Stable urea calcium sulfate adducts coated with base and urease inhibitor

Fertilizer granules comprising a core containing phosphoric acid and a urea adduct containing urea and calcium sulfate, and a coating containing a urease inhibitor and a base, the coating forming a coating on an outer surface of the core. Methods of making and using the fertilizer granules are also disclosed. 肥料颗粒，其包含含有磷酸和含有尿素和硫酸钙的尿素加合物的核，和含有脲酶抑制剂和碱的包衣，该包衣在核的外表面上形成包覆。还公开了制造和使用肥料颗粒的方法。