沙化退化土壤修复技术的研究进展和趋势

Advance and Future Trend in the Remediation Techniques of Sandy and Degerated Soil

介绍了我国沙化退化土壤的现状,总结了国内外沙化退化土壤修复技术的研究进展。按照修复手段将沙化退化土壤的修复技术分为植物修复技术、化学修复技术和微生物修复技术。植物修复技术是最基本、最重要的修复技术,主要从耕地的保护性耕作技术、退耕还林还草技术和草场封育技术三个方面进行讨论;化学修复技术主要从高分子材料和腐植酸的应用两方面加以讨论;微生物修复技术具有巨大的潜力,但目前尚未得到广泛的研究和应用。本文主要讨论微生物在沙化退化土壤修复中的作用以及生物腐植酸的应用前景。最后提出了我国沙化退化修复技术的发展趋势。

The status quo of sandy and degerated soil in China is introduced. The progress of the study on remediation techniques against the sandy and degerated soil at home and abroad is summarized. According to the different ways of remediation, the techniques are divided into three parts, including phytoremediation, chemical remediation and microbial remediation. Among them, the phytoremediation is the most basic and important one, which is discussed from three aspects： conservation tillage, replacing farmland with forest or grass and closing pasture,The applications of functional polymers and humic acid are discussed when it comes to chemoremediation. Microremediafion technique has a great potential, while by now, it haven＇t been extensively studied and applied, and we mainly discuss the functions of microbes and the application prospect of biological humic acid. The development trend towards the remediation techniques is proposed.