Title: Distribution and Availability of Inorganic Phosphorus Fractions in the Rhizosphere of Populus deltoides cv.'lux' Grown in Marine Soil
Abstract:In the present experiment, the distribution characteristics and availability of inorganic phosphorus fractions in the rhizosphere and non-rhizosphere soil of Populus deltoides cv. 'lux' were investiga...In the present experiment, the distribution characteristics and availability of inorganic phosphorus fractions in the rhizosphere and non-rhizosphere soil of Populus deltoides cv. 'lux' were investigated. The results showed that (1) Available P was accumulated clearly in the rhizosphere of 3,5 and 11 year-old stands and the accumulation rates were 44%, 96% and 574%, respectively; (2) The contents of Ca 2-P in the rhizosphere of 3,5 and 11 year-old poplar were higher than those in the non-rhizosphere,and the rhizospheric effects (R/S) were 2.15, 2.59 and 5.54, respectively; (3) In the rhizosphere of 5 and 11 year-old poplar, Ca 8-P was accumulated, whereas Ca 10 -P was depleted clearly and the decrease of Ca 10 -P corresponded with the changes of available P, suggesting a stronger consumption in older stands for the P-activation from Ca 10 -P to more available P;(4) There was no obvious difference in Al-P, Fe-P and O-P between rhizosphere and non-rhizosphere soil.Read More
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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