Analysis of Soil Moisture Monitoring Error

Analysis of Soil Moisture Monitoring Error

1. Soil moisture sensor

1. Irregular soil selection

In addition to the problems of the equipment itself, the use of soil moisture sensors should also consider areas with large differences in geographical environmental factors such as altitude, topography, and soil texture.

①There are differences in topography, there are many ditch bottoms and hilltop slopes, and there are large differences in climate conditions, planting systems and irrigation conditions in small areas.

② The soil layer of the burial site contains more stones, and more stones and less soil make the soil volume moisture content naturally low, and the soil relative humidity is also low, which has a great impact on the actual measurement, which in turn leads to the occurrence of data errors.

③ Some soil moisture sensors are buried in less soil or uneven soil texture, etc., similar to the impact caused by more stones, and will also directly affect the monitoring of soil volumetric moisture content.

④ Improper installation method: There is a gap between the detection instrument and the soil, which will also cause a large error in the manual comparison of the observation data and the instrument observation data.

2. Solution:

It is fully considered that the installation site of the instrument should be representative of the local soil type, landform and geological conditions.

There are errors in the daily maintenance and management of the soil moisture sensor. Many problems are mostly caused by improper installation, the failure of the instrument itself, and inadequate maintenance and management. Therefore, the daily maintenance of the observation instrument should be strengthened, and problems should be found and solved in time to ensure that the soil moisture is automatically The monitoring system is functioning normally.