Soil moisture research has a very important value in agricultural production. Therefore, the use of soil water potential analyzers and other testing instruments to clarify the relationship between soil moisture dynamics and crop growth is an important prerequisite for agricultural water-saving irrigation, and can be used to guide rational irrigation and drainage. To directly serve the national economic construction. Therefore, the application of soil water potential meter in soil moisture research is very useful and necessary.
The soil water tension measured by the soil water potential meter usually refers to the suction of the soil to water. The general rule is that the soil is more wet, and the smaller the suction force is, the larger the converse is, so when the soil moisture increases to all the gaps filled with water At that time, the soil water tension will drop to zero. This also indicates that the soil moisture content has reached saturation at this time. At present, agricultural irrigation is still used to refer to the soil moisture content as a reference standard. Therefore, the relation between soil moisture content and soil water tension is measured, and then it can be determined according to the soil water potential analyzer. Measured soil water tension to know the current soil water content at any time, and to guide the irrigation work of the farmland, and no longer need to use the drying method to determine the soil moisture content, saving a lot of time and effort, can greatly Reduce labor intensity and improve work efficiency. Because of this, the soil water potential meter has very important promotion value in improving agricultural irrigation technology.
With the development of agricultural modernization, agricultural production tends to refine the production methods. Therefore, the use of soil water potential meter to study the law of soil moisture changes can not only achieve more accurate and reasonable farmland irrigation operations, effectively save irrigation water, improve soil moisture The utilization rate and crop yield, but also very important value for automatic irrigation operations, provide an important basis for the further development of intelligent irrigation, help to improve China's agricultural irrigation, achieve a more detailed and more efficient scale Agricultural production.
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