Grain number responses to pre-anthesis dry matter and nitrogen in improving wheat yield in the Huang-Huai Plain.

ABSTRACT: Wheat yield components vary between different ecological regions and yield levels. Grain number responses to pre-anthesis dry matter (DM) and nitrogen (N) in increasing yield were always investigated in spike organs, neglecting the effect of non-spike organ nutrition or overall distribution. This paper determined the relationships between grain number and pre-anthesis DM and N in spike and non-spike organs under different yield levels, with using two sorts of field experiments (different water-nitrogen modes and cultivation management patterns) from 2012-2015 in Huang-Huai plain. The results indicated that improving yield under yield of <7500 kg ha^-1 depends on increasing grain number per spike (GNs) or spike number (SN) or both, increased yield under higher yield of >7500 kg ha

SUBMITTER: Duan J 

PROVIDER: S-EPMC5940900 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature