Impact of saline soil improvement measures on salt content in the abandonment-reclamation process

Shi, Xiaoyan; Wang, Haijiang; Song, Jianghui; Lv, Xin; Li, Weidi; Li, Baoguo; Shi, Jianchu

doi:10.1016/j.still.2020.104867

Cited by 22 publications

(14 citation statements)

References 40 publications

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“…In many cases, plants grown in saline soil often experience diminished root proliferation, failure of seeds germination, reduced photosynthetic activity, and decreased vegetative growth ( Gong et al, 2018 ). Plants experience high osmotic pressure, salt poisoning, and disruption of plant nutrient balance ( Shrivastava and Kumar, 2015 ; Shi et al, 2021 ). Soil salinity in arid and semiarid areas causes more evapotranspiration than precipitation, creating water stress conditions, and soil minerals undergo a lot of leaching in the plant root zone ( Zörb et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

et al. 2022

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Salinity is one of the most damaging abiotic stresses due to climate change impacts that affect the growth and yield of crops, especially in lowland rice fields and coastal areas. This research aimed to isolate potential halotolerant plant growth-promoting rhizobacteria from different rhizo-microbiome and use them as effective bioinoculants to improve rice growth under salinity stress conditions. Bioassay using rice seedlings was performed in a randomized block design consisting of 16 treatments (control and 15 bacterial isolates) with three replications. Results revealed that isolates S3, S5, and S6 gave higher shoot height, root length, and plant dry weight compared with control (without isolates). Based on molecular characteristics, isolates S3 and S5 were identified as Pseudomonas stutzeri and Klebsiella pneumonia. These isolates were able to promote rice growth under salinity stress conditions as halotolerant plant growth-promoting rhizobacteria. These three potent isolates were found to produce indole-3-acetic acid and nitrogenase.

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Section: Introductionmentioning

confidence: 99%

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

et al. 2022

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“…Maize Field. In agriculture production, soil modifiers had great potential for water-saving [16,20,26,28]. And it could 13 Journal of Sensors enhance soil water-holding capacity and effectively improve the water content.…”

Section: Influence Of Different Soil Modifiers On Water Content Inmentioning

confidence: 99%

“…Thus, there is still a long way to before we safely used those biological methods [12][13][14]. Physical improvement methods mainly include isolation layer salt control, straw covering, irrigation leaching, drainage leaching, irrigation, and drainage combined leaching [15,16]. The isolation layer and straw mulch are mainly used to reduce surface temperature and cut off the contact surface between the soil surface and air, thus slowing down phreatic water evaporation, reducing the upward accumulation of salt, and inhibiting the accumulation of salt surface [17,18].…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Soil Modifiers on Salt Improvement and Distribution, Crop Growth of the Gully Land Consolidation on Loess Plateau

2022

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Due to the strong evaporation and leakage loss, secondary saline-alkali was the main problem in the watershed of gully land consolidation on Loess Plateau. Through field farming experiments, five modifiers (maize stalk (MS), humus acid (HA), Yan Ke (YK), He Kang (HK), and nanobiochar (NB)) were studied to investigate the effects of these soil modifiers on soil water and salt distribution, leaf photosynthetic characteristics, and maize growth and yields, as well as economic benefits in secondary saline-alkali soils of gully land consolidation watershed on Loess Plateau in 2019 and 2020. The results showed that soil modifiers could increase the water-holding capacity of the soil, reduce the salt content of the soil profiles, and decompose the accumulation of salt. The maximum desalination rate obtained in 2019 and 2020 increased, respectively, by 71.57% and 46.02%, compared to that in the control treatment. Soil modifiers could increase the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), and decreased the intercellular CO2 concentration (Ci). The output increased by 13.63%-31.84%, and revenue increased by 6.48%-38.01%. According to analyzing the production of soil modifier application, we found that the highest net profit was achieved when HK application rate was 52.4 kg/ha. Therefore, this study suggested that 52.4 kg/ha might be recommended as an appropriate soil modifier application strategy to deal with crop growth and improve economic benefit in secondary saline-alkali soils of Northwest China.

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“…In the Yellow River Delta region, different soil amelioration methods, including engineering, biological, and agricultural measures, have been applied over the past decade (Mao et al, 2016;Shi et al, 2021). As a result, the soil salt content is decreased to 0.3% or less and the survival rate of plant seedlings reaches more than 95% in some coastal saline salt marshes (Li et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of different biomass materials as a salt-isolation layer on water and salt migration in coastal saline soil

Yang

et al. 2021

PeerJ

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The aim of this study was to find a material suited for the prevention of evaporative water loss and salt accumulation in coastal saline soils. One-dimensional vertical water infiltration and phreatic evaporation experiments were conducted using a silty loam saline soil. A 3-cm-thick layer of corn straw, biochar, and peat was buried at the soil depth of 20 cm, and a 6-cm-thick layer of peat was also buried at the same soil depth for comparison. The presence of the biochar layer increased the upper soil water content, but its ability to inhibit salt accumulation was poor, leading to a high salt concentration in the surface soil. The 3-cm-thick straw and 6-cm-thick peat layers were most effective to inhibit salt accumulation, which reduced the upper soil salt concentration by 96% and 93%, respectively. However, the straw layer strongly inhibited phreatic evaporation and resulted in low water content in the upper soil layer. Compared with the straw layer, the peat layer increased the upper soil water content. Thus, burying a 6-cm-thick peat layer in the coastal saline soil is the optimal strategy to retain water in the upper soil layer and intercept salt in the deeper soil layer.

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Impact of saline soil improvement measures on salt content in the abandonment-reclamation process

Cited by 22 publications

References 40 publications

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

Effects of Different Soil Modifiers on Salt Improvement and Distribution, Crop Growth of the Gully Land Consolidation on Loess Plateau

Effects of different biomass materials as a salt-isolation layer on water and salt migration in coastal saline soil

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