In collaboration with the National Marine Environmental Monitoring Center, Tianjin University, Dalian Polytechnical University, and Hebei Zhongjie Friendship Farm, Beijing Normal University kicked off a comprehensive technical study in January 2004 for utilizing sea ice resources of the Bohai Sea. The research team separates halogen sacs from sea ice, using centrifugal means, and enhance salt water channels in the ice through temperature modulation. Researchers have worked out key technologies for sea ice desalination, and produced desalination facilities using different means, including centrifuge, temperature modulation, gravity, and counter infiltration. They also completed a whole range of field experiments from land based sea ice collection, to desalination, and further to shipping. Abundant technical parameters and cost indicators have been obtained from a small scale desalination process. Based on the analysis of the impacts of sea ice based irrigation on the yields of 14 grain, cash, and feed crops, and salt content in soils over a hundred mu(1 mu= 0.0667 hectare) of irrigated farmland, researchers sorted out the species that fit the sea ice water irrigation with different salinities, and defined a salinity limit for such irrigation. In the meantime, the team made an experiment to grow Sarotherodon sp in desalinated sea ice water. All these efforts have provided valuable agricultural application examples using sea ice water. The equipment designed by the team can produce desalinated sea ice water with a salinity lower than 2??, costing less than RMB 4 a ton.