Gökbulak Ferhat
Istanbul University, Faculty of Forestry, Department of Watershed Management, Bahçeköy-80895, Istanbul, Turkey.
J Environ Biol. 2003 Jan;24(1):45-53.
This study was carried out in plastic containers to compare growth performances of perennial ryegrass, orchardgrass and tall wheatgrass to be given priority in revegetation studies in Turkey. Three pre-germinated seeds of each grass species were planted separately into the soil in the black plastic containers. Seedlings were harvested 2, 4 and 6 months after planting pre-germinated seeds and measured for percentage of seedling emergence, rooting depth, height growth, leaf and tiller development and shoot and root weights. Germination percentage was 97.8% for perennial ryegrass, 64.1% for orchardgrass and 11.6% for tall wheatgrass and perennial ryegrass had the greatest whereas tall wheatgrass had the lowest seedling emergence. Two months old rooting depth was 25.66 cm for perennial ryegrass, 20.56 cm for orchardgrass and 30.10 cm for tall wheatgrass. At the end of the study, perennial ryegrass developed about 104 tillers per plant while they were 21.4 and 36.6 tillers per plant for orchardgrass and tall wheatgrass, respectively. Orchardgrass produced greater shoot and root biomasses than tall wheatgrass and similar to perennial ryegrass. All these meant that perennial ryegrass had a better growth performance than orchardgrass and tall wheatgrass to be used for erosion control.
本研究在塑料容器中进行，以比较多年生黑麦草、果园草和高羊茅的生长性能，这些草种在土耳其植被恢复研究中具有优先地位。将每种草的三颗预发芽种子分别种植在黑色塑料容器的土壤中。在种植预发芽种子后的2、4和6个月收获幼苗，并测量幼苗出土率、生根深度、株高生长、叶片和分蘖发育以及地上部和根部重量。多年生黑麦草的发芽率为97.8%，果园草为64.1%，高羊茅为11.6%，多年生黑麦草的幼苗出土率最高，而高羊茅最低。多年生黑麦草两个月大时的生根深度为25.66厘米，果园草为20.56厘米，高羊茅为30.10厘米。在研究结束时，多年生黑麦草每株约有104个分蘖，而果园草和高羊茅每株分别为21.4个和36.6个分蘖。果园草产生的地上部和根部生物量高于高羊茅，与多年生黑麦草相似。所有这些都意味着多年生黑麦草在用于侵蚀控制方面比果园草和高羊茅具有更好的生长性能。
