Table 1.
Air temperature, relative humidity and precipitation data of the study site.
Fig 1.
Layout of the drip irrigation design in this study.
Fig 2.
ECe values seven days after winter irrigation.
BI, before irrigation; NI, no irrigation. DI1-DI6 represent the drip irrigation treatments with irrigation quotas of 450, 1350, 2250, 3150, 4050 and 4950 m3/hm2. FI1-FI6 represent the flood irrigation treatments with irrigation quotas of 450, 1350, 2250, 3150, 4050 and 4950 m3/hm2. Values represent the mean ± SE of at least three replicates. Significant differences are indicated by different small letters among treatments at a given soil depth (P < 0.05), and ns represents no significant difference (P > 0.05).
Fig 3.
ECe values before sprouting the following year.
Values represent the mean ± SE of at least three replicates. Significant differences are indicated by different small letters among treatments at a given soil depth (P < 0.05), and ns represents no significant difference (P > 0.05).
Fig 4.
Survival rate in different treatments in the following year.
The fitted curves for irrigation quota against the survival rate of jujube trees obtained from tests are plotted. Values represent the mean ± SE (n = 3).
Fig 5.
The ground diameter of jujube trees under different treatments.
Values represent the mean ± SE (n = 20). Above the error bars, * denotes a significant difference (P < 0.05), ** denotes a very significant difference (P < 0.01), and ns denotes no significant difference (P > 0.05).
Fig 6.
Height of jujube trees under different treatments.
Values represent the mean ± SE (n = 20). Above the error bars, * denotes a significant difference (P < 0.05), ** denotes a very significant difference (P < 0.01), and ns denotes no significant difference (P > 0.05).