改性生物炭在盐碱地修复中的应用

Application of Modified Biochar in Saline-Alkali Land Remediation

生物炭在农业生产中来源广、产生量大,且因具有化学稳定性高、有利于微生物繁殖等特点,在盐碱地修复中得到了广泛的应用。为提高其对盐碱土壤的改良效果,对生物炭进行改性以提高其对土壤的修复和治理能力已成为当今的研究热点。本文对常见的生物炭改性方法进行了总结,综述了改性生物炭在盐碱地修复中的研究现状,探讨了生物炭改良中出现的问题,发现其可对盐碱土的理化特性如:土地的孔隙、含水量、有机质以及养分浓度等方面做出改变。在盐碱土中应用生物炭肥料,能更好地促进农作物的生长,从而助力绿色农业的发展。

Biochar has a wide range of sources and large production in agricultural production, and has been widely used in saline-alkali land restoration because of its high chemical stability and favorable microbial reproduction. In order to improve its improvement effect on saline-alkali soil, the modi-fication of biochar to improve its ability to remediate and treat soil has become a research hotspot today. In this paper, the common biochar modification methods are summarized, the research status of modified biochar in saline-alkali land restoration is reviewed, the problems arising in biochar improvement are discussed, and it is found that it can change the physical and chemical characteristics of saline-alkali soil, such as porosity, water content, organic matter and nutrient concentration. The application of biochar fertilizer in saline-alkali soil can better promote the growth of crops, thereby contributing to the development of green agriculture.