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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (25): 24-27.doi: 10.11924/j.issn.1000-6850.2014-0511

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

不同树龄桐花树根系生长和根系活力的比较研究

刁俊明 曾宪录 陈桂珠   

  • 收稿日期:2014-03-03 修回日期:2014-05-08 出版日期:2014-09-05 发布日期:2014-09-05
  • 基金资助:
    广东省科技计划项目 “红树植物桐花树治理城乡河涌污染的技术研究与应用” (2010B031900044)。

A Comparative Study of Root Growth and Root Activity of Different Ages of Aegiceras corniculatum

  • Received:2014-03-03 Revised:2014-05-08 Online:2014-09-05 Published:2014-09-05

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摘要： 为探索树龄对根系生长和根系活力的影响，以1年龄和2年龄桐花树为试验材料，对不同树龄桐花树(Aegiceras corniculatum)根系生长和根系活力进行比较研究。结果表明：处理360天后，2种树龄的桐花树年生物量均有增加，2年龄单株生物量是1年龄的2.45倍。根生物量在单株生物量中所占的比重，随着树龄的递增呈减小趋势。1年龄根数、根长和根粗的年增量均显著大于2年龄的；两者的根系含水量均呈先升后降的趋势，2年龄根系活力较1年龄的相对稳定些。试验表明，不同树龄的桐花树根系生长和根系活力有显著差异。

关键词: 元宝枫, 元宝枫, 无性系, 叶素色, 可溶性糖, 花色素苷

Abstract: The root growth and root activity of 1 a and 2 a Aegiceras corniculatum plants were compared to investigate the effect of plant age on the root growth characteristics. The results showed that, after 360 d of growth, the single plant biomass of 2 a plants Aegiceras corniculatum was 2.45 times that of the 1 a plants. The proportion of the root biomass to the whole plant biomass decreased with the increase of plant age. The annual increase of root number, root length and root diameter of 1 a plants were significantly larger than those of 2 a plants; the root water content showed a trend of first rising then declining; the 2 a plants had relatively more stable root activity than the 1 a plants. Overall, significant differences existed between different ages of Aegiceras corniculatum in the root growth and activity.