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新型吡唑类化合物DL-1的硝化抑制效应初探

孙志梅1,2;梁文举1;武志杰1;左秀锦3;史云峰1,2   

  1. 1中国科学院沈阳应用生态研究所,沈阳 110016;2中国科学院研究生院,北京 100039;3大连大学环境与化学工程学院,大连 116622

  • 收稿日期:2005-04-11 修回日期:2005-08-11 出版日期:2006-02-18 发布日期:2006-02-18

Inhibitory effect of pyrazole compound DL-1 on soil nitrification:A preliminary study

SUN Zhimei1,2;LIANG Wenju1;WU Zhijie1;ZUO Xiujin3;SHI Yunfeng1,2   

  1. 1Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;2Graduate School of Chinese Academy of Sciences,Beijing 100039,China;3Department of Environmental and Chemical Engineering,Dalian University,Dalian 116622,China

  • Received:2005-04-11 Revised:2005-08-11 Online:2006-02-18 Published:2006-02-18

摘要: 以国内外应用较为广泛的硝化抑制剂双氰胺(DCD)为参比对象,采用室内培养方法,对新型吡唑类化合物DL-1的硝化抑制效应进行初步探讨.结果表明,DL-1对土壤中铵的氧化过程具有显著的抑制效应,前3周的硝化抑制率可达70%以上,且硝化抑制能力在第14天至28天最强.与等量DCD相比,施用量为(NH4)2SO4氮量1.0%的DL-1在14、21和28 d使土壤中的NO3--N含量分别下降 26.23%、33.27%和23.31%;与不加抑制剂的对照处理相比,土壤NO3--N含量则分别下降了71.12%、69.10%和55.14%.当DL-1用量为(NH4)2SO4氮量的2。0%时,土壤的硝化作用受到了更强烈的抑制,到培养第90天试验结束,土壤中的NO3--N含量始终维持在较低水平.

关键词: SUCROS, 农田林网, 产量生态学, 夏玉米

Abstract: The study with soil incubation test under constant temperature and humidity showed that compared with DCD,DL-1 could significantly inhibit the oxidation of soil ammonium.In the first 3 weeks of incubation,DL-1 had an inhibitory effect of >70% on soil nitrification,with the best effect during 14~28 d of incubation.On the 14,21,and 28 d of incubation,DL-1with its dosage being 1.0 % of (NH4)2SO4-N decreased the soil NO3--N content by 26.23%,33.27% and 23.31%,respectively,compared with the same dosage of DCD,and by 71.12%,69.10% and 55.14%,respectively,compared with no inhibitors applied.When the dosage of DL-1 accounted for 2.0% of applied N,soil nitrification was strongly inhibited,and soil NO3--N content remained at a lower level till to the end (90 d) of incubation.

Key words: SUCROS, Windbreaks, Production ecology, Summer corn