The basic scientific problem of wetland agriculture in the Sanjiang Plain.

Wetland is a natural complex,i.e.a transitional zone between land and sea. Wetland agriculture is an agricultural activity carried out in concentrative distribution areas of wetlands in large areas. The Sanjiang Plain is an important concentrative distribution area with high biodiversity. One crop farming production model has not meet the need of present wetland agriculture production. The character of wetland of Sanjiang Plain was analyzed and the measures of sustainable agriculture development were put forward. These measures include to protect the landscape, build the micro-wetland region and fully using the biotic resources of wetland.