Table 3.
Yield components relative to N application rate and planting density in inbred and hybrid rice varieties at Jingzhou. Different lowercase letters indicate significant differences at P < 0.05 (n = 3).
| Variety | N | D | Panicles | Skikete panicle−1 | Seed setting precentage(%) | 1000-grain weight(mg) |
|---|---|---|---|---|---|---|
| HHZ | N0 | D1 | 214.5d | 118.5d | 90.3a | 20.2a |
| D2 | 231.8 cd | 104.5d | 90.5a | 20.2a | ||
| D3 | 262.9c | 128.7d | 89.4ab | 19.8ab | ||
| N1 | D1 | 345.1b | 167.8c | 89.5ab | 19.5abc | |
| D2 | 354.2ab | 188.6abc | 88.4abc | 19.5abc | ||
| D3 | 397.2a | 196.5abc | 83.5abcd | 18.9cde | ||
| N2 | D1 | 354.7ab | 198.5abc | 87.6abc | 19.3bc | |
| D2 | 374.6ab | 180.5bc | 85.2abcd | 18.6def | ||
| D3 | 396.3a | 180.8bc | 81.4bcd | 18.2f | ||
| N3 | D1 | 376.2ab | 215.2a | 80.1cd | 19.0cd | |
| D2 | 390.4ab | 199.8ab | 78.2d | 18.2ef | ||
| D3 | 395.6a | 190.4abc | 78.7d | 18.0f | ||
| YNSM | N0 | D1 | 240.3a | 123.5b | 90.8a | 20.4a |
| D2 | 239.5c | 117.9b | 90.3a | 20.2ab | ||
| D3 | 261.0c | 123.5b | 90.2a | 20.2ab | ||
| N1 | D1 | 332.8d | 197.5a | 87.4abc | 20.1abc | |
| D2 | 342.7cd | 189.8a | 84.6abcd | 19.8abc | ||
| D3 | 394.4abc | 192.6a | 84.3abcd | 19.5abcd | ||
| N2 | D1 | 353.3bcd | 210.5a | 87.8ab | 19.5abcd | |
| D2 | 371.2abcd | 191.5a | 84.5abcd | 19.1abcd | ||
| D3 | 401.6ab | 195.5a | 81.8bcd | 18.8bcd | ||
| N3 | D1 | 377.1abcd | 219.2a | 81.5bcd | 18.8cd | |
| D2 | 390.6abc | 201.2a | 80.7cd | 18.4cd | ||
| D3 | 409.3a | 190.6a | 78.5d | 18.3d | ||
| Y-LY900 | N0 | D1 | 151.6cef | 339.1ab | 79.0ab | 20.7b |
| D2 | 147.3cf | 319.7ab | 80.8ab | 21.1ab | ||
| D3 | 212.0abc | 221.5 cd | 83.5a | 21.6ab | ||
| N1 | D1 | 198.3bcd | 260.4abcd | 61.3e | 22.2a | |
| D2 | 200.8bc | 254.3bcd | 72.3bcd | 20.8b | ||
| D3 | 242.1ab | 209.2d | 70.9bcde | 21.5ab | ||
| N2 | D1 | 168.8cdef | 344.4a | 63.0de | 21.9ab | |
| D2 | 187.5cde | 338.6ab | 66.5de | 21.5ab | ||
| D3 | 257.3a | 295.0abcd | 68.1cde | 21.8ab | ||
| N3 | D1 | 132.9f | 266.6abcd | 72.5bcd | 21.1ab | |
| D2 | 176.6cdef | 304.9abc | 67.1de | 21.3ab | ||
| D3 | 173.9cdef | 302.6abc | 77.8abc | 21.4ab | ||
| QLYSM | N0 | D1 | 177.8cd | 167.5bcde | 87.4ab | 24.2cd |
| D2 | 171.7d | 217.1ab | 72.3de | 24.6abc | ||
| D3 | 210.7bcd | 133.5e | 89.7a | 24.3bcd | ||
| N1 | D1 | 179.2 cd | 246.6a | 83.9abc | 24.3abcd | |
| D2 | 218.9bcd | 208.3abc | 75.0cde | 24.7ab | ||
| D3 | 257.6b | 188.6abcde | 82.3abcd | 24.5abc | ||
| N2 | D1 | 164.0d | 221.0ab | 70.3e | 24.2cd | |
| D2 | 262.5b | 128.6e | 75.6cde | 24.3bcd | ||
| D3 | 268.8b | 142.2de | 80.5abcde | 24.0d | ||
| N3 | D1 | 244.9bc | 151.6cde | 77.5bcde | 24.8a | |
| D2 | 247.5b | 194.7abcd | 78.9bcde | 24.7ab | ||
| D3 | 432.0a | 130.8e | 82.2abcd | 24.5abc | ||
| ANOVA | Variety (V) | ns | ns | ns | * | |
| Nitrogen (N) | ** | ** | ns | ns | ||
| Density (D) | ** | * | ns | ns | ||
| V*N | * | ns | * | * | ||
| V*D | ns | ns | ns | ns | ||
| N*D | ns | ns | ns | ns | ||
| V*N*D | * | ns | ns | ns |
†Different lowercase letters within columns indicate significant differences at P < 0.05 across N rates (n = 3).