二氯喹啉酸污染土壤生物修复的研究现状与发展方向

Progress and Development Direction of Bioremediation for Quinclorac-contaminated Soil

为有效控制除草剂二氯喹啉酸对后茬作物的危害,恢复农田的种植能力,介绍了二氯喹啉酸的作用机理以及危害烟草等作物生长的原因,简述了采用物理、化学及生物法修复二氯喹啉酸残留土壤的研究进展,分析并指出3类方法的优势与不足。深入剖析了生物法降解二氯喹啉酸所取得的研究成果,提出外源微生物的安全性难以保障、缺少多菌种协同修复及相关机理研究,以及如何处理基因工程与生物修复的关系等问题是掣肘二氯喹啉酸生物修复走向实际应用的关键。上述问题的解决可能成为二氯喹啉酸污染土壤生物修复研究的发展方向。

In order to reduce the impact of herbicide-quinclorac to the after-reap crops and restore the farmland’s capacity to support farming, this paper gave a brief introduction to the weed control mechanism of quinclorac and reviewed the recent progresses of the remediation techniques for quinclorac-contaminated soil, which were categorized into physical, chemical and biological techniques, pointing out the pros and cons of three methods. Furthermore, research on biodegradation of quinclorac conducted was discussed. The safety of exogenous microbes, the lack of researches on synergetic remediation of co-strains consortia and the usage of gene engineering microbes in bioremediation are the critical questions in putting the bioremediation techniques into practical application. Through the researches on above problems, the bioremediation techniques of quincloraccontaminated soil may be developed.