This paper summarized several experiments investigating aluminium in tea soil, rhizosphere and its uptake by tea plants. The main points are as follows. 1. The content of exchangeable Al (1βmol/L KCl) ranged from 2.5 to 988βmg/kg with an average of 238βmg/kg. Amorphous and interlay Al were the main fractions. Tea planting intended to increase of water soluble and exchangeable Al fractions. 2. The content of exchangeable Al increased with the amount of applied nitrogen as urea. Exchangeable Al in rhizosphere (1 mm from the root surface) increased significantly when NH4+-N was supplied. 3. Al absorption by intact tea root was a saturation process with a fast phase at the initial stage and lagged behind after some 6 h. 4. Al below 400βµmol/L promoted the growth of root, especially increased the number and total length of lateral roots.
RUAN Jian-yun
,
WANG Guo-qing
,
SHI Yuan-zhi
,
MA Li-feng
. Aluminium in Tea Soils, Rhizosphere Soil and The Characteristics of Al Uptake by Tea Plant[J]. Journal of Tea Science, 2003
, 23(s1)
: 16
-20
.
DOI: 10.13305/j.cnki.jts.2003.s1.004
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