Physiological responses of Myriophyllum spicatum to ammonium nitrogen. Effects of sediment adding ammonium on root morphology and nutrition absorption of Myriophyllum spicatum Effect of decomposition products of cyanobacteria on Myriophyllum spicatum and water quality in Lake Taihu,China Competition between Myriophyllum spicatum L. and Vallisneria natans (Lour.) Hara at Different Growth Stages Effects of nitrogen concentration in water on the germination and growth of Myriophyllum spicatum and Ceratophyllum demersum fragments Preliminary Analysis on the Genetic Diversity of Myriophyllum spicatum from China