粉煤灰基质上草坪草苗期生长状况及其评价

Growing status and evaluation of seedling stages of grass on fly ash.

在未施肥的条件下,采用盆栽试验对粉煤灰、粉煤灰+泥炭土、粉煤灰+黄砂土、泥炭土、黄砂土5种基质上8种草坪草的苗期生长状况进行了研究。结果表明,白三叶、红三叶、黑麦草、高羊茅和马蹄金种子在粉煤灰基质上出苗快,其出苗率、苗高、分蘖数均高于粉煤灰+泥炭土和粉煤灰+黄砂土基质;但在后期出现叶片纤细、叶绿色浅淡。剪股颖在粉煤灰基质上出苗率低,结缕草和紫羊茅在粉煤灰基质上不出苗。

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.