Properties of Soil and Leaching Water Under Winter Whole Crop Barley-Based Double Cropping Systems in Paddy Land

摘要

This study are carried out to investigate the effects of double cropping system, such as winter whole crop barley followed by rice (WBFR) or after Sorghum x sudan hybrid (WBASS), in paddy land on the properties of soil and water. A field study was conducted at Baeksairmyeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The pH and the contents of T-N, P2O5 and organic matter (OM) in soil samples collected at the end of the experiment were remarkably higher than those at the beginning of the experiment (P＜0.05) in both WBFR and WBASS. The contents of an exchangeable cations (CEC) at the end of the experiment were remarkably higher than those at the beginning of the experiment (P＜0.05). The concentrations of NO3-N, NH3-N and PO4-P in discharge and leaching water were not influenced by the cropping system.