Biochar applied to Australian fields and left for a number of months cut such emissions by more than 70 percent as well as preventing nitrogen and ammonia from leaching out of the soil in water.

生物炭在澳大利亚使用后，几个月后，农田的碳排放量剧减70%多，与此同时，它还能阻止土壤里的氨氮溶入水体。

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The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.

缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。

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Opponents, including actor Mark Ruffalo, say the spray is poisonous, leaching radioactive and carcinogenic substances into the soil and water supply.

包括演员Mark Ruffalo在内的反对者，他们认为采集天然气的过程中，一些喷洒出的天然气是有毒的，而且会渗漏带有辐射性和致癌性的物质进入土壤和水源。

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And David Laird, of America's Department of Agriculture, showed that biochar even helped the rich soil of America's Midwest by reducing the leaching from it of a number of nutrients, including nitrate, phosphate and potassium.

ECONOMIST: Biochar could enrich soils and cut greenhouse gases as well