Effects Of Traffic Stress On The Physiology And Growth Of Green-turf Grass Of The Yuanxuan No.1 Agrositis Stotonifera In Summer

Effects of traffic intensities on growth and tabolic resistance mechanism of Yuexuan No.1 was studied under high temperature and humidity in Summer, and the effects of special operation and maintainance measures on recovery of Green turf quality were also studied.The synthetical assessment of Green turf quality was evaluated by Seven indexes of Green-turf such as density,coverage, colour,texture, uniformity,leaf wear degree and Green turf speed. The main results were as follows:1.Monthly variation of density, coverage, and above-ground biomass of under traffic stress were stable and all the seven indexes of Yuanxuan No.1 were higher than the new strain No.2 and Penncross. Yuexuan No.1 had the best adaptability to traffic stress and it's density, coverage and above-ground biomass were higher than Yuexuan No.2 and Penncross. The variational trend of above-ground biomass similarity with under-ground biomass . The depth of root changed significantly and became shallow under moderate and heavy traffic stess.2. The consistency of the three turf-grassland grass descended with higher traffic stress.The consistency of Yuexuan No.1 was the best under different traffic stess treatment.The caculated results had the consistent trend with appearance characters. The leaf abrasion degree of the new strain No.2 and Penncross was higher than Yuexuan No.1.There was significant differences among various traffic stress(p <0.01) increased with inhancement of traffic stress.Yuexuan No.1 had the best lubricity under various traffic stress.3.The results of comprehensive evaluation of turf quality showed that Yuexuan No.1 had the best tolerant capacity, and the new strain No.2 was the second to Yuexuan No.1, Penncross was the worst.All indexes of Yuexuan No.1 had good performance except the rate of leaf abrasion and variational scope of character indexes was not evident while density, coverage and consistency was prominent.4.The variational scope of leaf comparative water-containing of the three turf-grassland grass was the largest. The rate of cell injury was significantly discrepancy with different species and traffic intensities. Penncros had the largest rate of cell injury and largest decreasing scope. And the new strain No.2 was the second to Yuexuan No.1, Penncross was the least.5. The activity of POD,SOD,CAT of Yuexuan No.1 was the highest under various traffic intensities and it's significant differences among various treatments.6. The praline in leaf of Yuexuan No.1 was the highest under different traffic intensity. The accumulated MDA in the plant indicated that protection enzymic system POD,SOD,CAT had the strongest capability of eliminating active oxygen. The root systemic livingness of Yuexuan No.1 was the largest, the new strain No.2 was the second to Yuexuan No.1, and Penncross was the least. The root systemic livingness significant differences with various traffic intensity and grass species.7.The bulk density of soil decreased greatly and the recovery velocity of the three turf-grassland grass increased under various traffic intensity after implementing special operational measurements to turf-grassland. And the recovery velocity of the indexes such as density, coverage and chlorophyll-containing of Yuexuan No.1 was higher than the new strain No.2 and Penncross . Penncross did not able to indure moderate and heavy traffic stress,most grass died and its turf-using characteristics could not recover indeed with special conservational treatments.8.With a serial of special efficient measures such as sparsing, coring, sanding, fertilization and spraying fungicide ,we could not only break soil tighteness, but also greatly enhanced indexes of turf-grassland turf-using and functional using functions.