Study on the recovery and control of the alkili-saline lands in Songnen Plain

The alkili-saline land in Songnen plain is one of the three largest soda alkili-saline lands in the world.In recent years,due to the natural and human factors,the proportion of alkili-saline land kept increasing and the salinization became more and more serious,which disturb the sustainable development of the local economy,society and ecological environment.Beginning with the cause of the salinization in Songnen plain,based on its degree and character,this article paid emphasis on natural recovery and phytoremediation,with manual control so as to help it evolve to a better condition.