Saline soil desalination by honeysuckle ( Lonicera japonica Thunb.) depends on salt resistance mechanism

2016 ◽  
Vol 88 ◽  
pp. 226-231 ◽  
Author(s):  
Kun Yan ◽  
Hualing Xu ◽  
Shijie Zhao ◽  
Jingjing Shan ◽  
Xiaobing Chen
Keyword(s):  
Saline Soil ◽  
Resistance Mechanism ◽  
Salt Resistance ◽  
Lonicera Japonica ◽  
Soil Desalination

A high-absorption and self-driven salt-resistant black gold nanoparticle-deposited sponge for highly efficient, salt-free, and long-term durable solar desalination

2019 ◽  
Vol 7 (6) ◽  
pp. 2581-2588 ◽  
Author(s):  
Yizhen Liu ◽  
Zhipeng Liu ◽  
Qichen Huang ◽  
Xuechen Liang ◽  
Xuechang Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Resistance Mechanism ◽  
Salt Resistance ◽  
The Self ◽  
Solar Absorption ◽  
Highly Efficient ◽  
Solar Desalination ◽  
High Absorption

The self-driven salt resistance mechanism and high solar absorption of BDS realized efficient and long-term durable solar desalination.

Rheological Properties and Salt Resistance of a Hydrophobically Associating Polyacrylamide

2014 ◽  
Vol 67 (10) ◽  
pp. 1396 ◽  
Author(s):  
Quanhua Deng ◽  
Haiping Li ◽  
Ying Li ◽  
Xulong Cao ◽  
Yong Yang ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Oil Recovery ◽  
Resistance Mechanism ◽  
Salt Resistance ◽  
Water Soluble ◽  
Design And Synthesis ◽  
Tertiary Oil Recovery ◽  
Hydrophobically Associating ◽  
Hydrolyzed Polyacrylamide ◽  
Relationship Of

The rheological properties of electrolyte solution of a hydrophobically associating acrylamide-based copolymer (HA-PAM) containing hydrophobically modified monomer and sodium 2-acrylamido-2-methylpropanesulfonic sulfonate were investigated in this paper. The study mainly focussed on effects of electrolyte concentration, temperature, and shear rate on the solution rheological properties. HA-PAM exhibited much stronger salt tolerance and shearing resistance than the commonly used partially hydrolyzed polyacrylamide, and has great potential for application in tertiary oil recovery of oilfields with high salinity. The salt resistance mechanism of HA-PAM in solution was investigated by combining molecular simulation and experimental methods. The structure–performance relationship of the salt-resisting polymer may provide useful guidance for design and synthesis of novel water-soluble polymers with high salt resistance.

scholarly journals Assess Effectiveness of Salt Removal by a Subsurface Drainage with Bundled Crop Straws in Coastal Saline Soil Using HYDRUS-3D

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 943 ◽  
Author(s):  
Peirong Lu ◽  
Zhanyu Zhang ◽  
Zhuping Sheng ◽  
Mingyi Huang ◽  
Zemin Zhang
Keyword(s):  
Removal Efficiency ◽  
Land Reclamation ◽  
Saline Soil ◽  
Subsurface Drainage ◽  
Design Parameters ◽  
Soil Leaching ◽  
High Investment ◽  
Soil Desalination ◽  
Salt Distribution ◽  
Coastal Land

The low permeability of soil and high investment of salt management pose great challenges for implementation of land reclamation in coastal areas. In this study, a temporary soil leaching system was tested in which bundled maize straw (straw drainage module, SDM) was operated as a subsurface drainage tube and diluted seawater was used for leaching. A preliminary field experiment was conducted in coastal soil-filled lysimeters to examine the system’s feasibility and a numerical model (HYDRUS-3D) based on field measured data was designed to simulate the entire leaching process. The simulation results showed that the soil water velocity and the non-uniformity of salt distribution were apparently enhanced in the region approaching the drain outlet. The mass balance information indicated that the amount of water drained with SDM accounts for 37.9–66.0% of the total amount of leaching water, and the mass of salt removal was about 1.7 times that of the salt input from the diluted seawater. Additional simulations were conducted to explore the impacts of the design parameters, including leaching amount, the salinity of leaching water, and the number of leaching events on the desalination performance of the leaching system. Such simulations showed that the salt removal efficiency and soil desalination rate both were negatively related to the seawater mixture rate but were positively associated with the amount of leaching water. Increasing the leaching times, the salt removal efficiency was gradually decreased in all treatments, but the soil desalination rate was decreased only in the treatments leached with less diluted seawater. Our results confirmed the feasibility of the SDM leaching system in soil desalination and lay a good foundation for this system application in initial reclamation of saline coastal land.

