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[1]LIU Yu-tao,DONG Zhi,LI Hong-li,et al.Effect of Different Salt-isolation Treatments on Diurnal Variation of Photosynthesis of Fraxinus chinenesis in Coastal Saline-Alkaline Land[J].Research of Soil and Water Conservation,2011,18(03):126-130.

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Effect of Different Salt-isolation Treatments on Diurnal Variation of Photosynthesis of Fraxinus chinenesis in Coastal Saline-Alkaline Land

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 03 Page number: 126-130 Column: Public date: 2011-06-20

Title:: Effect of Different Salt-isolation Treatments on Diurnal Variation of Photosynthesis of Fraxinus chinenesis in Coastal Saline-Alkaline Land

Author(s):: LIU Yu-tao¹, DONG Zhi¹, LI Hong-li¹, ZHAO Ming-yan², DING Guo-dong²; 1. College of Forestry, Shandong Agricultural University, Shandong Province Key Laboratory of Soil Erosion and Ecological Rehabilitation, Tai’an, Shandong 271018, China;
2. Key Laboratory of Soil and Water Conservation and Desertification Combating of Ministry of Education, Beijing Forestry University, Beijing 100083, China

Keywords:: photosynthesis; net photosynthetic rate; salt-isolation layer; coastal saline-alkaline land; Fraxinus chinenesis

CLC:: S718.43

DOI:: -

Abstract:: In order to quest the effect of different salt-isolation treatments on diurnal variation of photosynthesis of Fraxinus chinenesis in coastal saline-alkaline land,supply the theoretical basis for selecting suitable tree species and improvement measures,photosynthetic diurnal variations of Fraxinus chinenesis were measured under the treatments with slag and sand set at the bottom of tree pits as the salt-isolated layer in the field.The results showed that,salt-isolation treatment could significantly reduce the soil electrical conductivity.Slag treatment significantly increased net photosynthetic rate,transpiration rate and stomatal conductance.Sand treatment also significantly increased photosynthetic rate.Slag treatment was better than sand treatment in terms of increasing transpiration rate and stomatal conductance.Both of the two measures reduced the limitation of photosynthesis by non stomatal factors.As the physical properties of slag and sand are different,slag treatment was better than sand treatment with regard to reducing the soil electrical conductivity and promoting the photosynthesis.

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