Estimation of Land Carrying Capacity of Pig on Different Crops in Huang-Huai-Hai Region

CHEN Guang-yin, DONG Jin-zhu, CAO Hai-nan, WU Pei, HUANG Yan, WANG Yu, ZHENG Ru-ting, ZUO Lin, FANG Cai-xia, XIAO Qi

Journal of Ecology and Rural Environment . 2022, (6): 744 -754 . DOI: 10.19741/j.issn.1673-4831.2021.0352