Table 5.
Effect of different drip irrigation treatments on root respiration rate and root efficiency of winter wheat.
| Treatments | Jointing stage | Flowering stage | ||||
|---|---|---|---|---|---|---|
| Pn (μmolm-2 s-1) |
Rroot
(μmolm-2 s-1) |
RE (Pn/Rroot) |
Pn (μmolm-2 s-1) |
Rroot
(μmolm-2 s-1) |
RE (Pn/Rroot) |
|
| CK | 13.1b | 0.36a | 36.4b | 24.8b | 0.54a | 46.1c |
| I1 | 14.5b | 0.32b | 45.3a | 26.1a | 0.48b | 54.4b |
| I2 | 11.8a | 0.26c | 45.4a | 26.7a | 0.44c | 60.7a |
Different letters within a column imply significant differences between different treatments at P< 0.05. CK: traditional irrigation and fertilization methods; I1: surface drip fertilization; I2: underground drip fertilization. Rroot: root respiration; RE, root system efficiency.