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AGRICULTURAL soils are the major anthropogenic source of N_2O, and temperature is one of the importantenvironmental factors controlling production and emission of N_2O from soil. This work focuses on the influence of temperature on diurnal and seasonal variations of N_2O flux from subtropical agricultural soil.This was done by seasonal measuring N_2O flux and soil temperature at a corn-rape rotation, a soybeanwinter wheat rotation and a fallow field (106°66’E, 26°50’N, 1140 m a.s.1.), at Soil and Fertilizer Institute, Guizhou Academy of Agricultural Sciences. Available nitrogen content of above three fields wasapproximately 0.71%, organic matter content 10.6-12.0 g/kg, clay (<2 μm) content 25.6%-30.0%, and pH was about 7.5 throughout the whole experiment. Measuring period was between 20 Mar.
AGRICULTURAL soils are the major anthropogenic source of N 2 O, and temperature is one of the importantenvironmental factors controlling production and emission of N 2 O from soil. This work focuses on the influence of temperature on diurnal and seasonal variations of N 2 O flux from subtropical agricultural soil.This was done by seasonal measuring N 2 O flux and soil temperature at a corn-rape rotation, a soybean winter wheat rotation and fallow field (106 ° 66’E, 26 ° 50’N, 1140 m as 1.), at Soil and Fertilizer Institute, Available nitrogen content of above three fields wasapproximately 0.71%, organic matter content 10.6-12.0 g / kg, clay (<2 μm) content 25.6% -30.0%, and pH was about 7.5 throughout the whole experiment. Measuring period was between 20 Mar.