河北省北部寒区春秋季节密闭奶牛舍有害气体的时空分布规律研究
高玉红1, 杨学颖2, 李宏双1, 吴广军3,
Investigation of the harmful gases spatial and temporal distribution in closed dairy cattle houses in the cold regions in northern Hebei province
GAO Yu-hong1,YANG Xue-ying2,LI Hong-shuang1,WU Guang-jun3,
河北农业大学学报 . 2015, (4): 98 -101 .  DOI: 10.13320/j.cnki.jauh.2015.0092