Zhang, Jing Sheng [Effects of controlled release blend bulk urea on soil nitrogen and soil enzyme activity in wheat and rice fields]. [electronic resource] - Ying yong sheng tai xue bao = The journal of applied ecology Jun 2017 - 1899-1908 p. digital Publication Type: Journal Article ISSN: 1001-9332 Standard No.: 10.13287/j.1001-9332.201706.003 doi Subjects--Topical Terms: AgricultureFertilizersNitrogenOryzaSoilTriticumUrea