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[房宸翻译]一些关于一年生早熟禾开花的小事实

2013-10-22 15:08| 发布者: 周陆波| 查看: 954| 评论: 0|原作者: 房宸

摘要: 随着一年生早熟禾在俄亥俄州遍地开花,我想是时候为大家介绍一些有关这种草坪草开花特性的有趣事实了。一年生早熟禾将其地上部分生长量(干重)的4%-35%都用来生产种子。为了方便对比,其他一年生植物,比如荞麦,将 ...
作者:Karl Danneberger
翻译:房宸
来源:俄亥俄州立大学Buckeye Turf

 

随着一年生早熟禾在俄亥俄州遍地开花,我想是时候为大家介绍一些有关这种草坪草开花特性的有趣事实了。

  • 一年生早熟禾将其地上部分生长量(干重)的4%-35%都用来生产种子。为了方便对比,其他一年生植物,比如荞麦,将其地上生长量的20%-50%用来生产种子。
  • 在每平方米高尔夫果岭上,一年生早熟禾每年要产生150,000-650,000颗种子。其中大部分种子产生于五月到八月初。
  • 每年每平方米的一年生早熟禾草坪上将有大约75,000-225,00株分蘖会开花。
  • 在生长季,每月每平方米的一年生早熟禾草坪有大约100,000株分蘖会死亡。但是新植株很快就会填补死亡植株的空缺。所以要维护一年生早熟禾草坪,生长季时保持适宜生长的环境至关重要。
  • 一年生早熟禾的传播属于被动型,主要依靠人类(动物)活动和机械搬运。由于人类活动的原因,目前七个大洲都有一年生早熟禾分布。

http://buckeyeturf.osu.edu/index.php?option=com_content&id=486:some-facts-on-annual-bluegrass-flowering&Itemid=170
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原文
With annual bluegrass flowering across Ohio, I thought I would provide you with some facts on the flowering potential of this grass. (from: Lush, W.M. 1988. Journal of Applied Ecology 25:977-988.)

* Annual bluegrass uses 4 to 35% of its top growth (dry weight) for seed production. As a reference, annual plants like cereals invest 20 to 50% of their top growth for seed production.

* Annual seed production on a golf green is between 150,000 to 650,000 seeds per meter squared per year (177,000 to 767,000 seeds / square yard / year). The majority of this seed would be produced from May through early August.

* Approximately 75,000 to 225,000 tillers per meter squared per year flower (88,000 to 265,000 /square yard /year)

* During the growing season annual bluegrass tiller mortality is roughly 100,000 tillers per meter squared per month (118,000 tillers / square yard / month). Annual bluegrass has a strong potential for replacing dying tillers with new ones. Obviously sustaining favorable growth through the season is critical in maintaining annual bluegrass turf.

* Annual bluegrass dispersal is passive. The mechanism of dispersal is by human (animal) or equipment. Annual bluegrass has been found where human disturbance has occurred (all 7 continents).



Authors: Karl Danneberger


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