The field water regime in a deformable sub-irrigated peat-moorsh soil profile

摘要

The paper presents the results of analysis of the soil water regime in a deep fen peat-moorsh soil located in the Middle Biebrza Basin (Poland) within the Kuwasy drainage sub-irrigation system used as permanent grassland.The observed values for pressure head,moisture content and groundwater level show that the required water conditions were present in the root zone of grasslands even during dry periods with low sums of precipitation in June and July 2006.Changes in the soil surface level of up to 42 mm were also observed during the period considered.