Nitrogen dynamics of crop and soil subjected to different water and nitrogen inputs, including daily irrigation and steady-state fertilization measurements and modelling

Sammanfattning

Major carbon and nitrogen fluxes through crop and soil were studied in a series of field experiments. Barley, winter wheat, a grass mixture cut for hay and the energy crop reed canary-grass (Phalaris arundinacea) were studied. The treatments ranged from drought to daily irrigation/fertilization with high doses of water and nitrogen. Crop biomass and nitrogen dynamics above and below ground and incident light as well as soil temperature, moisture and mineral N content were monitored. Litter decomposition experiments were also performed in the field. The results were used to parameterize, validate and improve a set of soil/plant simulation models. Selected experimental results and experiences gained from the water, C and N budgeting and modelling work are presented.

Nyckelord

cereals; clay soil; grass ley; roots; simulation modelling

Publicerad i

Plant and Soil
1996, volym: 181, nummer: 1, sidor: 13-17
Utgivare: Springer Verlag (Germany)

SLU författare

• Andrén, Olof

  • Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
    

• Kätterer, Thomas

  • Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
    

• Pettersson, Roger

  • Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
    

• Flink, Malin

  • Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
    

• Hansson, Lotta

  • Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Markvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1007/BF00011286

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/44541