Zn fertilization had significant impacts on Zn
concentration and accumulation in the rice plants
(Table 4) and grains (Figs. 1 and 2). Compared to no
Zn application, Zn fertilization significantly increased
Zn concentrations in both shoot and root by 11.4%–
14.5% and 37.4%–52.2%, respectively. Zn concentration
in brown rice increased from 29.3 mg/kg in the
control treatment to 32.4 mg/kg by ZnSO4 fertilization
and to 31.5 mg/kg by Zn-EDTA fertilization, and
increased overall by 10.6% and 7.5%, respectively.
And the Zn concentration in polished rice increased
from 23.3 mg/kg in the control treatment to 24.7 mg/kg
by ZnSO4 application and to 24.8 mg/kg by Zn-
EDTA application, and increased overall by 6.3%
and 6.6%, respectively. Zn accumulations in both
brown rice and polished rice showed increases of
27.8%–38.3% and 29.7%–43.7%, respectively, depending
on different Zn sources. And these effects
were much more pronounced when Zn was supplied
with ZnSO4.
Zn fertilization had significant impacts on Znconcentration and accumulation in the rice plants(Table 4) and grains (Figs. 1 and 2). Compared to noZn application, Zn fertilization significantly increasedZn concentrations in both shoot and root by 11.4%–14.5% and 37.4%–52.2%, respectively. Zn concentrationin brown rice increased from 29.3 mg/kg in thecontrol treatment to 32.4 mg/kg by ZnSO4 fertilizationand to 31.5 mg/kg by Zn-EDTA fertilization, andincreased overall by 10.6% and 7.5%, respectively.And the Zn concentration in polished rice increasedfrom 23.3 mg/kg in the control treatment to 24.7 mg/kgby ZnSO4 application and to 24.8 mg/kg by Zn-EDTA application, and increased overall by 6.3%and 6.6%, respectively. Zn accumulations in bothbrown rice and polished rice showed increases of27.8%–38.3% and 29.7%–43.7%, respectively, dependingon different Zn sources. And these effectswere much more pronounced when Zn was suppliedwith ZnSO4.
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