Abstract: Employing pot experiment without fertilizer,we studied the seedling of eight species of grass grown on fly ash,peat soil mixed with fly ash,sandy soil mixed with fly ash,peat soil and sandy soil.The results showed that fly ash was benefit to the growth of grass seedlings,including Trifoliun repens,T.pratense,Lolium perenne,Festuca arundinacea,and Dichondra repens.The seeds of lawn grass in the fly ash sprouted faster,with the seedling rate,seedling height,tillers better than those in the others.But the leaves were feeble with light colour at later seedling stage.The seed of Agrostis stolonifera in the fly ash sprouted slowly with a low seedling rate,while the seeds of Zoysia japonica and Festuca rubra could not sprout in fly ash.

Key words: Degraded red soil, Forest reestablishment, Fine-root, Action mechanism