Using saline water drip irrigation and soil matric potential control for tree establishment in coastal saline soil

2021 ◽  
Vol 170 ◽  
pp. 106337
Author(s):  
Chen Zhang ◽  
Xiaobin Li
Keyword(s):  
Drip Irrigation ◽  
Saline Soil ◽  
Saline Water ◽  
Soil Matric Potential ◽  
Tree Establishment ◽  
Matric Potential ◽  
Potential Control ◽  
Coastal Saline Soil ◽  
Water Drip

scholarly journals Integrated use of saline water and rootzone matric potential control for saline soil reclamation and shrub growth

2021 ◽  
Author(s):  
Chen Zhang ◽  
Xiaobin Li ◽  
Yaohu Kang
Keyword(s):  
Survival Rate ◽  
Drip Irrigation ◽  
Rainy Season ◽  
Saline Soil ◽  
Saline Water ◽  
Soil Reclamation ◽  
Soil Matric Potential ◽  
Matric Potential ◽  
Potential Control ◽  
The Third

A four-year field experiment was carried out to evaluate an integrated use of saline water for the saline soil reclamation in Hebei Province of North China. A landscape shrub (Caryopteris × clandonensis ‘Worcester Gold’) was cultivated using drip irrigation scheduled by rootzone soil matric potential control at five levels of water salinity (ECi): 0.8, 3.1, 4.7, 6.3, and 7.8 dS·m−1. Soil matric potential control was applied using a threshold of −5, −10, −15, and −20 kPa in the first, second, third, and fourth year, respectively. After four growing seasons, the saline soil (initial ECe value of 27.8 dS·m−1) was reclaimed to slightly saline soil for 0–1 m depth (4.1–7.2 dS·m−1) under drip irrigation with saline water of ECi < 7.8 dS·m−1. The salt leaching efficiency of root zone soil was highest in the first year and lowered year-by-year. The plants strongly responded to the different soil water and salinity regime. Significant decreases in survival rate, plant growth, and shoot dry weight in response to increasing ECi were found. To achieve a relative survival rate of >50%, the threshold salinity of irrigation water for ‘Worcester Gold’ cultivation was 7.8, 7.0, 5.6, and 5.3 dS·m–1, for the first, second, third, and fourth growing season, respectively. It is recommended to use an inter-seasonal evolving matric potential threshold of −10 kPa for dry season of the third year, −15 kPa for rainy season of the third year and dry season of the fourth year, and −20 kPa for rainy season of the fourth year.

Reclamation of very heavy coastal saline soil using drip-irrigation with saline water on salt-sensitive plants

2015 ◽  
Vol 146 ◽  
pp. 159-173 ◽  
Author(s):  
Xiaobin Li ◽  
Yaohu Kang ◽  
Shuqin Wan ◽  
Xiulong Chen ◽  
Linlin Chu
Keyword(s):  
Drip Irrigation ◽  
Saline Soil ◽  
Saline Water ◽  
Coastal Saline Soil

Effect of ridge planting on reclamation of coastal saline soil using drip-irrigation with saline water

CATENA ◽  
2017 ◽  
Vol 150 ◽  
pp. 24-31 ◽  
Author(s):  
Xiaobin Li ◽  
Yaohu Kang ◽  
Shuqin Wan ◽  
Xiulong Chen ◽  
Shiping Liu ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Saline Soil ◽  
Saline Water ◽  
Coastal Saline Soil

scholarly journals Long-Term Amelioration Practices Reshape the Soil Microbiome in a Coastal Saline Soil and Alter the Richness and Vertical Distribution Differently Among Bacterial, Archaeal, and Fungal Communities

2022 ◽  
Vol 12 ◽  
Author(s):  
Ruibo Sun ◽  
Xiaogai Wang ◽  
Yinping Tian ◽  
Kai Guo ◽  
Xiaohui Feng ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Salinity ◽  
Saline Soil ◽  
Saline Water ◽  
Soil Microbial Communities ◽  
Soil Microbiome ◽  
Economic Losses ◽  
Saline Water Irrigation ◽  
Coastal Saline Soil ◽  
Plastic Mulching

Globally soil salinity is one of the most devastating environmental stresses affecting agricultural systems and causes huge economic losses each year. High soil salinity causes osmotic stress, nutritional imbalance and ion toxicity to plants and severely affects crop productivity in farming systems. Freezing saline water irrigation and plastic mulching techniques were successfully developed in our previous study to desalinize costal saline soil. Understanding how microbial communities respond during saline soil amelioration is crucial, given the key roles soil microbes play in ecosystem succession. In the present study, the community composition, diversity, assembly and potential ecological functions of archaea, bacteria and fungi in coastal saline soil under amelioration practices of freezing saline water irrigation, plastic mulching and the combination of freezing saline water irrigation and plastic mulching were assessed through high-throughput sequencing. These amelioration practices decreased archaeal and increased bacterial richness while leaving fungal richness little changed in the surface soil. Functional prediction revealed that the amelioration practices, especially winter irrigation with saline water and film mulched in spring, promoted a community harboring heterotrophic features. β-null deviation analysis illustrated that amelioration practices weakened the deterministic processes in structuring coastal saline soil microbial communities. These results advanced our understanding of the responses of the soil microbiome to amelioration practices and provided useful information for developing microbe-based remediation approaches in coastal saline soils.

scholarly journals Salt leaching of heavy coastal saline silty soil by controlling the soil matric potential

2019 ◽  
Vol 14 (No. 3) ◽  
pp. 132-137 ◽  
Author(s):  
Xiuping Wang ◽  
Zhizhong Xue ◽  
Xuelin Lu ◽  
Yahui Liu ◽  
Guangming Liu ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Crop Production ◽  
Bohai Bay ◽  
Soil Matric Potential ◽  
Effective Management ◽  
Matric Potential ◽  
Silty Soil ◽  
Salt Leaching ◽  
Profile Depth ◽  
Oil Sunflower

Techniques of drip irrigation are broadly applied for the reclamation of saline-alkali lands, during which effective management of water use to accelerate salt leaching is essential for crop production. In 2017, a field experiment with five treatments of soil matric potential (SMP) levels of −5, −10, −15, −20, and −25 kPa was conducted in heavy saline silty soil land in Bohai Bay, China to study the effects of drip irrigation on salt leaching. The results showed that salt leaching was enhanced with increasing SMP, particularly under an SMP of −5 kPa within a 30 cm soil profile depth and 15 cm distance from the dripper, and the average electrical conductivity of saturated paste extracts (ECe) decreased from 13.8 to 1.52 dS/m. Water consumption increased with increasing SMP, but the yield of oil sunflower did not differ significantly between SMPs of –5 and –10 kPa. These findings indicated that a relatively high crop yield of oil sunflower and effective salt leaching can be achieved if the SMP can be controlled at –10 kPa in heavy saline silty soil.  

Sign in / Sign up

Export Citation Format

Share Document