The Influence Of Sound Wave On Trees Growth And Their Electrical Parameters

To explore sound wave impact on trees growth and its electrical parameters, some species trees are used as the research materials in the experiment, which used sound wave treatment in the nursery and woodland respectively. The results show that:1, the sound wave can promote the growth of trees. Under the sound wave treatment, Sophora japonica、Eucommia ulmoides and Lycium chinese’s standard branch growth has increased by 21.2%,90.4% and 97% respectively; Sophora japonica and Populus’s ground diameter growth has increased by 13.7% and 40.5%.2, Besides, sound wave can also enhance vigor, improve the capacity of pest-resistance of trees and increase the effects of chemical control.3, To study the mechanism of sound wave, it indicates that the transpiration rate increases significantly and leaf temperature decreases significantly under the sound wave treatment. In addition, the transplanting seedlings of Sophora japonica and more than 10 a of Pinus tabulaeformis were used as raw materials, MT4080A LCR as instrument in the experiment. The results show that:The instrument is most suited to measure the electrophysiological parameters of different trees growth potential which is capacitance and impedance, and frequency is 0.1 kHz. This parameter as electrical indicator of sound wave effects on tree growth, under the sound wave treatment, Sophora japonica and Acer truncation Bunge’s capacitance higher than control group 1.2 nF/cm and 2.04 nF/cm, impedance lower than 7.2 kΩ/cm and 12.1 kΩ/cm. The results have showed that sound wave can promote plant growth and can be reflected in electrical parameters.