At present, the field soil EC value is mainly measured by a digital display soil EC meter. The principle adopts a special metal material as the sensor. To realize the rapid determination of EC value of soil, etc. High concentrations of soluble salts can damage plants or cause plant roots to die. Soil conductivity sensor can improve this situation.
Soil salinity is an important indicator of soil salinization research and an important factor restricting agricultural production. The determination of soil salinity is usually to first determine the electrical conductivity in the soil. Then use the soil conductivity to calculate the amount of salt in the soil. In order to achieve rapid and effective determination of soil salinity. At present, the main applications are soil solution method and soil apparent conductivity method based on in-situ monitoring. The soil conductivity detection is easy to measure. Without destroying the original soil structure, it can measure moisture and electrical conductivity at the same time. It can quickly detect the moisture and salt in the soil in different scales.
Moisture is an important factor in soil conductivity. It not only affects the physical properties of the soil. It also restricts the dissolution and migration of nutrients in the soil. It is an important indicator for monitoring soil drought and degradation. FDR uses the oscillation of an LC (resonant) circuit. The soil moisture contentconductivity is determined by the frequency change caused by the change of the dielectric constant in the soil. This method can measure the water content of soil at different depths by adjusting the position of the sensor. The conductivity influence is small, and the measured result is accurate. The soil conductivity detection is easy to measure. Without destroying the original soil structure, it can measure moisture and electrical conductivity at the same time. It can quickly detect the moisture and salt in the soil in different scales.