Agriculture,
Journal Year:
2024,
Volume and Issue:
14(12), P. 2212 - 2212
Published: Dec. 3, 2024
Natural
superabsorbent
polymers
(SAPs)
were
essential
coating
materials
for
developing
slow-release
fertilizers
(SRFs)
due
to
low
cost
and
biodegradability.
However,
conventional
natural
SAPs
unsuitable
rice
systems
stability
short
period.
Herein,
a
SAP
with
semi-interpenetrating
polymer
network
was
prepared
by
poly
(γ-glutamic
acid)
(PGlu),
diatomite,
pullulan
polysaccharide
combined
biochar
develop
double-layer
co-coated
urea
systems.
The
results
indicated
that
diatomite
modification
significantly
improved
the
capacity
of
SAP,
significant
increase
in
average
fertilizer
15N
content
soil
profile
37.9
±
7.4%
14–56
days.
had
benefits
sustainability
system,
which
increased
plant
N
uptake
17.2
4.8%,
decreased
losses
30.4
7.2%,
grain
yield
9.88
3.6%.
More
importantly,
this
fully
degradable
its
decomposition
products
are
large
amounts
small-molecule
nutrients
could
provide
additional
C,
N,
Si
rice.
Therefore,
novel
SRF
may
emerge
as
greatly
promising
candidate
future
intensive
paddies.
