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Micro-lysimeter soil sample collecting method

A collection method and lysimeter technology, applied in sampling devices and other directions, can solve the problems of small size, large workload of surrounding excavation, difficulty in collecting undisturbed soil, etc., so as to reduce disturbance, improve quality and high efficiency. Effect

Active Publication Date: 2018-08-14
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the surrounding excavation method is commonly used to collect soil samples for micro-lysimeters, or the electric screw press transmission technology is used. The surrounding excavation method has a large workload, and the electric screw press transmission technology needs to collect soil samples with different specifications due to the miniature lysimeter. Large, it is difficult to collect undisturbed soil or near undisturbed soil by this method

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as Figures 1 to 4 As shown, the micro lysimeter soil sample collection method of the present embodiment includes:

[0035] With the same origin as the center of the circle, draw a collection circle and a digging circle with the first diameter and the second diameter as the diameter respectively at the center of the soil sample collection area, wherein the first diameter is the diameter of the cylindrical soil sample to be collected, so said second diameter is 8-12 cm larger than said first diameter;

[0036] Insert a soil sample collection knife into the lower soil layer on the sampling circle to separate the cylindrical soil sample to be collected from the surrounding soil, that is, to insert a circle of separation between the cylindrical soil sample A to be collected and the surrounding soil seam

[0037] Half of the soil at the annular structure between the collection circle and the digging circle is dug out, that is, a 180° arc groove B is formed between the...

Embodiment 2

[0044] Such as Figure 4 As shown, the micro-lysimeter soil sample collection method of the present embodiment, on the basis of Embodiment 1, the shovel side of the arc-shaped blade is an arc-shaped structure, and the central angle of the arc-shaped structure is 30 ° . In this embodiment, the shovel side of the arc structure makes it easier for the knife to be inserted into the ground.

Embodiment 3

[0046] Such as Figures 5 to 7As shown, the micro-lysimeter soil sample collection method of this embodiment, on the basis of Embodiment 1, a handle bar 3 is also connected to the arc-shaped knife box. A stepping block 4 is provided on the arc-shaped knife box corresponding to the earth-shoveling force direction of the arc-shaped blade. see Figure 7 The arrow direction is the length direction of the arc-shaped knife box (this direction is also the length direction of the present invention).

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Abstract

The invention discloses a micro-lysimeter soil sample collecting method which is designed in order to reducing the damage on a soil sample original state. The micro-lysimeter soil sample collecting method comprises the steps of adopting the same original point as a circular center, and drawing a collecting circle adopting a first diameter as the diameter, and a hole digging circle adopting a second diameter as the diameter in a soil sample collecting area center; on the sample collecting circle, adopting a soil sample collecting cutter to insert into a lower soil layer, separating a cylindrical soil sample to be collected from soil around the soil sample, digging and removing a half of soil at an annular structure part between the collecting circle and the hole digging circle, and forminga notch under the cylinder to be collected; jacking the cylindrical soil sample to be collected, and bringing back to a sample plot for carrying out a soil lysimeter experiment. According to the micro-lysimeter soil sample collecting method provided by the invention, the occurrence of the phenomenon that a soil sample is too big or too small or a shape drawing does not conform to the requirement of a micro-lysimeter on the soil sample after a soil sample is collected through a traditional method is avoided, and the workload of follow-up processing after the soil sample is collected is reducedto a large extent.

Description

technical field [0001] The invention relates to a soil sample collection method of a miniature lysimeter. Background technique [0002] At present, the surrounding excavation method is commonly used to collect soil samples for micro-lysimeters, or the electric screw press transmission technology is used. The surrounding excavation method has a large workload, and the electric screw press transmission technology needs to collect soil samples with different specifications due to the miniature lysimeter. It is difficult to collect undisturbed soil or near undisturbed soil by this method. [0003] In order to solve the above problems, a micro lysimeter soil sample collection method was developed to make it more valuable in industry. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a micro lysimeter soil sample collection method that reduces the collection workload of the micro lysime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 易武英苏维词喻理飞王志杰
Owner GUIZHOU UNIV
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