Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Дек. 13, 2022
Abstract
Deep
fertilization
has
been
tested
widely
for
nitrogen
(N)
use
efficiency
but
there
is
little
evidence
of
its
impact
on
N
leaching
and
the
interplay
between
climate
factors
crop
use.
In
this
study,
we
effect
three
fertilizer
placements
greenhouse
gas
(GHG)
emissions,
leaching,
growth
in
a
lysimeter
experiment
over
33-month
period
comprised
years
with
spring-sown
cereals
(S1,
S2,
S3)
preceding
11-month
(F1)
subsequent
15-month
(F2)
fallow
period.
addition
to
control
no
(Control),
100
kg
ha
−
1
year
ammonium
nitrate
was
placed
at
0.2
m
(Deep),
0.07
(Shallow),
or
halved
(Mixed).
reduced
leachate
amount
each
except
F1,
significant
reductions
(p
<
0.05)
drought
(S2)
cumulatively
S1-S3.
Overall,
water
flow
by
22,
25
34%
compared
Shallow,
Mixed
Control,
respectively.
across
S1-S3
further
loads
15%
significantly
lowest
among
fertilized
treatments
S1
S2.
S3,
increased
grain
yields
28
22%
Shallow
Mixed,
respectively,
while
maintaining
high
content
nearly
doubling
agronomic
(AE
)
recovery
(RE
).
placement
promising
mitigation
practice
that
should
be
investigated.
Journal of Integrative Agriculture,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 1, 2024
Nitrogen
(N)
serves
as
an
essential
nutrient
for
yield
formation
across
diverse
crop
types.
However,
agricultural
production
encounters
numerous
challenges,
notably
high
N
fertilizer
rates
coupled
with
low
use
efficiency
and
serious
environmental
pollution.
Deep
placement
of
nitrogen
(DPNF)
is
agronomic
measure
that
shows
promise
in
addressing
these
issues.
This
review
aims
to
offer
a
comprehensive
understanding
DPNF,
beginning
succinct
overview
its
development
methodologies
implementation.
Subsequently,
the
optimal
fertilization
depth
influencing
factors
different
crops
are
analyzed
discussed.
Additionally,
it
investigates
regulation
mechanism
underlying
DPNF
on
development,
yield,
greenhouse
gas
emissions.
Finally,
delineates
limitations
challenges
this
technology
provides
suggestions
improvement
application.
valuable
insight
reference
promotion
adoption
practice.
Nutrient Cycling in Agroecosystems,
Год журнала:
2023,
Номер
126(2-3), С. 213 - 228
Опубликована: Май 14, 2023
Abstract
Deep
fertilization
has
been
tested
widely
for
nitrogen
(N)
use
efficiency
but
there
is
little
evidence
of
its
impact
on
N
leaching
and
the
interplay
between
climate
factors
crop
use.
In
this
study,
we
effect
three
fertilizer
placements
leaching,
growth,
greenhouse
gas
(GHG)
emissions
in
a
lysimeter
experiment
over
consecutive
years
with
spring-sown
cereals
(S1,
S2,
S3).
Leaching
was
additionally
monitored
an
11-month
fallow
period
(F1)
preceding
S1
15-month
(F2)
following
S3.
addition
to
control
no
(Control),
100
kg
ha
−1
year
ammonium
nitrate
placed
at
0.2
m
(Deep),
0.07
(Shallow),
or
halved
(Mixed).
reduced
leachate
amount
each
cropping
period,
significant
reductions
(
p
<
0.05)
drought
(S2)
cumulatively
S1-S3.
Overall,
by
22,
25
34%
compared
Shallow,
Mixed
Control,
respectively.
across
S1-S3
further
loads
15%
significantly
lowest
among
fertilized
treatments
S2.
S3,
increased
grain
yields
28
22%
Shallow
Mixed,
respectively,
while
nearly
doubling
agronomic
(AE
)
recovery
(RE
).
placement
promising
mitigation
practice
that
should
be
investigated.
