(Thio)phosphoric triamide preparations with improved urease-inhibiting effect and urea-containing fertilizers containing the latter

摘要

Disclosed is a preparation comprising at least two different (thio)phosphoric triamides having structures according to the general formula R1R2N-P(X)(NH2)2 in which X is oxygen or sulfur, R1 is a C1-C10-alkyl, C3-C10-cycloalkyl, C3-C10-aryl or dialkylaminocarbonyl groups and R2 is hydrogen, or R1 and R2 together with the nitrogen atom linking them form a 5- or 6-membered saturated or unsaturated heterocyclic radical, which can optionally also comprise 1 or 2 further heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur, which (thio)phosphoric triamides differ in at least one of the radicals R1 or R2. Also disclosed are urea-containing fertilizers which include these preparations.