TITLE:
Study on the Effect of Different Modified Zeolite to Phosphorus Activation in Red Soil
AUTHORS:
Jing Shi, Naiming Zhang, Chenguang Zhang, Boxian Wei
KEYWORDS:
Activation, Phosphorus, Red Soil, Zeolite
JOURNAL NAME:
Journal of Environmental Protection,
Vol.7 No.13,
December
19,
2016
ABSTRACT: The activation
of soil-fixed phosphorus is a long-term
concern in soil science. In order to enhance the activation effect to
soil-fixed phosphorus in red soil, different modified zeolite, through
physical, chemical method and the associated both physics and chemistry, was
used in this paper. The results showed as following: 1) the activated ability to
soil-fixed phosphorus in red soil for modified zeolite was higher than the common
one signally. Order of the ability
for all kinds of modification zeolite in absolute activation amount and
activation rate was: Modified in high temperature ammonium saturated zeolite > Ammonium
saturated zeolite > Modified in high temperature zeolite > Common
zeolite. 2) The increasing rate of modified
phosphorus in high temperature ammonium saturated zeolite and ammonium
saturated zeolite had a decline trend with time postponed while that for modified
phosphorus in high temperature zeolite and routine zeolite was rising
gradually with time postponed. For ammonium
saturated zeolite, the increasing rate of phosphorus in low available
phosphorus content red soil was significantly faster than that in red soil with
the higher content of available phosphorus. 3) The activation rate for the same
modified zeolite showed difference in different phosphorus level soil. The
order is: SPhigh > SPmedium > SPlow.