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应用生态学报 ›› 1999, Vol. 10 ›› Issue (2): 183-185.

• 研究论文 • 上一篇    下一篇

双氰胺对碳酸氢铵在土壤中氮素转化的影响

商照聪, 高子勤   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1998-01-14 修回日期:1998-10-28 出版日期:1999-03-25 发布日期:1999-03-25
  • 通讯作者: 高照聪,男,25岁,硕士,工程师,主要从事土壤生态研究,发表论文多篇.
  • 基金资助:

    中国科学院农业重大支持项目

Effect of dicyandiamide on nitrogen transformation of ammonium bicarbonate in soil

Shang Zhaocong, Gao Ziqin   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1998-01-14 Revised:1998-10-28 Online:1999-03-25 Published:1999-03-25

摘要: 采用室内培养试验方法,研究了双氰胺对碳酸氢铵中的铵态氮在土壤中动态变化的影响。结果表明,无论是碳铵与双氰胺的机械混施,还是含双氰胺的长效碳铵,在抑制铵态氮硝化产生硝态氮的同时对氨挥发也有一定的抑制作用,使土壤在更长的时间内保持更高的铵态氮含量,并对碳铵施入后土壤的酸碱化强度起到了缓冲作用。添加双氰胺不但提高了碳铵的氮肥利用率,还减少了肥料氮素损失.

关键词: 碳酸氢铵, 双氰胺, 硝化抑制剂, 蝉花, ISSR, 地方病, 遗传结构

Abstract: Incubation studies on the effect of dicyandiamide (DCD) on NH4+-N dynamics of ammonium bicarbonate (AB) in soil show that whether mechanical mixed with AB or being a component of slow releasing AB,DCDinhibits the nitrification of NH4+-N and decreased the ammonium volatilization, which made soil preserve more NH4+-N in a longer period and buffered the intensity of soil acidification or alkalization after ABapplication.Adding DCDcould increase the utility efficiency of AB,and decrease its nitrogen losses.

Key words: Ammonium bicarbinate, Dicyandiamide, Nitrification inhibitor, ISSR, Isaria cicadae, enzootic, genetic structure