A rate and application method of nitrogen for rice seedling in row-seeding box for mechanical transplanting

abonado de cobertera abonado de fondo abonado fraccionado abonos nitrogenados abonos npk application methods application rates apport en couverture bac de germination basal dressings caja de semillero dose d'application engrais npk equipment equipo fumure de fond nitrogen fertilizers npk fertilizers oryza sativa plantule repiquage seed boxes seedlings split dressings transplanting trasplante