| 遮荫和光照对缺苞箭竹发育的影响 |
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| 引用本文： | 廖志琴.遮荫和光照对缺苞箭竹发育的影响[J].竹子研究汇刊,1993(4). |
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| 作者姓名： | 廖志琴 |
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| 作者单位： | 四川林科院 成都 |
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| 摘 要： | 据观察,缺苞箭竹通常在迹地和疏林地比郁闭度大的林地衰老快、开花多,说明缺苞箭竹发育与林地遮荫度有关,为了证实这一现象,在全光照(sun)、林地部分遮荫(约为全光照下光量的50％)和深度遮荫(约为全光照下光量的2％)的条件下,分植零星开花竹丛,观察其发育变化。结果表明:在深度遮荫的条件下,原有的花穗不开放,花芽不继续发育,未花枝也不继续发育成花枝,竹丛中也不再出现新的开花植株,而未花竹和发笋量则逐年增加;在全光照和部分遮荫的条件下,原有的花穗很快开放,特别是全光照条件下,花茅和未花枝继续发育成花穗和花芽的速度更快,而且新的开花植株逐年增加,未花植株和发笋量逐年减少。结果也表明:光照时间和光照强度是控制缺苞箭竹开花的最明显的气象因子。
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| 关 键 词： | 缺苞箭竹 发育 林地的遮荫和光照 |
EFFECTS OF SHADE AND SUNLIGHT ON THE DEVELOPMENT OF FARGESIA DENUDATA |
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| Liao Zhiqin.EFFECTS OF SHADE AND SUNLIGHT ON THE DEVELOPMENT OF FARGESIA DENUDATA[J].Journal of Bamboo Research,1993(4). |
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| Authors: | Liao Zhiqin |
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| Abstract: | Observation showed that in general, Fargesia denudata in cutover and sparse forest takes old and blossomes more rapidly than that in densive canopy, this indicated that development of the bamboo relates to degree of the forest's sunshade. Experiment on plantation of oddflowering. bamboos in full sun, partial shade (50% of full sun, PSH) and deep shade (2% of full sun, DSH) showed that in the condition of DSH, spikelets are not blossom, flower buds and non-flowered branches do not continue to develop into new spikelet; flowered bamboos gradually die and fail to increase new flowering bamboos; shoots and nonflowered bamboo increase. In the conditions of PSH or sun, flower spikelets blossom more rapidly, especially under full sun, flower buds and non-flowered branches continue to develop into new spikelets and flower buds; new flowering bamboos increase but shoots and nonflowered bamboos decrease. This research also showed that light intensity and enduration are the most significant factors in controlling the flowering of Fargesia denudata. |
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| Keywords: | Fargesia denudata shade and sunlight of forest development |
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