РАЗРАБОТКА ТЕХНОЛОГИИ ПОЛУЧЕНИЯ ФОСФОРНОГО КОМБИНИРОВАННОГО УДОБРЕНИЯ ИЗ БИОГЕННЫХ ДИАТОМИТОВЫХ ПОРОД АРМЕНИИ И ИССЛЕДОВАНИЕ ЕГО ЭФФЕКТИВНОСТИ

There are limited raw material resources (apatites) for manufacturing phosphorus fertilizers. The studies have disclosed that the phosphorus fertilizers can be also produced from the phosphorus-containing biogenic diatomite rocks widely spread in Armenia. A technology of manufacturing a complex phosphorus fertilizer (phosphorus + iron + amorphous silicon dioxide) from the mentioned rocks has been developed. According to the results of trials on maize and spring barley the recommended fertilizer exceeds the superphosphates in its efficiency; anyhow, the technology of fabricating the discussed fertilizer still needs to be improved.