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首页> 外文期刊>土壤圈（英文版） >Aging Effects of Organic and Inorganic Fertilizers on Phosphorus Fractionation in a Calcareous Sandy Loam Soil
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Aging Effects of Organic and Inorganic Fertilizers on Phosphorus Fractionation in a Calcareous Sandy Loam Soil

机译：有机和无机肥料对钙质砂质壤土中磷分级分离的影响

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摘要

In most arid and semiarid soils,naturally occurring phosphorus (P) is a major yield-limiting plant nutrient.In this study,to investigate the effects of organic (OP) and inorganic P (IP) sources on P fractionation,a calcareous sandy loam alkaline soil was fertilized with OP and IP fertilizers at low (80 mg P kg-1 soil) and high (160 mg P kg-1 soil) application rates.Three combinations of OP and IP (i.e.,75％ OP + 25％ IP,50％ OP + 50％ IP,and 25％ OP + 75％ IP) were applied at low and high application rates,respectively,followed by soil aging for 21 d.Soil samples were collected after 1,2,3,7,and 21 d and subjected to sequential extraction to analyze soluble and exchangeable,Fe-and Al-bound,Ca-bound,and residual P fractions.The soluble and exchangeable P fraction significantly increased up to 24.3％,whereas the Ca-bound fraction decreased up to 40.7％ in the soils receiving 75％ OP + 25％ IP and 50％ OP + 50％ IP,respectively,compared with the control (receiving no P fertilizer).However,the transformation of P fractions was influenced by aging time.Addition of P sources caused instant changes in different P fractions,which then tended to decline with aging time.Change in soil pH was the limiting factor in controlling P availability.At high application rate,the OP source significantly increased soil P availability compared with the IP source with soil aging.Depending on P fractionation,a proper combination of OP and IP fertilizers,as long-term slow and instant P-releasing sources for plant uptake,respectively,may be a sustainable strategy to meet crop P requirements in the arid and semiarid soils.
机译：在大多数干旱和半干旱土壤中，天然存在的磷（P）是限制产量的主要植物养分。本研究旨在研究有机（OP）和无机P（IP）源对钙质砂质壤土P分馏的影响。在低（80 mg P kg-1土壤）和高（160 mg P kg-1土壤）施用量下，用OP和IP肥料对碱性土壤施肥。OP和IP的三种组合（即75％OP + 25％IP） 50％OP + 50％IP和25％OP + 75％IP）分别以低和高施用量施用，随后土壤老化21 d。分别在1,2,3,7，并在第21 d进行顺序萃取，分析可溶和可交换的，Fe和Al结合的，Ca结合的和残留的P分数。可溶和可交换的P分数显着增加至24.3％，而Ca结合的分数下降与对照（不施用磷肥）相比，在分别接受75％OP + 25％IP和50％OP + 50％IP的土壤中高达40.7％。磷的含量受老化时间的影响。磷源的添加导致不同磷组分的瞬时变化，然后随着老化时间的增加而下降。土壤pH的变化是控制磷有效性的限制因素。与土壤老化的IP源相比，OP源显着增加了土壤P的利用率。取决于P分级，适当地组合OP和IP肥料，分别作为长期缓慢和即时的P释放源用于植物的吸收，可能是一种在干旱和半干旱土壤中满足作物P需求的可持续策略。

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  • 来源
    《土壤圈（英文版）》 |2018年第6期|873-883|共11页
  • 作者

    Munir AHMAD; Mahtab AHMAD; Ahmed H.EL-NAGGAR; Adel R.A.USMAN; Adel ABDULJABBAR; Meththika VITHANAGE; Jamal ELFAKI; Abdulelah AL-FARAJ; Mohammad I.AL-WABEL;

  • 作者单位

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Department of Soil Science, Faculty of Agriculture, Ain Shams University, Cairo 11241 Egypt;

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Department of Soils and Water, Faculty of Agriculture, Assiut University, Assiut 71526 Egypt;

    Industrial Psychology, College of Education, King Saud University, Riyadh 11451 Saudi Arabia;

    Chemical and Environmental Systems Modeling Research Group, Institute of Fundamental Studies, Kandy 20000 Sri Lanka;

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Agriculture Engineering Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

    Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451 Saudi Arabia;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
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