Impact of maize residues decomposition on aggregate turnover
Yu Li,
Yu Fu,
Jinzhong Xu
и другие.
Geoderma,
Год журнала:
2024,
Номер
443, С. 116827 - 116827
Опубликована: Фев. 22, 2024
The
decomposition
of
maize
residues
has
a
vital
influence
on
soil
aggregate
buildup–breakdown
(turnover)
processes,
but
the
following
remain
unclear:
i)
which
size
aggregates
Mollisols
are
primarily
affected
by
and
ii)
turnover
proportions
these
aggregates.
In
study,
rare
earth
oxides
(REOs)
were
used
to
trace
quantify
paths
fractions
during
whole
incubation
time.
two
treatments
designed
as
follows:
REO-labelled
with
addition
(maize
residue
treatment)
without
(control,
CK).
respiration,
distribution,
REO
concentrations,
SOC
pH
measured
84
days
incubation.
results
showed
that
0–14,
incorporation
significantly
increased
respiration
promoted
formation
2–5
mm
0.25–2
at
expense
<0.25
On
14–84,
continued
promote
reduced
breakdown
fractions.
At
end
incubation,
mm,
0.053–0.25
<0.053
formed
into
5.1
%,
5.7
6.4
respectively,
in
treatment,
broken
decreased
23.2
%
compared
those
CK
treatment.
larger
was,
greater
buildup
rate
treatment
was
largest
increasing
time,
reaching
529.3
mainly
transferred
(buildup
or
breakdown)
organic
matter
contents
0–42.
This
study
provides
reference
for
impact
structure.
Язык: Английский
Optimal Level of Straw Addition After the Autumn Harvest for Black Soil Aggregate Stability
Land Degradation and Development,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
ABSTRACT
In
Northeast
China,
straw
residues
are
integrated
into
fields
to
improve
the
soil
structure
and
fertility
after
autumn
harvest.
However,
optimal
amount
of
addition
is
unclear.
To
determine
whether
an
increase
in
correlated
with
aggregate
stability,
study
focused
on
black
cropland
was
conducted
through
field
incubation
experiment
(lasting
150
days)
during
seasonal
freeze–thaw
periods,
implemented
six
different
treatments:
CK
(0%),
SA1
(1%,
i.e.,
10
g
per
kg
soil),
SA3
(3%),
SA5
(5%),
SA7
(7%),
SA9
(9%).
The
results
revealed
that
under
conditions,
stability
significantly
increased
only
when
≥
5%.
At
this
level,
enhanced
two
ways.
First,
decomposition
SOC
content,
which
serves
as
a
binding
substance
for
aggregates
promotes
formation
>
0.25
mm.
Second,
particles
combined
form
straw‐soil
composite
macro‐aggregates
exhibited
high
water
stability.
not
positively
amount.
This
because
5%
sufficient
reach
carbon
saturation,
content
showed
no
significant
change
further
increasing
addition.
Moreover,
excessive
led
nitrogen
limitation
slowed
down
rate
but
also
wasted
resources.
Therefore,
improving
These
findings
provide
theoretical
basis
how
rational
design
return
measures,
thereby
conditions
spring
sowing
seedling
emergence
China.
Язык: Английский
The Effects of Apple Growers’ Adoption of Straw Returning Technology
Sustainability,
Год журнала:
2024,
Номер
16(20), С. 8983 - 8983
Опубликована: Окт. 17, 2024
This
study
investigates
the
economic
and
ecological
impacts
of
straw
returning
technology
among
apple
growers
in
Shaanxi
Gansu
provinces,
China.
Using
Propensity
Score
Matching
(PSM)
survey
data,
findings
reveal
that
significantly
increases
farmers’
incomes
by
20.33%
compared
to
those
who
do
not
adopt
technology.
Additionally,
mitigates
soil
fertility
decline
11.07%,
offering
substantial
benefits.
The
heterogeneity
analysis
highlights
older
farmers
benefit
more
from
terms
both
income
improvement,
likely
due
their
experience
reliance
on
farming.
Smaller-scale
also
show
greater
gains
health,
while
larger-scale
farms
face
complexities
may
delay
visible
However,
land
fragmentation
did
influence
outcomes.
recommends
promoting
through
enhanced
farmer
training,
financial
incentives,
improved
access
credit.
Policymakers
should
consider
tailoring
support
different
demographics
orchard
sizes.
Future
research
focus
long-term
evaluations
returning’s
sustainability
crop
yields.
Overall,
offers
a
promising
solution
for
enhancing
returns
environmental
production.
Язык: Английский
Interaction of Straw Mulching and Nitrogen Fertilization on Ammonia Volatilization from Oilseed Rape–Maize Rotation System in Sloping Farmland in Southwestern China
Plants,
Год журнала:
2024,
Номер
14(1), С. 14 - 14
Опубликована: Дек. 24, 2024
Ammonia
(NH3)
volatilization
caused
by
urea
application
has
negative
implications
for
human
health,
environmental
quality,
and
the
value
of
nitrogen
fertilizers.
It
remains
to
be
investigated
how
management
strategies
should
adopted
not
only
reduce
NH3
but
also
improve
use
efficiency
(NUE)
in
agriculture
industry
at
present.
Hence,
a
two-year
field
trial,
including
subplots,
was
conducted
simultaneously
evaluate
effects
mulching
treatments
(NM:
non-mulching;
SM:
straw
mulching)
different
fertilizer
(U:
urea;
U
+
NBPT:
plus
1%
N-(n-butyl)
thiophosphoric
triamide;
CRU:
mixture
controlled-release
3:7
ratio;
OF:
commercial
organic
ratio)
on
volatilization,
crop
production,
NUE
an
oilseed
rape–maize
rotation
system
sloping
farmland
purple
soil
southwestern
China
between
2021
2023.
Compared
with
NM
U,
losses
under
NBPT,
CRU,
OF
decreased,
average,
64.13%,
17.39%,
15.09%
during
rape
growing
season
64.01%,
11.67%,
10.13%
maize
season,
respectively.
An
average
increase
35.65%
straw-mulching
treatment
recorded
while
this
parameter
showed
10.69%,
comparison
U.
With
combination
fertilizer,
contrastingly,
reduction
achieved
SM
treatments.
When
compared
difference
significant
season.
The
around
4.27%
higher
NBPT
(p
<
0.05).
treatments,
consistently
lower
values
yield-scaled
were
noted:
13.15–65.66%
10.34–67.27%
Furthermore,
annual
emission
factors
(AEFs)
14.01%,
5.81%,
12.14%,
11.64%,
Overall,
mulching,
along
urea,
found
optimal
strategy
effectively
emissions
areas
southern
China.
Язык: Английский