中国蔬菜Issue(2)：63-68,6.
番茄茎秆不同部位声发射信号差异性分析
Differential Analysis of Acoustic Emission Signals for Tomato Stalk at Different Part
摘要
Abstract
In the process of water transportation, the broken water column within the vessel would bring about acoustic emission (AE) signals, reflecting the water requirements of plants.Taking the potted experiment under negative pressure irrigation, the paper collected AE signals from tomato stalk with different stem height, including AE signals from the upper part, middle part and lower part and analyzed the changes of time-domain waveform, characteristic parameter, and spectral parameter.The results showed that along with the changes from upper part to lower part of the tomato stalk, the time-domain waveform amplitude, duration of amplitude variation, characteristic parameter and spectral parameters of AE signals all tended to increase gradually.The lower part of AE activity was the strongest.Therefore, the lower part of tomato stalk could be regarded as the best place for signals collection.This result could provide basis for rapid obtaining of water status of tomato plant.关键词
番茄/声发射信号/茎秆高度/频谱分析Key words
Tomato/Acoustic emission signal/Stem height/Spectrum analysis引用本文复制引用
张佳,郭文忠,乔晓军,李海平,李灵芝,李银坤,秦渊渊,余礼根..番茄茎秆不同部位声发射信号差异性分析[J].中国蔬菜,2019,(2):63-68,6.基金项目
国家重点研发计划项目(2017YFD0201503) （2017YFD0201503）
国家自然科学基金青年基金项目(51509005) （51509005）
