时域反射仪(TDR)的应用现状与发展趋势

时域反射仪（TDR）作为一种能够不破坏样本、快速、简单、准确、可连续测定土壤水分及盐分（EC）的新型器材,在国内外得到了越来越广泛的应用。为推动TDR在农业节水领域的更广泛应用,本文在分析总结TDR的工作原理及其在土壤水分和盐分测定中的应用现状及其主要影响因素的基础上,提出了TDR在农业节水领域未来的发展趋势。

Present Application Status and Development Trend of the Time Domain Reflectometry

The Time Domain Reflectometry (TDR) as a new equipment has been more and more widely used in the world. It can measure the soil moisture and salinity (EC) fast, simple, accurate and continuously without destroying the soil sample. In order to promote more widely application of TDR in the agricultural water-saving area, the dominant mechanism, present application status and main influencing factors of TDR were analyzed and summarized in this paper. Based on the results, the future development trend of TDR in the water saving agriculture is proposed.