서낙동강 지역의 농업용수 염해피해기준 설정에 관한 연구

Study on the standard of salinity management for irrigation on West Nakdong River area

West Nakdong River area raises salinity of underground water of rivers according to seawater inflow. Using limited agricultural water without other water resources can often cause growth disorder. Korean water quality standards for the protection of agricultural water uses were originally derived based on management of public water resource. They were not prepared to protect crop plants from salinity, therefore standard of salinity management is required for agricultural uses. In this research, through comparison with foreign agricultural water quality standard and literature investigation, electrical conductivity(EC) proposed by suitable agricultural water salinity standard in West Nakdong River area. The advantage of Electrical conductivity(EC) is that field automatic measurement can receive convenient and stable data by real time. EC standard established by the corelation of EC concentration and crop production, range from stable(below 1 dS/m) to moderate (1~5 dS/m), severe(above 5 dS/m). Also proposed a salinity management guidelines for user and administrator’s which applies agricultural water salinity standard. Therefore, using this standard and guidelines can help reducing salt damage of crops and contribute in efficient utilization of water resources in West Nakdong River area.