Abstract: Affects of mowing freqency and stubble height on the quality of kentucky bluegrass/tall fescue tulf established in 1993 at Scientic Garden of China Agricultural Univenity were studied during 1996-1997.Total 6 mowing treatments were applied to kentucky bluegrass/tall fescue turf by 3 mowing stubble heights × 2 mowing frequencies.The mowing stubble heights were 8, 6 and 4 cm, and frequencies were once and twice per week.The results showed that tnrf grasses growth rate could be incropsed by lower stubble height in both of the two mowing frequencies.A bigger tiller diameter could be obtained by forwing twice per week than that of once per week.Considering turf growth rate, tiller density, tiller diameter and management cost, 6 cm stubble height and once mowing per week are better for kentucky bluegrass/tall fescue turf.Good turf uniformity and lower number of reproductive tillers could be obtained by two mowings per week and the lowest stubble, and good turf greenness could be obtained by low mowing frequency and higher stubble treatments for kentucky bluegrass/tall fescue turf.There were no significant difference of underground biomass between any mowing frequency and stubble height treatments during mowing year and next year.

Key words: Kentucky bluegrass/tall fescue turf, Stubble height, Mowing frequency, Turf quality

摘要： 作者于1996～1997年在中国农业大学科学园区对建植三年的草地早熟禾/高羊茅草坪进行修剪高度和修剪频率对草坪质量指标影响的试验,结果表明,每周修剪-次和两次,分别留茬8、6、4cm,其中低茬比高茬修剪能增加草地早熟术/高羊茅草坪的生长速度。每周修剪两次比-次更能促进草坪草分蘖增加直径,综合评定草坪的生长速度,分蘖密度和分蘖粗细,以及管理费用等因素,草地早熟禾/高羊茅以每周修剪-次,留茬6cm为好。从颜色评定草地早熟禾/高羊茅草坪的美观程度,则应以高茬修剪为好,从整齐度衡量草坪的质量则以低茬修剪为好。修剪对草地早熟禾/高羊茅草坪当年和翌年地下生物量的影响在各处理之间均不显著。

关键词: 草地早熟禾/高羊茅草坪, 修剪高度, 修剪频率, 草坪质量