Effects of water stress and phosphorus on growth of kentucky bluegrass

Effects of water stress and phosphorus on growth of Kentucky Bluegrass were conducted under hydronic culture condition in greenhouse.The results showed that whether there is water stress or not,fresh weights of shoots,dry weights of shoots,dry weights of roots were increased significantly and ratios of roots to shoots were decreased with the increase of phosphorus addition.Increase of fresh weights of shoots,dry weights of shoots,dry weights of roots were inhibited by water stress,and fresh weights of shoots,dry weights of shoots,dry weights of roots,water contents of shoots were decreased significantly and ratios of roots to shoots were increased by water stress at the same phosphorus treatment.The inhibition of water stress on fresh weights of shoots,dry weights of shoots,dry weights of roots of Midnight was smaller than that of Brilliant.