Abstract: Filamentous green algae (FGA) are one group of the important primary producers in aquatic ecosystems. Because of high niche overlapping, there are complex interactions among FGA, submerged macrophytes and planktonic microalgae. In recent years, a large number of FGA have appeared in the clear lakes that have successfully recovered submerged plants, and excessive growth of FGA could affect the growth and propagation of submerged macrophytes and dynamic changes of planktonic communities. Thus, how to control the excessive proliferation of FGA becomes one of the hot topics in the aquatic ecosystem research. This paper reviews the progresses in the study of ecological functions of FGA, the effects of environmental factors on the growth, control methods of overgrowth and the competitive advantages between FGA and submerged plants and phytoplankton. The control strategy of FGA is forecasted from the aspects of life history and competition mechanism of FGA in order to provide important insights into the ecological restoration and management of eutrophic shallow lakes.

Key words: yield, nitrogen uptake and utilization, winter wheat, nitrogen use efficiency, wide-range planting pattern