In a dusty field in Kitui, eastern Kenya, farmers are being taught how to construct small, semi-circular barriers of earth that control the flow of water, slowing its run-off.
But it is the idea of using biochar to remove carbon dioxide from the atmosphere on a semi-permanent basis that has caused people outside the field of agriculture to take notice of the stuff.
但是用生物炭半永久性地消除大气中的二氧化碳，引起了农业界之外人们的关注。
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Field experiments was used to study the change of soil N2O discharge flux in the northwestern arid and semi-arid areas.