Table 4.
Effects of different application ratios biochar and nitrogen fertilizer on dry matter accumulation and distribution of tobacco plants.
| Experimental site | Treatments | Dry matter accumulation(g/plant) | Dry matter accumulation (g/plant) | Dry matter distribution ratio (%) | ||||
|---|---|---|---|---|---|---|---|---|
| Root | Stem | Leaf | Root | Stem | Leaf | |||
| Pot experiment | B0N105 | 104.26 ± 1.67c | 17.91 ± 0.74c | 34.73 ± 0.37c | 51.62 ± 1.05c | 17.18 ± 0.43a | 33.32 ± 0.68a | 49.50 ± 0.40a |
| B600N105 | 117.22 ± 1.00b | 21.31 ± 1.56b | 38.32 ± 0.61b | 57.59 ± 1.21b | 18.18 ± 1.31a | 32.69 ± 0.66a | 49.13 ± 0.83a | |
| B1200N105 | 101.04 ± 2.14c | 18.92 ± 0.84c | 34.54 ± 0.87c | 47.58 ± 1.06c | 18.73 ± 0.71a | 34.18 ± 0.58a | 47.09 ± 0.15b | |
| B0N126 | 103.77 ± 2.03c | 18.01 ± 0.07c | 34.40 ± 1.20c | 51.36 ± 1.23c | 17.36 ± 0.39a | 33.14 ± 0.68a | 49.49 ± 0.63a | |
| B600N126 | 129.02 ± 6.92a | 22.65 ± 1.48ab | 42.55 ± 1.40a | 63.82 ± 3.41a | 17.58 ± 1.20a | 33.01 ± 1.26a | 49.41 ± 1.59a | |
| B1200N126 | 129.22 ± 5.91a | 23.63 ± 0.99a | 41.73 ± 1.07a | 63.85 ± 3.49a | 18.27 ± 0.76a | 32.33 ± 1.34a | 49.40 ± 0.59a | |
| Field experiment | B0N105 | 451.25 ± 23.65d | 44.91 ± 3.77d | 123.02 ± 12.15b | 283.32 ± 11.30cd | 9.94 ± 0.41c | 27.23 ± 1.47bc | 62.83 ± 1.88a |
| B600N105 | 511.66 ± 17.17b | 59.06 ± 6.48b | 130.43 ± 10.16b | 322.17 ± 2.13b | 11.53 ± 0.95ab | 25.47 ± 1.23c | 63.01 ± 1.71a | |
| B1200N105 | 458.47 ± 2.78cd | 55.99 ± 1.76c | 131.64 ± 6.21b | 270.84 ± 6.47d | 12.21 ± 0.33a | 29.22 ± 1.43ab | 60.12 ± 1.35b | |
| B0N126 | 478.89 ± 8.04c | 48.45 ± 2.34b | 135.38 ± 1.04b | 295.06 ± 6.85c | 10.11 ± 0.37c | 28.28 ± 0.58ab | 61.61 ± 0.57a | |
| B600N126 | 590.80 ± 6.32a | 66.40 ± 3.00a | 180.80 ± 5.11a | 343.61 ± 8.06a | 11.24 ± 0.40b | 30.61 ± 1.06a | 58.16 ± 1.00b | |
| B1200N126 | 593.69 ± 9.14a | 66.43 ± 0.56a | 178.29 ± 4.65a | 348.96 ± 9.05a | 11.19 ± 0.26b | 30.03 ± 0.76a | 58.77 ± 0.82b | |
B0, B600, and B1200 represent 0, 600, and 1800 kg/ha biochar application rates, respectively. N105 and N126 represent 105 and 126 kg/ha application rates of pure nitrogen, respectively. The significant difference among treatments after specific days of post-transplantation is shown by different lowercase letters within a column according to the least significant difference test (LSD; p < 0.05).