Agronomy,
Год журнала:
2022,
Номер
12(10), С. 2313 - 2313
Опубликована: Сен. 26, 2022
Saline
water
irrigation
has
been
considered
a
useful
practice
to
overcome
the
freshwater
shortage
in
arid
and
semi-arid
regions.
Assessing
scheduling
appropriate
amount,
salinity,
timing
is
essential
maintaining
crop
yield
soil
sustainability
when
using
saline
agriculture.
A
field
experiment
that
included
two
levels
(traditional
deficit
irrigation)
three
salinities
(0,
5,
10
dS/m)
was
carried
out
North
China
Plain
during
2017/18
2018/19
winter
wheat
growing
seasons.
AquaCrop
used
simulate
optimize
for
wheat.
The
model
displayed
satisfactory
performance
simulating
volumetric
content
(R2
≥
0.85,
RMSE
≤
2.59%,
NRMSE
12.95%),
salt
0.71,
0.62
dS/m,
26.82%),
in-season
biomass
0.89,
1.03
t/ha,
18.92%),
grain
0.92,
0.35
7.11%).
proper
strategies
were
irrigations
of
60
mm
with
salinity
up
4
dS/m
each
at
jointing,
flowering,
grain-filling
stage
dry
year;
6
jointing
flowering
normal
one
8
wet
year,
which
could
achieve
over
80%
potential
while
mitigating
secondary
salinization.
Nonetheless,
tended
overestimate
moisture
production
but
underestimate
particularly
under
stress.
Further
improvements
solute
movement
stress
are
desired
facilitate
performance.
Future
validation
studies
long-term
data
also
recommended
obtain
more
reliable
use
better
identify
influence
irrigation.
Finally,
maintained
good
balance
between
simplicity,
preciseness,
user-friendliness,
be
feasible
tool
guide
Agricultural Water Management,
Год журнала:
2023,
Номер
286, С. 108391 - 108391
Опубликована: Июнь 2, 2023
Determination
of
relative
root-zone
water
depletion
(RRWD)
thresholds
to
trigger
irrigation
is
crucial
create
optimal
schedules
targeting
maximum
yield
and/or
productivity
with
limited
supply
for
a
crop.
In
this
study,
numerical
procedure
determine
RRWD
was
developed
through
coupling
AquaCrop
software
genetic-simplex
algorithms.
Using
two-year
field
lysimetric
experiment
winter
wheat
conducted
in
the
North
China
Plain
(NCP),
adequately
simulated
canopy
cover,
final
aboveground
biomass,
grain
yield,
seasonal
evapotranspiration,
and
soil
storage,
normalized
root
mean
squared
error
(NRMSE)
smaller
than
15
%
determination
coefficient
(R2)
larger
0.84.
The
global
optimum
range
preliminarily
determined
using
genetic
algorithm,
subsequently
were
optimized
by
fine
tuning
simplex
algorithm.
threshold
combinations
(composed
different
sequential
events)
varying
number
events
(i.e.1–4)
based
on
39
years
historical
meteorological
data,
effects
climate
change
crop
(Ya,
opt),
(WPopt),
(RRWDopt)
investigated.
results
indicated
that
both
Ya,
opt
WPopt
generally
increased
time
showing
tendency
gradually
elevated
annual
CO2
concentration
average
effective
temperature.
Irrespective
during
growing
season,
differences
RRWDopt
sequence
event
same
kind
hydrological
year
relatively
small,
variation
consistently
less
23
8
%.
When
applied
into
various
years,
sim)
(WPsim)
under
1–4
found
be
comparable
their
respective
optimums
WPopt),
all
values
sim
falling
92
%Ya,
(90
%WPopt).
Therefore,
should
helpful
formulate
rational
management
strategies
changing
climatic
conditions
NCP.
Journal of Integrative Agriculture,
Год журнала:
2023,
Номер
23(2), С. 680 - 697
Опубликована: Июнь 3, 2023
Integrated
water
and
fertilizer
management
is
important
for
promoting
the
sustainable
development
of
facility
agriculture,
biochar
plays
an
role
in
guaranteeing
food
production,
as
well
alleviating
shortages
overuse
fertilizers.
A
multi-objective
synergistic
irrigation-nitrogen-biochar
application
system
improving
tomato
yield,
quality,
nitrogen
use
efficiency,
greenhouse
emissions
was
developed
by
integrating
techniques
experimentation
optimization.
First,
a
coupled
plot
experiment
arranged.
Then,
yield
fruit
quality
parameters
were
determined
experimentally
to
establish
response
relationships
between
dosage
comprehensive
tomatoes
(TCQ),
irrigation
efficiency
(IWUE),
partial
productivity
(PFPN),
net
gas
(NGE).
