新型吡唑类化合物DL-1的硝化抑制效应初探  

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

作　　者：孙志梅[1,2] 梁文举[1] 武志杰[1] 左秀锦[3] 史云峰[1,2] 

机构地区：[1]中国科学院沈阳应用生态研究所 [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

出　　处：《应用生态学报》2006年第2期201-204,共4页Chinese Journal of Applied Ecology

基　　金：国家高新技术研究发展计划项目(2004AA246020);中国科学院知识创新工程重要方向项目(KZCX3-SW-445);中国科学院知识创新工程重大资助项目(KZCX1-SW-19).

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28d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.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-lwith 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 tiU to the end （90 d） of incubation.

关 键 词：吡唑类化合物 DL-1 DCD NH4^+ -N NO3^- -N表观硝化率 硝化抑制率 

分 类 号：TQ463.53[化学工程—制药化工]