Abstract: Anew way is introduced in the designing of constructed wetland.Two sorts of wetlands are combined dynamically to form a system which possesses two functions "ecological restoration"and "ecological purification".According to investigation in the lake area,and based on the principles of ecology and ecological economy,we proposed a plan in which ecological engineering is used in the important area to ensure the integrity of structure and function of wetland ecosystem.

Key words: Wheat, Aluminum speciation, Acid phosphatase (AP), Protein