Relationship between organic matter content in sandy soil and hydrodynamic parameters

By testing and analysing saturated water conductivity,water characteristic curve and water constants in sandy soi with different organic matter contents,the relationship between sandy soil organic matter and hydrodynamic parameters i; studied.The results show that there are linear relationships between sandy soil organic matter and water parameters: thf higher the soil organic matter content,the greater the soil water content under same soil water suction;there is a very remarkable negative linear relationship between the soil saturated water conductivity and the soil organic matter content anc 0.01 mm physical clay;the soil organic matter is the most important influence factor on soil hydrodynamic parameters ir sandy soil.