種子から発芽したヨシの成長過程における地上部および地下部現存量の変化

概要

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Various substance conversion of nitrification, denitrification and organic decomposition are performed in the rhizosphere of a reed, a kind of the emerging plant, by the soil microbe activated and supplied of the oxygen and the organic matters from its ground part. In this study, the growth of a ground and an under- ground part of the reed budding from the seed and the change of the soil in the rhizosphere was investigated in order to clarify the mechanism of the decomposition and the reduction of the soil in the rhizosphere. It was estimated that the increase rate of total biomass and its containing organic carbon was about 2.3 mg per day and 1.0 mg per day respectively from spring to summer, and that a ground part biomass of reed having the same stem thickness could be expressed with regression curve using its stem height. The rate of an active underground part to total biomass of a reed became smaller gradually since it was transplanted, and the value was about 0.45 at the time when the amount of a ground part became the maximum. More organic carbon in the reed-planting soil was suggested to be decomposed at the time when the growth of an under- ground part of reed is more active than a ground part.
福島工業高等専門学校の論文
2003-03-10