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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Biochar in agriculture - prospects and related implications
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Biochar in agriculture - prospects and related implications

机译：农业生物炭-前景及相关影响

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Sequestration of atmospheric carbon to the soil is a challenging task for the scientific community to mitigate the rising concentration of atmospheric carbon dioxide (CO2). Biochar, due to its aromatic structure and long mean residence time in the soil (more than 100 years) has the potential for long-term carbon sequestration in the soil. The trend obtained from the meagre published literature raised our hopes of achieving the goal of enhancing the productivity of different crops along with environmental sustainability. According to an estimate, global production of black carbon has been reported between 50 and 270 Tg yr(-1), with as much as 80% of this remaining as residues in the soil. Biochar decomposition rate is slow in the soil, which indicates that it could be the possible answer to mitigation of elevated atmospheric CO2. It is reported that black carbon can produce significant benefits when applied to agricultural soils in combination with some fertilizers. Increase in crop yield to the tune of 45-250% has been reported by application of biochar along with chemical fertilizers. Soil water retention properties, saturated hydraulic conductivity and nutrients availability increased with the application of biochar. Biochar application reduced CO2 respiration, nitrous oxide and methane production, and decreased dissipation rate of herbicide in the soil.
机译：将大气中的碳固存到土壤中对于缓解科学界减轻大气中二氧化碳（CO2）浓度上升的挑战是一项艰巨的任务。生物炭由于其芳香结构和在土壤中的平均停留时间长（超过100年）而具有长期固碳的潜力。从微薄的出版文献中获得的趋势使我们寄希望于实现提高各种作物的生产率以及环境可持续性的目标。据估计，据报道全球黑碳产量在50至270 Tg yr（-1）之间，其中多达80％残留在土壤中。土壤中生物炭的分解速度很慢，这表明它可能是缓解大气中二氧化碳含量升高的可能方法。据报道，黑碳与一些肥料一起施用到农业土壤上时可以产生巨大的效益。据报道，与生物肥料一起施用生物炭可将农作物的产量提高45-250％。随着生物炭的应用，土壤保水性能，饱和导水率和养分利用率增加。生物炭的施用减少了二氧化碳的呼吸，一氧化二氮和甲烷的产生，并降低了除草剂在土壤中的耗散率。

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