Leaching effectiveness of desalinization by rainfall combined with wheat straw mulching on heavy saline soil

Cui, Shiyou; Zhang, Jiaojiao; Sun, Mingfa; Chen, Huatao; Feng, Zhang

doi:10.1080/03650340.2017.1407871

Cited by 13 publications

(3 citation statements)

References 38 publications

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“…When soil salinity reduced gradually, pH was found to rise steadily with increased additional dose of leonardite. The similar variation trend of pH during leaching process was observed in many studies (Cui et al, 2018;Kaschl et al, 2002) and explained as a byproduct brought by leaching or dissolution balance of CaCO 3 precipitation (CaCO 3 + CO 2 + H 2 O ↔ Ca 2+ + 2HCO 3 − ) in the soil. HCO 3 − /CO 3 2moved more slowly than other anions such as Cl − or SO 4 2-.…”

Section: Resultssupporting

confidence: 84%

Leaching of salt-affected soil amended by leonardite

et al. 2020

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Salt-affected soils are widely distributed in arable croplands worldwide with potential productivity so that it is important to develop and utilize these soils. This study investigated the effects of leonardite at the application dosage of 0 (CK), 1% (T1), 3% (T2), and 5% (T3) on amending salt-affected soils under intermittent leaching. Results showed that leaching effectively reduced the electrical conductivity (EC) in soil at CK/T1/T2/T3 with 67.4%/70.9%/75.7%/ 75.6% of salt discharged. As the dominant cation in leachates, Na + removed accounted for 75.1% (CK), 79.7% (T1), 72.6% (T2), and 71.5% (T3) of the total cation in soil. Sodium adsorption ratio of soil column for CK/T1/T2/T3 treatment decreased by 61.1%/68.1%/ 50.0%/44.9%. Organic matters in the soil reached 9.74/17.20/31.41/ 42.88 g/kg for CK/T1/T2/T3 treatment at the end of the experiment, indicating a fertile prospect for reclamation of the salt-affected soils. Soil pH increased with leonardite dosage after leaching in a similar pattern as the decline of EC. The results would provide practical assistance for amending salt-affected soil in the Yellow River Delta.

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Section: Resultssupporting

confidence: 84%

Leaching of salt-affected soil amended by leonardite

et al. 2020

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“…The traditional method to control farmland salinization is salt leaching with large quantities of irrigation water which could waste valuable freshwater resources. Additionally, this traditional method may worsen the salinization situation if the drainage system is not efficient, since it may cause rising groundwater levels and induce upward migration of salt from groundwater (Cui, Zhang, Sun, Chen, & Feng, 2018; Jalila, Moncef, & Hatem, 2016; Li, Luo, Jia, Tang, & Chen, 2018; Logsdon et al, 2009). Many technologies focus on providing desalinated water for agriculture usage by applying techniques such as electrodialysis and reverse osmosis (Barron et al, 2015; Burn et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Geotextile covering: Potential technique for farmland salinization control

Mao

Adeloye

et al. 2021

Land Degrad Dev

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This paper investigated fabric coverings, exploring their ability to remove salt from saline soils. Soil columns filled with saline soil were saturated with saltwater, then covered with four kinds of fabric materials (nylon, cotton, geotextile [150 g m −2 ], and gauze). The soil columns were heated under infrared lights for 25 days. The microstructural characteristics of the fabric materials before and after the experiments, as well as the crystallization conditions on the soil surface, were examined using scanning electron microscope (SEM). The results demonstrated that both hydrophilicity and structure of fabrics affect salt removal efficiency. Although salt quantity removed by geotextile (111.54 g m −2 ) was less than gauze (293.89 g m −2 ), geotextile showed greater potential on salt removal considering long-term evaporation. To further investigate the performance of geotextile material on salt removal, the experiment was repeated with commercially available geotextiles with areal densities of 200, 300, 400, and 500 g m −2 . The 500 g m −2 geotextile could remove 368.15 g m −2 of salt, much more than salt removed with geotextiles of density 150, 200, 300, and 400 g m −2 (111.54, 61.57, 102.05, and 102.34 g m −2 , respectively), which further proved that fabric structure had great influence on salt removal. These results demonstrated that geotextile covering with optimized fabric structure could be a promising and environmentally friendly technique for farmland salinization control.

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“…Saline soils cover 9 million km 2 of the land surface of the earth (FAO, 2005) and globally around 40% of the land area is impacted by high salinity which can be utilized for agricultural production (Cui et al, 2018;Lal, 2009). Salinity problems arise with changes in the concentration of salt in irrigation water (Koç, 2008).…”

Section: Introductionmentioning

confidence: 99%

Response of Salts in Saline Soil Using Different Irrigation Scheduling in Semi-Arid Zone of Pakistan

Soomro

Alaghmand

Shaikh

et al. 2021

Pak. j. sci. ind. res. Ser. A: phys. sci.

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The salinity of soil is a crucial challenge for growers irrigating in semi-arid zones. To accomplish salinity, growers require information about salt's basis and processes of the salt mobility through the root zone. Soil salinity can be managed by exceptional irrigating farming practices including irrigation scheduling to leach down salts through the root zone. This study aimed at examining the salts movement in saline soil in a semi-arid region in Sindh, Pakistan. This field experiment was conducted during the summer of 2017 on a salt-affected land by using three irrigation treatments of canal water including T1 (7 day irrigation interval), T2 (14 day irrigation interval) and T3 (21 days irrigation interval) under 10, 9 and 8 cm depths of irrigation water, respectively. The texture of soil was silty clay loam having an electrical conductivity (EC) ranging from 7.73 to 20.69 dS/m. However, the pH of the soil ranged from 7.89 to 8.04. The findings of a two-way analysis of variance were consistent with the statistical examination of EC and pH data day- wise (7, 14 and 21 days) and depths-wise (10, 9 and 8 cm). Average reductions in the EC and pH of the soil were observed at 7 days interval and 10cm depth at P<0.05. Overall, the findings exhibited that, compared to the 14 and 21 day intervals, a 7 day irrigation interval was more effective in terms of salt leaching from the soil profile.

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Leaching effectiveness of desalinization by rainfall combined with wheat straw mulching on heavy saline soil

Cited by 13 publications

References 38 publications

Leaching of salt-affected soil amended by leonardite

Leaching of salt-affected soil amended by leonardite

Geotextile covering: Potential technique for farmland salinization control

Response of Salts in Saline Soil Using Different Irrigation Scheduling in Semi-Arid Zone of Pakistan

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