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野外和室内试验表明,用6050Ⅺ型时域反射仪(TDR)测定土壤含水率与中子仪法相比,速度快,精度高;还发现随着导棒长度的增大,TDR与烘干法测定结果的偏差有所增大,文中给出了5种导棒长度的校正公式
Field and laboratory tests showed that soil moisture content measured by TDR was faster and more accurate than neutron spectrometry. It was also found that with the increase of length of guide rod, TDR and drying method The deviation of the results has increased, the paper gives the correction formula of the length of the five guide rods