The study site,a phosphorus-rich region which is located in the Damiao country,Xiage town,Chaohu city,is in the upper reaches of the little Zhegao river.Serious exploration of the region resulted in the formation of a large number of bare areas.Control of soil erosion in this area to reduce phosphorus loss is important to the eutrophication of Chaohu lake.The soil and water conservation of five different planting patterns were studied in the experiment,including D1(bare solpes),D2(Cynodon dactylon community...