...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bioenergy research >Biomass Yield and Nutrient Removal Rates of Perennial Grasses under Nitrogen Fertilization
【24h】

Biomass Yield and Nutrient Removal Rates of Perennial Grasses under Nitrogen Fertilization

机译：施氮对多年生禾草生物量产量和养分去除率的影响

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

Perennial grasses may provide a renewable source of biomass for energy production. Biomass yield, nutrient concentrations, and nutrient removal rates of switchgrass (Panicum virgatum L.), giant miscanthus (Miscanthus x giganteus), giant reed (Arundo donax L.), weeping lovegrass [Eragrostis curvula (Shrad.) Nees], kleingrass (Panicum coloratum L.), and Johnsongrass (Sorghum halepense (L.) Pers.) were evaluated at four N fertilizer rates (0, 56, 112, or 168 kg N ha−1) on a Minco fine sandy loam soil in southern Oklahoma. Species were established in 2008 and harvested for biomass in winter of 2009 and 2010. Biomass yield (dry matter basis) did not show a strong relationship with N fertilizer rate (p = 0.08), but was affected by year and species interactions (p < 0.01). Weeping lovegrass and kleingrass produced 29.0 and 16.0 Mg ha−1 in 2009, but only 13.0 Mg ha−1 and 9.8 Mg ha−1 in 2010, respectively. Biomass yields of giant reed, switchgrass, and Johnsongrass averaged 23.3, 17.8, and 6.0 Mg ha−1, respectively. Giant miscanthus established poorly, producing only 4.7 Mg ha−1. Across years, giant reed had the highest biomass yield, 33.2 Mg ha−1 at 168 kg N ha−1, and the highest nutrient concentrations and removal rates (162 to 228 kg N ha−1, 23 to 25 kg P ha−1, and 121 to 149 kg K ha−1) among the grasses. Although giant reed demonstrated tremendous biomass production, its higher nutrient removal rates indicate a potential for increased fertilization requirements over time. Switchgrass had consistently high biomass yields and relatively low nutrient removal rates (40 to 75 kg N ha−1, 5 to 12 kg P ha−1, and 44 to 110 kg K ha−1) across years, demonstrating its merits as a low-input bioenergy crop.
机译：多年生禾草可为能源生产提供可再生的生物质资源。柳枝（（Panicum virgatum L.），巨型猕猴（Miscanthus x giganteus），巨型芦苇（Arundo donax L.），哭泣的禾草[Eragrostis curvula（Shrad。）Nees]，kleingrass（牛膝草）的生物量，养分浓度和养分去除率在俄克拉荷马州南部的Minco细砂质壤土上以四种氮肥用量（0、56、112或168 kg N ha-1）评价了Panicum coloratum L.）和Johnsongrass（高粱halepense（L.）Pers。） 。物种成立于2008年，并于2009年和2010年冬季收获生物量。生物量产量（以干物质为基础）与氮肥的施用率没有显着关系（p = 0.08），但受到年份和物种相互作用的影响（p < 0.01）。哭泣的爱情草和kleingrass在2009年分别产生29.0和16.0 Mg ha-1，但在2010年分别仅产生13.0 Mg ha-1和9.8 Mg ha-1。巨型芦苇，柳枝switch和约翰逊草的生物量平均分别为23.3、17.8和6.0 Mg ha-1。巨型猕猴的生长较差，仅产生4.7 Mg ha-1。多年以来，巨型芦苇的生物量最高，在168 kg N ha-1时为33.2 Mg ha-1，养分浓度和去除率最高（162至228 kg N ha-1、23至25 kg P ha-1以及草丛中的121至149 kg K ha-1）。尽管巨型芦苇显示出巨大的生物量产量，但其较高的养分去除率表明随着时间的推移潜在的施肥需求增加。柳枝across多年来一直具有较高的生物量产量和相对较低的养分去除率（40至75千克N ha-1、5至12千克P ha-1和44至110千克K ha-1），显示了其低优势投入生物能源作物。

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