Effects of supplemental nitrogen application on physiological characteristics dry matter and nitrogen accumulation of winter rapeseed (Brassica napus L.) under waterlogging stress

摘要

Influence of duration of waterlogging and nitrogen application on the content of chlorophyll of rapeseed leaves under pot and field experiments. Values are means of three replicates ±SE. Small alphabetical letters above mean denote the significant differences among treatment at P ≤ 0.05. N1, 0 kg ha ; N2, 30 kg ha ; N3, 60 kg ha ; and N4,90 kg ha . D0, refers to without waterlogging; D6, refers to waterlogging for 6 days and D9, refers to waterlogging for 9 days.