Table 3 N accumulation and accumulation ratio of ‘Wufengyou 286’ under heavy nitrogen application before and after drought in different periods
Growth stage | Treatment | N contents (%) | N accumulation (mg) | Above-ground N accumulation (mg) | ||||
|---|---|---|---|---|---|---|---|---|
Panicle | Stem | Leaf | Panicle | Stem | Leaf | |||
Heading stage | CK | 0.16a | 0.34a | 0.50a | 55.64a | 118.23a | 173.55a | 347.75a |
NBD | 0.14b | 0.32a | 0.54a | 40.91b | 88.45b | 149.78b | 279.09b | |
NAD | 0.14b | 0.34a | 0.52a | 24.48c | 60.35c | 93.20c | 178.03c | |
Maturity stage | CK | 0.73a | 0.15b | 0.12b | 365.22a | 74.69ab | 58.55b | 498.38a |
NBD | 0.67ab | 0.18ab | 0.15b | 226.25b | 62.87b | 51.37b | 340.49b | |
NAD | 0.57b | 0.21a | 0.22a | 252.44ab | 90.62a | 96.65a | 439.71ab | |