DIN EN ISO 15685:2021 土质. 潜在硝化和硝化抑制作用的测定. 采用氨氧化的快速试验(ISO 15685-2012); 德文版本EN ISO 15685-2020
Soil quality - Determination of potential nitrification and inhibition of nitrification - Rapid test by ammonium oxidation (ISO 15685:2012); German version EN ISO 15685:2020