Taking the portable soil moisture collecting instrument calibrating process as an example,this paper introduced the specific calibration principle,technical requirements and calibration methods,which is a reference for the other soil moisture automatic acquisition instrument calibration based on the dielectric constant method,and provides a beneficial exploration for development of soil moisture automatic acquisition instrument technology and operational application.%以便携式土壤水分采集仪实际标定的操作过程为例[1-2],重点阐述该类仪器具体的标定原则、技术要求和标定方法等,对其它以介电常数法为原理的土壤水分自动采集仪的标定具有借鉴和参考作用,为新型土壤水分自动采集仪的技术发展及业务化应用进行了有益的探索.
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