Techniques of Preventing Subgrade from Salinization for Qarham to Golmud Expressway

2014 ◽  
Vol 960-961 ◽  
pp. 97-102
Author(s):  
Jun Yong Liu ◽  
Liu Jun Zhang
Keyword(s):  
Saline Soil ◽  
Salt Lake ◽  
Salt Resistance ◽  
Road Surface ◽  
High Grade ◽  
Secondary Salinization ◽  
Salt Migration

Qarham to Golmud expressway is the first high-grade road in Qarham salt lake, which is regarded as the most enormous inland salt lake in China, moreover, it is the first expressway built on the inland salt lake in China. There is high and excessive saline soil distributed over this area whose thickness is no less than 20m, but the average subgrade height of the expressway is only 2m. A great many of measures are taken for the construction of the subgrade to prevent salt migrating from foundation to roadbed and pavement, which will cause disasters of secondary salinization in roadbed and pavement. By paving testing road at the site and detecting the efficiency of the measures in preventing salt, the paper put forward the technique of preventing subgrade from salinization for Qarham to Golmud expressway. The results of testing and detecting demonstrate that the height of salt migration is only 45cm in subgrade under the condition of brine supply, which is less than the height of subgrade. So it is efficient to keep the roadbed and pavement from the erosion of salt; The settlement of road surface was about 0~2mm among 3 months since the highways had been opened to traffic for two years, and uneven settlement and other diseases caused by the secondary salinization were not appeared, which showed that the measures of salinization prevention (salt resistance) were taken well to achieve the design purposes.

scholarly journals CULTIVATION OF CORN UNDER SALINE SOIL RECLAMATION

2020 ◽  
pp. 42-46
Author(s):  
Chingizkhon Vali ugli Toshpulatov ◽  
Botir Burievich Tukhtashev ◽  
Ikrom Abdukarimovich Rakhmonov ◽  
Bakhodir Toshboevich Mavlonov
Keyword(s):  
Saline Soil ◽  
Soil Condition ◽  
Dry Mass ◽  
Salt Resistance ◽  
Climatic Conditions ◽  
Soil Reclamation ◽  
Sowing Time ◽  
Green Mass ◽  
Advanced Technologies ◽  
Saline Medium

To cultivate field crops and increasing their salinity resistance under saline soil condition has become the prior issue. It is important to study the technology of care for each field crop based on the specific soil and climatic conditions. It is very essential to study the advanced technologies to increase the salinity of corn in these soils. In the condition of less saline soils, the green mass of the produced corn was 669.9 c/ha and dry mass constituted 169.6 c/ha while was in average saline soil this indicates were 312.7 c/ha and 95.00 c/ha relatively. Under strong saline soil condition initially 3-4 pieces of corn sprouted per sq. m. and subsequently died of salt exposure. KEYWORDS: corn, less saline, medium saline, salt resistance, sowing time, dense of seedling, green mass, irrigation dynamics.

scholarly journals Transcriptome Sequence Analysis Elaborates a Complex Defensive Mechanism of Grapevine (Vitis vinifera L.) in Response to Salt Stress

2018 ◽  
Vol 19 (12) ◽  
pp. 4019 ◽  
Author(s):  
Le Guan ◽  
Muhammad Haider ◽  
Nadeem Khan ◽  
Maazullah Nasim ◽  
Songtao Jiu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Resistance Mechanism ◽  
Salt Resistance ◽  
Pcr Analysis ◽  
Enzyme Analysis ◽  
Marker Genes ◽  
Vitis Vinifera L ◽  
Rna Seq ◽  
Ros Scavenging ◽  
Grapevine Leaves

Salinity is ubiquitous abiotic stress factor limiting viticulture productivity worldwide. However, the grapevine is vulnerable to salt stress, which severely affects growth and development of the vine. Hence, it is crucial to delve into the salt resistance mechanism and screen out salt-resistance prediction marker genes; we implicated RNA-sequence (RNA-seq) technology to compare the grapevine transcriptome profile to salt stress. Results showed 2472 differentially-expressed genes (DEGs) in total in salt-responsive grapevine leaves, including 1067 up-regulated and 1405 down-regulated DEGs. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotations suggested that many DEGs were involved in various defense-related biological pathways, including ROS scavenging, ion transportation, heat shock proteins (HSPs), pathogenesis-related proteins (PRs) and hormone signaling. Furthermore, many DEGs were encoded transcription factors (TFs) and essential regulatory proteins involved in signal transduction by regulating the salt resistance-related genes in grapevine. The antioxidant enzyme analysis showed that salt stress significantly affected the superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and glutathione S-transferase (GST) activities in grapevine leaves. Moreover, the uptake and distribution of sodium (Na+), potassium (K+) and chlorine (Cl−) in source and sink tissues of grapevine was significantly affected by salt stress. Finally, the qRT-PCR analysis of DE validated the data and findings were significantly consistent with RNA-seq data, which further assisted in the selection of salt stress-responsive candidate genes in grapevine. This study contributes in new perspicacity into the underlying molecular mechanism of grapevine salt stress-tolerance at the transcriptome level and explore new approaches to applying the gene information in genetic engineering and breeding purposes.

scholarly journals Study on the Farmland Improvement Effect of Drainage Measures under Film Mulch with Drip Irrigation in Saline–Alkali Land in Arid Areas

2021 ◽  
Vol 13 (8) ◽  
pp. 4159
Author(s):  
Li Zhao ◽  
Tong Heng ◽  
Lili Yang ◽  
Xuan Xu ◽  
Yue Feng
Keyword(s):  
Groundwater Level ◽  
Drip Irrigation ◽  
Saline Soil ◽  
Soil Salinization ◽  
Test Area ◽  
Limiting Factors ◽  
Arid Areas ◽  
Secondary Salinization ◽  
Soil Desalination ◽  
Soil Level

