Fertilizers, agronomy and N2O

被引:38
作者
Bockman, OC [1 ]
Olfs, HW [1 ]
机构
[1] Norsk Hydro AS, N-3901 Porsgrunn, Norway
关键词
agriculture; fertilizer; nitrogen loss; nitrous oxide;
D O I
10.1023/A:1009736327495
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
N2O is emitted from agricultural soils due to microbial transformation of N from fertilizers, manures and soil N reserves. N2O also derives from N lost from agriculture to other ecosystems: as NH3 or through NO3- leaching. Increased efficiency in crop N uptake and reduction of N losses should in principle diminish the amount of N2O from agricultural sources. Precision in crop nutrient management is developing rapidly and should increase this efficiency. It should be possible to design guidelines on good agricultural practices for low N2O emissions in special situations, e.g. irrigated agriculture, and for special operations, e.g. deep placement of fertilizers and manures. However, current information is insufficient for such guidelines. Slow-release fertilizers and fertilizers with inhibitors of soil enzymatic processes show promise as products which give reduced N2O emissions, but they are expensive and have had little market penetration. Benefits and possible problems with their use needs further clarification.
引用
收藏
页码:165 / 170
页数:6
相关论文
共 44 条
  • [1] [Anonymous], T 9 NITR WORKSH BRAU
  • [2] [Anonymous], AGR FERTILIZERS
  • [3] [Anonymous], 1994, 62 ECETOC
  • [4] [Anonymous], 1991, Farming, fertilizers, and the nitrate problem
  • [5] AUGUSTIN J, 1995, RESSOURCEN RECYCLING, P131
  • [6] Atmospheric gas concentrations over the past century measured in air from firn at the South Pole
    Battle, M
    Bender, M
    Sowers, T
    Tans, PP
    Butler, JH
    Elkins, JW
    Ellis, JT
    Conway, T
    Zhang, N
    Lang, P
    Clarke, AD
    [J]. NATURE, 1996, 383 (6597) : 231 - 235
  • [7] *BMELF, 1996, VER GRUNDS GUT FACHL
  • [8] Nitrous oxide emissions from fertilised grassland: A 2-year study of the effects of N fertiliser form and environmental conditions
    Clayton, H
    McTaggart, IP
    Parker, J
    Swan, L
    Smith, KA
    [J]. BIOLOGY AND FERTILITY OF SOILS, 1997, 25 (03) : 252 - 260
  • [9] SOURCES OF NITRIC-OXIDE AND NITROUS-OXIDE FOLLOWING WETTING OF DRY SOIL
    DAVIDSON, EA
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1992, 56 (01) : 95 - 102
  • [10] PROCESSES REGULATING SOIL EMISSIONS OF NO AND N2O IN A SEASONALLY DRY TROPICAL FOREST
    DAVIDSON, EA
    MATSON, PA
    VITOUSEK, PM
    RILEY, R
    DUNKIN, K
    GARCIAMENDEZ, G
    MAASS, JM
    [J]. ECOLOGY, 1993, 74 (01) : 130 - 139