• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Identifying strategies for enhancing switchgrass quality for use as a bioenergy feedstock.
【24h】

Identifying strategies for enhancing switchgrass quality for use as a bioenergy feedstock.

机译：确定提高柳枝quality用作生物能源原料的质量的策略。

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 United States has set a goal for integrating biofuels into the nation's energy portfolio by 2022. Declining energy supplies and issues concerning energy independence and adverse environmental consequences have increased interest in developing bioenergy. Renewable bioenergy could be provided by high-yielding crops such as switchgrass (Panicum virgatum L.). The successful growth of the bioenergy industry will depend not only on harvesting switchgrass with high yield but with good quality. Few, however, have intensively studied the changes that occur in quality during the growing season. A field plot study on an established stand of a lowland cultivar planted in 2006 was carried out. A total of 13 harvests were taken at different dates in a one-cut system in 2011 and certain quality characteristics like nutrient concentration (N, P, K, Ca, Mg), ash and moisture content were measured. In addition, relationships between these variables and climatic conditions (rainfall and temperature) were determined. Overall, the variables studied declined significantly throughout the growth period. These quality indicators and dry weight also showed little or no correlation with rainfall or temperature throughout the harvest period. The highest quality switchgrass was observed when switchgrass harvest was delayed. For all of the quality characteristics studied, however, earlier harvests were not significantly different from the final harvest date indicating that switchgrass grown in Middle Tennessee may have an earlier and longer harvest window than what is currently recommended. Based on our data and depending on the quality characteristic/nutrient, switchgrass may be harvested earlier than the current recommendation (after Nov. 1 or killing frost) by 2 to 17 weeks allowing farmers greater flexibility.
机译：美国设定了到2022年将生物燃料纳入其国家能源组合的目标。能源供应的下降以及与能源独立性和不利的环境后果有关的问题使人们对开发生物能源的兴趣增加。可通过高产作物如柳枝（（Panicum virgatum L.）提供可再生的生物能源。生物能源行业的成功发展将不仅取决于收获高产量的柳​​枝but，而且还要获得高质量的柳枝gra。但是，很少有人深入研究生长期内品质的变化。对2006年种植的低地品种成熟林分进行了田间田间研究。在2011年，一站式系统在不同的日期总共收获了13个收成，并测量了某些质量特征，例如营养物浓度（N，P，K，Ca，Mg），灰分和水分。此外，还确定了这些变量与气候条件（降雨和温度）之间的关系。总体而言，所研究的变量在整个生长期显着下降。这些质量指标和干重也与整个收获期的降雨或温度几乎没有关联。当柳枝harvest收获推迟时，观察到最高质量的柳枝switch。但是，对于所研究的所有质量特征，较早的收获与最终的收获日期没有显着差异，这表明田纳西州中部生长的柳枝may的收获时间可能比目前建议的早和长。根据我们的数据并根据质量特征/营养素，柳枝switch的收获时间可能比当前建议早（11月1日或杀死霜冻后）2至17周，使农民更具灵活性。

著录项

  • 作者

    Allison, Abimbola.;

  • 作者单位

    Tennessee State University.;

  • 授予单位 Tennessee State University.;
  • 学科 Alternative Energy.;Agriculture Soil Science.;Agriculture Plant Culture.
  • 学位 M.S.
  • 年度 2013
  • 页码 178 p.
  • 总页数 178
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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