.33 Cool-season Grass Species Selection And Heat Resistance,

In this paper based on qualitative observations of field and laboratory experiments controlled experiment quantitative ways to combine, 33 kinds of cold-season turfgrass species in Guiyang areas of evaluation on adaptability. Of which an ecological indicators - heat resistance of the laboratory preliminary study.The results are as follows:1,4 turfgrass from sowing to emerge and the time required for the species level, perennial ryegrass emergence fastest, followed by tall fescue, creeping bentgrass, Kentucky bluegrass slowest. Turfgrass in the same period of seedlings and turf growth rate after differences turfgrass in the seedling stage or turf growth rate after different. Tall fescue and ryegrass turf natural height relatively high, and all turfgrass varieties are different. Kentucky bluegrass.Bentgrass texture of the smallest leaves followed by perennial ryegrass, tall fescue leaf texture of the rough. All varieties of lawn between the density differences, Performance of the peak Wang, the garden, Kentucky.Lawn coverage reaction lawn coverage is the number of surface, the experiment showed bluegrass, creeping bentgrass coverage than ryegrass, Tall fescue is better. Lawn renewable response to the growth of the lawn speed and resistance to adopt the best analysis of ryegrass, tall fescue times, creeping bentgrass,blue grass slowest. Turfgrass color (genetic color) show ryegrass, tall fescue high chlorophyll content, appearance and performance consistency. All turfgrass species uniformity significant difference between. Comprehensive data above appearance, Gray Comprehensive Assessment System methods of turfgrass quality obtained : Wang peak, Goalkeepers, Kentucky, Reebok, Fire Phoenix GT, prince regent. Red rock, and other relations with the greatest number of species closest to the quality standards of the best.2,Select several varieties of turfgrass laboratory thermal analysis : Turfgrass varieties of relative water content increases as the temperature decreased, and there are differences between the two species. Relative permeability of the membrane as the temperature increases gradually, all varieties significant difference. Turfgrass the proline content with the increase of temperature rise, all varieties significant difference. Soluble sugar content increases as the temperature has risen in all varieties significant difference. When the temperature chlorophyll will degrade, so as the temperature increases chlorophyll content with the lower, all varieties significant difference. Used five scores on eight different turfgrass varieties of thermal comprehensive evaluation Final analysis of the thermal performance ranking is:peak Wang, the Millennium heyday, Portland, aspirin SHIKEWEI, Mo Site, the prince regent, Lexus, tiger.