Forests,
Год журнала:
2024,
Номер
15(11), С. 1897 - 1897
Опубликована: Окт. 28, 2024
The
partial
substitution
of
chemical
fertilizer
with
organic
is
a
crucial
practice
for
enhancing
crop
production
and
quality,
although
its
impact
on
natural
rubber
has
rarely
been
explored.
In
this
study,
two-year
field
experiment
was
conducted
to
investigate
the
different
nitrogen
application
rates
varying
proportions
dry
yield,
nutrition,
properties.
Regarding
application,
control
treatment
received
no
amendment,
while
low-nitrogen
amended
138
g·tree−1·year−1
nitrogen.
medium-nitrogen
276
nitrogen,
high-nitrogen
552
addition,
low-organic-nitrogen
medium-organic-nitrogen
were
each.
results
demonstrated
that
50%
resulted
in
highest
yield
across
all
sampling
periods,
ranging
from
46.43
94.65
g·tree−1.
Additionally,
exhibited
superior
soil
total
(1067.69
mg·kg−1),
available
(84.06
content
roots
(1.08%),
leaves
(3.25%),
fresh
latex
(0.27%),
raw
(0.44%)
compared
other
treatments.
terms
physical
properties
rubber,
advantages
weight-average
molecular
weight
(1.57
×
106
g·mol−1),
number-average
(0.36
plasticity
retention
index
(97.35%),
Wallace
(40.25),
Mooney
viscosity
(81.40).
For
mechanical
properties,
higher
tensile
strength
(19.84
MPa),
greater
elongation
at
break
(834.75%),
increased
tear
(31.07
N·mm−1).
Overall,
improved
nutrition
trees
by
introducing
input,
resulting
remarkable
enhancements
Therefore,
incorporation
as
an
effective
strategy
improving
both
rubber.
Abstract
Fe-modified
biochar
(FB)
and
co-using
Chinese
milk
vetch
rice
straw
(MR)
are
two
effective
ways
for
mitigating
the
cadmium
(Cd)
contamination
in
paddy
fields
southern
China.
Nevertheless,
effects
of
FB
combined
with
MR
on
Cd
passivation
mechanism
remain
unclear.
In
current
study,
strengthening
induced
by
were
found
mechanisms
extracted
dissolved
organic
matter
(DOM)
from
co-decomposition
alleviation
investigated
through
pot
experiment
adsorption
experiment.
Pot
demonstrated
that
co-incorporating
decreased
available
23.1%
increased
iron
plaque
concentration
11.8%,
resulting
a
34.7%
reduction
concentrations
brown
compared
addition
FB.
Furthermore,
improved
nutrients
soil.
The
molecular
characteristics
DOM
derived
decomposition
(DOM-MR)
analyzed
fluorescence
excitation
emission
matrix
spectroscopy-parallel
factor
analysis
(EEM-PARAFAC)
Fourier
transform-ion
cyclotron
resonance
mass
spectrometry
(FT-ICR
MS).
Results
showed
lignin/carboxylic-rich
alicyclic
molecules
protein/amino
sugar
main
compounds,
potentially
involved
binding.
Adsorption
experiments
revealed
DOM-MR
functional
groups,
specific
surface
area,
negative
charges
FB,
inducing
both
physisorption
chemisorption
Cd(II).
maximum
capacity
after
adding
was
634
mg
g
−1
,
1.30
times
without
DOM-MR.
This
study
suggested
MR,
could
serve
as
an
innovative
practice
simultaneous
remediation
soil
fertilization
Cd-polluted
fields.
It
also
provided
valuable
insights
basis
optimize
performances
enhance
its
potential
immobilization.
Graphical
Soil Use and Management,
Год журнала:
2025,
Номер
41(1)
Опубликована: Янв. 1, 2025
Abstract
The
application
of
rice
straw
and
milk
vetch
(MV)
is
a
common
practice
in
paddy
systems
Southern
China.
However,
the
effects
addition
MV
different
amounts
on
soil
fertility
yield
remain
uncertain.
To
analyse
co‐incorporation
fertility,
enzyme
activities
as
well
two
typical
soils
red
region,
i.e.
alluvial
soil,
pot
experiment
consisting
six
treatments
with
four
replications
was
conducted:
(1)
chemical
fertilizer
only
control
(CK);
(2)
MV,
(3)
6
g
−1
(S1MV);
(4)
12
(S2MV);
(5)
18
(S3MV)
(6)
24
(S4MV).
Our
results
showed
that
could
significantly
increase
highest
value
found
S3MV
treatment
when
compared
treatment.
When
increased
by
314.5%
31.8%
respectively.
Compared
treatment,
improved
nutrients
stimulated
while
S2MV
or
soils.
Moreover,
partial
least
squares
path
modelling
revealed
affected
organic
carbon,
dissolved
carbon
activities.
Overall,
combining
suitable
rate
should
be
recommended
to
improve
region.
