Different impact was found on the enzymatic activities for Mn treatment alone and Mn-Cd combined contamination. 結果表明，錳單一污染與錳鎘復合污染對土壤酶活性產(chǎn)生的影響有所不同。
Combination contamination of heavy metals is one of important soil contamination types. 重金屬復合污染是主要土壤污染類(lèi)型之一。
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