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林业科学 ›› 2011, Vol. 47 ›› Issue (9): 62-68.doi: 10.11707/j.1001-7488.20110911

• 论文 • 上一篇    下一篇

容器基质育苗中保水剂对白蜡生长及养分和干物质积累的影响

刘方春, 马海林, 马丙尧, 杜振宇, 段春华   

  1. 山东省林业科学研究院 山东省森林植被生态修复工程技术研究中心 济南 250014
  • 收稿日期:2010-09-16 修回日期:2011-01-19 出版日期:2011-09-25 发布日期:2011-09-25
  • 通讯作者: 马海林

Effect of Super Absorbent Polymer on Container Seedling Growth of Fraxinus chinensis and the Nutrient and Dry Matter Accumulation

Liu Fangchun, Ma Hailin, Ma Bingyao, Du Zhenyu, Duan Chunhua   

  1. Shandong Academy of Forest Shandong Engineering Research Center for Ecological Restoration of Forest Vegetation Jinan 250014
  • Received:2010-09-16 Revised:2011-01-19 Online:2011-09-25 Published:2011-09-25

摘要:

以白蜡为供试植物,利用容器育苗研究保水剂对白蜡生长和养分吸收的影响,并通过方差分析、多重比较及回归分析探讨白蜡干物质和养分的动态积累特征。结果表明: 同单施速效肥料相比,添加保水剂对白蜡前期生长影响不大,但促进中后期苗高及地径的生长。白蜡干物质和养分动态积累均符合Logistic生长回归模型,但不同处理方程的特征值差异很大。同单施速效肥料处理相比,加入保水剂推迟白蜡干物质积累的盛末期,干物质快速积累的总时间延长7天,积累的最大速率提高6.62%。同时,延长白蜡氮和钾的快速积累时间,并使其最大积累速率分别提高16.61%和7.52%,对磷的快速积累时间影响较小。在不加入速效养分的情况下,基质中直接加入保水剂对白蜡苗高和地径的生长、干物质和营养元素的积累影响较小。同单施速效肥料处理相比,加入保水剂使白蜡根、茎和叶的生物量分别增加15.71%,7.13%和3.46%,氮和钾的含量分别增加8.33%和4.24%,氮、磷和钾的总养分吸收量分别增加16.56%,8.25%和12.75%。在没有养分加入的情况下,加入保水剂对白蜡养分含量及养分吸收量影响不大。由此可见,容器育苗基质中保水剂同速效肥料混合施用,可促进白蜡中后期的生长,提高白蜡干物质、氮和钾的快速积累时间和最大积累速率,增加干物质的积累量和总养分吸收量,而基质中直接加入保水剂对白蜡生长及养分吸收积累影响很小。

关键词: 保水剂, 白蜡容器苗, 速效肥料, 养分积累, 干物质积累

Abstract:

To explore the utilization of super absorbent polymer in container seedling culture, we investigated effects of super absorbent polymer in culture media on growth and nutrient uptake of container seedlings of Fraxinus chinensis in this study. Additionally, dynamic accumulationof the dry matter and nutrient was studied by means of variance analysis, multiple comparisons and regression analysis methods. Results showed that super absorbent polymer addition had no effect on the early growth stage of F. chinensis, but increased the height and ground diameter during later growth stage, compared with readily-available fertilizer treatment only. In different treatments, dynamic accumulation of dry matter and nutrient in F. chinensis seedlings could be well described by Logistic equation with different feature indexes. Compared with readily-available fertilizer treatment only, super absorbent polymer addition delayed the terminal time and extended the time of dry matter quick accumulation by seven days. Besides, the maximum increase rate of dry matter accumulation was increased by 6.62%. At the same time, super absorbent polymer addition prolonged the duration of nitrogen and potassium quick accumulation, and the maximum increase rate was increased by 16.61% and 7.52%, respectively. Super absorbent polymer had little effect on the time of phosphorus quick accumulation. Root, stem and leaf dry weight of F. chinensis was increased by 15.71%, 7.13% and 3.46%, respectively in super absorbent polymer addition than in readily-available fertilizer. Besides, application of super absorbent polymerontent increased the content of nitrogen and potassium by 8.33% and 4.24%, and increased the uptake amount of nitrogen, phosphorus and potassium by 16.56%, 8.25% and 12.75%, respectively. On the condition of non-nutrient, application super absorbent polymerontent in container media had no effect on the nutrient content and uptake of F. chinensis. In general, application of super absorbent polymer in readily-available fertilizer improved the later growth of F. chinensis and prolonged quick accumulation period of dry matter, nitrogen and potassium. At the same time, it increased the dry matter accumulation and nutrient uptake. However, on the condition of non-nutrient, super absorbent polymer had no effect on the growth and nutrient uptake of F. chinensis.

Key words: super absorbent polymer, Fraxinus chinensis container seedling, readily available fertilizer, nutrient accumulation, dry matter accumulation

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