The soil moisture observation in China has been measured from the physical characteristics of soil moisture to the official business operation. The overall situation is good, but some stations also have many problems. Long-term work in this work, the application of soil moisture monitoring system has encountered many problems in the observation operation. Through careful study and standardization, careful analysis of research problems, consultation with similar problems in the station, and continuous handling of new problems, we have accumulated some good experiences and methods. Discussions are now made from the following aspects, and it is hoped that the staff will be helpful in the operation of the soil moisture monitoring system.
The four repeated points shall be determined in four communities according to the specifications. After the soil samples required by the soil moisture monitoring system are completed, they shall be marked to provide reference for the next drilling to determine the location of the drill. Large stones encountered in the soil should be taken out and cannot be placed in the soil box as soil samples. If too many stones affect the representativeness of the soil samples, the location of the drill should be re-selected. The amount of soil to be taken should be between 40 and 60 g. It should not be less or too much.
Pre-review and proofread the observation records of the soil moisture monitoring system through vertical and horizontal comparison methods. Longitudinal comparison is to analyze the weight and water content of each layer from shallow to deep with the rainfall situation and soil water evaporation condition, to see if the change has continuity. If the weight or moisture content of a certain layer or layers is too large or partial Small, should be analyzed in accordance with the size and time of precipitation and the evaporation of water.
After applying the soil moisture monitoring system for detection and recording, it is necessary to write a soil moisture monitoring report. First, we must be familiar with the standard of soil relative humidity and drought. Secondly, we should conduct in-depth research and analysis on past and future weather, and do not understand the weather changes. The soil moisture monitoring report has no application value, because it does not know the future drought trend because it does not know the trend of the weather. Therefore, it is necessary to write a soil moisture monitoring report based on the data of the soil moisture monitoring system at the measuring point and the actual situation of the drought and the future weather evolution.
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