Table 2.
Annual fertilizer application rates in the field experiment (kg·ha−1).
| Fertil- izers |
UT season | SR season | Total amount | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Base fertilizers | Seedling stage | Rosette stage | Vigorous growth stage | Total | Base fertilizers | Green stage | Tillering stage | Heading stage | Total | ||
| N | 104.4 | 3.9 | 7.6 | 11.5 | 127.5 | 66.7 | 66.2 | 16.6 | 16.6 | 166.0 | 293.5 |
| P2O5 | 97.0 | — | 1.0 | 1.0 | 99.0 | 29.9 | — | — | — | 29.9 | 128.9 |
| K2O | 266.4 | 13.3 | 23.3 | 74.2 | 377.2 | 36.0 | 36.0 | — | — | 72.0 | 449.2 |
UT is unsaturated tobacco cropping, and SR is saturated rice cropping.