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Nitrogen and Phosphorus Fertilizer Effects on Establishment of Giant Miscanthus

机译:氮磷肥对巨型芒草建立的影响

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摘要

Research efforts have recently been increasing to evaluate giant miscanthus (Miscanthus × giganteus L.) as a bioenergy feedstock and to develop recommendations for efficient management practices. The objectives of this study were to evaluate effects of nitrogen (N) and phosphorus (P) fertilization on the yield and nutrient removal of giant miscanthus and the change in soil nutrient concentration during establishment of giant miscanthus in the Piedmont and Mountain Regions of North Carolina. Research sites were established at Mills River and Oxford, NC, in 2008 and 2009, respectively. Yield and tissue nutrient content were determined after senescence. Giant miscanthus produced biomass dry yields of up to 24 Mg ha−1 during the third growing season. Fertilization with 45 kg N ha−1 increased yield by 46 % in 2010 at Oxford, but did not affect yield at Oxford in 2009 or at Mills River from 2008 to 2010. Fertilization with 147 kg P ha−1 increased yield by 32 % in 2008 at Mills River, but did not affect yield in 2009 or 2010 at either site. Mehlich-3 P concentration in the upper 20 cm of soil decreased after initial P applications, with no changes in the 0 P control plots detected during this study. Giant miscanthus successfully established at Mills River and Oxford, NC with minimal N and P fertilizer inputs on soils with low initial P concentration.
机译:最近,人们加大了研究力度,以评估巨型猕猴(Miscanthus×giganteus L.)作为生物能源的原料,并为有效的管理方法提出建议。这项研究的目的是评估北卡罗莱纳州皮埃蒙特和山区建立氮肥和氮肥对巨型猕猴的产量和养分去除以及土壤养分浓度变化的影响。 。研究地点分别于2008年和2009年在米尔斯河和北卡罗来纳州牛津成立。衰老后测定产量和组织营养成分。在第三个生长季节,巨型猕猴产生的生物量干物质产量高达24 Mg ha-1。在牛津,2010年施用45 kg N ha-1的肥料使产量增加46%,但在2009年或2008-2010年期间不影响牛津的产量或2008年至2010年的Mills River的产量。在147 kg P ha-1的施肥条件下,2007年的产量增加32% 2008年位于米尔斯河(Mills River),但未影响2009年或2010年两个地点的单产。初次施用磷肥后,土壤上部20 cm中的Mehlich-3 P浓度降低,在此研究中未检测到0 P对照区的变化。在北卡罗来纳州的米尔斯河和牛津大学成功建立了巨型猕猴桃,在初始磷含量较低的土壤上,氮和磷的肥料投入最少。

著录项

  • 来源
    《Bioenergy research》 |2015年第1期|17-27|共11页
  • 作者单位

    1.Department of Soil Science North Carolina State University Raleigh NC 27695 USA;

    2.Department of Soil Science North Carolina State University 455 Research Drive Mills River NC 28759 USA;

    1.Department of Soil Science North Carolina State University Raleigh NC 27695 USA;

    3.Department of Horticultural Science North Carolina State University 455 Research Drive Mills River NC 28759 USA;

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

    Giant miscanthus Nutrient use Nitrogen Phosphorus Bioenergy crop production;

    机译:巨型水仙营养养分利用氮磷生物能源作物生产;

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