Titlebook: Gaseous Loss of Nitrogen from Plant-Soil Systems; J. R. Freney,J. R. Simpson Book 1983 Springer Science+Business Media Dordrecht 1983 evol

Hangar

The measurement of denitrification,ct of fertilizer N on the environment have spurred research on the development of field methods for measurement of denitrification loss (Rolston .. 1976, 1978, Focht 1978, Ryden .. 1978, 1979a,b, Denmead 1979, McKenney .. 1978, Matthias .. 1980).

PRISE

Micrometeorological methods for measuring gaseous losses of nitrogen in the field,gas at the soil or water surface is calculated from changes in gas concentration in an enclosure placed over the surface; and micrometeorological techniques in which the vertical flux density of the gas is measured in the free air above the surface.

制造

Fate of fertilizer nitrogen applied to wetland rice,ugh food for the vast Asian population. Unfortunately, N fertilizer, which is already a costly input for the rice farmer, is becoming more expensive in response to the rising cost of the oilbased feedstocks used in fertilizer production. It is therefore imperative that N fertilizer is used efficiently.

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Some Fragments of the Infowar Mailing Listween 10 and 30% of the applied N is commonly lost, most probably by gaseous loss mechanisms, since conditions were often not conducive to leaching. Denitrification is believed to account for most of this loss.

劇本

割公牛膨脹

Biological denitrification,ween 10 and 30% of the applied N is commonly lost, most probably by gaseous loss mechanisms, since conditions were often not conducive to leaching. Denitrification is believed to account for most of this loss.

發(fā)源

Chemodenitrification,om soils which are actively nitrifying. The nature of the processes which cause these losses is currently the subject of much investigation and speculation. There is evidence that nitrite produced by nitrifying or denitrifying microorganisms may react chemically to form gaseous N compounds (chemical denitrification).

Offensive

Book 1983nds for food and fibre by a rapidly expanding world population, and by a growing concern that increased land clearing, cultivation and use of both fertilizer and biologically fixed nitrogen can have detrimental effects on the environment. These include effects on water quality, eutrophication of sur

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