Vegetation years | Budding stage | Flowering stage | Fruit ripening stage | |||||
Soil temperature, ˚C | Stem height, cm | Rhizome length, cm | Soil temperature, ˚C | Stem height, cm | Rhizome length, cm | Soil temperature, ˚C | Rhizome length, cm | |
1 | 12.4 | 15.8 ± 0.66 | 10.4 ± 0.38 | 15.7 | 29.4 ± 0.50 | 11.2 ± 0.45 | 19.9 | 14.5 ± 0, |
2 | 8.3 | 17.1 ± 0.27 | 9.1 ± 0.57 | 12.6 | 31.7 ± 0.39 | 10.2 ± 0.23 | 17.2 | 13.7 ± 0, |
3 | 12.7 | 15.2 ± 0.40 | 8.7 ± 0.81 | 14.9 | 29.0 ± 0.48 | 9.7 ± 0.40 | 17.0 | 12.8 ± 0, |