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首页> 外文期刊>土壤圈（英文版） >Interaction of NPK Fertilizers During Their Transformation in Soils:I.Dynamic Changes of Soil pH
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Interaction of NPK Fertilizers During Their Transformation in Soils:I.Dynamic Changes of Soil pH

机译：氮磷钾肥在土壤转化过程中的相互作用：I。土壤pH的动态变化

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摘要

Dynamic changes of soil pH as influenced by ammonium sulfate (AS), monocalcium phosphate (MCP),potassium chloride (KCl) and their interaction in soils were evaluated in incubation experiments. Applyingthese fertilizers significantly reduced soil pH values in all cases and followed sequences of AS ＞ MCP ＞KCl, MCP ＞ KCl ＞ AS and KCl ＞ AS ＞ MCP for the paddy, calcareous and red soils, respectively. TheAS-induced reduction of pH in the three soils followed the sequence of red soil ＞ paddy soil ＞ calcareous soil,while in MCP and KCl systems the reduction of pH followed the sequences of calcareous soil ＞ paddy soil ＞red soil and red soil ＞ calcareous soil ＞ paddy soil, respectively. The interactions of the NPK fertilizers on pHwere significant. MCP plus KCl or MCP plus AS reduced pH values more than the fertilizers applied solelyin the paddy soil, but AS partly counteracted the effect of MCP on pH in the 1 d sample of the calcareoussoil. The effect of MCP on pH was trivial when MCP was applied in combination with KCl or AS in the redsoil. When applied in combination with AS, KCl did not affect soil pH initially, but suppressed the reductionof pH at the later incubation stage, which was related to inhibition of nitrification by KCl in the soils.
机译：在培养实验中评估了硫酸铵（AS），磷酸一钙（MCP），氯化钾（KCl）对土壤pH值的动态变化及其相互作用。在所有情况下，施用这些肥料均会显着降低土壤的pH值，并分别针对稻田，石灰性和红壤，分别按AS＞ MCP＞ KCl，MCP＞ KCl＞ AS和KCl＞ AS＞ MCP的顺序进行处理。在三种土壤中，AS诱导的pH降低遵循红壤＞稻田＞石灰质土壤，而在MCP和KCl体系中，pH降低遵循钙质土壤＞稻田＞红壤和红壤＞石灰质土壤＞稻田土壤。氮磷钾肥料与pH的相互作用非常显着。 MCP加KCl或MCP加AS降低的pH值要比仅在水稻土上施用的肥料降低更多，但AS抵消了MCP对钙质土壤1 d样品中pH的影响。当在红壤中将MCP与KCl或AS组合使用时，MCP对pH的影响微不足道。当与AS结合使用时，KCl最初不会影响土壤的pH值，但会在随后的培养阶段抑制pH的降低，这与KCl抑制土壤中的硝化作用有关。

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  • 来源
    《土壤圈（英文版）》 |2003年第3期|257-262|共6页
  • 作者

    WANG HUOYAN; ZHOU JIANMIN; CHEN XIAOQIN; LI SHOUTIAN; DU CHANGWEN; DONG CAIXIA;

  • 作者单位

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

    Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 China;

  • 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 chi
  • 中图分类 土壤学;
  • 关键词

    nitrogen; pH; phosphorus; potassium;

    机译：氮;pH;磷;钾;
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