践踏对5个植丝深度高羊茅草坪生理指标的影响

Effects of trampling on physiological indices of fescue turf at different filament planting depths in stitched hybrid turf

为了解践踏对不同植丝深度草坪草生理指标的影响,本研究以高羊茅(Festuca arundinacea)植丝式混合草坪为试验对象,设置5种不同人造草丝深度6、9、12、15、18 cm和不植丝(CK),通过模拟践踏处理的方式,对比研究5种植丝深度混合草坪与天然草坪在践踏胁迫下草坪草的坪观质量、生理指标以及践踏后草坪草的恢复状况。未践踏情况下,植丝深度18 cm草坪质量显著高于对照和其他深度植丝处理,随着践踏次数增加,其他各深度植丝处理也对草坪质量有一定提升作用。植丝15 cm处理高羊茅叶绿素含量均能更快恢复,9 cm以上处理组在抑制丙二醛含量、可溶性蛋白和抗氧化酶活性恢复方面均有优势。综合试验结果表明,践踏胁迫条件下植丝式混合草坪的坪观质量总体表现高于天然草坪,植入人造草丝深度9 cm以上能在不同指标上有效加强草坪草抵抗践踏胁迫的能力,提升草坪草践踏后恢复速率。本研究为植丝式混合草坪的技术探索及应用推广提供了理论和实践依据。

To understand the effects of trampling on the physiological indices of grass with different stich(filament planting)depth,a mixed grass with high fescue(Festuca arundinacea)composition was selected as the test object.Five different kinds of artificial grass with stitch depths of 6,9,12,15,and 18 cm and CK were set up.Through simulated trampling treatment,we compared the turf quality,physiological indices,and the recovery status of turf grass after trampling with natural turf and the mixed turf with a stitch depth of 5 cm.According to pre-treatment color and normalized differential vegetation index(NDVI)data,turf with a stitch depth of 18 cm had the highest quality.With an increased trampling duration,other depth treatments also presented certain promotive effects on turf quality.The chlorophyll content of tall fescue leaves stitched at a depth of 15 cm recovered at an accelerated rate,while stitching deeper than 9 cm demonstrated advantages in inhibiting malondialdehyde content,restoring soluble protein levels and enhancing antioxidant enzyme activities.We found that the overall performance of turf quality under trampling stress was higher than that of natural lawn,and the hybrid turf with a stitch depth of more than 9 cm could effectively strengthen the ability of turf to resist trampling stress to different extents,improving the recovery rate of turf grass after trampling stress.This study provides a theoretical and practical basis for the technical exploration and application of hybrid stitch turf.