Agronomy,
Год журнала:
2024,
Номер
14(10), С. 2219 - 2219
Опубликована: Сен. 26, 2024
The
rice–crab
co-culture
(RC)
system
is
a
multidimensional
integrated
farming
model
with
significant
potential
for
balancing
ecological
and
economic
benefits
in
paddy
fields.
However,
improper
nitrogen
(N)
fertilizer
application
exacerbates
greenhouse
gas
(GHG)
emissions,
degrades
water
quality,
disrupts
the
balance
of
RC
ecosystem.
Therefore,
optimizing
improving
N
management
strategies
crucial
to
maximize
its
benefits.
This
study
conducted
two-year
field
experiment
assess
impact
on
productivity,
sustainability,
systems.
Comparisons
were
made
compare
rice
crab
productions,
GHG
net
ecosystem
benefit
(NEEB)
between
monoculture
(RM)
systems
under
different
rates
(0,
150,
210,
270
kg
ha−1)
aim
identifying
optimal
rate
system.
results
showed
that
210
ha−1
improved
agronomic
traits
use
efficiency,
leading
0.4%
increase
yield
(7603.1
compared
maximum
RM
at
ha−1.
At
this
rate,
surface
quality
was
crabs,
resulting
highest
yields
(370.1
average
weights
(81.1
g).
lower
reduced
intensity
(GHGI)
by
13.7%
NEEB
reached
8597.5
CNY
ha−1,
which
1265.7%
higher
than
In
summary,
conserves
resources,
increases
yields,
reduces
thereby
synergistically
enhancing
both
Optimizing
has
greater
other
innovative
models,
efficiency
should
be
further
investigated.
Agricultural Water Management,
Год журнала:
2024,
Номер
298, С. 108839 - 108839
Опубликована: Апрель 30, 2024
Iron
(Fe)
and
methane
(CH4)
emissions
play
crucial
roles
in
the
carbon
cycling
of
paddy
field
ecosystems.
However,
little
is
known
about
effect
mechanism
Fe
transformation
on
CH4
emission
from
fields,
especially
with
different
water
management
methods.
In
this
study,
dynamic
changes
forms
soil
organic
content
were
observed
fields
under
flooded
irrigation
(FI)
water-saving
(WSI)
(including
intermittent
(II)
controlled
(CI)).
addition,
structural
equation
model
was
used
to
clarify
response
relationship
between
ions
fields.
The
results
indicate
that
cumulative
WSI
reduced
by
29.03–61.29
%.
reasons
are
as
follows
(i)
increased
oxidation
ability
increasing
ferric
iron
(Fe3+)
fields;
(ii)
could
reduce
substrate
utilization
methanogens
transforming
oxide
increase
binding
capacity
dissolved
carbon,
which
production.
compared
II,
CI
had
higher
Fe3+
content,
Fe-bound
lower
acetate
so
it
production
capacity.
summary,
promotes
direct
indirectly
reduces
facilitating
combination
oxides
substrates.
These
findings
deepen
our
understanding
mechanisms
provide
new
insights
for
research
sequestration
reduction
This
research
was
to
examine
the
impacts
of
long-term
rice-crayfish
coculture
systems(RS)
on
soil
nutrients,
carbon
pools,
and
rice
yields
in
paddy
fields
,
aiming
establish
a
scientific
basis
for
sustainable
development
RS
northern
region
Zhejiang.
The
results
showed
that
change
from
monoculture
(CK)
resulted
24.99%
increase
5-year
average
ammonium
nitrogen(AN),
while
nitrate
nitrogen(NN),
available
potassium(AK),
phosphorus
content(AP)
decreased
by
28.02%,
16.05%,
28.76%
respectively.
Moreover,
total
organic
carbon(TOC),
easily
oxidizable
carbon(EOC),
dissolved
carbon(DOC),
microbial
biomass
carbon(MBC)
2.45%,
8.82%,
35.31%,
65.84%
Correlation
analysis
there
significant
positive
correlation
between
NN,
EOC
MBC
RS.
