^(14)C─绿黄隆结合残留物的微生物释放

Microbiological release of ^(14)C-chlorsulfuron bound residues from soil

研究利用微生物释放土壤中的^(１４)Ｃ─绿黄隆结合残留物．结果表明，在培育５ｄ后，有３４．４０％－４０．５５％的^(１４)Ｃ－结合残留物被释放出来，以可提取态存在于土壤溶液中，其数量在以后的试验过程中变化不大。微生物释放^(１４)Ｃ－结合残留物时，主要对存在于富里酸中的结合残留物产生作用。与对照相比，利用的微生物Ｂａｃｉｌｌｕｓ ｍｅｇａｔｅｒｉｕｍ和Ａｒｔｈｒｏｂａｃｔｅｒ ｓｐ．未表现出较强的释放能力。

Microorganisms were used to release ^(14)C-chlorsulfuron bound residues from soil. It was revealed that 34.40%-40.55% of total bound residues became extractable after incubation for 5 days, and the amounts of these residues changed slightly thereafter. It was also showed that those residues which existed in fulvic acid(FA) fraction of soil organic matter would be preferentially released by microorganisms. Compared with the control, two bacteria, Bacillus me gaterium and Arthrobacter sp., did not demonstrate a strong ability to release bound residues.