Germination and growth of Puccinellia tenuiflora in saline-sodic soil under drip irrigation

et al. 2015

Scientia Horticulturae

Self Cite

a b s t r a c tDrip-irrigation with saline water was used for reclamation of very heavy coastal saline soils and its effects on salt-sensitive plants were also evaluated in a three-year trial in the coastal region of east China. The original soil salinity expressed as electrical conductivity of the saturation paste extract (EC e ) was an average of 27.13 dS/m in the 0-100 cm depth. The experiment included five treatments of salinity levels of 0.8, 3.1, 4.7, 6.3 and 7.8 dS/m of irrigation water. Chinese rose (Rosa chinensis), a salt-sensitive species, were planted in the sandy loam soil to determine the effect of saline environment on growth characters and dry matter production. Drip-irrigation had a significant positive impact on salt leaching, and the very highly saline soil became mildly saline after reclamation in root zone of soil profiles irrigated with water of salinity up to 7.8 dS/m. An increase in salinity of irrigation water had adverse effects on plant height, stem diameter, survival rate and dry matter production. Root:shoot ratio increased with increasing water salinity. The values of soil-salt tolerance threshold were 2.39 dS/m at emergence and 2.78 dS/m in the growth period after emergence. The emergence rate and dry mass decreased by 27.39 and 41.19% for each unit of EC e increase in the root zone, respectively. These results implied that drip-irrigation with saline water by controlling soil matric potential under a gravel-sand layer was effective in reclamation of this very heavy coastal saline soil for sensitive species such as Chinese rose.

Section: Salt Leachingmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Effect of drip-irrigation with saline water on Chinese rose (Rosa chinensis) during reclamation of very heavy coastal saline soil in a field trial

et al. 2015

Scientia Horticulturae

Self Cite

“…The significant reduction in soil salinity and SAR during reclamation of saline soils suggested that drip irrigation was an effective technique and very useful for utilization and reclamation of saline soils (Kang et al, 2010;Liu et al, 2012;Sun et al, 2013;Wan et al, 2012;Wang et al, 2013). Chinese roses, sensitive to salinity, had high survival rates under drip irrigation with saline water in the growth period, which appeared to further support that drip irrigation is a promising system to use with saline water (Malash et al, 2008;Meiri et al, 1992).…”

Section: Discussionmentioning

confidence: 95%

Response of a salt-sensitive plant to processes of soil reclamation in two saline–sodic, coastal soils using drip irrigation with saline water

Agricultural Water Management

et al. 2016

Self Cite

a b s t r a c tThe aim of this study was to evaluate the impact of soil types and properties on coastal saline soil reclamation and the response of plant growth to the reclamation processes in two soils. Two very heavy coastal saline soils were reclaimed in a three-year trial using drip irrigation with saline water. Chinese roses (Rosa chinensis) were planted, and soil indexes, growth characters, ion absorption and dry matter production were determined. Our results showed that significant salt leaching occurred in both soils, and the effect during the early period of reclamation was better in sandy loam than silt soil. There were higher emergence and survival rates of plants in sandy loam soil due to the rapid reclamation process, while plant growth and dry mass were greater in silt soil due to good fertilizer and water conservation. Most roots were present in the 0-20-cm profile in both soils, but the fine root length value in silt soil was relatively high. These results indicate that water and nutrient management differed in the two soils. During soil reclamation, more attention should be paid to nutrient supply and maintaining soil moisture in sandy loam and to rapidly establishing suitable soil root-zone environments for plant emergence in silt soil.

“…Drip-irrigation has also been shown useful for the reclamation of saline soils (Kang et al, 2010;Liu et al, 2012;Sun et al, 2013;Wan et al, 2012;Wang et al, 2013), and is regarded as the most promising irrigation system for use with saline water (Malash et al, 2008;Meiri et al, 1992). It applies water precisely and uniformly at high frequencies, maintains high soil matric potential (SMP) in the root zone and thus compensates for the decreased osmotic potential caused by irrigation with saline water, and constant high total water potential can be maintained for crop and plant growth (Goldberg et al, 1976;Kang, 1998).…”

Section: Introductionmentioning

confidence: 99%

First and second-year assessments of the rapid reconstruction and re-vegetation method for reclaiming two saline–sodic, coastal soils with drip-irrigation

et al. 2015

Ecological Engineering

a b s t r a c tSoil salinity, sodicity and saline groundwater are major constraints to the cultivation of landscape plants along oceanic coasts. A sustainable approach for reclaiming saline-sodic soils in coastal environments is evaluated. Soil tillage, phased saline water management based on soil matric potential under dripirrigation, and the installation of a gravel-sand layer were used. Field trials using the method showed that the proposed approach had the advantages of considerable water conservation, more effective salt leaching and successful re-vegetation with desired species. Severely saline soils became non-saline within the 0-40 cm soil profile after one year and non-saline to moderately saline within the 0-120 cm depth after two years. The approach can rather quickly create an attractive landscape and maintain good plant growth. Plants representing nearly 30 landscape species, including some sensitive to salinity were proposed. Plantings showed survival up to 90% after one and two years. This approach demands less water, improves the ecological environments, and will inspire development of coastal areas.