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Effects of Bentonite on Soil Enzyme Activity in Copper Contaminated Soil
贾峥嵘 李永山 郝佳丽 杨志国 刘秀珍 卜玉山
Journal of Agriculture . 2014, (8): 39 -42 .  DOI: 10.11924/j.issn.2095-4050.2013-xb0881