The properties of rhizosphere soil of pot-cultured tea plants were investigated. The rhizosphere soil was collected by removing the soil adhering to plant roots and other soil was referred as bulk soil. N fertilization with NH4+ (urea or (NH4)2SO4) significantly reduced soil pH, the contents of exchangeable Ca, K, Mg and base saturation whereas raised extractable Al levels. Compared to bulk soil, rhizosphere soil showed lower pH, exchangeable Ca, Mg and base saturation but a higher exchangeable K. The contents of soil solution Al, exchangeable Al and absorbed hydroxy Al were much higher in the rhizosphere soil than those in the bulk soil. The results showed that the acidification of rhizosphere soil increased the availability of Al, which might be of importance for tea plants capable of taking up a large amount of Al.
RUAN Jian-yun
,
MA Li-feng
,
SHI Yuan-zhi
. Properties of Rhizosphere Soil of Tea Plants and The Impact of Nitrogen Fertilizer[J]. Journal of Tea Science, 2003
, 23(2)
: 167
-170
.
DOI: 10.13305/j.cnki.jts.2003.02.016
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