生物炭对连作障碍影响的研究进展

Research Progress on the Effects of Biochar on Continuous Cropping Obstacles

为改善连作土壤障碍,多种活性物质被应用于连作土壤中,其中生物炭因其孔隙结构丰富、含碳率高、理化性质稳定、比表面积大等特点在培肥改土、提高土壤生产力、改善土壤结构等方面取得了一系列研究成果。本文从生物炭的概念及特点、连作障碍发生的原因、生物炭对连作土壤理化性质及微生物的影响效果等方面展开综述,对生物炭施用缓解土壤连作障的效果做出总结,并对生物炭在今后的土壤理化性质改良等方面的研究进行展望。

In order to improve soil barriers in continuous cropping,many active substances were applied to continuous cropping soil,among whi ch biochar has achieved a series of research results in improving soil fertility,productivity,and structure due to its rich pore structure,high carbon content,stable physicochemical properties,and large specific surface area.This article reviewd the concept and characteristics of biochar,the causes of continuous cropping obstacles,and the effects of biochar on the physical and chemical properties of continuous cropping soil and microorganisms.It summarized the effectiveness of biochar application in breaking soil continuous cropping obstacles,and prospected for research on the improvement of soil physical and chemical properties using biochar in the future.