Table 6.
Comparative analysis of the normalized blueness intensity (NBI) in rice canopy under nitrogen (N) fertilizer and density treatments
| Treatments | TS | JS | HS | FS | LFS | MS |
|---|---|---|---|---|---|---|
| N0 | 0.191 ± 0.009 b | 0.216 ± 0.005c | 0.131 ± 0.005b | 0.132 ± 0.003b | 0.147 ± 0.001b | 0.126 ± 0.001a |
| N1 | 0.204 ± 0.006 a | 0.226 ± 0.004b | 0.143 ± 0.012a | 0.157 ± 0.001a | 0.194 ± 0.016a | 0.128 ± 0.005a |
| N2 | 0.209 ± 0.015 a | 0.228 ± 0.004b | 0.150 ± 0.004a | 0.162 ± 0.008a | 0.200 ± 0.008a | 0.127 ± 0.003a |
| N3 | 0.188 ± 0.008b | 0.235 ± 0.002a | 0.149 ± 0.004a | 0.161 ± 0.003a | 0.204 ± 0.005a | 0.133 ± 0.002a |
| D4 | 0.199 ± 0.014A | 0.226 ± 0.005A | 0.144 ± 0.010A | 0.151 ± 0.014A | 0.182 ± 0.022A | 0.126 ± 0.005A |
| D3 | 0.207 ± 0.017A | 0.223 ± 0.010A | 0.145 ± 0.010A | 0.153 ± 0.013A | 0.188 ± 0.027A | 0.128 ± 0.004A |
| D2 | 0.197 ± 0.008A | 0.225 ± 0.009A | 0.148 ± 0.006A | 0.152 ± 0.016A | 0.195 ± 0.031A | 0.129 ± 0.003A |
| D1 | 0.200 ± 0.012A | 0.230 ± 0.008A | 0.141 ± 0.015A | 0.156 ± 0.015A | 0.188 ± 0.028A | 0.125 ± 0.003A |
TS, JS, HS, FS, LFS and MS indicate the tillering, jointing, heading, filling, late filling and maturity stages of rice, respectively. Different lowercase letters indicate significant differences among nitrogen (N) fertilizer treatments (p < 0.05); different uppercase letters indicate significant differences among planting density treatments (p < 0.05)