Research Progress of Soil Moisture Measurement Technology

ZHENG Han; WANG Haifeng

doi:10.12338/j.issn.2096-9015.2022.0169

Volume 66 Issue 11

Jan. 2023

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ZHENG Han, WANG Haifeng. Research Progress of Soil Moisture Measurement Technology[J]. Metrology Science and Technology, 2022, 66(11): 31-36, 40. doi: 10.12338/j.issn.2096-9015.2022.0169

Citation:

ZHENG Han, WANG Haifeng. Research Progress of Soil Moisture Measurement Technology[J]. Metrology Science and Technology, 2022, 66(11): 31-36, 40. doi: 10.12338/j.issn.2096-9015.2022.0169

ZHENG Han, WANG Haifeng. Research Progress of Soil Moisture Measurement Technology[J]. Metrology Science and Technology, 2022, 66(11): 31-36, 40. doi: 10.12338/j.issn.2096-9015.2022.0169

Citation:

ZHENG Han, WANG Haifeng. Research Progress of Soil Moisture Measurement Technology[J]. Metrology Science and Technology, 2022, 66(11): 31-36, 40. doi: 10.12338/j.issn.2096-9015.2022.0169

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Research Progress of Soil Moisture Measurement Technology

doi: 10.12338/j.issn.2096-9015.2022.0169

ZHENG Han,
WANG Haifeng^,

National Institute of Metrology, Beijing 100029, China

Accepted Date: 2022-09-19

Available Online: 2022-12-01

Publish Date: 2023-01-17

Abstract

Abstract

Accurate measurement of soil moisture is an urgent need in agricultural irrigation, hydrology, environmental protection, and carbon metrology. The measurement techniques to determine soil moisture are diverse and rapidly developing, including time domain reflectometry (TDR), frequency domain reflectometry (FDR), neutron moisture meters, tensiometry, calcium carbide technique, gypsum blocks, electromagnetic techniques, gamma ray attenuation, hygrometric technique, heat flux sensor technique and remote sensing technique, in addition to the classical loss on drying. The loss on drying method is a reference method for the measurement of soil moisture, which can be used to calibrate other measurement methods to ensure the accuracy and reliability of the value. The calibration methods include factory calibration, field calibration, and laboratory calibration. In order to determine the soil moisture accurately and conveniently, it is necessary to select appropriate measurement methods and calibration methods according to the actual situation in order to obtain accurate and reliable measurement results. This paper introduces the principles and characteristics of measurement methods and calibration methods for soil moisture, and forecasts the development trend of related measurement technology.
- soil moisture,
- loss on drying,
- calibration,
- TDR,
- FDR,
- remote sensing technique

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References(36)

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