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首页> 外文期刊>Bioenergy research >Multilocation Corn Stover Harvest Effects on Crop Yields and Nutrient Removal
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Multilocation Corn Stover Harvest Effects on Crop Yields and Nutrient Removal

机译：多地点玉米秸秆收获对作物产量和养分去除的影响

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摘要

Corn (Zea mays L.) stover was identified as an important feedstock for cellulosic bioenergy production because of the extensive area upon which the crop is already grown. This report summarizes 239 site-years of field research examining effects of zero, moderate, and high stover removal rates at 36 sites in seven different states. Grain and stover yields from all sites as well as N, P, and K removal from 28 sites are summarized for nine longitude and six latitude bands, two tillage practices (conventional vs no tillage), two stover-harvest methods (machine vs calculated), and two crop rotations {continuous corn (maize) vs corn/soybean [Glycine max (L.) Merr.]}. Mean grain yields ranged from 5.0 to 12.0 Mg ha−1 (80 to 192 bu ac−1). Harvesting an average of 3.9 or 7.2 Mg ha−1 (1.7 or 3.2 tons ac−1) of the corn stover resulted in a slight increase in grain yield at 57 and 51 % of the sites, respectively. Average no-till grain yields were significantly lower than with conventional tillage when stover was not harvested, but not when it was collected. Plant samples collected between physiological maturity and combine harvest showed that compared to not harvesting stover, N, P, and K removal was increased by 24, 2.7, and 31 kg ha−1, respectively, with moderate (3.9 Mg ha−1) harvest and by 47, 5.5, and 62 kg ha−1, respectively, with high (7.2 Mg ha−1) removal. This data will be useful for verifying simulation models and available corn stover feedstock projections, but is too variable for planning site-specific stover harvest.
机译：玉米（Zea mays L.）秸秆被认为是纤维素生物能源生产的重要原料，因为农作物的种植面积很大。本报告总结了239个站点年的现场研究，调查了七个不同州的36个站点的零，中，高秸秆去除率的影响。总结了九个经度和六个纬度带，所有耕作的产量和所有28个地点的N，P和K去除量，两种耕作方式（常规耕作与非耕作），两种耕种方式（机械耕作与计算耕作） ，以及两次轮作{连续玉米（玉米）与玉米/大豆[Glycine max（L.）Merr。]}。平均谷物产量在5.0到12.0 Mg ha-1（80到192bu.ac-1）之间。玉米秸秆平均收获3.9或7.2 Mg ha-1（1.7或3.2吨ac-1），分别导致57％和51％的谷物产量略有增加。当不收获秸秆时，免耕谷物的平均免耕产量明显低于传统耕作，但不收集秸秆。在生理成熟期和联合收获期之间收集的植物样品显示，与未收获秸秆相比，氮，磷和钾的去除量分别增加了24、2.7和31 kg ha-1，中等（3.9 Mg ha-1）收获去除率分别为47、5.5和62 kg ha-1，去除率高（7.2 Mg ha-1）。此数据对于验证模拟模型和可用的玉米秸秆原料预测很有用，但对于规划特定于站点的秸秆收获而言，该数据太可变了。

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  • 来源
    《Bioenergy research》 |2014年第2期|528-539|共12页
  • 作者

    Douglas L. Karlen; Stuart J. Birrell; Jane M. F. Johnson; Shannon L. Osborne; Thomas E. Schumacher; Gary E. Varvel; Richard B. Ferguson; Jeff M. Novak; James R. Fredrick; John M. Baker; John A. Lamb; Paul R. Adler; Greg W. Roth; Emerson D. Nafziger;

  • 作者单位

    1.Department of Soil Water and Climate University of Minnesota S229 Soils Building 1529 Gortner Avenue St. Paul MN 55108 USA;

    2.USDA-ARS-Pasture Systems Watershed Management Research Unit (PSWMRU) Building 3702 Curtin Road University Park PA 16802 USA;

    3.Department of Plant Science Pennsylvania State University 407 Agricultural Sciences and Industries Building University Park PA 16802 USA;

    4.Crop Science Department University of Illinois W-301 Turner Hall 1102 S. Goodwin Urbana IL 61820 USA;

    5.Plant Science Department South Dakota State University Plant Science-Box 2140C Brookings SD 57006 USA;

    6.USDA-ARS-Agroecosystem Management Research Unit (AMRU) 117 Keim Hall Lincoln NE 68583-0938 USA;

    7.Department of Agronomy University of Nebraska–Lincoln 367 Keim Hall Lincoln NE 68583 USA;

    8.USDA-ARS-Costal Plains Soil Water Plant Research Center (CPSWPRC) 2611 West Lucas St. Florence SC 29501 USA;

    9.Clemson University Pee Dee Research Education Center (PDREC) 2200 Pocket Road Florence SC 29501 USA;

    10.USDA-ARS Soil and Water Management Research Unit 439 Borlaug Hall 1991 Upper Buford Circle St. Paul MN 55108 USA;

    11.Department of Soil Water and Climate University of Minnesota S229 Soils Building 1529 Gortner Avenue St. Paul MN 55108 USA;

    12.USDA-ARS-Pasture Systems Watershed Management Research Unit (PSWMRU) Building 3702 Curtin Road University Park PA 16802 USA;

    13.Department of Plant Science Pennsylvania State University 407 Agricultural Sciences and Industries Building University Park PA 16802 USA;

    14.Crop Science Department University of Illinois W-301 Turner Hall 1102 S. Goodwin Urbana IL 61820 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Bioenergy Sustainable feedstock production Nutrient removal;

    机译：生物能源可持续原料生产营养去除;

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