Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 30, 2024
Abstract
Background
and
Aims
Effective
nitrogen
(N)
management
practices
are
essential
for
achieving
efficient
sustainable
agricultural
production.
The
purpose
of
this
study
was
to
improve
N
use
efficiency
(NUE)
minimize
loss
by
optimizing
the
rate
type
fertilizer
application,
while
maintaining
high
yield
maize.
Methods
A
two-year
field
experiment
with
U
(urea),
S
(slow-release
fertilizer),
SU
(Blending
U)
under
four
application
levels
(N1:
90
kg
ha-1,
N2:
120
N3:
180
N4:
240
ha-1)
conducted
investigate
their
effects
on
ammonia
(NH3)
volatilization,
residual
soil
nitrate
(NO3−-N),
yield,
NUE,
apparent
rainfed
Results
NH3
volatilization
in
were
38.46%
16.57%
lower
than
that
U,
respectively.
found
reduce
42.98%
62.23%.
decreased
NO3−-N
leaching
deep
soil,
increased
content
topsoil.
Compared
S,
significantly
plant
accumulation
NUE.
SUN4
achieved
maximum
maize
accumulation,
averaging
7968.36
ha-1
166.45
ha-1.
In
addition,
mixing
ratio
53%-58%,
which
best
Meanwhile,
fertilization
150-220
can
keep
Conclusion
findings
highlight
effectively
reduced
an
optimized
strategy
utilization
Plant Soil and Environment,
Journal Year:
2024,
Volume and Issue:
70(5), P. 253 - 262
Published: March 19, 2024
Partial
slow-release
fertiliser
substitution
for
urea
combined
with
water-saving
irrigation
may
synergistically
improve
rice
yield,
quality,
water,
and
nitrogen
(N)
utilisation.
A
field
experiment
to
evaluate
different
combinations
of
regimes:
alternate
wetting
drying
(AWD)
flooding
(FI),
N
strategies:
N0
(no
fertiliser);
N1
(100%
conventional
N2
SCF
–
sulphur-coated
N3
(70%
+
30%
urea),
N4
(50%
50%
urea)
on
efficient
production.
Results
indicated
that
higher
rates
(N2
N3)
increased
total
ammonia
in
surface
leachate,
soil
while
reducing
nitrate
relative
N1.
The
strategy
showed
the
highest
yields,
dry
matter,
uptake,
water
utilisation
due
a
nutrient
release
pattern
matched
growth
requirements.
AWD
yielded
5%
lower
than
FI,
except
strategy,
but
protein
content
by
12%,
amylose
dropped
17%.
structural
equation
model
analysis
suggested
positively
impacted
yield
influencing
N.
Our
findings
indicate
implementing
alongside
70%
basal
topdressing
can
optimise
quality
effectively
managing
resources
middle-lower
Yangtze
River
Basin.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(7), P. 2737 - 2737
Published: March 26, 2024
To
investigate
the
effects
of
straw
residues
with
reduced
nitrogen
(N)
fertilizer
on
greenhouse
gas
(GHG)
and
N
losses
in
paddy
fields,
we
conducted
a
field
experiment
during
two
growing
seasons
rice
systems
southern
China
to
evaluate
impacts
application
yield,
GHG
emissions,
ammonia
(NH3)
volatilization.
The
four
treatments
included
N100
(conventional
dose
fertilizer),
SN100
+
straw),
N60
(60%
conventional
SN60
straw).
We
found
that
yield
treatment
was
slightly
reduced,
but
partial
factor
productivity
applied
(PFPN)
significantly
increased
by
63.9%
compared
treatment.
At
same
rate,
soil
organic
C
(SOC),
methane
(CH4)
carbon
dioxide
(CO2)
global
warming
potential
(GWP),
intensity
(GHGI),
net
ecosystem
budget
(NECB),
decreased
N2O
emissions
NH3
Compared
fertilization
(N100),
(SN60)
volatilization
42.1%
23.9%,
GHGI
NECB
11.1%
18.3%,
respectively.
results
indicate
are
feasible
strategy
reduce
fields
while
increasing
sequestration.
Controlled
loss
urea
as
a
new
type
of
nitrogen
fertilizer
has
attracted
much
attention
due
to
its
significant
advantages
in
saving
labor
costs,
increasing
crop
yield,
improving
use
efficiency
(NUE),
and
protecting
ecological
environment
farmland.
However,
there
have
still
been
few
reports
on
mechanism
successive
controlled
application
affecting
NUE
economic
benefits.
A
six-year
field
located
experiment
at
the
same
(N)
level
with
240
kg
ha-1
per
season
from
2015
2021
was
conducted
systematically
study
effect
CLU
grain
soil
nutrients,
accumulation
NO3-
benefits
wheat
maize
rotation
farmland
Northern
China.
The
six
N
treatments
carried
out
trial
including
once-time
basal
during
cultivation
(CLU),
common
(U),
60%
plus
40%
topdressing
jointing
stage
(CLTU),
(UTCL),
(i.e.
traditional
fertilization,
UTU),
no
applied
control
(CK).
results
showed
that,
compared
CK,
across
6
consecutive
years
markedly
increased
yield
wheat,
annual;
UTU,
treatment
annual
by
4.7%-13.7%,
4.7%-13.7%
2.3%-11.4%,
respectively.
Furthermore,
8
positioning
test,
each
content
total
(TN),
organic
matter
(SOM)
inorganic
0-20
cm
topsoil
2.44%-48.14%,
0.43%-42.27%
0.82%-79.80%,
respectively,
especially
CLU,
UTU
CLTU
treatment,
performs
better
than
other
2021-2021
2022-2023.
In
addition,
also
found
that
mainly
accumulated
0-120
layer,
peak
value
appeared
80-100
cm,
significantly
lower
treatment.
Meanwhile,
after
planting,
agronomic
efficiency,
partial
factor
productivity
benefit
were
higher
those
Therefore,
current
context
shortages
research
area,
fertilization
can
not
only
increase
maize,
NUE,
but
improve
environment,
reduce
deep
layer
prevent
pollution
groundwater.
