preparation and characterization of slow-release fertilizer encapsulated by starch-based superabsorbent polymer - water absorbing gel
In order to improve the effectiveness of fertilizer, a new doublecoated slow-
Ethanol cellulose (EC)
As inner coating and starch-
Base High Water Absorption Resin (starch-SAP)
As an outer coating. For starch-
SAPs synthesized by twins
Roller mixer using starch from three plant sources, mesh size reduction and increase in the size of fractal gel on nanoparticlesscale (i. e.
, Increased the stretching of the 3D network)
Helps to improve water absorption capacity at a reduced absorption rate, thereby improving slow absorption
Release properties of fertilizers.
Fertilizer particles coated with starch-
Slow display at SAP
Compared to urea particles without and without EC coating, in the soil the particles are further coated with starch
SAP showed a decrease in nitrogen release rate, especially potato starch-
SAP coating showed stable release behavior for more than 96 hours.
So this work shows this new slow-
Release fertilizer system to improve fertilizer effectiveness.