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Studies on Effects of Physical Cooling on Heat-tolerance of Kentucky Blue Grass

JIANG Peng-jun,SUN Yan(Department of Grass Science,China Agricultural University,Beijing 100094,China)  
Glasshouse has been used to simulate the high temperature environment in Beijing in summer,and we tested several external indexes(green leaves/plant and growth height) and internal indexes(water content,relative electric conductivity and chlorophyll content).According to the comparison of data we can tell the differences in heat-tolerance of the six treatments and find out the best method for cooling.The result showed that the treatments with a canopy raised the heat-tolerance of Kentucky Blue Grass.
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