Effect Of Trampling On Quality Of Hybrid Turf With Different Fiber Implantation Density

Hybrid turf effectively combines the advantages of natural turf and artificial turf,overcomes their respective shortcomings,and is the most innovative advanced technical solution for football field.It is widely used in top sports centers and professional football clubs worldwide.It becomes the first choice for building high-quality football fields.The quality of hybrid turf with different fiber implantation densities was studied to provide a scientific theoretical basis for the quality change of fiber implantation hybrid turf,and guide the construction and maintenance management.In this study,perennial ryegrass(Lolium perenne L.)fiber implantation hybrid turf was selected as the research object.The effects of different trampling intensity(non-trampling,moderate trampling and heavy trampling)on turf growth,playing quality,soil properties of different fiber implantation densities on hybrid turf,CK(AO)?2×6(A6)?2×4(A4),2×2(A2),were studied.The results showed that:(1)The apparent quality and aboveground biomass of hybrid turf showed an upward trend with the increase of fiber implantation density.Under non-trampling and heavy trampling,the underground biomass ranged from high to low:A2>A4>A6>A0;under moderate trampling,the underground biomass ranged from high to low:A4>A2>A6>AO.Turf quality,aboveground biomass and underground biomass decreased with the increase of trampling intensity,showing a downward trend.The rule is non-trampling>moderate trampling>heavy trampling.The turf quality and biomass of fiber implantation treatment were higher than A0,which indicated that fiber implantation did not affect the normal growth of natural turf and played a protective and supportive role in the canopy and root system of turf.The underground/aboveground biomass ranged from 0.81 to 1.09,and the distribution of underground biomass and aboveground biomass showed a constant or near-constant growth relationship.The damage of turf from high to low was A0>A6>A4>A2,which indicated that silk planting had a certain protective effect on turf.The higher the density of fiber implantation,the better the protective effect.(2)The variation range of surface hardness was 69?97 Gm,all within the qualified range.The rotational traction increased with the increase of planting density,ranging from 29 to 44 N·m,and basically within the optimum range of 30 to 45 N m.The sliding friction coefficient of A2 is larger than that of other treatments,and the variation range of sliding friction coefficient was 0.95?1.64.(3)There was no significant difference in soil water content under different fiber implantation densities,indicating that fiber implantation had no effect on soil water content.Under non-trampling and moderate trampling,A4 had the highest soil compactness value,while under heavy trampling,Soil compactness tended to increase with the increase of fibre implantation density.Under non-trampling and moderate trampling,A4 had the largest shear strength,while A6 had the largest shear strength under heavy trampling.The shear strength values of all fiber implantation treatments were higher than A0,which indicated that fiber implantation increased the amount of roots and promoted the increase of shear strength.The shear strength increased with the increase of trampling strength,showing the rule of heavy trampling>moderate trampling>non-trampling.On the whole,the quality of fiber implantation hybrid turf was better than that of non-fiber implantation turf,which can be applied to high-level and world-class football field.