Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 3, 2024
Low
organic
matter
content
is
one
of
the
main
constraints
in
arid
and
semiarid
regions.
This
constraint
its
negative
influences
on
soils
plant
growth
may
be
alleviated
by
biochar
(BC).
Furthermore,
improving
soil
physical
hydraulic
attributes
application
has
received
increased
attention.
Therefore,
present
study,
effects
sugarcane
bagasse-derived
structural
stability,
water
availability,
pore-size
distribution
(PSD)
three
texturally
different
calcareous
collected
from
agro-climatologically
regions
were
examined
during
a
long-term
experiment.
high-temperature
biochars,
produced
muffle
furnace
traditional
slow
pyrolysis
method
at
300
°C
(BC300)
600
(BC600)
evaluated.
Pots
(15
kg)
filled
with
silty-clay
Inceptisols
(SCInc),
silty-clay-loam
Alfisols
(SCLAlf),
loam
Aridisols
(LArid)
mixed
0
(control),
1,
2,
3
w/w%
BC300
BC600
540
days
incubation.
The
high
energy
moisture
characteristic
(HEMC)
data
was
modeled
using
modified
van
Genuchten
function
to
quantify
aggregate
stability
through
ratio
(SR)
index
(SSI).
available
(PAW),
least
limiting
range
(LLWR),
integral
capacity
(IWC)
calculated
two
matric
suctions
(h)
330
cm
for
field
(FC)
15,000
permanent
wilting
point
(PWP).
Then
(EI)
values
(EIIWC).
Results
indicated
that
incorporation
significantly
(p
<
0.01)
SR
(35
100%)
SSI
(21
28%)
indices
all
soils.
Biochar
modal
suction
(MS)
LArid
(5
158%);
whereas,
decreased
MS
other
(3
43%).
MS,
SR,
BC600-treated
not
different.
PAW,
LLWR,
IWC
SCInc
(18
61%,
8
44%,
6
35%)
SCLAlf
(8
18
35%,
20
47%)
(4
54%,
24
111%)
increasing
doses.
There
no
changes
EIIWC
biochar-treated
where
increased.
across
studied
1%
3.38
folds,
thereby
gradient
potential
absorb
water.
Soil
soil-biochar
mixtures
exhibited
heterogeneous
multimodal
(PSD).
promoted
PSD
peaks
related
water-transmitting
pores
while
soil.
In
conclusion,
results
among
applied
levels
biochar,
suggested
as
suitable
way
improve
behavior
stability.
Géotechnique,
Год журнала:
2024,
Номер
unknown, С. 1 - 15
Опубликована: Март 21, 2024
Literature
studies
are
presenting
counterposed
effects
of
vegetation
on
soil
hydraulic
behaviour.
Besides,
root
impacts
at
the
micro-scale
rarely
correlated
to
phenomenological
observations
due
complexity
adopting
up-scaling
factors.
In
this
study,
microstructural
causes
behind
observed
changes
in
vegetated
compacted
clayey
sand’s
and
volume
change
behaviour
were
explored.
Laboratory
experiments
carried
out
samples
seeded
with
Cynodon
dactylon.
Significant
water-saturated
permeability,
water
retention
shrinkage
upon
drying
after
growth.
measurements
complemented
by
quantification
morphological
features
for
different
states.
X-ray
scans
mercury
intrusion
porosimetry
allowed
cover
seven
orders
magnitude
pore
sizes,
shedding
light
fabric
soil–root
interface
clay
aggregate
scale.
The
roots
size
distribution
consisted
Multiphysics
phenomena:
fissure
generation,
void
clogging
aggregation
roots’
chemical
interaction.
Furthermore,
a
good
correlation
was
found
between
normalised
micro-pores
volume.
This
new
expression
included
framework
predict
considering
aggregated
structure
hydro-chemical
interactions.
Abstract
The
enhancement
of
saline
soil
yield
potential
by
biochar
was
well-documented,
but
the
changes
brought
particle
size
on
properties
and
crop
performance
are
not
well
understood.
To
investigate
in
tomato
due
to
under
varying
salt
stress,
we
conducted
a
pot
experiment
China
Northwest’s
solar
greenhouse.
A
total
nine
treatments
were
applied,
with
three
different
amounts
[S0
(no
salt),
S1
(0.3%
dry
weight),
S2
(0.6%
weight)],
B0,
B1,
B2
(0,
0.5%
large
particles
small
particles).
Adding
did
significantly
affect
measured
chemical
properties,
except
for
pH,
nitrogen
(TN),
Ca
2+
.
Specifically,
addition
increased
pH
TN,
while
reduced
2
⁺
content
likely
selective
adsorption
⁺.
Biochar
had
opposite
effects
stress
levels.
Compared
S0,
B1
19.1%
36.5%
higher,
whereas
B2,
33.1%
44.2%
lower
S2,
respectively.
Under
no
small-size
51.0%
compared
largely
improved
water
nutrient
status.
These
results
great
value
developing
better
strategies
adding
appropriate
into
soils
achieve
greater
productivity
gains.
Highlights
16.7–37.9%,
there
significant
difference
other
cations.
Large-size
alleviated
promoting
leaching
enhancing
nutrients.
Small
exacerbated
salinity
higher
treatments.
boosted
without
stress.
Graphical
