Year | Treatment | Seedling stage | Initial bloom stage | Boll opening stage |
---|
2014 | CK | 9.7 a | 16.9 a | 66.8 a |
T1 | 0.5 b | 1.2 b | 0.5 b |
T2 | 0.8 b | 0.5 b | 0.4 b |
T3 | 0.2 b | 2.0 b | 1.8 b |
2015 | CK | 10.4 a | 15.9 a | 81.7 a |
T1 | 0.8 b | 1.7 b | 0.9 b |
T2 | 1.2 b | 0.8 b | 1.7 b |
T3 | 0.1 b | 2.4 b | 1.6 b |
- Note: The treatments were as follows: T1 (replacing the topsoil from 0~15 cm with the subsoil from 15~30 cm), T2 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~55 cm layer), T3 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~70 cm layer) and CK (rotary tillage within 15 cm). Different small letters indicated significant difference between treatments within the same year