Effect Of Cement And Polyacrylamide On Root Layer Reinforcement And Growth Of Tall Fescue Turf

At present,the turf bed reinforcement is reinforced with a single material,but it cannot meet the safety and stability of the playground bed.The high-quality padded bed provides a safe and reliable surface for athletes,while providing an excellent visual experience for both the live audience and the broadcast audience.The study strengthened the natural turf root layer by mixing fibers and chemical binders to provide reliable data support for modular lawns.In the test,0.4%(w/w)coconut silk and sand were mixed and set as the control group CK.The rest were mixed on the basis of sand mixed with 0.4%shredded coconut.The cement was designed to be 2%,4%,6%(W/W)according to the addition ratio;the polyacrylamide was designed to be 0.025%,0.05%,0.075%,0.1%,0.125%(W/W)according to the addition ratio.Set 3 repetitions per group.The results show:(1)The turf coverage,aboveground biomass,underground biomass,underground aboveground biomass ratio,total porosity,capillary porosity,non-capillary porosity,saturated hydraulic conductivity,total root length,total root surface area and average root diameter of cement treated groups were negatively correlated with cement.With the increase of cement proportion,the data index was linear.There was a significant difference between CK control group and CK control group.PH value,cross shear,cohesion,internal friction angle,sand leakage and soil compactness are positively correlated with cement,and the difference is also significant with the increase of cement proportion.Cement inhibits the growth of tall fescue,and significantly improves the shear strength and stability of soil.(2)Lawn coverage,aboveground biomass,underground biomass,underground aboveground biomass ratio,total porosity,capillary porosity,non-capillary porosity,saturated hydraulic conductivity,total root length,total root surface area and average root diameter,cohesion,internal friction angle,sediment leakage and soil compactness increased with polypropylene accumulation,The proportions of olefins increased,reached the maximum when the proportions were 0.1%,and then decreased.The saturated hydraulic conductivity and pH value gradually decreased with the increase of the proportion of polyacrylamide,showing a downward trend.There was a significant difference between polyacrylamide treatment and CK treatment.Polyacrylamide significantly promotes the growth of tall fescue,changes the physical and chemical properties of soil,promotes the root growth of root-soil complex,and improves the shear strength and stability of root-soil complex.(3)2%Portland cement is better in coverage,biomass,root index and soil physical and chemical properties.4%Portland cement is better in soil mechanical properties.The stability of 6%Portland cement after oscillation is better,(4)Under the conditions of comprehensive growthroot system,soil shear strength and vibration,0.1%polyacrylamide was the optimum proportion in the group.