Hangar
发表于 2025-3-28 14:36:08
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
发表于 2025-3-28 21:54:55
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
发表于 2025-3-29 01:23:53
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.
champaign
发表于 2025-3-29 03:12:23
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.
剧本
发表于 2025-3-29 08:39:18
http://reply.papertrans.cn/39/3808/380795/380795_45.png
割公牛膨胀
发表于 2025-3-29 13:45:39
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.
发源
发表于 2025-3-29 18:48:32
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
发表于 2025-3-29 21:10:05
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
Functional
发表于 2025-3-29 23:55:05
http://reply.papertrans.cn/39/3808/380795/380795_49.png