| 摘要 |
FIELD: agriculture, obtaining fertilizers. ^ SUBSTANCE: the method suggested deals with supplementing materials to aqueous viscous paste or powder of ammonium phosphate to control the release of nutrients chosen out of the following lest: montmorillonite, granulated montmorillonite, lignin containing alkaline lignin and lignosulfonate, or acidified zeolite, acidified montmorillonite, acidified granulated montmorillonite, acidified lignin containing acidified alkaline lignin and acidified lignosulfonate. Content of materials that provide controlled release of nutrients in fertilizer corresponds to 3-35% against the weight (based upon dry weight of ammonium phosphate powder), and content of water after condensation corresponds to 25-35% against the weight (based upon dry weight of ammonium phosphate viscous paste). It is possible to acidify the mixture of ammonium phosphate and materials that provide controlled release of nutrients before condensation with sulfuric acid. Application of the suggested fertilizer increases the efficiency in digesting nutrients by plants, activity period of the fertilizer is more prolonged and its cost has been decreased. ^ EFFECT: higher efficiency of application. ^ 10 cl, 8 ex |
