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首页> 外文期刊>Fuel >Assessments of Class F fly ashes for amelioration of soil acidity and their influence on growth and uptake of Mo and Se by canola
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Assessments of Class F fly ashes for amelioration of soil acidity and their influence on growth and uptake of Mo and Se by canola

机译：评估F级粉煤灰对土壤酸度的改善及其对双低油菜籽对Mo和Se吸收和生长的影响

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摘要

Coal fly ash can be used to ameliorate productivity constraints in agricultural soils, but their efficacy still remains highly variable. To ascertain the capacity of Class F fly ashes to modify pH of acidic soils, and their effects on the yield and uptake of molybdenum (Mo) and selenium (Se) by canola (Brassica napus L), we applied two acidic and two alkaline Class F ashes at rates equivalent to 0, 12, 36, and 108 Mg/ ha to the top layer (0-10 cm) of 100 cm long intact cores of acidic sandy clay and clay loam soils. Only the alkaline ash which had the highest calcium carbonate equivalent (2.43%) increased the pH of the top 10 cm of the sandy clay soil. However, this ash was also highly saline and when applied at ≥36 Mg/ha it increased the electrical conductivity in the top soil layer. Increases in soil pH as a result of alkaline ash addition also elevated concentrations of Se in the plant shoot The ashes with high concentrations of Mo and Se generally increased uptake of these elements in the plant shoot and/or seed. When these ashes were applied at 108 Mg/ha they increased the concentrations of these elements in the treated topsoil.
机译：粉煤灰可用于缓解农业土壤中的生产力限制，但其功效仍然变化很大。为了确定F类粉煤灰改变酸性土壤pH的能力及其对油菜（甘蓝型油菜）对钼（Mo）和硒（Se）产量和吸收的影响，我们应用了两种酸性和两种碱性以100厘米长的完整完整酸性酸性砂质粘土和壤土壤土的顶层（0-10厘米），以0、12、36和108 Mg / ha的速率粉煤灰。仅具有最高碳酸钙当量（2.43％）的碱性灰分才增加了砂质粘土顶部10 cm的pH。然而，这种灰烬也是高盐分的，当以≥36Mg / ha施用时，它增加了表层土壤的导电性。添加碱灰的结果是土壤pH值的升高，也使植物芽中硒的含量升高。高浓度的Mo和Se的灰烬通常会增加植物芽和/或种子中这些元素的吸收。当这些灰烬以108 Mg / ha的量施用时，它们会增加处理过的表土中这些元素的浓度。

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  • 来源
    《Fuel》 |2010年第11期|P.3498-3504|共7页
  • 作者

    V. Manoharan; I.A.M. Yunusa; P. Loganathan; R. Lawrie; C.G. Skilbeck; M.D. Burchett; B.R. Murray; D. Eamus;

  • 作者单位

    Department of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnDepartment of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia Plant Functional Biology and Climate Change Cluster, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnSoil and Earth Sciences, Institute of Natural Resources, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand;

    rnPlant Functional Biology and Climate Change Cluster, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnDepartment of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnDepartment of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnDepartment of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia Plant Functional Biology and Climate Change Cluster, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

    rnDepartment of Environmental Sciences, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia Plant Functional Biology and Climate Change Cluster, University of Technology, Sydney, P.O. Box 123, Broadway NSW 2007, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    canola; coal fly ash; molybdenum; selenium; soil acidity;

    机译：双低油菜籽粉煤灰钼;硒;土壤酸度;

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