Effect of different biochar addition rates on Soil Physical Properties in rain-fed farmland

Biochar is extensively used for ameliorating soil structure. However, the evaluation of physical properties influenced by its large-scale use still unclear. Moreover, research on biochar mainly based laboratory tests, lacking medium and long-term field positioning tests. In this study, a local trial was conducted 3 years Loess Plateau in central Gansu, China. Six levels treatment were set with application amounts 0 t·ha -1 , 10 t· ha 20 30 40 50 (CK, T1, T2, T3, T4, T5, respectively). The influence various input porosity, bulk density, aggregate stability, saturated hydraulic conductivity from cm to layer studied during three wheat experiments. experimental study indicates that increase addition can significantly (p < 0.05) reduce density not only but also total content mechanically stable aggregates, MWD layer. Among them, T5 most significant 0.05). While determination Water Stable aggregates have an obvious improvement effect layer, significant. Therefore, conducive farmland region.