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新型吡唑类化合物DL-1的硝化抑制效应初探
引用本文:孙志梅,梁文举,武志杰,左秀锦,史云峰.新型吡唑类化合物DL-1的硝化抑制效应初探[J].应用生态学报,2006,17(2):201-204.
作者姓名:孙志梅  梁文举  武志杰  左秀锦  史云峰
作者单位:1. 中国科学院沈阳应用生态研究所,沈阳,110016;中国科学院研究生院,北京,100039
2. 中国科学院沈阳应用生态研究所,沈阳,110016
3. 大连大学环境与化学工程学院,大连,116622
基金项目:国家科技攻关项目;中国科学院知识创新工程项目;中国科学院科研项目
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:吡唑类化合物  表观硝化率  硝化抑制率
文章编号:1001-9332(2006)02-0201-04
收稿时间:2005-04-11
修稿时间:2005-08-11

Inhibitory effect of pyrazole compound DL-1 on soil nitrification:A preliminary study
SUN Zhimei,LIANG Wenju,WU Zhijie,ZUO Xiujin,SHI Yunfeng.Inhibitory effect of pyrazole compound DL-1 on soil nitrification:A preliminary study[J].Chinese Journal of Applied Ecology,2006,17(2):201-204.
Authors:SUN Zhimei  LIANG Wenju  WU Zhijie  ZUO Xiujin  SHI Yunfeng
Institution:1.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China ;2 Graduate School of Chinese Academy of Sciences, Beijing 100039, China ; 3Department of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China
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-1 with 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.
Keywords:DL-1  DCD  NH4 -N  NO3--N
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