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盐胁迫下土壤-杨树系统中离子运移与分布特征(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年04期
Page:
5-9
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Transportation and Distribution of K~+,Na~+,Ca~(2+) and Mg~(2+) in Soil-Poplar System Under NaCl Stress
Article ID:
1000-2006(2003)04-0005-05
Author(s):
TIAN YeZHANG HuanchaoFANG Shengzuo
College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China
Keywords:
Salt stressPoplarRhizosphereSalt transportationSalt distribution
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2003.04.002
Document Code:
A
Abstract:
The characteristics of salinity ions distribution in soiltree system change under salt stress because many physiological activities of trees are changed,which influences the absorption of water and selectiveabsorption of ions by roots.In this project,the rhizoboxes experiments were randomized completely designed,with application of NaCl to furnish 0,1,and 2 g/kg NaCl,to study the transportation and distribution of K+,Na+,Ca2+,and Mg2+ in soilpoplar systems under NaCl stress in greenhouse.The main results indicated that the watersoluble K+ in rhizosphere were lower than that in nonrhizosphere,but Na+,Ca2+,and Mg2+ were accumulated in rhizosphere under three NaCl treatments.The two poplar clones,I69(Populus deltoides Bartr.cv.’Lux’) and NL1381(the highbred of I69 and P.euramericana(Dode) Geninier CL ’E45/51’),could absorb K+,Ca2+,and Mg2+ more selectively than Na+ under 1 g/kg NaCl treatment,and improve the selective transportation of Ca2+(clone I69) or K+,Ca2+,and Mg2+(clone NL1381)to the aerial parts.

References

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Last Update: 1900-01-01