APPLICATION OF NEWLY DEVELOPED SEWAGE SLUDGE FERTILIZER IN TEA CULTIVATION
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- KATAHIRA Tomohito
- 鹿児島工業高等専門学校 都市環境デザイン工学科
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- GATA Ryuhei
- 鹿児島工業高等専門学校 専攻科 建設工学専攻
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- Shido Haruka
- 鹿児島工業高等専門学校 専攻科 建設工学専攻
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- Nakakawaji Kouyou
- 鹿児島県農業開発総合センター
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- UEZONO Ichiro
- 鹿児島県農業開発総合センター
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- YAMADA Masayoshi
- 鹿児島工業高等専門学校 都市環境デザイン工学科
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- KURODA Kyohei
- 産業技術総合研究所 生物プロセス研究部門
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- YAMAGUCHI Takashi
- 長岡技術科学大学 技術科学イノベーション専攻
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- YAMAUCHI Masahito
- 鹿児島工業高等専門学校 都市環境デザイン工学科
Bibliographic Information
- Other Title
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- 新規下水汚泥肥料の茶栽培への適用
Abstract
<p> In this study, in order to clarify the characteristics of the newly developed sewage sludge fertilizer (NSSF) using sewage sludge and regional biomass for tea cultivation, the optimum fertilization amounts (ratios) of NSSF, the optimum fertilizer application period, and the amount of nitrogen leaching to groundwater were investigated. In the tea cultivation test using the NSSF, the tea yields were equal to or better than those of the conventionally fertilized areas, indicating that the NSSF can replace rapeseed cake (conventional organic fertilizer) as a fertilizer (24kgN/10a fertilization out of the maximum annual fertilizer nitrogen amount of 50kgN/10a). The concentration of metals and heavy metals in the NSSF-fertilized soil did not change significantly during the tea cultivation tests, and the values were below the soil environmental standard. When NSSF was fertilized in spring or autumn/spring, the fresh leaf yield and crude tea quality were equal to or better than those of organic mixed fertilizer were obtained. Compared with the control (conventional organic fertilizer), the NSSF had a lower nitrate nitrogen concentration in the infiltrated water (fertilization in autumn and spring : 15-30mg/L, control: 35-100mg/L), indicating that the environmental load is lower than that of the conventional farming system.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 79 (25), n/a-, 2023
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390580947975138560
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed