Effects of saline water irrigation on winter wheat and its safe utilization under a subsurface drainage system in coastal saline-alkali land of Hebei Province, China

Gao, Hui; Fu, Tonggang; Shou-pu, Tang; Liu, Jintong

doi:10.1007/s00271-023-00849-8

Cited by 12 publications

(10 citation statements)

References 22 publications

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“…In this study, the saline‐alkali land information of Huanghua City in the coastal area was interpreted using Landsat TM images. The supervised classification method was used to interpret the remote sensing images, and the interpretation marks were established in combination with the characteristics of the aboveground vegetation (Gao et al, 2016; Gao, Zhao, et al, 2023). The classification accuracy of other classes was over 90%, except for marsh and aquaculture in 1991 and marsh alone in 2020.…”

Section: Discussionmentioning

confidence: 99%

“…Soil salinization can be influenced by topography, climate, groundwater salinity, land cover, and agricultural activities, but not the groundwater table depth (Zhang et al, 2022). This study did not discuss or analyze the influence of climate or agricultural activities on the groundwater table depth threshold because the climate and agricultural activities across the study area are largely the same; for example, the amount of rainfall and evaporation are the same, and there no irrigation is used in agriculture in it (Gao et al, 2023). Ren et al (2019) found that soil salinization exhibits a relationship with topographic conditions; the higher the altitude, the lower the soil salt content.…”

Section: Discussionmentioning

confidence: 99%

“…The groundwater table depth can be reduced through relevant saline‐alkali land treatment measures. For example, underground pipe drainage and salt drainage engineering can reduce the groundwater table depth and are widely used in saline‐alkali land areas with high water levels; this reduces the salt left behind after evaporation by controlling the water table, while enhancing the effect of salt leaching (Gao et al, 2023; Yu et al, 2016). If the groundwater table depth is higher than the upper limit of the groundwater response threshold, regardless of how the groundwater table depth changes, saline‐alkali land will gradually transform into non‐saline‐alkali land under this condition.…”

Section: Discussionmentioning

confidence: 99%

“…The closer the soil is to the coast, the more salt it contains (Gao et al, 2016). Most of the shallow groundwater is brackish water with a salinity greater than 3 g/L (Gao et al, 2023). The shallow groundwater table depth changes with the seasons.…”

Section: Methodsmentioning

confidence: 99%

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Influence of groundwater table depth on the evolution of saline‐alkali land in a coastal area

Gao,

Fu,

Wang

et al. 2024

Land Degrad Dev

Self Cite

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The groundwater table depth, which is typically shallow in coastal areas, is one of the decisive conditions impacting soil salinization. The influence mechanism of shaollow groundwater table depth change on the evolution of saline‐alkali land is still unclear. In this study, Huanghua City, a coastal city of the Bohai Sea in China, was selected as the research area, and four wells with groundwater table depths ranging from shallow to deep were studied. The groundwater table depth was divided into three levels based on the average groundwater table depth over 30 years, namely shallow, medium, and deep. We analyzed the influence of changes in groundwater table depth in each well on the evolution of saline‐alkali land within a radius of 2 km. The results showed that changes in groundwater table depth did not cause conversion between saline‐alkali land grades in shallow areas, whereas, in medium‐depth areas, changes in groundwater table depth caused conversion among saline‐alkali land grades. In deep areas, changes in groundwater table depth did not affect the conversion of moderate/heavy saline‐alkali land to non‐mild saline‐alkali land. The lower limit and upper limit of the groundwater table depth response threshold of saline‐alkali land were found to be 1.35 and 3.58 m, respectively, in this coastal area. When the groundwater table depth of saline‐alkali land remains lower than 1.35 m for a long period, it will become heavily salinized, one appropriate treatment measure in this instance is to plant saline‐alkali tolerant plants beacause improving saline‐alkali land by reducing the groundwater table depth is a challenge. When the groundwater table depth of saline‐alkali land remains greater than 3.58 m for a long period, changes in groundwater table depth will not influence the gradual reduction of salinization, the saline‐alkali land should be properly irrigated and drained to avoid secondary salinization caused by the groundwater level rising to the upper limit of the response threshold. When the water depth in saline‐alkali land remains between 1.35 and 3.58 m for a long time, the degree of salinization will change with the change in water depth, the underground water depth can be reduced under a subsurface drainage system in order to treat the saline‐alkali land. The research results can provide a scientific basis for improvement of saline‐alkali land.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Influence of groundwater table depth on the evolution of saline‐alkali land in a coastal area

