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A dual-tracer method for the determination of tillage erosion in gravel soil

A gravel soil and tracer technology is applied in the field of measuring gravel soil tillage displacement, which can solve the problems of high gravel content, low tillage erosion rate, and magnet powder mixing, etc. Simple to use effects

Inactive Publication Date: 2017-11-21
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

The main form of the magnet powder used as a tracer is fine particles. However, due to the high content of gravel in the gravel soil, the magnet powder cannot be fully mixed with the gravel, which will cause the tillage erosion rate obtained by the magnetic tracer method to be smaller than the actual gravel soil. tillage erosion rate

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  • A dual-tracer method for the determination of tillage erosion in gravel soil
  • A dual-tracer method for the determination of tillage erosion in gravel soil
  • A dual-tracer method for the determination of tillage erosion in gravel soil

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Embodiment Construction

[0022] Below in conjunction with embodiment the present invention is further described in detail.

[0023] A dual-tracer method for the determination of tillage erosion in gravel soil, which uses the combination of magnetic tracer method and physical tracer method to calculate the tillage displacement of fine particles in gravel soil and the tillage displacement of gravel respectively, and according to the fine-grained displacement in gravel soil Weighted with the content percentage of gravel to calculate the tillage displacement of the gravel soil, and then calculate the tillage erosion rate, according to the following steps:

[0024] a), first measure the bulk density of the soil on the slope to be measured by digging the pit method, and measure the gravel content and the fine particle content of the gravel soil by the sieving method respectively with P 1 and P 2 express;

[0025] b) It is planned that the tracer mark plot is 1.00m wide, 0.2m long, and 0.2m deep. 0.2m ear...

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Abstract

The invention discloses a double tracer method for measuring the tillage erosion of gravel soil. Since the gravel content of the gravel soil is very high, the large particle size gravel cannot be fully mixed with the magnet powder, and the gravel soil cannot be accurately measured only by the magnetic tracer method. Tillage displacement of medium gravel, but the tillage displacement of fine particles in gravel soil cannot be accurately measured only by physical tracer method. Therefore, the patent of the present invention uses the combination of physical tracer method and magnetic tracer method to calculate the tillage displacement of gravel in gravel soil. Displacement and fine-grained tillage displacement, and according to the weighted average of the percentage of gravel and fine-grain content in gravel soil, the tillage displacement of gravel soil caused by tillage is calculated. The invention improves the shortcomings that the tillage erosion displacement of the gravel soil measured by the magnetic tracer method is smaller than the actual displacement and the physical tracer method cannot accurately measure the tillage displacement of the fine particles in the gravel soil, and has the advantages of simple operation, quick measurement and high measurement accuracy specialty.

Description

technical field [0001] The invention relates to a method for measuring tillage displacement of gravel soil, in particular to a double tracer method for measuring tillage erosion of gravel soil. Background technique [0002] As a new method of measuring tillage erosion, magnetic tracer technology is widely used in the measurement of tillage erosion rate due to its advantages of high measurement accuracy, convenience, simple equipment, and small workload. The main form of the magnet powder used as a tracer is fine particles. However, due to the high content of gravel in the gravel soil, the magnet powder cannot be fully mixed with the gravel, which will cause the tillage erosion rate obtained by the magnetic tracer method to be smaller than the actual gravel soil. tillage erosion rate. The present invention combines the means of the magnetic tracer method and the physical tracer method, uses the magnetic tracer and the physical tracer to measure the plowing erosion amount of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24G01N5/00
CPCG01N5/00G01N33/24G01N33/245
Inventor 张建辉贾立志张泽洪魏宇航
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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