生物质炭在农业上的应用

Application of biochar in agriculture

生物质炭是由生物质在完全或部分缺氧的条件下经过热裂解、炭化产生的一类高度芳香化、难溶性的固态物质。近年来,生物质炭作为土壤改良剂、肥料缓释载体在农业上的应用越来越广泛。为促进生物质炭在农业上的研究及应用,从生物质炭性质的影响因素,生物质炭对土壤物理性质、化学性质和微生物的影响,以及生物质炭对作物生长和产量的影响等方面进行了阐述和分析,并提出未来生物质炭在农业应用方面的研究方向。

Biochar is an insoluble solid matter with high aromatization produced by biomass pyrolysis in completely or partially hypoxic conditions. In recent years,biochar is widely used in agriculture as a soil amendment and controlled-release carrier for fertilizers. In order to boost the study and utilization of biochar in agriculture, this study summarized the factors that affect properties of biochar and its effects on soil physical and chemical properties, amount of microorganisms in soil, and growth and yields of crops. The future research issues were also suggested.