Nitrogen in a winter wheat cropping system
نویسندگان
چکیده
2.1 NITROGEN AND IT ROLE IN THE PLANT.................................................................................... 3 2.2 THE PLANT NITROGEN STATUS ................................................................................................ 4 2.3 PLANT AVAILABLE NITROGEN ................................................................................................. 5 2.3.1 Root interception ............................................................................................................. 5 2.3.2 Mass flow......................................................................................................................... 5 2.3.3 Diffusion .......................................................................................................................... 6 2.3.4 The mean total net influx of the root ............................................................................... 8 2.3.5 Root induced changes in the rhizosphere ........................................................................ 9 2.3.6 Nitrogen mineralization ................................................................................................ 10
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