Optimizing rice yield, quality and nutrient use efficiency through combined application of nitrogen and potassium oleh Guangyi Chen, Qiang Duan, Qiang Duan, Chaoyue Wu, Xingmei He, Mingming Hu, Congmei Li, Yuyuan Ouyang, Yuyuan Ouyang, Ligong Peng, Hong Yang, Qiuqiu Zhang, Qinggui Jiang, Yan Lan, Tian Li