A novel method for building of traffic tolerance experiment of turf grass

Abstract

Abstract: A novel method for investigating traffic tolerance of turf grass was built on the basis of the invention of a portable traffic simulator and a new approach for traffic treatment. Four traffic treatments (non-traffic, light traffic, moderate traffic and severe traffic) were used in the method for the experiment of traffic tolerance of perennial ryegrass (Lolium perenne), and five indexes, including visual rating, coverage, chlorophyll content, leaf water content and fresh weight of aboveground biomass of turf grass, were measured at 1, 3, 7, 10, 14 and 21 day after traffic treatments. Results showed that five indexes of perennial ryegrass showed different changes under different degree of traffic stress. The value of all indexes declined obviously with increasing intensity of traffic under all kinds of traffic treatments except that chlorophyll content was higher than CK (non-traffic) under light traffic. Values of all indexes began to increase after 3 days from traffic treatment and kept rising with increasing days. Under light traffic and moderate traffic, the value of all indexes reached to CK level at 7 d and 14 d after traffic treatments, respectively. However, the value of all indexes under severe traffic did not reach to CK level at 21 d after traffic treatments. Correlation between visual rating and coverage, chlorophyll content, leaf water content and fresh weight of aboveground biomass were analyzed and highly close relationships were found at 7 d after traffic treatments (P<0.01). The correlation coefficients were the highest at 14 d after traffic treatments. Therefore, 14 days after traffic treatments may be an important period for physiological regulation of perennial ryegrass in response to traffic stress. The results can provide theoretical basis for further in-depth research about the mechanism of traffic tolerance of turf grass.

CLC Number:

S812
S688.4

XIAO Bo, SONG Gui-long, XU Li-xin, HAN Lie-bao. A novel method for building of traffic tolerance experiment of turf grass[J]. Acta Prataculturae Sinica, 2012, 21(5): 144-152.

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