PREPARATION PROCESS AND FERTILIZER TO BE USED IN RECLAIMING DEGRADED SOIL

The invention relates to a fertilizer, to a process for preparing the same and to a method of application thereof for reclaiming degraded soils. According to the invention, the product has a humidity content of 35...45% and comprises 60...75% organic matter in relation to the dry matter, at least 1.5% total nitrogen, a C:N ratio of 12...20:1, at least 0.35% total phosphorus, 1.2% potassium, 0.6% magnesium, 0.4% calcium, 0.1% iron, respectively, and maximum 100 mg/kg copper, 500 mg/kg zinc, 1500 mg/kg manganese, respectively, at least 10% humic substances, at a pH of 6...8 and an apparent density of less than 750 kg/m. The process, as claimed by the invention, consists in aerobically composting a mixture of manure, carbonaceous mass, a microbiological biopreparation and nitrogen addition in amide, nitric and ammonia form, potassium alkali and salts of iron, copper, zinc, manganese and magnesium, at a temperature of 40...65°C, a humidity of 35...55%, an oxygen content of more than 8%, pH of 6...8.5, a C:N ratio of 20...40:1, at a composting time of 3...6 months. The method, as claimed, consists in applying the product by incorporating it into the soil in an amount of 20...100 t/ha. Invenţia se referă la un produs fertilizat, un procedeu de obţinere şi o metodă de aplicare a acestuia, pentru remedierea solurilor degradate. Produsul conform invenţiei are 35...45% umiditate, conţinând 60...75% materie organică raportată la material uscat, minimum 1,5% azot total, un raport C:N de 12...20:1, minimum 0,35% fosfor total, respectiv, 1,2% potasiu, 0,6% magneziu, 0,4% calciu, 0,1% fier, maximum 100 mg/kg cupru, respectiv, 500 mg/kg zinc, 1500 mg/kg mangan, minimum 10% substanţe humice,H de 6...8 şi o densitate aparentă sub 750 kg/mc. Procedeul conform invenţiei constă în compostarea aerobă a unui amestec de gunoi din zootehnie, masă cărbunoasă, un biopreparat microbiologic şi adaos de azot sub formă amidică, nitrică şi amoniacal, o alcalie de potasiu şi săruri de fier, cupru, zinc, mangan şi magneziu, la temperatura de 40...65°C, umiditate de 35...55%, conţinut de oxigen de peste 8%,H de 6...8,5, un raport C:N de 20...40:1, timp de compostare 3...6 luni. Metoda conform invenţiei constă în aplicarea produsului prin încorporare în sol în cantitate de 20...100 t/ha.