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With the progress of society and economic, Athletic sports was more and more loved and emphasized by peple, as aristocracy in lawn family, sports turf was elan rising and developing. As necessary condition of high lever sports project, sports turf should not only have the characters of general green lawns, but also have well trampling resistance. Starting from turf-bed substrate composition of sports turf, this paper resureches physical and chemical characters differences of different substrate compositions, and effect to growth and development of turfgrass, it provides theoretical basis for determining turf-bed composition reasonably and establishing high quality sportsturf. Under field condition, based on reasonable structure of turf-bed, the test ansatzes nine kinds of different turf-bed compositions, which coarse、fine sand respectively has five volume gradients:0、25%、50%、75%、100%, mixes with garden soil. The main results are as follows:Bulk density of high sediment was significantly higher than the control, but total porosity was significantly lower than the control, with increase of roiling times, bulk density among treatments appeared difference gradually and total porosity was significantly lower, then soil aeration was improved, which the best improvement was 50～75% sediment treatments among them; Soil hydraulic conductivity was also improved with increase of sediment content, morphologically manifested as soil saturated hydraulic conductivity and soil stable infiltration, both increased exponentially; But soil water retention decreased gradually as sediment increasing, when sand content was 50～75%, it not only accorded with permeability standard of international general acceptance, but also had relative better preservation capacity of water and fertility; Soil average mechanical resistence rose gradually as sediment increasing, when fine content was more 50%, coarse content was more 75%, average mechanical resistence significantly increased.Improvement of soil aeration and hydraulic conductivity can promote turf root growth, but inhibite aerial growth to some extent. Whether root length、root surface area、root average diameter, or root activity,50～75% sediment treatments showed better than others, even the most root tips was holo-sand treatment,25% coarse sediment treatment was better than 75% coarse sediment in turf density、texture、quality and resilience. However, soil water retention had more significant correlation with aerial growth than with root growth, can promote turf density and aboveground biomass increases; Soil average mechanical resistence had little correlation with aerial growth, but had significant positive correlation with root average diameter、root tips and root conductivity.Turf density、leaf width、turf quality、resilience and biomass of different treatments had difference in different extent. When coarse or fine sediment was 50%, turf density、turf quality and biomass reached their highest values, and significantly greater than holo-coarse-sand treatment and CK, the next was 75% fine sediment treatment; Leaf width of all treatments was lower than 2.0cm, but 50% fine sediment showed more advantage than others; Except for treatmentsⅠ、Ⅷand CK in individual months, turf resilience of different treatment accorded with sportsturf standard, whether fast growth period, or serious pests period, resilience of 50% fine sediment was significantly lower than CK.Above and belowground biomass of treatments showed similar changes, middle sediment treatmentsⅢandⅦwere highest in above and belowground biomass. Root biomass of different treatments had differet vertical distribution pattern, but had similar distribution characteristics, that root biomass decreased significantly with the soil depth, and distribution concentrated in 0～10cm layer, variance analysis indicated that, there were significant differences in 0～10cm belowground biomass between treatments, that treatmentsⅢ、ⅥandⅦwere significantly higher thanⅠand CK, the biomass in 10-20cm and below 20cm decreased significantly, and had no significant differences. The correlation coefficient between belowground biomass and total root length was 0.541 at the 0.05 level, the correlation coefficient between belowground biomass and root surface-area、root volume were 0.651 and 0.615 at the 0.01 level, the correlation coefficient between root number and total root length、average diameter were 0.500 and 0.695 at the 0.01 level.
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