A Dynamic Study on Trace Element of Rhizosphere Soil during Bamboo Forming Stage of Phyllostachys edulis
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1.
International Centre for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan, Beijing 100102,China
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3.
College of Forestry, Jiangxi Agricultural University, Nanchang 330045,Jiangxi,China
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Abstract
The concentration dynamics of trace element, pH, and soil organic matter in rhizosphere soil of young Phyllostachys edulis during bamboo forming stage were analyzed in Huangshan Public Forestry Farm. The result indicated that the pH value of the rhizosphere soil of one-year-old Ph. edulis was between 4.86 and 6.04, relatively suitable for bamboo’s growth. With the growth of young bamboo, the pH value took the form of parabola wholly, and reached the maximum in August, 6.03; the contents of Cu and organic matters reached the peak in June and July respectively, which were 38.77, and 0.67, the content of organic matters reached the minimum at the end of July, then increased slowly; and the contents of Zn, Fe, and Mn reached the peak in June, then presented a downward trend. Variance analysis showed that there were significant differences in the contents of Cu, Zn, Fe, and Mn between rhizosphere soil and non-rhizosphere soil of the one-year-old Phyllostachys edulis in October, which showed that the effects of micro-environment of rhizosphere on dissolution and absorption of trace elements was greater for rhizosphere soil than for non-rhizosphere soil.
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