Measurement of nitrous oxide emission dynamics from soil

A simple laboratory device which simulates environmental factors that affect N₂O emission from soil has been constructed． It is convenient to use it to observe the N₂O emission dynamics from soil cores while simulating some factors such as different fertilizer sources，management，temperature．and chemical inhibitors，etc．The detect limit was 2．5mg N₂O-N m^{-2．s-1 with maxinlum error about 10%, so it could be used for agricultural soils It was found that fertilizer source，fertilizer management and native soil type were preliminarily important factors on N₂O emission fluxes in some of our experiments．}