Table 3. Aboveground total dry weight (TDW) at maturity and harvest index of two inbred rice varieties under different nitrogen and sowing density treatments in 2017 and 2018.
| Variety | Density | Nitrogen | TDW at heading stage (g m−2) | TDW at maturity (g m−2) | Harvest index (%) |
|---|---|---|---|---|---|
| 2017 | |||||
| HHZ | LD | N0 | 520 ± 22c | 789 ± 244b | 51.1 ± 2.7a |
| LN | 750 ± 22b | 1025 ± 27a | 50.2 ± 1.6ab | ||
| HN | 867 ± 20a | 1134 ± 33a | 47.9 ± 2.8b | ||
| HD | N0 | 579 ± 16c | 775 ± 34c | 50.3 ± 1.9a | |
| LN | 790 ± 45b | 1260 ± 28b | 49.4 ± 2.3ab | ||
| HN | 910 ± 59a | 1391 ± 15a | 47.1 ± 2.3b | ||
| YNSM | LD | N0 | 580 ± 12c | 810 ± 43c | 51.0 ± 1.5a |
| LN | 870 ± 42b | 1204 ± 3b | 50.1 ± 2.4ab | ||
| HN | 931 ± 43a | 1144 ± 26a | 47.7 ± 2.4b | ||
| HD | N0 | 591 ± 21c | 821 ± 43c | 50.5 ± 2.1a | |
| LN | 896 ± 50b | 1341 ± 23b | 48.2 ± 2.4b | ||
| HN | 990 ± 22a | 1492 ± 20a | 46.2 ± 0.7c | ||
| 2018 | |||||
| HHZ | LD | N0 | 740 ± 26c | 798 ± 37c | 51.2 ± 2.7a |
| LN | 1242 ± 30b | 1208 ± 49b | 50.2 ± 1.3ab | ||
| HN | 1342 ± 41a | 1469 ± 19a | 47.8 ± 1.2b | ||
| HD | N0 | 730 ± 19c | 1068 ± 28c | 51.1 ± 2.3a | |
| LN | 1216 ± 54b | 1844 ± 65b | 49.6 ± 1.2ab | ||
| HN | 1300 ± 81a | 2045 ± 41a | 47.4 ± 2.4b |