Encapsulating granular fertilizers with polymeric material is a new approach to improve nutrient uptake of crops and to reduce environment pollution by fertilization. In this research, polymer-coated urea and polymer-coated monoammonium phosphate developed by our own were employed and their membrane structures were studied. Meanwhile, simulation and pot culture experiments were conducted on crops fertilized by them and tests were carried out on the release and transport of nutrients in them and t...
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