Properties of Soil and Leaching Water Under Sorghum × Sudan Hybrid-Based Double Cropping Systems in Paddy Land

摘要

This study was carried out to investigate the properties of soil and water under Double-cropping sSH followed by whole crop barley (SSFWB) or by Hairy vetch (SSFHV) in paddy land. A field study was conducted at Baeksan-myeon, 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 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 in both sSFWB and SSFHV treatment (P<0.05). The contents of an exchangeable cations at the end of the experiment were remarkably higher than those at the beginning of the experiment in both SSFWB and SSFHV (P＜0.05). And then, the concentration of NO3-N, NH3-N and PO4-P in discharge and leaching water were not influenced by the cropping system.