日無人運補太空船 NASA考慮採購

日無人運補太空船 NASA考慮採購

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更新日期:2008/07/21 04:09
〔編譯鄭曉蘭綜合報導〕美國航太總署（ＮＡＳＡ）為因應國內太空梭即將於二○一○年除役，考慮購買

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incomplete organic pyrolysis, e.g., from cooking fires, are thought to be the key component of the terra preta soils associated with ancient indigenous communities of the Amazon basin.[6] Terra preta is much sought by local farmers for its superior fertility compared to the natural red soil of the region. Efforts are underway to recreate these soils through biochar, the solid residue of pyrolysis of various materials, mostly organic waste.

Biochar improves the soil texture and ecology, increasing its ability to retain fertilizers and release them slowly. It naturally contains many of the micronutrients needed by plants, such as selenium. It is also safer than other "natural" fertilizers
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