An ultrasonic detection method for dynamic changes of the water content in plant stem

The change of the water content in plant stem is the most key study on the regulation of plant growth. In this paper, a plant stem ultrasonic pulse echo apparatus is designed to detect dynamic changes of water content in plant stems. Three sets of experiments are set to detect changes of the water content in different kinds of material and at different level by the changes of the means of the ultrasonic pulse echoes. The results show that the means of the ultrasonic can indicate the water content in the plant stem that is the lower the means of the ultrasonic gets, the higher the water content in the plant stem is.