Study on differences in nitrogen nutrition between winter wheat varieties in response, uptake to nitrogen and associated depletion of soil nitrate
Zhou ShunLi; Zhang FuSuo; Wang XingRen
Scientia Agricultura Sinica 35(6): 667-672
ISSN/ISBN: 0578-1752 Accession: 003950642
The response, N uptake and associated depletion of soil nitrate of six winter wheat varieties were studied using the nitrogen response index (NRI), which is the determined value of nitrogen-fertilized treatment divided by the determined value of a non-N fertilizer treatment. Results indicated that the NRI differences for dry matter production, N concentration and N uptake rate were significant among varieties even after N fertilizer addition. The NRI of straw was higher than that of grain.