受损沟叶结缕草草坪修复技术研究

The study of restoring methods for improving Zoysia matrella lawn subjected to traffic

通过利用打孔、切根、梳草和施肥措施对践踏沟叶结缕草草坪进行夏初修复和秋季修复的研究.结果表明,打孔、切根和梳草3种措施对夏初修复的草坪草层高度和叶片长度有明显的促进作用(P<0.05),草层高度依次比未修复+未施肥处理(CK)增加34.64%、27.71%和39.26%;叶片长度依次增加24.03%、17.05%和31.78%,增长效果在草坪没有继续践踏的情况下可持续50 d.打孔、切根和梳草对夏初修复的草坪密度和地上生物量有明显的促进作用(P<0.05),修复处理50 d,草坪密度分别比CK提高15.2%、10%和14.4%;地上生物量分别提高22.37%、11.84%和22.16%.打孔和梳草处理可以降低草坪芜枝层的厚度.施肥与打孔、切根和梳草处理之间在草坪密度和地上生物量上存在显著的互作效应(P<0.05).夏初修复的效果优于秋季修复;打孔的效果优于切根的效果,打孔的密度以100～120孔/m2为宜.

In the coming years there will be a trend towards an increase.in recreational lawn area in large cities. How to best manage this recreational lawn is an important research subject in which recovery management is.one of the key issues. This study was conducted to determine the effects of a variety of mechanical methods including coring aerification, vertical mowing, and raking, in addition to fertilization, on the quality of traffic Zoysia rnatrella lawn. The experiment utilized a split-plot design with the mechanical methods forming the main plots and fertilizer the subplots. The height of turfgrass and the length of the second leaf from the top were shown to significantly increase under the coring aerification, vertical mowing and raking, treatments compared with the control treatment, with the height of turfgrass increased by 34.64%,27.71% and 39.26%, respectively, and length of leaf increased by 24.03%,17.05% and 31.78%, respectively. The restoring-induced increase in height and length lasted for a period of 50 days. The turfgrass density and above-ground biomass（AGB） were significantly higher in the restoring plots than in the control plots, where the turfgrass densities were increased by 15.2%,105 and 14.4% in the treatments of coring aerification, vertical mowing and raking, respectively; compared with the control treatment. Further, AGB increased by 22.37%,11.84% and 22. 16% in ttmtreatments of coring aerification, vertical mowing and raking, respectively, compared with the control treatment. Coring aerification and raking was shown to reduce thatch. The fertilizer treatment significantly inreased turfgrass height, leaf length, AGB, and turfgrass density （P〈0.05）. There was a significant interaction effect between mechanical restoring methods and fertilizing on AGB and turfgrass density （P〈0. 05）. Overall, the effects of restoring in early summer were greater than in autumn;the effects of coring aerification method, 100--120 core/m^2, on improving lawn were greater than vertical mowing; with the raking treatmentmost effective when carried out in spring.