北京地区早园竹竹鞭生长规律研究

Rhizome Growth Law of Phyllostachys propinqua in Beijing

对北京地区早园竹竹鞭的生长规律进行了调查研究。结果表明：早园竹竹鞭生长量总体上随着竹鞭年龄的增大而减小;在一条完整的鞭系上,空芽数所占比例最大,笋芽所占比例最小,空芽所占比例随着鞭龄增大而增加;早园竹竹鞭主要分布在0~10 cm的表土层中,随着土壤深度增加,竹鞭分布逐渐减少;竹林开花后,竹鞭生长量明显减小,且竹鞭仅分布于0~10 cm的土层中;开花竹林土壤中的有效磷含量明显降低。

An investigation was carried out for rhizome growth law of Phyllostachys propinqua in Beijing. The results showed that the rhizome growth volume of Ph. propinqua decreases along with the increase of its age; the quantity of air bud takes largest share while the quantity of bamboo shoot has the least share along a complete scourge system, and the share of air bud increases with the increasing rhizome age; rhizomes of Ph. propinqua are mainly distributed on the surface soil layer at 0-10 cm deep, and its distribution gradually decreases with the increasing soil depth; the growth volume of rhizomes tangibly reduces after the bamboo blooms, and the rhizomes are only distributed at the soil layer of 0-10 cm; the available phosphorus amount obviously shrinks at the soil where flowered bamboo grow.