植物生态学报 ›› 1997, Vol. 21 ›› Issue (1): 19-26.

• 论文 • 上一篇    下一篇

施肥对毛竹(Phyllostachys pubescens)竹笋生长的影响

李睿,M.J.A.,维尔格,钟章成   

  • 发布日期:1997-01-10
  • 通讯作者: 李睿 M

Influence of Fertilization on the Clonal Growth of Bamboo Shoots in Phyllostacachys pubescens

Li Rui, M.J.A.Werger and Zhong Zhangcheng   

  • Published:1997-01-10
  • Contact: Li Xuguang and Yu Fawen

摘要: 毛竹(Phyllostachys pubescens)为具有重要经济价值的高大乔木状竹种。本文通过完全随机化区组施肥试验,探讨了施肥量及施肥方式对毛竹竹笋生长的效应。结果表明:在毛竹林内施肥可使出笋数和活笋数提高3倍以上,但对竹笋(幼竹)的个体大小却几乎没有改良效果。竹笋的存活率基本上是恒定的,不随施肥量的改变而改变。当地下茎(竹鞭)穿越养分分布不均的环境时,竹笋能有选择地大量长于养分丰富的地段而避开养分贫乏的地段。另一方面,跨越于有利地段和不利地段的竹(笋)株间有明显的生理整合作用,而且这种生理整合在显著增加了长在不利地段的竹笋数(高收益)的同时,基本上没有减少长在有利地段的竹笋数(低耗费)。9m×9m的样方已足以观测到显著的施肥效果,这比传统的毛竹研究中使用的1亩的样方面积效率要高。在竹林培育方面,不均匀施肥如带状或点状施肥要比均匀施肥效率高。

Abstract: Phyllostachys pubescens is a tree-like giant bamboo with important economic values. Based on a fertilization experiment designed in a way of completely randomized blocks, we investigated influences of different dosage and way of fertilization on the Clonal growth of new bamboo shoots in P. pubescens. It was shown that the mean number of bamboo shoots emerging and surviving per plot might be significantly increased up to more than three times by the fetilization, although the individual size was not significantly improved. The mean survival rates of bamboo shoots per plot were almost the same in all treatments. The bamboo may be able to selectively place more new shoots in the favourable sites than in unfavourable sites when it encountered a heterogeneous environment. On the other hand, there existed clear evidence that physiological integration occurred between new shoots developing in the poor sites and older shoots established in the good sites. Using plots of 9m × 9m, fertilization showed significant effects. Therefore, it is not necessary to use plots of 1mu (667m2) which were traditionally used. It is more profitable to fertilize patchily than evenly for increasing production.