Finally,
dynamic
optimization
regulation
model
resource
allocation
at
different
growth
stages
constructed
which
solved
fuzzy
programming
method.
The
results
showed
that
promoted
increase
IWUE
PFPN,
while
it
had
inhibitory
effect
on
NGE.
In
addition,
optimal
amounts
under
scenarios.
S1
scenario
increased
8.31%
compared
T2
treatment;
TCQ
S2
5.14%
T5
S3
10.01%
T3
PFPN
S4
9.35%
NGE
S5
decreased
11.23%
treatment.
coordination
multiple
objectives
considering
TCQ,
IWUE,
improved
average
4.44
69.02%
each
treatment
alone
when
irrigation,
205.18
mm,
186
kg
ha-1
43.31
t
ha-1,
respectively.
This
study
provides
guiding
basis
production
drip
fertilization
conditions.
Agronomy,
Год журнала:
2023,
Номер
13(2), С. 588 - 588
Опубликована: Фев. 18, 2023
Soil
salinization
induced
by
shallow
saline
groundwater
in
coastal
areas
can
be
managed
using
subsurface
pipe
drainage
(SPD)
for
agricultural
land
reclamation.
However,
a
reasonable
SPD
system
layout
should
comprehensively
consider
local
hydrological
conditions
and
crop
physiological
characteristics
based
on
long-term
model
evaluations.
The
objectives
of
this
study
were
to
test
the
applicability
growth
(AquaCrop)
simulating
winter
wheat
SPD-applied
fields
employing
water
table
behaviors
predicted
soil
hydrologic
HYDRUS.
Model
calibration
validation
field
observations
suggested
that
HYDRUS
accurately
distributions
water–salt
dynamics,
seasonal
variations
canopy
cover
biomass
production
AquaCrop
close
measured
values.
simulation
scenarios
considering
effect
salinity
(10.53,
21.06,
31.59
g
L−1
low,
medium,
high
levels),
drain
spacing
(10,
20,
30,
40
m,
no-SPD),
precipitation
category
(dry,
normal,
wet
year)
solute
transport,
grain
yield
(GY),
productivity
(WP),
supply
(GS)
further
explored
combination
AquaCrop.
results
indicated
narrowing
could
improve
desalination
performance
SPD,
but
there
was
no
continuous
downward
trend
concentration
during
application
when
constant.
0.81–1.65
t
ha−1,
0.13–0.35
kg
m−3,
6.06–31.03
mm
compared
no-SPD
scenarios,
such
increases
would
less
pronounced
dry
years
with
at
low
level.
This
demonstrated
co-application
models
is
feasible
method
revealing
effects
reclamation
areas.
Agriculture,
Год журнала:
2024,
Номер
14(8), С. 1269 - 1269
Опубликована: Авг. 2, 2024
The
development
of
a
crop
production
strategy
through
the
use
model
represents
crucial
method
for
assurance
stable
agricultural
yield
and
subsequent
enhancement
thereof.
There
are
currently
no
studies
evaluating
suitability
AquaCrop
drip
irrigation
Gossypium
barbadense
in
Southern
Xinjiang,
which
is
primary
planting
region
China.
In
order
to
investigate
performance
simulating
growth
cotton
under
mulched
irrigation,
was
locally
calibrated
validated
according
different
thresholds
during
key
period
two
years.
results
simulation
total
soil
water
(TSW),
evapotranspiration
(ETc),
canopy
coverage
(CC),
aboveground
biomass
(Bio),
seed
demonstrated
high
degree
correlation
with
observed
data,
root
mean
square
error
(RMSE)
<11.58%.
Bio
simulations
concordance
corresponding
measured
values,
values
1.23
t
ha−1
0.15
ha−1,
respectively.
However,
predicted
declined
verification
year,
though
prediction
remained
below
15%.
Furthermore,
estimated
(ETc)
value
slight
overestimation.
Generally,
middle
late
stages
led
an
overestimation
TSW
content.
less
than
13.99%.
Through
calculation
each
index
model,
it
found
that
they
acceptable
range.
conclusion,
can
be
employed
as
viable
tool
predicting
response
film
Xinjiang.
Based
on
64
years
historical
meteorological
three
were
selected
scenarios
simulation.
Principal
component
analysis
(PCA)
showed
that,
local
wet
year
quota
520
mm,
cycle
6
days/time.
normal
years,
dry
595
10
This
allowed
higher
yields
productivity,
well
maximization
net
revenue
arid
oasis
area
