingly important role in crop yield and quality. However, once fertilizer is applied to the soil, it suffers from losses of a number of nutrients, including nitrogen, phosphorus, and potassium. This loss is caused not only by farmers' inappropriate fertilization practices but also by objective factors such as volatilization, soil fixation, and fertilizer runoff and leaching with rainwater. Therefore, research on fertilizer runoff and leaching in different soils is needed to reduce fertilizer usage while improving fertilizer utilization.

[0003] At present, soil column experimental devices are mostly used for fertilizer leaching experiments. The traditional flooding irrigation method used in the existing soil column experimental device experiments can no longer meet the development of increasingly intelligent and economical precision facility agriculture. In addition, the flooding irrigation method cannot accurately reflect the rainwater loss and leaching process of fertilizers caused by rainfall, resulting in large experimental errors. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the existing technology and provides a simulation device for simulating the loss and leaching process of fertilizer in soil with rainwater, thereby improving the experimental accuracy.

[0005] The utility model is realized through the following technical scheme: a device for simulating the loss and leaching process of fertilizer with rainwater, comprising a first cylinder and a second cylinder relatively distributed up and down, a first partition being provided in the first cylinder, the first partition dividing the inner cavity of the first cylinder into two parts, an upper part and an lower part, a plurality of water holes being distributed on the first partition, a second partition being provided in the second cylinder, the second partition dividing the inner cavity of the second cylinder into two parts, an upper part and a lower part, a plurality of water seepage holes being distributed on the second partition.

[0006] When using this solution, the soil and fertilizer to be tested can be placed in the upper inner cavity of the second cylinder, and clean water can be introduced into the upper inner cavity of the first cylinder to simulate rainfall through the water holes on the first partition, thereby flushing the fertilizer on the soil in the second cylinder. The rainwater in the soil can seep into the lower inner cavity of the second cylinder through the seepage holes on the second partition, thereby reflecting the rainwater loss and leaching process changes of the fertilizer on the soil during rainfall. It is easy to use, the simulation effect is more realistic, and the experimental accuracy is improved.

[0007] As an optimization, the second cylinder is provided with a surface drain port connected to the inner cavity of the upper portion of the second cylinder. In this optimization solution, if rainwater cannot penetrate the soil during the test for soil containing lumps, the water on the surface of the soil is discharged from the surface drain port.

[0008] As an optimization, the second cylinder is provided with a water seepage outlet connected to the inner cavity of the lower part of the second cylinder. This optimization solution facilitates the drainage of rainwater that has seeped into the inner cavity of the lower part of the second cylinder.

[0009] As an optimization, the diameter of the seepage hole is larger than the diameter of the sprinkler hole. In this optimization scheme, the diameter of the seepage hole should be large to avoid soil blocking the seepage hole.

[0010] As an optimization, the first partition includes a horizontal portion and a bent portion, and the bent portion is inclined upward in a direction away from the horizontal portion. In this optimization solution, the bent portion forms a slope so that the clean water in the upper inner cavity of the first cylinder is collected on the horizontal portion.

[0011] As an optimization, the plurality of watering holes are distributed on the horizontal portion. This optimization solution can water one side of the soil through the horizontal portion, thereby facilitating the observation of the rainwater loss process of the fertilizer.

[0012] As an optimization, both the lower end of the outer wall of the first cylinder and the upper end of the outer wall of the second cylinder are provided with extension plates, and the two extension plates are connected by bolts. This optimization solution facilitates the connection of the first cylinder and the second cylinder.

[0013] As an optimization, a sealing gasket is provided between the two extension plates. This optimization solution improves the sealing performance of the connection between the first cylinder and the second cylinder.

[0014] As an optimization, a support leg is fixedly connected to the outer wall of the second cylinder. This optimization solution facilitates the stability of the device.

[0015] The beneficial effects of the utility model are as follows: when in use, soil and fertilizer to be tested can be placed in the upper inner cavity of the second cylinder, and clean water can be introduced into the upper inner cavity of the first cylinder to simulate rainfall through the water holes on the first partition, thereby flushing the fertilizer on the soil in the second cylinder, and rainwater in the soil can seep into the lower inner cavity of the second cylinder through the seepage holes on the second partition, thereby reflecting the rainwater loss and leaching process changes of the fertilizer on the soil during rainfall. The utility model is easy to use, the simulation effect is more realistic, and the experimental accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of part A;

[0018] Figure 3 is a top view of the first partition;

[0019] Figure 4 is a side view of the second partition;

[0020] As shown in the figure:

[0021] 1. First cylinder, 2. Second cylinder, 3. First partition, 31. Horizontal portion, 32. Bend portion, 33. Drain hole, 4. Second partition, 41. Seepage hole, 5. Surface drain port, 6. Seepage drain port, 7. Sealing cover, 8. Extension plate, 9. Bolt, 10. Sealing gasket, 11. Support leg. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0023] like Figures 1 to 4 As shown, a device for simulating the loss and leaching process of fertilizer with rainwater includes a first cylinder 1 and a second cylinder 2 relatively distributed in the upper and lower directions. A first partition 3 is provided in the first cylinder 1, and the first partition 3 divides the inner cavity of the first cylinder 1 into two parts, an upper and lower parts. A plurality of water holes 33 are distributed on the first partition 3. A second partition 4 is provided in the second cylinder 2, and the second partition 4 divides the inner cavity of the second cylinder 2 into two parts, an upper and lower parts. A plurality of seepage holes 41 are evenly distributed on the second partition 4, and the aperture of the seepage hole 41 is larger than the aperture of the water hole 33.

