践踏胁迫对马尼拉草坪的影响

每天以人工和践踏器践踏马尼拉草坪,探讨不同践踏天数和践踏强度对马尼拉草坪的影响。结果表明:每天践踏5~10次,对马尼拉草坪草的影响较小,每天践踏20~30次,可使草坪草叶片长度缩短25%,干重减少35%,密度减少50%,盖度下降40%,草坪质量严重恶化;践踏15、30和60 d可使马尼拉草坪盖度分别下降10.2%、17.5%和47.3%,密度分别下降23.1%、32.4%和51.9%。每天践踏10次以下对草坪的自然恢复比较有效。每天人工践踏5~15次与践踏器每天践踏1~5个来回对草坪的影响基本一致。

Effect of different trampling intensities on manilagrass

Manilagrass was trampled by 4 trampling intensities in 3 courses.The results showed that the trampling intensity with 5 or 10 times one day have little effect on Manilagrass.The trampling intensity with 20 and 30 times one day can cause Manilagrass leaf shorten 25%,cut down the weight of leaf 35%,cut down the density 50%,drop the cover rate 40%,which will deteriorate the turfgrass quality severity.After being trampled 15 days,30 days and 60days,the length of Manilagrass leaf will be shorten 11.5%,28.5% and 34.6%,cover rate will be dropped 10.2%,17.5% and 47.3%,the density will be dropped 23.1%,32.4% and 51.9%.The spontaneousness renew is efficient only to the turfgrass trampled less than 10 times one day,and the course of being trampled is less than 15 days.The effects to the Manilagrass of 5 times and 15 times one day of people's trample is the same as the 2 times and 10 times one day of traffic simulator's trample.