| In the context of the continuous improvement of our people’s living standards and the country’s vigorous promotion of football,the public’s demand for high-quality football stadiums continues to rise.The pros and cons of the football field turf are largely affected by the quality of the turf bed.The matrix ratio of the lawn bed is a key factor in the quality of the lawn bed.At present,the research on the matrix ratio of the turf bed of the football field is not sufficient.Therefore,this experiment explores the effects of different substrate ratios on the physical and chemical properties of the turf bed,the general properties of turfgrass and the sports properties from the perspective of the substrate ratio of the turf bed,and provides a theoretical basis for the construction of high-quality football turf beds in the future.The experiment intends to set 12 different substrate treatments,with medium coarse sand,fine sand,and rural soil as the main substrates,and add 0,15% vermiculite,15% perlite,15%vermiculite and 15% pearl according to the volume ratio.For rock,10% organic fertilizer is added to each treatment.After the substrates are mixed uniformly,the experiment is carried out in a field environment.The main research results are as follows:(1)The physical and chemical properties of each treatment were measured and compared.The results showed that: 90% medium-coarse sand+10% organic fertilizer and 75%medium-coarse sand+15% perlite+10% organic fertilizer treatment have large aeration porosity and good aeration,but the water seepage rate is too fast,they have poor water and fertilizer retention.The treatment with pastoral soil as the main substrate is significantly higher in bulk density than other treatments after rolling,and the aeration porosity is significantly lower than other treatments,with larger water-holding pores,high nutrient elements and organic matter content.It has good water retention and fertilization capabilities,but the water seepage rate is too slow to meet the drainage requirements of the football field.(2)The effect of different substrate ratios on the properties of turf,the results are as follows: the treatment with pastoral soil as the main substrate has a faster turf formation speed than other substrate treatments.Adding vermiculite and perlite to pastoral soil can significantly increase the speed of pastoral soil turf formation.Adding vermiculite to medium-coarse sand can increase the coverage of the lawn and significantly increase the speed of turf formation,while adding perlite cannot increase the speed of turf formation.Adding vermiculite and perlite to fine sand can not increase the speed of the plateau.After rolling,75% fine sand+15% vermiculite+10% organic fertilizer,60% rural soil+15%vermiculite+15% perlite+10% organic fertilizer,60% fine sand+15% vermiculite+15%perlite+10% organic fertilizer and 75% medium-coarse sand+ 15% vermiculite+10% organic fertilizer,these four sets of treatments perform better in terms of color,and the uniformity of the two treatments of 75% fine sand+15% vermiculite+10% organic fertilizer and 60% fine sand+15% vermiculite+15% perlite+10% organic fertilizer are better.90% medium coarse sand+10% organic fertilizer and 75% medium coarse sand+15% perlite+10% organic fertilizer treatments performed the worst in terms of color and uniformity.75% fine sand+15%vermiculite+10% organic fertilizer,60% rural soil+15% vermiculite+15% perlite+10%organic fertilizer,60% fine sand+15% vermiculite+15% perlite+10% organic fertilizer and75% medium coarse sand+15% vermiculite+10% organic fertilizer the above-ground biomass of the four groups was higher.Adding vermiculite to sand can reduce underground biomass and increase above-ground biomass.Adding vermiculite and perlite to the sand can also increase the above-ground biomass,but will not have much impact on the underground biomass,and can maintain the root-to-shoot ratio of turfgrass to a certain extent.(3)The effect of different matrix ratios on the sports performance indicators of turf beds,the results are as follows: in all treatments,only 60% fine sand + 15% vermiculite + 15%perlite+10% organic fertilizer and 60% medium coarse sand + 15% vermiculite + 15%perlite+10% organic fertilizer have a water seepage rate that meets the standards for football field construction.The surface hardness of different substrates is different after rolling.75%medium coarse sand+15% perlite+10% organic fertilizer,75% medium coarse sand+15%vermiculite+10% organic fertilizer,90% fine sand+10% organic fertilizer,60% fine sand+15%vermiculite+15% perlite+10% organic fertilizer and 60% medium coarse sand+15%vermiculite+15% perlite+10% organic fertilizer,the five sets of treatments meet the construction requirements of the football pitch bed.Among them,60% medium-coarse sand+15% vermiculite+15% perlite+10% organic fertilizer treatment can make the surface hardness reach the best standard for construction.The surface hardness of the other treatments does not meet the standard,and the rebound rate of each treatment can reach the standard.Traction force of four treatments: 90% fine sand+10% organic fertilizer,75% fine sand+15% vermiculite+10% organic fertilizer,60% fine sand+15% vermiculite+15%perlite+10% organic fertilizer and 60% medium coarse sand+15% vermiculite+15%perlite+10% organic fertilizer,their coefficient is within the standard range.According to the quality evaluation standards of football fields in my country,the ratio of the two substrates designed in this experiment is 60% fine sand + 15% vermiculite + 15%perlite+10% organic fertilizer and 60% medium coarse sand + 15% vermiculite + 15%perlite+10% organic fertilizer.Meet the construction needs of easy maintenance and highquality football field lawn. |
