Effects of DA-6 on Phosphorus and Potassium Uptakes of Tomato Seedlings under Cadmium StressShiyao Shan, Wanjia Tang, Xuemei Peng, Jing Lu, Han Liu and Huanxiu LiE3S Web Conf., 165 (2020) 02003DOI: https://doi.org/10.1051/e3sconf/202016502003