Ji, Pengtao, Yujuan Peng, Yongwei Cui, Xiangling Li, Peijun Tao, and Yuechen Zhang. 2022. “Effects of Reducing and Postponing Controlled-Release Urea Application on Soil Nitrogen Regulation and Maize Grain Yield”. International Journal of Agricultural and Biological Engineering 15 (1):116-23. https://doi.org/10.25165/ijabe.v15i1.6888.