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结果 71-80 的 333
Residual effects of N fertilization on soil-water chemistry and ground vegetation in a Swedish Scots pine forest
1998
Nohrstedt, H.O. (SkogForsk, Uppsala Science Park, S-751 83 Uppsala (Sweden))
Spatial variation in annual nitrogen deposition in a rural region in Switzerland
1998
Eugster, W. | Perego, S. | Wanner, H. | Leuenberger, A. | Liechti, M. | Reinhardt, M. | Geissbuhler, P. | Gempeler, M. | Schenk, J. (University of Bern, Institute of Geography, Hallerstrasse 12, CH-3012 Bern (Switzerland))
The nitrogen reduction programme in the Federal Republic of Germany
1998
Eichler, F. | Schulz, D. (Federal Environmental Agency, Bismarckplatz 1, D-14 193 Berlin (Germany))
Mixed farming systems as a way towards a more efficient use of nitrogen in European Union agriculture
1998
Oomen, G.J.M. | Lantinga, E.A. | Goewie, E.A. | Hoek, K.W. van der (Department of Plant and Crop Sciences, Group of Biological Farming Systems, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen (Netherlands))
Mitigation of nitrous oxide emission from dairy farming systems
1998
Velthof, G.L. | Beusichem, M.L. van | Oenema, O. (Nutrient Management Institute NMI, Wageningen Agricultural University, P.O. Box 8005, 6700 EC Wageningen (Netherlands))
Risk of damage to crops in the direct neighbourhood of ammonia sources
1998
Eerden, L.J.M. van der | Visser, P.H.B. de | Dijk, C.J. van (Research Institute for Agrobiology and Soil Fertility, Research unit Plant and Biosphere, P.O. Box 14, 6700 AA Wageningen (Netherlands))
Towards integrated national modelling with particular reference to the environmental effects of nutrients
1998
Alkemade, J.R.M. | Grinsven, J.J.M. van | Wiertz, J. | Kros, J. (National Institute of Public Health and the Environment, Bilthoven (Netherlands))
Response of a zooplankton community to insecticide application in experimental ponds: a review and the implications of the effects of chemicals on the structure and functioning of freshwater communities
1998
Hanazato, T. (Suwa Hydrobiological Station, Shinshu University, 5-2-4 Kogandori, Suwa, Nagano 392-0027 (Japan))
Nitrogen efficiency in global animal production
1998
Hoek, K.W. van der (National Institute of Public Health and the Environment (RIVM), PO Box 1, NL-3720 BA Bilthoven (Netherlands))
EMEP eulerian model for atmospheric transport and deposition of nitrogen species over Europe
1998
Jonson, J.E. | Bartnicki, J. | Olendrzynski, K. | Jakobsen, H.A. | Berge, E. (Meteorological Synthesizing Centre - West of EMEP, The Norwegian Meteorological Institute, P.O. Box 43, Blindern N-0313 Oslo (Norway))
