• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bioenergy research >Biochar as a Substitute for Vermiculite in Potting Mix for Hybrid Poplar
【24h】

Biochar as a Substitute for Vermiculite in Potting Mix for Hybrid Poplar

机译：生物炭替代Hybrid树混合盆栽Ver石中的ul石

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

The purpose of this study was to evaluate biochar as a substitute for vermiculite in potting mixes for unrooted vegetative cuttings of hybrid poplar as represented by the clone ‘NM6’ (Populus nigra L. × Populus suaveolens Fischer subsp. maximowiczii A. Henry). We compared three treatments (peat moss (control), peat moss mixed with vermiculite, and peat moss mixed with biochar) at three times (pre-experiment, pre-fertilizer, and post-fertilizer). The biochar and vermiculite mixes had significantly higher cation exchange capacity (CEC) and pre-experiment exchangeable K than the control. Trees grown in the biochar and vermiculite mixes had significantly higher shoot K than the control at pre-fertilizer and post-fertilizer and significantly higher shoot and total biomass at post-fertilizer. The biochar mix was also associated with lower root biomass and higher shoot/root biomass ratio than the vermiculite mix at post-fertilizer. Vector analysis indicated that all treatments were deficient in N at pre-fertilizer, and the control was also deficient in K at pre-fertilizer and post-fertilizer. Linear regression confirmed that shoot biomass was strongly correlated (R2 = 0.97) with N and K uptake (in addition to initial cutting diameter), also, root biomass was strongly correlated (R2 = 0.96) with potting mix CEC (in addition to shoot biomass). Luxury consumption of K at pre-fertilizer indicates that the increases in shoot and total biomass observed with the biochar and vermiculite treatments arise from this nutrient being “pre-loaded” in both mixes. We conclude that biochar provides benefits equivalent to vermiculite in terms of key nutrient availability and total biomass productivity.
机译：这项研究的目的是评估生物炭作为pot杂混合物中ver石的替代品，以克隆“ NM6”（黑杨（Populus nigra L.×Populus suaveolens Fischer subsp。maximowiczii A. Henry））为代表的无根杂种杨木无性繁殖期。我们比较了三种处理方法（实验前，施肥前和后施肥）的三种处理方法（青苔（对照），泥煤与ver石混合，泥炭与生物炭混合）。与对照相比，生物炭和than石混合物具有显着更高的阳离子交换容量（CEC）和实验前可交换钾。在生物炭和ver石混合物中生长的树木在施肥前和施肥后具有比对照更高的芽K，在施肥后显着更高的芽和总生物量。生物炭混合物还具有比post肥混合后的root石混合物更低的根生物量和更高的枝/根生物量比。载体分析表明，所有处理在施肥前都缺氮，而对照在施肥前和施肥后也缺钾。线性回归证实，枝条生物量与氮和钾的吸收量（除初始切割直径外）密切相关（R2 = 0.97），根系生物量与盆栽混合CEC（枝条生物量外）也高度相关（R2 = 0.96） ）。在预肥中奢侈地消耗钾表明，使用生物炭和ver石处理时观察到的苗和总生物量的增加是由于两种混合物中都“预装”了这种养分。我们得出的结论是，就关键养分的可获得性和总生物量生产力而言，生物炭提供的益处与ver石相当。

著录项

  • 来源
    《Bioenergy research》 |2014年第1期|120-131|共12页
  • 作者

    William L. Headlee; Catherine E. Brewer; Richard B. Hall;

  • 作者单位

    1.Department of Natural Resource Ecology and Management Iowa State University 339 Science II Ames IA 50011-3221 USA;

    2.Center for Sustainable Environmental Technologies Iowa State University Biorenewables Research Laboratory Ames IA 50011 USA 3.Department of Chemical Engineering New Mexico State University P.O. Box 30001 MSC 3805 Las Cruces NM 88033 USA;

    1.Department of Natural Resource Ecology and Management Iowa State University 339 Science II Ames IA 50011-3221 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biochar Biomass Cation exchange capacity Fertilizer Populus Pyrolysis;

    机译：生物炭生物质阳离子交换容量化肥杨树热解;

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