Determination on Outdoor Stocking Density of Free-range Broilerin Different Ecosystems Based on Nitrogen CyclingChaowu Yang, Mohan Qiu, Longhuan Du, Zengrong Zhang, Xiaoyan Song, Xia Xiong, Chenming Hu, Li Yang and Chunlin YuE3S Web Conf., 245 (2021) 02018DOI: https://doi.org/10.1051/e3sconf/202124502018