1. Bao, S. D. (2000). Soil and agricultural chemistry analysis. Beijing: China Agriculture Press (in Chinese).
2. Edmondson, J. (2006). Flora of China 8: Brassicaceae through Saxifragaceae. Botanical Journal of the Linnean Society, 152, 132–132.
3. Hao, Z. B., Cang, J., & Xu, Z. (2006). Plant physiology experiment. Harbin: Harbin Institute of Technology Press (in Chinese).
4. He, J., Lin, L. J., Ma, Q. Q., Liao, M. A., Wang, X., Liang, D., Xia, H., Lai, Y. S., Tang, Y., Chen, S. X., & Wang, L. (2016). Effects of mulching accumulator straw on growth and cadmium accumulation of Cyphomandra betacea seedlings. Environmental Progress & Sustainable Energy, 36, 366–371.
5. Hörtensteiner, S., & Kräutler, B. (2011). Chlorophyll breakdown in higher plants. Biochimica et Biophysica Acta (BBA)-Bioenergetics, 1807, 977–988.