Water scarcity and imbalances in irrigation and drainage are the main factors leading to soil salinization in arid areas. There is a recognized need for effective drainage measures to prevent and improve saline−alkali land. The principal objective of this project was to investigate the effects of drainage measures on soil desalination and farmland drainage in the process of improving saline–alkali soils; these measures included subsurface pipe drainage (SPD) and open ditch drainage (ODD). The results of the tests, conducted over two years, revealed that the soil desalination rate in the SPD test area was between 25.8% and 35.2%, the cotton emergence rate was 36.7%, and a 3.8 t hm−2 seed cotton yield could be obtained. The soil electrolytic conductivity (EC) decreased step by step over time, and the average annual decrease reached 10 dS m−1. The degree of soil salinization was reduced from a moderately saline soil level (8−15 dS m−1) to a weakly saline soil level (4–8 dS m−1). Thus, the phased goal of improving saline–alkali land was achieved. The soil desalination rate in the ODD test area was only 1/10 of the SPD area; high soil EC (9−12 dS m−1) and groundwater level (2–3 m) were the most limiting factors affecting cotton growth in the ODD test area. The current results show that the critical depth of groundwater level affecting farmland secondary salinization is 4 m. In order to improve the salt discharge standard, SPD technology should be used on the basis of ODD. For salt that has accumulated in the soil for a long time, the technical mode of drip irrigation and leaching, followed by SPD drainage, in combination with the current irrigation system can achieve the goal of sustainable agriculture development.

scholarly journals Accumulation of beneficial bacteria in the rhizosphere of maize (Zea mays L.) grown in a saline soil in responding to a consortium of plant growth promoting rhizobacteria

2021 ◽  
Vol 71 (1) ◽  
Author(s):  
Jieli Peng ◽  
Jia Ma ◽  
Xiaoyan Wei ◽  
Cuimian Zhang ◽  
Nan Jia ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Plant Growth ◽  
Saline Soil ◽  
Plant Growth Promoting Rhizobacteria ◽  
Salt Resistance ◽  
Beneficial Bacteria ◽  
Pgp Traits ◽  
Plant Growth Promoting ◽  
Rhizosphere Bacterial Community ◽  
Growth Promoting

Abstract Purpose Salt stress reduces plant growth and is now becoming one of the most important factors restricting the agricultural productivity. Inoculation of plant growth-promoting rhizobacteria (PGPR) has been shown to confer plant tolerance against abiotic stress, but the detailed mechanisms of how this occurs remain unclear and the application effects in different reports are unstable. In order to obtain a favorite effect of PGPR inoculation and improve our knowledge about the related mechanism, we performed this study to analyze the mechanism of a PGPR consortium on improving the salt resistance of crops. Methods A region-specific (Saline land around Bohai Sea in China) PGPR consortium was selected that contains three strains (Pseudomonas sp. P8, Peribacillus sp. P10, and Streptomyces sp. X52) isolated from rhizosphere of Sonchus brachyotus DC. grown in a saline soil. By inoculation tests, their plant growth-promoting (PGP) traits and ability to improve the salt resistance of maize were investigated and shifting in rhizosphere bacterial community of the inoculated plants was analyzed using the high-throughput sequencing technology. Results The three selected strains were salt tolerant, presented several growth promoting properties, and inhibited several phytopathogenic fungi. The inoculation of this consortium promoted the growth of maize plant and enriched the beneficial bacteria in rhizosphere of maize in a saline soil, including the nitrogen fixing bacteria Azotobacter, Sinorhizobium, and Devosia, and the nitrification bacteria Candidatus Nitrososphaera, and Nitrosovibrio. Conclusions The bacterial consortium P8/P10/X52 could improve plant growth in a saline soil by both their PGP traits and regulating the rhizosphere bacterial community. The findings provided novel information about how the PGPR helped the plants in the view of microbiome.

Physical Modification of Bentonite on the Salt Resistence Capacitiy

2013 ◽  
Vol 743-744 ◽  
pp. 687-691
Author(s):  
Zhi Ming Sun ◽  
Yang Yang Huai ◽  
Zhong Lei Dou ◽  
Shui Lin Zheng
Keyword(s):  
Double Layer ◽  
Resistance Mechanism ◽  
Chemical Properties ◽  
Salt Resistance ◽  
The Other ◽  
Physical And Chemical Properties ◽  
Mineral Separation ◽  
Physical Modification ◽  
Physical And Chemical ◽  
And Chemical Properties

A kind of bentonite composite with high salt resistance capacity was prepared using physical modification including physical mineral separation and doping porous non-metallic minerals. The results showed that through physical mineral separation, the content of montmorillonite and the salt resistance capacity increased substantially. The bentonite compsite sample doped by 5.0% diatomite showed better salt resistance capacity than the other compsite samples. The salt resistance mechanism was discussed through the double layer theory and physical and chemical properties of doped minerals.

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