In
terms
yield,
yield
has
8.4%
compared
CK.The
planting
early-maturing
varieties
reduced
13.16%,
late-maturing
6.00%.
conclusion,
enhancing
water
nutrient
management
cultivating
late
maturing
are
essential
strategies
achieving
Soil Science & Plant Nutrition,
Год журнала:
2024,
Номер
unknown, С. 1 - 21
Опубликована: Июнь 15, 2024
'All
we
are
is
a
lot
of
talking
nitrogen'
stated
by
an
American
playwright,
Arthur
Miller,
precisely
expressing
the
crucial
nature
nitrogen
for
ecosystem.
On
one
hand,
deficiency
limits
food
production
in
developing
areas,
while
excessive
compromises
soil
fertility,
human
health,
and
agricultural
environmental
sustainability
industrialized
world.
other
more
than
half
applied
soils
usually
lost
to
environment
terms
nitrous
oxide
(N2O)
emissions,
ammonia
(NH3)
volatilization,
nitrate
(NO3)
leaching.
Therefore,
it
required
increase
use
efficiency
plants
improve
crop
production,
save
raw
materials
used
produce
fertilizers,
mitigate
adverse
effects
on
health
environment.
This
multidisciplinary
review
highlights
natural
synthetic
sources
nitrogen,
emission
different
regions,
applications,
toxicity
economic
aspects
management
approaches
such
as
biological
fixation,
4
R
strategy,
enhanced
nitrification
inhibitors,
digital
mapping
context
sustainable
development
goals
(SDGs).
Agricultural Water Management,
Год журнала:
2024,
Номер
302, С. 108956 - 108956
Опубликована: Июль 26, 2024
Ratoon
rice
utilizes
the
axillary
buds
sprouting
from
remaining
stubble
of
main
crop
after
harvest
to
form
panicles,
enabling
a
second
harvest.
However,
mechanized
harvesting
often
resulted
in
damage
stubbles
rolling
zone,
potentially
leading
reduced
yield.
Enhancing
number
tillers
zone
through
optimized
agronomic
measures
was
crucial
for
achieving
higher
research
on
water
and
fertilizer
management
corresponding
low
ratoon
under
limited.
A
two-factor
experiment
conducted
assess
impacts
regimes
(flooded;
alternate
wetting
drying)
nitrogen
(0
kg
N
ha−1;
Tiller
promotion
90
Split
application:
60
ha−1
+
Booting
stage
30
ha−1)
yield
formation,
greenhouse
gas
emissions,
carbon
footprint
rice.
The
results
indicated
significant
effects
Compared
single
application
tiller-promoting
coupled
with
continuous
flooding
(N-FL),
drying
(SN-AWD)
significantly
increased
average
annual
by
25.4
%.
SN-AWD
ability
basal
first
nodes
compared
N-FL.
soil
quality
index
ecosystem
multifunctionality
an
32.37
%
10.16
times,
respectively,
This
increase
enhancements
root
length
surface
area,
consequently
improving
pre-anthesis
post-anthesis
dry
matter
accumulation
ultimately
enhancing
Although
N2O
emissions
N-FL,
CH4
cumulative
decreased
37.86
over
two
years,
23.02
reduction
total
38.62
per
unit
grain.
attained
maximum
net
economic
benefit
(NEEB),
increasing
35.42
Overall,
comprehensive
analysis
suggested
that
sustainable
approach
beneficial
balancing
season
yields,
environmental
footprint,
benefits.
Agronomy,
Год журнала:
2024,
Номер
14(5), С. 1071 - 1071
Опубликована: Май 18, 2024
The
rice–crayfish
rotation
system
(RCR),
originating
in
the
Jianghan
Plain,
is
developing
rapidly
various
regions
of
China
and
has
been
characterized
by
unbalanced
regional
development,
which
also
led
to
widespread
concerns
discussion
on
its
environmental
impacts
sustainability.