Gao,

Fu,

Wang

et al. 2024

Land Degrad Dev

Self Cite

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“…According to the PCA conducted for 2022, the rst three PCs accounted for 94.69% of the variance, and their contribution rates were 60.02%, 21.51% and 13.17%, respectively. The three PCs for 2021 and 2022 can be expressed as follows: PC2021 1 = 0.103X 1 -0.183X 2 -0.181X 3 -0.100X 4 + 0.162X 5 + 0.186X 6 + 0.167X 7 + 0.098X 8 + 0.100X 9 (7) PC2021 2 = 0.033X 2 + 0.148X 1 + 0.102X 3 + 0.349X 4 + 0.128X 5 -0.043X 6 -0.041X 7 + 0.364X 8 + 0.357X 9 (8) PC2021 3 = 0.784X 1 -0.063X 2 + 0.268X 3 -0.095X 4 + 0.050X 5 + 0.125X 6 -0.455X 7 -0.092X 8 + 0.008X 9 (9) PC2022 1 = 0.153X 1 -0.110X 2 -0.114X 3 -0.107X 4 + 0.153X 5 + 0.164X 6 + 0.175X 7 + 0.112X 8 + 0.177X 9 (10) PC2022 2 = 0.277X 2 + 0.372X 1 + 0.360X 3 + 0.146X 4 + 0.078X 5 -0.098X 6 -0.006X 7 + 0.347X 8 + 0.121X 9 (11) PC2022 3 =-0.060X 1 + 0.046X 2 -0.312X 3 + 0.640X 4 -0.327X 5 + 0.331X 6 + 0.186X 7 + 0.260X 8 -0.107X 9 (12) The comprehensive evaluation function can be established for 2020 to 2022 by the contribution rate of the PCs as follows: I2020 = 0.82F2020 1 + 0.18F2020 2 (13) I2021 = 0.60F2021 1 + 0.27F2021 2 + 0.13F2021 3 (14) I2022 = 0.63F2022 1 + 0.23F2022 2 + 0.14F2022 3 (15) where I year is the comprehensive score.…”

Section: Optimal Irrigation Water Quality For High-quality Winter Jujubementioning

confidence: 99%

Effects of saline water irrigation on the soil salinity, yield and quality of field-grown winter jujube (Ziziphus jujuba Mill. “Dongzao”)

Cong,

Wang,

Pang

et al. 2024

Preprint

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[Aims] The shortage of freshwater resources and soil salinization have always been considerable challenges for agricultural production in the Yellow River Delta. Safe and efficient use of saline water resources is thus urgently needed. [Methods] To reveal the effects of irrigation with underground saline water on soil salinity, yield and quality of drip-irrigated winter jujube, a field trial was conducted from 2020 to 2022. The experiment was conducted with 5 levels of blending a mix of groundwater and freshwater, namely, 1.7 (T1), 3.3 (T2), 4.9 (T3), 6.5 (T4) and 8.1 (T5) dS·m-1. [Results] The results for three aspects were as follows: (i) Soil surface salinity accumulation occurred when the irrigation water salinity was greater than 4.9 dS·m-1 in 2020, and salinity was maintained in balance in the following two years owing to adequate rainfall during the planting period. (ii) Compared to T1, irrigation with 3.3 dS·m-1 or 4.9 dS·m-1 of saline water had no significant effect on yield, and the winter jujube yield decreased with increasing irrigation water salinity. (iii) Saline water irrigation improved winter jujube quality, as evidenced by the increase in soluble sugar, total soluble solids, titratable acid, vitamin C and flavonoid contents. When the irrigation water salinity ranged from 4.9 dS·m-1 to 8.1 dS·m-1, the comprehensive quality was within the appropriate scope. [Conclusions] Considering the yield, quality and salt accumulation of winter jujube, drip irrigation is conducive to ensuring the sustainability of winter jujube with saline water salinities less than 4.9 dS·m-1.

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Effects of water quality and nitrogen on wheat productivity: Experimental and modelling study using the SALTMED model

Chauhdary,

Li,

Ragab

et al. 2024

Irrigation and Drainage

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The effects of different water qualities and nitrogen doses need to be investigated for wheat growth to determine the optimal management strategy for sustaining wheat production potential to ensure human food security. Therefore, a 2‐year study (2020–2021 to 2021–2022) was conducted on wheat irrigated with different water qualities, including canal water (Ca), tubewell water (Tu) and mixed Ca‐Tu water (Mx), each fertilized with two nitrogen doses, that is, N75 = 75 kgN.ha−1 and N100 = 100 kgN.ha−1. Ca⨯N100 performed best, with 5.12 t.ha−1 grain yield, 11.60 t.ha−1 biomass, 102.83 cm plant height and 1.32 kg.m−3 water productivity. The best values of the root mean square error (RMSE), normalized root mean square error (NRMSE), coefficient of determination (R2) and coefficient of residual mass (CRM) were 0.11, 0.12, 0.93 and −0.004, respectively, for calibration and 0.13, 0.15, 0.87 and ±0.01, respectively, for validation of the SALTMED model. The scenario simulation was performed for additional levels of water salinity (electrical conductivity [EC] = 8 and 12 dS.m−1) and nitrogen doses (50, 125, 150 and 175 kgN.ha−1). The results revealed improvements in wheat grain yield of 107%, 16% and −6% at EC = 8 dS.m−1 and 125%, 31% and 5% at EC = 12 dS.m−1, while the improvements in biomass were 113%, 22% and −2% at EC = 8 dS.m−1 and 137%, 29% and 8% at EC = 12 dS.m−1 with increasing nitrogen doses from 50–125 kg.ha−1, 125–150 kg.ha−1 and 150–175 kg.ha−1, respectively. It is recommended that high‐quality water with the lowest possible EC and nitrogen applications of up to 150 kgN.ha−1 be adopted for wheat production in semi‐arid areas of Punjab, Pakistan.

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Effects of saline water irrigation on winter wheat and its safe utilization under a subsurface drainage system in coastal saline-alkali land of Hebei Province, China

Cited by 12 publications

References 22 publications

Influence of groundwater table depth on the evolution of saline‐alkali land in a coastal area

Influence of groundwater table depth on the evolution of saline‐alkali land in a coastal area

Effects of saline water irrigation on the soil salinity, yield and quality of field-grown winter jujube (Ziziphus jujuba Mill. “Dongzao”)

Effects of water quality and nitrogen on wheat productivity: Experimental and modelling study using the SALTMED model

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