@article{tang_xiao_tang_wang_li_cheng_2017,  title={Returning Winter Cover Crop Residue Influences Soil Aggregation and Humic Substances under Double-cropped Rice Fields},  volume={41},  ISSN={0100-0683},  url={https://doi.org/10.1590/18069657rbcs20160488},  DOI={10.1590/18069657rbcs20160488},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Tang, Haiming and Xiao, Xiaoping and Tang, Wenguang and Wang, Ke and Li, Chao and Cheng, Kaikai},  year={2017},  pages={e0160488} }