Table 2.
Effects of biochar (BC) application during rice ® and wheat (W) seasons on nitrogen (N) content, uptake, and N use efficiency (NUE) of wheat straw and grain.
| Treatment | N Content (g kg−1) | N Uptake (g pot−1) | NUE (%) |
|||
|---|---|---|---|---|---|---|
| Straw | Grain | Straw | Grain | Total | ||
| Control | 2.6 ± 0.1 c | 22.0 ± 0.3 a | 0.05 ± 0.01 d | 0.22 ± 0.02 b | 0.28 ± 0.02 b | – |
| N420 | 3.1 ± 0.1 b | 18.5 ± 1.4 b | 0.18 ± 0.03 b | 0.82 ± 0.04 a | 1.00 ± 0.07 a | 23.2 ± 1.6 a |
| N420 + BC(R) | 4.2 ± 0.1 a | 18.8 ± 0.7 b | 0.25 ± 0.01 a | 0.82 ± 0.09 a | 1.07 ± 0.10 a | 24.9 ± 2.4 a |
| N420 + BC(W) | 2.5 ± 0.2 c | 20.8 ± 2.7 ab | 0.14 ± 0.02 c | 0.84 ± 0.09 a | 0.98 ± 0.07 a | 22.7 ± 1.7 a |
Note: Values are means ± SD (n = 3) and different letters in the same column indicate statistically significant differences at p < 0.05.