Spartina is a perennial herb of Gramineae, and it is a water-loving and salt-tolerant plant. Its stem is erect, its rhizome is thick, it can spread quickly, its leaves are linear and its regeneration ability is strong. Rice grassland is produced in British coastal areas, and grows well in China after introduction. After natural hybridization, it is higher than European Spartina and American Spartina.
The soil in the beach area contains a lot of salt and other plants can't grow. Only rice grass can grow.
In order to avoid the harm of excessive salt, Spartina does not accumulate salt in the body, but secretes salt through the salt glands on the back of leaves and excretes excess salt in the body. Liquid containing sodium chloride is secreted to the surface of leaves. After the water evaporates, the sodium chloride contained in the secretion slowly turns into salt crystals and remains on the surface of the leaves. These salts left on the surface of leaves fall off one by one after being washed by wind, rain and rain; Or in autumn, the leaves Huang Shi, along with the fallen leaves, leave the plant. People call this salt-secreting plant a salt-secreting plant.
Plants with special salt secretion function are not only Spartina, such as petaloid flowers growing in Gansu and Xinjiang, Mayatou growing by the sea, Avicennia marina in mangrove, Tamarix chinensis and Populus euphratica.