ため池底泥焼成物の緑化基盤としての活用に関する基礎的研究

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  • Fundamental Study on Utilization as Replanting Basis of Pond Bottom Sediment Burnt Products
  • タメイケ テイデイ ショウセイブツ ノ リョクカ キバン ト シテ ノ カツヨウ ニ カンスル キソテキ ケンキュウ

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Pond bottom sediment had been used extensively as a soil dressing on farms until a substitution of chemical fertilizer has been widespread since the world war II. However, recently, pond bottom sediment is hardly utilized as fertilizer. As the result, deterioration of water quality and decrease of reservoir volume have been caused by the excessive sedimentation of pond bottom sediment. The authors propose that pond bottom sediment is utilized as a replanting basis. A replanting basis is made from burning the pond bottom sediment by a high temperature. The physical property of the soil was compared with the burnt product and general replanting basis (Kanuma soil and Akadama soil, etc.) in order to examine the application of the replanting basis. As the result, it was proven that the physical property of the burn product changed into the equivalent one of the general replanting basis. Then, the pot test was carried out in the bermuda-grass using the burnt product. As a result of the pot test, it has been promoted the growth of the bermuda-grass and it has been excelled in the superiority of the utilization as a replanting basis.

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