Table 2. Effects of experimental treatments on the transpiration rate of maize leaves (Tr, mmol H2O m−2 s−1) in 2015–2016.
Abbreviations for different treatments are defined in Fig. 3. Values followed by different letters within a column are significantly different at the 5% probability level (least significant difference; n = 3).
| Years | Planting densities | Irrigation modes | Before irrigation at 11-leaf stage | After irrigation at 11-leaf stage | Before irrigation at silking stage | After irrigation at silking stage | Filling stage |
|---|---|---|---|---|---|---|---|
| 2015 | L | NI | 4.97abc | 5.25b | 4.64ab | 4.72cde | 4.07abc |
| IV | 5.21a | 6.70a | 4.89a | 4.98cde | 4.27ab | ||
| IS | 5.14ab | 5.43b | 4.63ab | 6.07a | 4.28ab | ||
| IVS | 5.15ab | 6.72a | 4.84ab | 6.15a | 4.37a | ||
| M | NI | 4.70abcd | 5.12b | 4.55ab | 4.57de | 4.00abcd | |
| IV | 4.73abcd | 6.63a | 4.73ab | 4.86cde | 4.06abc | ||
| IS | 4.75abcd | 5.20b | 4.53ab | 5.88ab | 4.10abc | ||
| IVS | 4.79abcd | 6.51a | 4.75ab | 5.96ab | 4.15abc | ||
| H | NI | 4.35cd | 5.02b | 4.26ab | 4.25e | 3.47d | |
| IV | 4.30d | 6.23a | 4.28ab | 4.37e | 3.61cd | ||
| IS | 4.51cd | 5.11b | 4.22b | 5.26bcd | 3.65cd | ||
| IVS | 4.45cd | 6.33a | 4.35ab | 5.41bc | 3.74bcd | ||
| Average | L | 5.12A | 6.02A | 4.75A | 5.48A | 4.25A | |
| M | 4.74B | 5.87A | 4.64A | 5.32A | 4.08A | ||
| H | 4.40C | 5.67A | 4.28B | 4.82B | 3.62B | ||
| NI | 4.67A | 5.13B | 4.48A | 4.51B | 3.85B | ||
| IV | 4.75A | 6.52A | 4.63A | 4.74B | 3.98A B | ||
| IS | 4.80A | 5.25B | 4.46A | 5.74A | 4.01A | ||
| IVS | 4.80A | 6.52A | 4.65A | 5.84A | 4.08A | ||
| ANOVA | PD | ** | ns | ** | ** | ** | |
| IM | ns | ** | ns | ** | * | ||
| PD × IM | ns | ns | ns | ns | ns | ||
| 2016 | L | NI | 4.23abcd | 4.61de | 4.04cd | 4.31ef | 3.33cde |
| IV | 4.36a | 6.17a | 4.95a | 4.75cde | 3.62abc | ||
| IS | 4.39a | 4.90cd | 4.20bcd | 5.96a | 3.86ab | ||
| IVS | 4.43a | 6.12a | 5.01a | 6.11a | 3.95a | ||
| M | NI | 4.02abcd | 4.45de | 4.03cd | 4.18ef | 3.11de | |
| IV | 4.22abcd | 5.87ab | 4.69ab | 4.48def | 3.48bcd | ||
| IS | 4.18abcd | 4.69cde | 4.05cd | 5.61ab | 3.47bcde | ||
| IVS | 4.26abc | 5.95ab | 4.77ab | 5.83ab | 3.54abc | ||
| H | NI | 3.70d | 4.05e | 3.68d | 3.78f | 2.19f | |
| IV | 3.89bcd | 5.33bc | 4.19bcd | 4.14ef | 2.75e | ||
| IS | 3.74cd | 4.35de | 3.72d | 5.12bcd | 2.78e | ||
| IVS | 3.83bcd | 5.38bc | 4.17cd | 5.28bc | 3.04de | ||
| Average | L | 4.35A | 5.45A | 4.55A | 5.22A | 3.69A | |
| M | 4.17A | 5.24A | 4.36A | 5.02A | 3.40B | ||
| H | 3.79B | 4.78B | 3.94B | 4.58B | 2.69C | ||
| NI | 3.99A | 4.37B | 3.92B | 4.09B | 2.88B | ||
| IV | 4.15A | 5.79A | 4.58A | 4.46B | 3.28A | ||
| IS | 4.10A | 4.65B | 3.99B | 5.48A | 3.37A | ||
| IVS | 4.17A | 5.82A | 4.65A | 5.74A | 3.51A | ||
| ANOVA | PD | ** | ** | ** | ** | ** | |
| IM | ns | ** | ** | ** | ** | ||
| PD × IM | ns | ns | ns | ns | ns |
Notes.
ANOVA, analysis of variance
**
significance at 1% probability level
*
significance at 5% probability level; ns: not significant
- IM
- irrigation mode
- PD
- planting density
Lowercase and uppercase letters in columns indicate significant differences among planting density and irrigation mode treatments, respectively.