[0024] In this embodiment, the first and second barrels 1 and 2 are both made of a transparent material, such as acrylic. The inner cavities of the first and second barrels 1 and 2 are connected. Specifically, the bottom of the first barrel 1 and the top of the second barrel 2 are both open. An annular extension plate 8 is fixed to the lower end of the outer wall of the first barrel 1 and the upper end of the outer wall of the second barrel 2. The two extension plates 8 are connected by bolts 9, and an annular sealing gasket 10 is provided between the two extension plates 8.

[0025] In this embodiment, the first cylindrical body 1 is provided with an opening at the top, allowing fresh water to be introduced into the first cylindrical body through the opening. The second cylindrical body 2 is provided with a surface drain port 5 communicating with the inner cavity of the upper portion of the second cylindrical body. The second cylindrical body 2 is also provided with a seepage drain port 6 communicating with the inner cavity of the lower portion of the second cylindrical body. Specifically, the surface drain port 5 is located at the upper portion of the sidewall of the second cylindrical body 2, and the seepage drain port 6 is located at the bottom of the second cylindrical body 2. In this embodiment, a sealing cap 7 is threadedly connected to the seepage drain port 6.

[0026] The first partition plate 3 includes a horizontal portion 31 and a bent portion 32 . The bent portion 32 is inclined upward in a direction away from the horizontal portion 31 . The plurality of water spray holes 33 are evenly distributed on the horizontal portion 31 .

[0027] The outer wall of the second cylinder 2 is fixedly connected to a support leg 11. In this embodiment, three support legs 11 are fixedly connected to the lower end of the outer wall of the second cylinder, and the three support legs are evenly distributed along the circumferential direction.

[0028] Working Principle: During use, the soil to be tested is placed into the upper inner cavity of the second cylinder 2, and fertilizer is spread on the soil. The soil thickness is maintained at the upper surface of the soil corresponding to the surface drainage outlet 5, and the height of the upper surface of the soil near the surface drainage outlet is lower than the height of the end away from the surface drainage outlet. This creates a certain slope on the upper surface of the soil, facilitating the flow of rainwater, thereby simulating the loss of fertilizer by rainwater. The first cylinder 1 and the second cylinder 2 are then screwed together and fixed. Clear water is poured into the upper inner cavity of the first cylinder 1 and sprayed through the water holes of the first partition 3 to simulate the rainfall process, thereby reflecting the rainwater loss and leaching process of fertilizer on the soil during rainfall.

[0029] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A device for simulating the loss and leaching of fertilizer with rainwater, characterized by: The invention comprises a first cylinder (1) and a second cylinder (2) which are arranged relatively to each other in an upper and lower direction. A first partition (3) is provided in the first cylinder (1), the first partition divides the inner cavity of the first cylinder into two parts, an upper part and an lower part. A plurality of water holes (33) are distributed on the first partition (3). A second partition (4) is provided in the second cylinder (2), the second partition divides the inner cavity of the second cylinder into two parts, an upper part and an lower part. A plurality of water seepage holes (41) are distributed on the second partition (4).

2. The device for simulating the loss and leaching of fertilizer with rainwater according to claim 1, characterized in that: The second cylinder (2) is provided with a surface drain port (5) communicating with the inner cavity of the upper portion of the second cylinder.

3. The device for simulating fertilizer loss and leaching with rainwater according to claim 1, characterized in that: The second cylinder (2) is provided with a water seepage outlet (6) communicating with the inner cavity of the lower part of the second cylinder.

4. The device for simulating the loss and leaching of fertilizer with rainwater according to claim 1, characterized in that: The diameter of the water seepage hole (41) is larger than the diameter of the water sprinkling hole (33).

5. The device for simulating the loss and leaching of fertilizer with rainwater according to claim 1, characterized in that: The first partition (3) comprises a horizontal portion (31) and a bent portion (32), wherein the bent portion is inclined upward in a direction away from the horizontal portion.

6. The device for simulating the loss and leaching of fertilizer with rainwater according to claim 5, characterized in that: The multiple watering holes (33) are distributed on the horizontal portion (31).

7. The device for simulating fertilizer loss and leaching with rainwater according to claim 1, characterized in that: An extension plate (8) is provided at the lower end of the outer wall of the first cylinder (1) and the upper end of the outer wall of the second cylinder (2), and the two extension plates are connected by bolts (9).

8. The device for simulating fertilizer loss and leaching with rainwater according to claim 7, characterized in that: A sealing gasket (10) is provided between the two extension plates (8).

9. The device for simulating fertilizer loss and leaching with rainwater according to claim 1, characterized in that: A support leg (11) is fixedly connected to the outer wall of the second cylinder (2).

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