Response of Water-Salt Migration to Brackish Water Irrigation with Different Irrigation Intervals and Sequences

Zhu, Jinjin; Yang, Mingjun; Sun, Jingsheng; Zhang, Zhenhua

doi:10.3390/w11102089

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…It is therefore feasible to use 1-3 g/L brackish water for farmland irrigation under the SSP585 and SSP245 climate scenarios at 2-4 m groundwater levels. The analysis results further verified the conclusions of field and soil column experiments in this region [62][63][64][65]. However, as the added salts to the soil by brackish water irrigation can only migrate downward to the soil layer below 1 m, or even excrete into the groundwater, it is necessary to consider the impact of brackish water irrigation on groundwater quality.…”

Section: Precipitation Plays a Key Role In Soil Salt Transportsupporting

confidence: 72%

Characteristics and Influence Factors of Soil Water and Salt Movement in the Yellow River Irrigation District

He,

Zhang,

et al. 2023

Agronomy

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Climate change and human activities lead to freshwater shortage, soil salinization, and food security crises in arable land. To explore the natural and irrigation factors on soil water and salt movement, this study quantitatively analyzed the dynamic characteristics of soil water and salt movement under precipitation, groundwater irrigation, and brackish water irrigation conditions for the next 30 years using Hydrus-1D model-based parameters obtained from the winter wheat–summer maize rotation experiments in the Yellow River Irrigation District. The results showed that precipitation was the key factor of climate change affecting soil water and salt migration, especially in the 0–20 cm soil layer. Under both SSP585 and SSP245 climate scenarios, rainfall in normal and wet years promoted salt leaching up to 1 m below the surface soil. But in dry years, salt washing treatment was required for the tillage layer to prevent salt accumulation. The higher the groundwater level was, the higher the soil water and salt content was in the 0–100 cm soil layer. In this soil layer, a 2 m groundwater level contributed 30% to wheat water needs, while a 3 m groundwater level contributed 18%, and no significant contribution was observed for a 4 m groundwater level. The salinity of the soil profile showed an overall increasing trend with irrigation using 1–3 g/L brackish water for 30 years. However, the salinity in the 0–100 cm soil layer was below the salt tolerance threshold of winter wheat and summer maize with salts accumulated in the 1–2 m soil layer. Considering the salinization of the root zone and crop water needs, it is recommended that the safe groundwater level for brackish water irrigation should be 3 m in the study region. This study provides scientific reference for groundwater–farmland ecosystems to utilize brackish water and treat saline–alkali lands.

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Section: Precipitation Plays a Key Role In Soil Salt Transportsupporting

confidence: 72%

Characteristics and Influence Factors of Soil Water and Salt Movement in the Yellow River Irrigation District

He,

Zhang,

et al. 2023

Agronomy

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“…High concentrations of Na + and HCO 3 − expose plants to salt and alkali hazards. Some plants suffer foliar damage due to exposure to water containing high concentrations of Na + and Cl − , which has an impact on plant growth [8,15,18,59]. The exchangeable sodium ratio (ESP) was used to measure the tolerance of a crop to salt.…”

Section: Water Quality Influence On Crop Yieldsmentioning

confidence: 99%

“…Population growth and the acceleration of industrialization have led to excessive demand for natural resources, which has subsequently resulted in many social and ecological problems. These issues inevitably exacerbate the human impact on the environment, particularly on surface water and groundwater resources [5][6][7][8][9]. Groundwater is the most reliable source of water for human survival, particularly in arid and semi-arid regions such as northwest China, where precipitation and surface runoff are scarce and large volumes of groundwater are extracted for domestic, agricultural, and industrial activities.…”

Section: Introductionmentioning

confidence: 99%

“…Too many salt ions in plants, such as Na + , inhibits the absorption of other necessary ions and affects the normal production and development of plants [6,19,21,22]. The salinity and sodium absorption ratio (SAR) of irrigation water is used to assess the impact of soil on crop yield [8,15,17,23]. Therefore, the evaluation of irrigation water quality is of great significance for the study of plant growth.…”

