西北地区成乳牛粪尿中N、P、Cu、Zn产污系数的对比分析
张振伟,周玉香,张巧娥,闫宏
Comparative Analysis of Pollutant-producing Coefficients of N, P, Cu and Zn in Feces and Urine of Adult Dairy Cows in Northwest Areas of China
畜牧与饲料科学
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2013, (12): 25
-25
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DOI: 10.12160/j.issn.1672-5190.2013.12.009
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