Carbon, nitrogen and phosphorus accumulation and partitioning, and C:N:P stoichiometry in late-season rice under different water and nitrogen managements.

ABSTRACT: Water and nitrogen availability plays an important role in the biogeochemical cycles of essential elements, such as carbon (C), nitrogen (N) and phosphorus (P), in agricultural ecosystems. In this study, we investigated the seasonal changes of C, N and P concentrations, accumulation, partitioning, and C:N:P stoichiometric ratios in different plant tissues (root, stem-leaf, and panicle) of late-season rice under two irrigation regimes (continuous flooding, CF; alternate wetting and drying, AWD) and four N managements (control, N0; conventional urea at 240 kg N ha(-1), UREA; controlled-release bulk blending fertilizer at 240 kg N ha(-1), BBF; polymer-coated urea at 240 kg N ha(-1), PCU). We found that water and N treatments had remarkable effects on the measured parameters in different plant

SUBMITTER: Ye Y 

PROVIDER: S-EPMC4081737 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature