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Method for measuring soil water content on site

A soil water content, field technology, applied in measuring devices, by removing certain components, weighing, instruments, etc., can solve the problems of inconsistent drying time control scale, long time consumption, damage to the ring knife, etc., to avoid soil moisture Loss, avoid instrument detection method, avoid the effect of vibration damage

Inactive Publication Date: 2016-04-20
辽宁省水文局 +2
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  • Abstract
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  • Claims
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Problems solved by technology

However, the manual soil extraction and drying method takes a long time, the timeliness of monitoring data is poor, and there is a certain loss of soil moisture in the process of field sampling to indoor drying, and the drying time control scale is inconsistent during specific operations. These factors will also affect the monitoring data. Accuracy
In addition, the existing manual soil extraction method will destroy the undisturbed soil structure in the ring knife, which will affect the accuracy of the measurement data
Therefore, at present, there is still a lack of a method for the determination of soil moisture content with high accuracy.

Method used

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  • Method for measuring soil water content on site
  • Method for measuring soil water content on site
  • Method for measuring soil water content on site

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Embodiment Construction

[0045] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0046] see figure 1 , figure 2 , image 3 , the present invention adopts special-purpose earth-absorbing equipment for drilling standard volume undisturbed soil to obtain soil without destroying the state of the soil as much as possible. Wherein, the drill bit 10 and the ring cutter 20 are both cylindrical. In the figure, the drill bit 10 is connected to the bottom of the ring cutter 20, and the ring cutter 20 is connected to the bottom of the positioning seat 30, and the positioning seat 30 is connected to the scale rod 50. The scale rod 50 has Scale can indicate the depth of the ring cutter 20 drilling into the soil. The top of the positioning seat 30 has a ...

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Abstract

The invention discloses a method for measuring soil water content on site. Soil is directly taken under field crops and weighed, and monitoring data is obtained through a formula. The method includes the step of calibrating the standard volume dry soil weight and the step of taking soil on site to measure the soil water content again. A special soil taking device is adopted, rotating soil taking is conducted under field crops in a drilling mode, vibration damage to undisturbed soil can be avoided, the influences of drilling on field vegetation and crops and soil structures are the lowest, and rapid backfill is facilitated. In addition, the depth between the centers of cutting rings and the ground can be precisely positioned by observing a sizestick, and soil samples can be precisely collected; by means of the on-site soil taking and weighing mode, soil moisture loss can be effectively avoided. The soil water content is precisely measured through the method, and various defects of an instrument detection method and a traditional manual soil taking and drying method can be avoided.

Description

technical field [0001] The invention belongs to the technical field of soil moisture monitoring and relates to a method for measuring soil moisture content. Background technique [0002] Soil moisture monitoring is an important basic work for drought resistance. Moisture monitoring requires the measurement of soil water content at moisture stations. Basic measurement methods include manual soil extraction and drying methods and automatic monitoring instrument methods. Moisture automatic monitoring instruments can be divided into fixed buried and portable according to the method of use. The soil structure and environmental changes at the location of the fixed buried monitoring instrument are difficult to keep pace with the field, and the representativeness of the monitoring data is poor. Portable monitoring instruments can be used directly in the field, but when there is drought or high soil viscosity, it is difficult to insert into the soil, and it is easy to damage the moni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N1/08
CPCG01N1/08G01N5/045
Inventor 金福一章树安杨威刘满红陈敏李剑辉王占林张云陈媛媛杨桂莲于钋王红霞
Owner 辽宁省水文局
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