Deep placement of nitrogen fertilizer increases rice yield and nitrogen use efficiency with fewer greenhouse gas emissions in a mechanical direct-seeded cropping system
Li Lin, Tian Hua, Zhang Minghua, Fan Pingshan, Ashraf Umair, Liu Haidong, Chen Xiongfei, Duan Meiyang, Tang Xiangru, Wang Zaiman, Zhang Zheng, Pan Shenggang
The Crop Journal . 2021, (6): 1386 -1396 .  DOI: 10.1016/j.cj.2020.12.011