{"created":"2023-06-19T10:26:30.954000+00:00","id":5093,"links":{},"metadata":{"_buckets":{"deposit":"9044e271-6093-433e-8ecd-4619936ba95b"},"_deposit":{"created_by":18,"id":"5093","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"5093"},"status":"published"},"_oai":{"id":"oai:muroran-it.repo.nii.ac.jp:00005093","sets":["41:227"]},"author_link":["22687"],"item_81_date_granted_17":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2011-09-29"}]},"item_81_degree_grantor_10":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"室蘭工業大学"},{"subitem_degreegrantor_language":"en","subitem_degreegrantor_name":"Muroran Institute of 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mm未満の土壌粒子は陽イオンよりも陰イオンを吸着しやすいことがわかった。富良野盆地南部に位置する平坦部の畑地圃場において，pH(H2O)と硫酸イオン含有量の深さ方向分布に反比例関係が見られた。十勝岳泥流跡地である富良野川およびヌッカクシ富良野川から東へ離れるほど硫酸イオン含有量が少なくなる傾向にあることがわかった。沈降法の一種である浮力秤量法により球形ガラスビーズ，JIS試験用粉体，マグネサイト，軽焼マグネシア，玉ねぎ畑の土壌について粒径分布を測定し，篩い分け法，レーザー回折散乱法と比較した。富良野盆地地区の平坦部にあるがんがい排水施設を備えた一般的な圃場と既設暗渠利用型の地下かんがいシステムを備えた圃場の違いを明らかにすることを目的として，土壌のpH(H2O)，EC，土壌硬度，強熱減量，硫酸イオン含有量の深さ方向分布を検討した。一般的ながんがい排水施設を備えた圃場と地下かんがいシステムを備えた圃場を比較すると，pH(H2O)，EC，土壌硬度，強熱減量の深さ方向分布および季節変化に大きな違いは見られなかった。硫酸イオン含有量は，地下かんがいシステムを備えた圃場の場合は春期に比べて秋期の方が若干大きいが，両圃場とも深さ方向分布はほぼ一様であった。給水方法の違いは土壌特性に大きな変化を起こさないことがわかった。地下かんがいシステムを備えた圃場に供給する流量を測定するため，堰式・オリフィス式・筒型流量計を設計した。導入流量は液高さによって測定できる。スケールアップにより設計した堰式・オリフィス型流量計を用いて富良野盆地での現地試験を行った。本研究で設計した流量計によって農業用水の導入流量を測定できる。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_81_dissertation_number_13":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第313号"}]},"item_81_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15118/00005084","subitem_identifier_reg_type":"JaLC"}]},"item_81_subject_9":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"500","subitem_subject_scheme":"NDC"}]},"item_81_text_12":{"attribute_name":"学位の種別","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"課程博士"}]},"item_81_text_14":{"attribute_name":"報告番号","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"甲第313号"}]},"item_81_text_15":{"attribute_name":"学位記番号","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"博甲第313号"}]},"item_81_text_16":{"attribute_name":"研究科・専攻","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"工学研究科・建設工学専攻"}]},"item_81_version_type_24":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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