Analysis of Livestock and Poultry Breeding Based on the Nitrogen Nutrient Balance in Gong’an County
XIA Yanyang, LEI Shuyan, ZHANG Zhi, WU Chao, WANG Ran, ZUO Lu
Journal of Henan Agricultural Sciences . 2019, (12): 63 -72 .  DOI: 10.15933/j.cnki.1004-3268.2019.12.010