...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Silva Fennica >Black spruce seedling growth response in controlled organic and organic-mineral substrates
【24h】

Black spruce seedling growth response in controlled organic and organic-mineral substrates

机译：黑色云杉幼苗生长反应在受控的有机和有机矿物基材中

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the boreal forest of eastern Canada, a large proportion of black spruce (Picea mariana [Mill.] Britton, Sterns & Poggenb.) stands are affected by paludification. Edaphic conditions that are created by paludification processes, including an abundance of microsites with high moisture and low nutrient contents, hinder forest regeneration. Disturbance of paludified sites by mechanical soil preparation (MSP) reduces organic layer thickness, while generating a range of substrates for regeneration establishment. Yet, little information is available regarding the effects of these substrates on tree growth. Our objective was to determine the effect of organic, mineral and organo-mineral substrates that are created following MSP of a paludified site on the growth and root development of black spruce seedlings in a semi-controlled environment. We demonstrated that substrate exerted a significant effect on seedling growth and foliar concentrations of N, P and K. Increase in height and diameter were respectively greatest on clay (mineral) and mesic substrates. Substrate effects did not affect total biomass increases or final root biomass. Foliar nutrients (N, P, K) were relatively high in seedlings that were established on mesic substrates and relatively low for those established on clay substrates. To ensure successful seedling establishment, we recommend the application of MSP techniques that expose organic-mesic substrates on sites that are susceptible to paludification.
机译：在加拿大东部的北部森林中，一部大比例的黑色云杉（Picea Mariana [Mill。] Britton，Sterns＆Poggenb。）立场受到卑鄙的影响。通过繁琐过程产生的辅助条件，包括具有高水分和低营养物质的大量微量，妨碍森林再生。通过机械土壤制备（MSP）对血吸部位的扰动减少有机层厚度，同时产生一系列用于再生建立的基材。然而，关于这些基材对树生长的影响很少的信息。我们的目的是确定在半控制环境中对普化的位点MSP产生的有机，矿物质和有机矿物质底物的作用。我们证明基材对幼苗生长和叶酸浓度的植物浓度施加显着影响，P和K的增加程度和直径分别是最大的粘土（矿物）和浅缘。底物效应不会影响总生物质增加或最终根生物量。叶面营养物（n，p，k）在薄膜底物上建立的幼苗和对粘土基材的那些相对较低。为确保成功的苗木建立，建议使用揭露有机浅底物的MSP技术在易受悬垂的位置。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号