Saturated Hydraulic Conductivity and Its Influential Factors of Typical Farmland in Red Soil Region

The undisturbed and disturbed soil saturated hydraulic conductivities of a typical red soil from dry land and paddy land respectively were studied.In addition,the influencing factors of the soil saturated hydraulic conductivities also had been studied,including soil bulk density,soil texture and the organic matter content.The results show that the range of the undisturbed soil saturated hydraulic conductivity was between 44.8×10-4and 1.94×10-4 cm/s,and the disturbed soil saturated hydraulic conductivity was between 2.59×10-4 and 1.09×10-4 cm/s.The surface layer's saturated hydraulic conductivity was the largest one.According to the results of SPSS,it can be concluded that bulk density was the main influencing factor,soil texture and the organic matter content also influence the soil saturated hydraulic conductivity.