| Coastal saline-alkaline land is an important resource in our country, but the growth of plants was restricted by the special physical and chemical properties seriously. The researchers at home and abroad have done many deeply researches in physical and chemical properties and water movement of coastal saline-alkaline soil for a long time, and proposed some appropriate and effective improvement measures. In recent years, “raised field-shallow pond” pattern is a new method of coastal saline-alkaline land improvement, which has collected excellent saline improved methods at home and abroad. The utilization of sea ice water in “raised field-shallow pond” pattern is a distinctive feature in coastal saline improvement. Until now, the main study content include many kinds of comprehensive utilization test, such as land use change and optimizes configuration, field construction, improvement of saline-alkali soil, water and salt movement, sea ice water irrigation, crop planting, salt-tolerant plants screening and so on. It has been achieved good results in soil salinity,
soil fertility, crop yields and economic efficiency. In the future, there are still many researches needed to explore the content and new direction of “raised field - shallow pond” pattern, such as improvement of soil fertility, the right crop varieties chosen, the utilization of clean energy sources, ecological development, and the sustainable development of coastal saline-alkaline land. |