Research on the Creation of New Synergistic Nitrogen Fertilizer and its Application Effect on Maize
Using n-butyl phosphorothioic acid triamine(NBPT)and n-propyl phosphorothioic acid triamine(NPPT)as raw materials,a new form of microcrystalline suspension coating agent was prepared by wet sanding pro-cess and large grain urea coating treatment.They were designated as NBPTSC,NPPTSC and NBPTSC+NPPTSC(7:3).Field application results indicated that all new synergistic nitrogen fertilizers significantly improved corn yield and nitrogen utilization efficiency compared to urea.Among the treatments,NBPTSC+NPPTSC was the most effec-tive.These new efficient nitrogen fertilizers significantly increase corn yield and nitrogen uptake in black soil re-gions,reduce ammonia volatilization,and lower inorganic nitrogen residues in soil-crop systems,providing a theoret-ical basis for their promotion in black soil areas.
MaizeNitrogen fertilizer use efficiencySynergistic nitrogen fertilizerAmmonia volatilizationBlack soil
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