This
study
selects
representative
RCR
production
areas
including
Jianli,
Qianjiang,
Shishou,
Shayang,
Gong’an
Honghu,
analyze
resource
inputs,
utilization
efficiency,
sustainability
employing
emergy
analysis
method.
Our
Gong’an,
Shishou
Shayang
reports
total
inputs
ranging
from
6.46
×
1016
8.25
1016,
with
renewable
rates
between
78.38%
84.34%.
leads
unit
value
(5.58
10−1)
yield
ratio
(5.30).
evaluation
finds
that
loading
0.19
0.28
index
for
sustainable
development
varies
1.27
3.00.
indicates
southern
have
higher
southeastern
showing
lower
impact
We
underscore
non-renewable
resources
outcomes
sustainability,
suggesting
tailored
strategies
system’s
optimization
growth.
Land,
Год журнала:
2024,
Номер
13(7), С. 1001 - 1001
Опубликована: Июль 6, 2024
Since
the
21st
century,
rice–crayfish
fields
have
been
widely
distributed
in
Yangtze
River
Basin
China.
However,
spontaneous
construction
of
these
by
farmers
has
given
rise
to
issue
field
fragmentation
(RCFF)
certain
areas.
This
study
introduced
a
novel
method
for
evaluating
RCFF
using
township-level
administrative
regions
as
evaluation
units.
Three
key
elements,
including
five
landscape
indices,
were
employed:
area
and
edge
metrics
(rice–crayfish
ratio),
shape
(perimeter–area
ratio
distribution),
aggregation
patch
density,
percentage
like
adjacencies,
contagion
index).
The
was
quantified
its
spatial
distribution
pattern
analyzed
through
entropy
GIS
analysis.
Empirical
studies
conducted
Qianjiang
city
yielded
insightful
results:
(1)
contribution
elements
ranked
descending
order
follows:
>
metrics.
(2)
Yunlianghu
farm
lowest
at
0.06,
while
Yangshi
subdistrict
2
highest
0.94.
exhibited
distinct
trend,
showing
gradual
decrease
from
northeast
southwest
Qianjiang,
low-RCFF
southwest.
system
enables
local
government
decisionmakers
comprehend
current
status
management
construction.
It
facilitates
scientific
planning
layouts
provides
guidance
their
expansion
strategies.
can
be
promoted
counties
(cities)
where
are
primarily
Basin,
promoting
transition
traditional
agriculture
environmentally
friendly
Frontiers in Sustainable Food Systems,
Год журнала:
2024,
Номер
8
Опубликована: Авг. 29, 2024
Mitigating
agricultural
carbon
emissions
is
pivotal
for
attaining
the
objectives
of
peak
and
neutrality.
Utilizing
a
time-varying
parametric
Cobb-Douglas
(C-D)
production
function,
this
study
employs
an
enhanced
Logarithmic
Mean
Divisia
Index
(LMDI)
decomposition
approach,
Tapio
decoupling
model,
Monte
Carlo
simulations
to
investigate
determinants
dynamics
within
Sichuan
Province
from
2010
2020.
The
findings
reveal
that:
(1)
Factors
such
as
emission
intensity,
structure,
labor
inputs,
capital
stock
played
significant
role
in
suppressing
emissions,
collectively
contributing
reduction
484.12
million
tonnes.
(2)
unstable
economic
development
Province.
Capital
stock,
alongside
intensity
significantly
contributed
decoupling.
To
harmonize
growth
with
reduction,
emphasis
should
be
placed
on
manure
management
resource
utilization
livestock
poultry
farming.
Furthermore,
leveraging
technological
advancements
enhance
efficiency
crucial
reducing
emissions.
Simultaneously,
strategic
fixed
asset
growth,
focused
energy
conservation,
can
catalyze
synergistic
effects
spillovers.