Section: Introductionmentioning

confidence: 99%

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Hydrochemical Characteristic of Groundwater and Its Impact on Crop Yields in the Baojixia Irrigation Area, China

Feng

Qian

et al. 2020

Water

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While irrigated crops produce much higher yields than rain-fed crops, the ionic components of irrigation water have important effects on crop yield. Groundwater is widely used for irrigation in the Baojixia irrigation area in China. The chemical characteristics and water quality of groundwater in the Baojixia irrigation area were analyzed and evaluated to study the impact of groundwater quality on crop yield. Results showed cations in the groundwater to mainly be Na+, Ca2+, and Mg2+, whereas the anions are mainly HCO3−, SO42−, and Cl−. Water-rock interaction and cation exchange were identified as the main factors affecting hydrogeochemical properties from west to east. The study found salinity and alkalinity of groundwater in the western region of the study area to be low, and therefore suitable for irrigation. Groundwater in the eastern part of the study area was found to have a medium to high salinity and alkalinity, and is therefore not recommended for long-term irrigation. The groundwater irrigated cultivation of wheat and corn in the research area over 2019, for example, would have resulted in a drop in the annual crop output and an economic loss of 0.489 tons and 0.741 × 104 yuan, respectively. Irrigation using groundwater was calculated to result in the cumulative loss of crop yields and an economic loss of 49.17 tons and 80.781 × 104 yuan, respectively, by 2119. Deterioration of groundwater quality will reduce crop yields. It is recommended that crop yields in the study area be increased by strengthening irrigation water management and improving groundwater quality.

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“…Sensible use of brackish water serves as a viable solution to mitigate local water deficits, diversify agricultural water supplies, and counteract drought [5]. Nonetheless, the elevated mineral content in brackish water used for irrigation can escalate soil salinity, which hinders crop vitality and degrades soil quality [6,7]. Moreover, using brackish water for irrigation can precipitate physiological drought, necessitating adaptive physiological responses in crops and influencing the allocation of photosynthates [8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Organic Fertilizer on Photosynthesis, Yield, and Quality of Pakchoi under Different Irrigation Conditions

Lin,

Wei,

Wang

et al. 2024

Plants

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Water scarcity and the overuse of chemical fertilizers present significant challenges to modern agriculture, critically affecting crop photosynthesis, yield, quality, and productivity sustainability. This research assesses the impact of organic fertilizer on the photosynthetic attributes, yield, and quality of pakchoi under varying irrigation water conditions, including fresh water and brackish water. Findings reveal that the modified rectangular hyperbolic model most accurately captures the photosynthetic reaction to organic fertilization, outperforming other evaluated models. The maximum net photosynthesis rate (Pnmax), yield, soluble sugar (SS), and soluble protein content (SP) all exhibited a downward-opening quadratic parabolic trend with increasing amounts of organic fertilizer application. Specifically, under fresh-water irrigation, the optimal Pnmax, yield, SS, and SP were obtained at organic fertilizer rates of 65.77, 74.63, 45.33, and 40.79 kg/ha, respectively, achieving peak values of 20.71 µmol/(m2·s), 50,832 kg/ha, 35.63 g/kg, and 6.25 g/kg. This investigation provides a foundational basis for further research into the intricate relationship between water salinity stress and nutrient management, with the goal of crafting more sophisticated and sustainable farming methodologies. The insights gained could significantly influence organic fertilizer practices, promoting not only higher yields but also superior quality in agricultural outputs.

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Response of Water-Salt Migration to Brackish Water Irrigation with Different Irrigation Intervals and Sequences

Cited by 8 publications

References 22 publications

Characteristics and Influence Factors of Soil Water and Salt Movement in the Yellow River Irrigation District

Characteristics and Influence Factors of Soil Water and Salt Movement in the Yellow River Irrigation District

Hydrochemical Characteristic of Groundwater and Its Impact on Crop Yields in the Baojixia Irrigation Area, China

Effects of Organic Fertilizer on Photosynthesis, Yield, and Quality of Pakchoi under Different Irrigation Conditions

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