【摘要】：以黑土為研究對象,采用室內培養(yǎng)方法,研究阿特拉津對黑土脲酶、轉化酶、多酚氧化酶影響,采用RAPD技術分析土壤微生物群落。結果表明,低濃度(25 mg·kg-1)阿特拉津對黑土脲酶活性有促進作用,中、高濃度(50~125 mg·kg~(-1))阿特拉津對黑土脲酶活性具有抑制作用且濃度越高抑制越明顯;阿特拉津抑制土壤轉化酶活性,培養(yǎng)結束時(35 d),抑制作用仍然存在;阿特拉津對多酚氧化酶活性表現(xiàn)為抑制-促進-恢復規(guī)律;阿特拉津輸入改變土壤微生物群落結構,濃度越高變化越明顯。
[Abstract]:The effects of atrazine on urease, invertase and polyphenol oxidase in black soil were studied by means of indoor culture. Soil microbial communities were analyzed by RAPD technique. The results showed that low concentration (25 mg kg-1) atrazin could promote urease activity in black soil, and high concentration (50 鈮，

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