施用生物质炭对土壤肥力和作物生长的影响

生物质炭是近年来被农业与环境等领域关注的物质，因其有机碳含量高且稳定性强，比表面积较大，负电荷及电荷密度较高，对土壤养分的吸附能力较强，能够提高土壤有机碳含量，改善土壤理化性状，被众多学者推荐为能同时满足农田固碳和增加土壤养分的改良剂。文章总结了生物质炭对土壤结构、土壤肥力和作物产量等方面的研究进展，对需要进一步研究的问题进行讨论。

Effects of biochar on soil fertility and crop growth

In recent years, biochar has attracted more and more attentions from the areas of agriculture and environment because of the characteristics of high content of organic carbon, strong stability, big specific surface area and higher negative charge and electric density. Biochar can absorb the nutrients in soil and improve the soil organic carbon content so that soil physical and chemical properties can be enhanced. So it is recommended as an ameliorant with the efficiencies of carbon sequestration and soil nutrient improvement by many scholars. The paper reviewed some research progresses in the effects of biochar application on soil structure, fertility and crop growth, and the problems related with biochar application in agriculture that need further study were discussed.