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不同来源腐殖酸对土壤酶活性的影响
贺婧 钟艳霞 颜 丽
Effect of Different Sources Humic Acid on Soil Enzyme Activity
中国农学通报 . 2009, (24): 258 -261 .  DOI: 10.11924/j.issn.1000-6850.2009-1799