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首页> 外文会议>European biomass conference and exhibition;ETA-Florence Renewable Energies >BALING OF MISCANTHUS: THE EFFECT OF HARVEST TIME ON PRODUCTIVITY, CONSUMPTION AND BIOMASS LOSSES
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BALING OF MISCANTHUS: THE EFFECT OF HARVEST TIME ON PRODUCTIVITY, CONSUMPTION AND BIOMASS LOSSES

机译：蜜桔的打包：收割时间对生产力，消费量和生物量损失的影响

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摘要

Within the last few years Miscanthus has been shown as the most productive perennial grass underrndifferent climate conditions, resulting suited for biomass production both in northern and in southern countries ofrnEurope. Factors which may affect the final yield are soil texture, fertilization rate, water availability and harvest time.rnIn particular many authors stressed the fact that a late harvest, in the winter season, allows to obtain a better biomassrnquality (i.e. low moisture level and reduced ash content), even if considerable biomass losses could occur, in form ofrnleaves and tops, respect to the yields that could be obtained with an early harvest in autumn. On the other hand, earlyrnharvest poses the problem of high moisture levels, which makes the biomass unsuited for baling shortly after cut.rnThus the biomass requires to be left on the field for drying for a time span, between mowing and baling, that can varyrnfrom few to several days, depending on air temperature and rain. Within the LogistEC EU project, a set of field trialsrnwere conducted in order to assess the feasibly of early harvesting under different climate conditions, in Italy, Francernand UK. In Italy, a three-passage harvesting system, consisting in mowing, windrowing and baling, was adopted forrnearly harvest and compared with a conventional winter harvest, carried out with a single-passage system (mowingrnand baling in one operation) at the end of the winter. In both harvest systems tractor power, as well as machineryrntypes for mowing and baling were the same. Productivity, fuel consumption and biomass losses were measured.rnPreliminary results showed that fuel and operation times needed for the three passage system were significantlyrnhigher than for the single-passage system, while biomass losses were slightly lower in the early harvesting than in thernlate winter harvest. Our results allowed to conclude that early harvest, with the three-passages system, can help tornextend the harvesting season also to the autumn period, especially in those regions where seasonal air temperaturernallow to bale the biomass at proper moisture content, where the risk of wet winters is high, wherever cultivated areasrnare small and widespread within the single farm and in the case expected yields should be low.
机译：在过去的几年中，芒草被证明是在不同气候条件下生产力最高的多年生草，因此适合欧洲北部和南部国家的生物量生产。可能影响最终产量的因素包括土壤质地，施肥速度，水分利用率和收获时间。rn特别是，许多作者强调，冬季收获较晚，可以获得更好的生物质（即低水分含量和降低产量）。灰分），即使可能发生大量的生物量损失（相对于秋季早期收获所获得的产量而言，也以叶子和顶部形式）。另一方面，早收带来了水分含量高的问题，这使生物质不宜在切割后立即打包.rn因此，生物质需要在田间晾干一段时间，以在割草和打包之间进行干燥。几天到几天，取决于气温和雨水。在LogistEC欧盟项目中，在意大利，法国和英国进行了一系列田间试验，以评估在不同气候条件下早期收获的可行性。在意大利，早割采用了割草，割草和打包的三道次收获系统，与常规冬季收获相比，在收获期末采用单道系统（一次割草和打包）进行了收获。冬季。在两个收割系统中，拖拉机的动力以及割草和打包的机械类型都是相同的。初步结果显示，三通道系统所需的燃料和运行时间明显高于单通道系统，而早期收获期的生物量损失则比冬季收获时的生物量损失略低。我们的结果可以得出结论，采用三通道系统的早期收获可以帮助将收获季节延长到秋季，特别是在季节性气温不允许将生物质以适当的水分打包的那些地区，潮湿的风险很大。冬季高，在单个农场中任何面积较小且分布广泛的耕地，在这种情况下，预期单产应较低。

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  • 来源
  • 会议地点 Vienna(AT)
  • 作者

    G. Ragaglini; N. Yates; I. Shield; C. Tozzini; R. Villani; D. Sanchez;

  • 作者单位

    Institute of Life Sciences, Scuola Superiore Sant'Anna, via S. Cecilia - 56127 Pisa - Italy +39050883521, g.ragaglini@sssup.it;

    Rothamsted Research, Harpenden. AL5 2JQ UK nicola.yates@rothamsted.ac.uk;

    Rothamsted Research, Harpenden. AL5 2JQ UK;

    Institute of Life Sciences, Scuola Superiore Sant'Anna, via S. Cecilia - 56127 Pisa - Italy;

    Institute of Life Sciences, Scuola Superiore Sant'Anna, via S. Cecilia - 56127 Pisa - Italy;

    National Renewable Energy Centre (CENER) – Biomass Department C/ Ciudad de la Innovación 7, 31621 Sarriguren, Navarra. Tel: +34-948-25-28-00 dsanchez@cener.com;

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

    energy crops; biomass; harvesting; logistics;

    机译：能源作物;生物量;收获;物流;

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