{"created":"2024-05-01T02:41:04.210697+00:00","id":2000237,"links":{},"metadata":{"_buckets":{"deposit":"75efd591-d35f-4673-952d-df3bbdcbcf1c"},"_deposit":{"created_by":74,"id":"2000237","owner":"74","owners":[74],"pid":{"revision_id":0,"type":"depid","value":"2000237"},"status":"published"},"_oai":{"id":"oai:jircas.repo.nii.ac.jp:02000237","sets":["1698892316070:1713762830049"]},"author_link":[],"item_30002_access_rights4":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_30002_bibliographic_information29":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-03-05","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"90","bibliographicPageStart":"75","bibliographicVolumeNumber":"88","bibliographic_titles":[{"bibliographic_title":"JIRCAS Working Report : Development of subsurface drainage and water-saving irrigation technology for mitigation of soil salinization in Uzbekistan","bibliographic_titleLang":"en"}]}]},"item_30002_creator2":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"OKUDA, Yukio","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"FUJIMAKI, Haruyuki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"KITAMURA, Yoshinobu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"KITAGAWA, Iwao","creatorNameLang":"en"}]}]},"item_30002_description9":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Secondary salinization of irrigated lands in Uzbekistan has been caused by excessive irrigation and rising groundwater levels due to the malfunction of drainage systems. Measures such as drainage system maintenance or leaching has been conducted, but there are fields where salinity levels remain high. The use of a shallow subsurface drainage system has been proposed to ensure the complete removal of percolation water after leaching, but it is considered to be an expensive option. Therefore, the possibility of introducing a drain drilling machine (Cut-drain) which has been developed recently in Japan, was studied. Employing Cut-drain has presented some problems because it rises up to the soil surface and causes the occurrence of preferential flow under dry soil conditions. In this study, we examined the soil moisture conditions suitable for the construction of Cut-drain and the effectiveness of a method for mitigating preferential flow. The results showed that there was a borderline soil moisture condition needed in the construction of Cut-drain. More than 9–11% moisture was required in the first soil layer (from the surface to 20 cm below it) and 12–15%, in the second layer (from 20 to 40 cm). Furthermore, it was found that the preferential flow could be mitigated by irrigating the furrows before construction.","subitem_description_language":"en","subitem_description_type":"Other"},{"subitem_description":"The above article was translated and reprinted from “Irrigation, Drainage and Rural Engineering Journal, Vol. 85, No. 2, pp. II_83-II 90 (2017)”, published by the Japanese Society of Irrigation, Drainage and Rural Engineering.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_30002_file35":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2024-05-01"}],"filename":"jircas_working_report88-_75-90.pdf","filesize":[{"value":"715KB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"label":"jircas_working_report88-_75-90","objectType":"fulltext","url":"https://jircas.repo.nii.ac.jp/record/2000237/files/jircas_working_report88-_75-90.pdf"},"version_id":"97be0685-64ed-40b7-a39a-3492086e4636"}]},"item_30002_geolocation20":{"attribute_name":"位置情報","attribute_value_mlt":[{"subitem_geolocation_place":[{"subitem_geolocation_place_text":"Uzbekistan"},{"subitem_geolocation_place_text":"ウズベキスタン"}]}]},"item_30002_identifier_registration17":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.34556/0002000237","subitem_identifier_reg_type":"JaLC"}]},"item_30002_language12":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_30002_publisher10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Japan International Research Center for Agricultural Sciences","subitem_publisher_language":"en"}]},"item_30002_relation18":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"en","subitem_relation_name_text":"Development of subsurface drainage and water-saving irrigation technology for mitigation of soil salinization in Uzbekistan"}],"subitem_relation_type":"isPartOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.34556/0002000227","subitem_relation_type_select":"DOI"}}]},"item_30002_resource_type13":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"book part","resourceuri":"http://purl.org/coar/resource_type/c_3248"}]},"item_30002_source_identifier22":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"1341-710X","subitem_source_identifier_type":"PISSN"},{"subitem_source_identifier":"AA11159468","subitem_source_identifier_type":"NCID"}]},"item_30002_subject8":{"attribute_name":"主題","attribute_value_mlt":[{"subitem_subject":"Salinization","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Subsurface drainage","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Cut-drain","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Soil moisture","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Preferential flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_30002_title0":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Problems and Measures for the Adoption of Cut-drain and Its Applicability to Soil Conditions in Uzbekistan","subitem_title_language":"en"}]},"item_30002_version_type15":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_title":"Problems and Measures for the Adoption of Cut-drain and Its Applicability to Soil Conditions in Uzbekistan","item_type_id":"40039","owner":"74","path":["1713762830049"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-05-01"},"publish_date":"2024-05-01","publish_status":"0","recid":"2000237","relation_version_is_last":true,"title":["Problems and Measures for the Adoption of Cut-drain and Its Applicability to Soil Conditions in Uzbekistan"],"weko_creator_id":"74","weko_shared_id":-1},"updated":"2024-05-28T01:45:54.718290+00:00"}