Test collecting 6 typical soils at water fluctuation zone of Pubugou hydropower station in Sichuan,through the release of phosphorus indoor simulation experiment to study the changes of soil at water fluctuation zone and the relation between nutrients contents of soil and phosphorus release in alternately waterlogged and drained condition,the study was carried out in order to provide a reasonable reference for preventing eutrophication of hydropower station water and the scientific development of water fluc...