PROLONGED-ACTION VITRIFIED FERTILIZERS

摘要

FIELD: organomineral fertilizers. SUBSTANCE: fertilizers are made in the form of glass rod segments containing soluble vitrified phosphorus, potassium, and trace mineral compounds and provided with central channel filled with nitrogen-containing polymers. Fertilizer is active over 3-5 year period at temperatures 8 to 22 C. EFFECT: extended fertilizer application area.