Table 2.
Effects of winter cover crops on rice crop yield components.
| Year | Rice season | Treatment | Panicle Length (cm) | Seed setting rate (%) | Effective panicle number (104 hm−2) | Thousand grain weight (g) |
|---|---|---|---|---|---|---|
| 2015 | Early rice | T0 | 20.54 ± 0.24a | 86.23 ± 0.65b | 298.45 ± 0.82c | 25.82 ± 0.06a |
| T1 | 21.41 ± 0.38a | 85.77 ± 0.41b | 312.23 ± 1.86b | 26.12 ± 0.33a | ||
| T2 | 21.21 ± 0.28a | 88.48 ± 1.31 ab | 300.91 ± 2.02c | 26.14 ± 0.38a | ||
| T3 | 21.39 ± 0.32a | 89.10 ± 0.05a | 318.58 ± 2.14a | 26.00 ± 0.21a | ||
| T4 | 20.70 ± 0.47a | 86.78 ± 1.13 ab | 310.48 ± 1.21b | 26.10 ± 0.23a | ||
| Late rice | T0 | 20.25 ± 0.19a | 83.03 ± 0.40a | 304.18 ± 3.24b | 25.20 ± 0.35a | |
| T1 | 21.15 ± 0.29a | 85.71 ± 0.90a | 313.74 ± 1.25a | 26.06 ± 0.39a | ||
| T2 | 20.77 ± 0.44a | 83.13 ± 0.63a | 309.34 ± 0.24 ab | 25.91 ± 0.12a | ||
| T3 | 20.70 ± 0.36a | 84.86 ± 1.21a | 313.65 ± 2.34a | 25.01 ± 0.47a | ||
| T4 | 20.50 ± 0.08a | 84.52 ± 0.60a | 312.82 ± 2.09a | 25.65 ± 0.03a | ||
| 2018 | Early rice | T0 | 17.43 ± 0.72a | 81.86 ± 1.19a | 296.67 ± 0.67c | 23.61 ± 0.25a |
| T1 | 16.54 ± 1.33a | 82.33 ± 0.65a | 373.80 ± 1.15b | 23.65 ± 0.35a | ||
| T2 | 18.06 ± 0.23a | 81.94 ± 1.91a | 332.27 ± 0.88bc | 23.45 ± 0.61a | ||
| T3 | 17.66 ± 0.45a | 84.39 ± 2.03a | 320.40 ± 1.15bc | 24.37 ± 0.45a | ||
| T4 | 17.88 ± 0.28a | 84.99 ± 1.84a | 391.60 ± 0.58a | 24.44 ± 0.12a | ||
| Late rice | T0 | 22.79 ± 0.44a | 89.68 ± 0.82a | 315.00 ± 12.60a | 23.9838 ± 0.44a | |
| T1 | 23.58 ± 0.34a | 89.93 ± 2.43a | 346.50 ± 44.10a | 24.0645 ± 0.30a | ||
| T2 | 22.75 ± 0.02a | 90.29 ± 0.42a | 327.60 ± 6.30a | 24.1157 ± 0.26a | ||
| T3 | 23.34 ± 0.54a | 90.80 ± 1.91a | 327.6 ± 35.08a | 24.1306 ± 0.56a | ||
| T4 | 23.16 ± 0.47a | 90.58 ± 0.64a | 384.30 ± 12.60a | 24.2719 ± 0.09a |
Note: Means of three replicates and standard deviations. Letters indicate significant differences between the crops at P < 0.05.