Sunflower response to potassium fertilization and nutrient requirement estimation
LI Shu-tian, DUAN Yu, GUO Tian-wen, ZHANG Ping-liang, HE Ping, Kaushik Majumdar
Journal of Integrative Agriculture . 2018, (12): 2802 -2812 .  DOI: 10.1016/S2095-3119(18)62074-X