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Agronomic and Environmental Impacts of Giant Reed (Arundo donax L.): Results from a Long-Term Field Experiment in Hilly Areas Subject to Soil Erosion

机译:巨型芦苇(Arundo donax L.)的农业和环境影响:长期遭受土壤侵蚀的丘陵地区的田间试验结果

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摘要

Of the various biomass crops, one of the most promising for bioenergy or biochemical production is giant reed (Arundo donax L.): It is tolerant to a wide range of environmental stresses and can therefore be cultivated on marginal lands which cannot be used for traditional food crops. An open field experiment was carried out in a soil subjected to accelerated erosion so as to evaluate the agronomic and environmental impact of giant reed during the first 9 years of cultivation. In a low-input cropping system, the crop gave an interesting biomass yield and gross income when grown on marginal hilly lands in southern Italy affected by climatic constraints and accelerated erosion. Its cultivation had favourable effects on environmental quality, thanks to the improvement in soil fertility (soil organic matter and N increase), mitigation of climate change (C storage in the soil) and reduction in soil loss by erosion (reducing soil erodibility and increasing vegetation cover). Winter harvest was found to be more advisable because it reduced biomass moisture and N content, thus improving biomass quality (fewer problems in storage and industrial use) and cropping system sustainability (higher N return to the soil and hence less need for N fertilization).
机译:在各种生物质作物中,最有前途的生物能源或生化生产方法之一是巨型芦苇(Arundo donax L.):它能耐受各种环境压力,因此可以在不能用于传统农业的边际土地上耕种。粮食作物。在遭受加速侵蚀的土壤中进行了露天试验,以评估在种植的前9年中巨型芦苇的农艺和环境影响。在低投入的种植系统中,当在受气候限制和加速侵蚀影响的意大利南部边缘丘陵地带上种植时,该作物产生了可观的生物量产量和总收入。由于土壤肥力的改善(土壤有机质和氮的增加),气候变化的缓解(土壤中的碳存储)和侵蚀所致的土壤流失减少(减少土壤可蚀性和增加植被),其种植对环境质量产生了有利影响。覆盖)。人们发现冬季收获更为可取,因为它减少了生物质的水分和氮的含量,从而改善了生物质的质量(在存储和工业使用中较少的问题)和耕作制度的可持续性(较高的氮返回土壤并因此减少了对氮肥的需求)。

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  • 来源
    《Bioenergy research》 |2015年第1期|415-422|共8页
  • 作者单位

    1.Department of Agriculture University of Naples Federico II Via Università 100 80055 Portici Naples Italy;

    1.Department of Agriculture University of Naples Federico II Via Università 100 80055 Portici Naples Italy;

    1.Department of Agriculture University of Naples Federico II Via Università 100 80055 Portici Naples Italy;

    1.Department of Agriculture University of Naples Federico II Via Università 100 80055 Portici Naples Italy;

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  • 正文语种 eng
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  • 关键词

    Energy crops Poliannual crops Soil loss Soil carbon Soil nitrogen;

    机译:能源作物多年生作物土壤流失土壤碳土壤氮;

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