This paper included two parts : one is to generate the calibration process of watermark sensor ; the other is to use the sensor to measure soil moisture tension in field test 摘要本文主要可以分成两部份，一为土壤水分张力感应器之率定，主要是要了解土壤水分张力感应器之讯号处理程序，并以统计方法回归土壤水分张力值与土壤水分张力感应器之电压值的关系。
