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This paper presents the experimental analysis on the relationship between Ultrasoinc acoustic emissions (UAEs) and water consumption associated with transpiration. In order to avoid background noise interference, the UAEs detecting frequency is between 100 KHz and 1 MHz. From the experiments, the hypothesis can be drawn that irrigation conducts when the UAEs reach a certain threshold, which may be...
Based on the theory of Near field Acoustical Holography (NAH), the mechanism of the plant generating ultrasonic sound resource signal is discussed under the condition of the plant in the condition of disease stress. By the two-dimensional FFT transform to redesign its three-dimensional sound field model, the multifactor synthesis mathematical mechanism model will be established, which describes the...
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