The present invention is focused on the preparation of enriched porous aggregates for improving the nutrition of plants in soils with limitations or chemical phases (a low or high pH, an elevated concentration of carbonates, sodium and another chemical species or unfavorable condition for nutrition). The preparation includes fragments of porous materials, preferably rounded, of microscopic size (from some millimeters to several centimeters), which mass allows an acidified solution to be stored (for alkaline soils) of alkalinized (for acid soils) and highly concentrated in the nutrients of interest, mainly micronutrients. The porous materials may have a vitreous nature, or may be minerals or natural rocks such as pumice stone, tezontle stone and others. The acids may be strong minerals (nitric, sulfuric, hydrochloric) or organics (citric, acetic). The nutrients, especially micronutrients, are added to the solution as sulfates, nitrates, oxides or chlorides, for mentioning some of them . The treated fragments may be coated with waxes or polymers of low degradation, and may be applied in band or points in a superficial manner, or applied by flight or broadcasting and then incorporated to the radicular zone, for constituting a long-lasting nutritive reserve, which would be available for the roots of different crops.La presente invención se centra en la preparación de agregados porosos enriquecidos que permite mejorar la nutrición de las plantas en suelos con limitaciones o fases químicas (pH alto o bajo, elevada concentración de carbonatos, sodio u otra especie química o condición desfavorable para la nutrición). La preparación incluye fragmentos de materiales porosos preferentemente redondeados, de tamaño macroscópico (desde unos milímetros hasta varios centímetros) cuya masa permite almacenar una solución acidificada (para suelos alcalinos) o alcalinizada (para suelos ácidos) y altamente concentrada en los nutrientes de interés, especialmente micronutrientes. Los mate
