Development and experimental analysis of an annular slit pneumatic granular fertilizer flow rate detection device based on fertilizer flow convergence technique. - Xinhe Shan; Bingxin Yan; Xiaofei An; Changhai Luo; Liwei Li; Yanxin Yin; Qingzhen Zhu; Zhijun Meng; Guangwei Wu (Comput. Electron. Agric., 2026)