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PROBLEM TO BE SOLVED : To provide a maintenance-free greening method, and to provide a greening material capable of surely reducing carbon dioxide on the earth.
SOLUTION : This maintenance-free greening method comprises fixing carbon dioxide absorbed from the earth as carbon through carbonizing early growing bamboo and burying the carbonized bamboo charcoal in the underground as the greening material so as to increase water holding property and air permeability in the ground and bring an effective result on plant growth. Since the bamboo charcoal does not reburn, the method is an absolute carbon dioxide-fixing method.
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