{"_buckets": {"deposit": "8da1cbf3-c92c-4bf7-8f62-bf8359d6fb0a"}, "_deposit": {"id": "2003250", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2003250"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02003250", "sets": ["1642837910423", "1642838407312"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "沖縄の石灰質土壌で栽培された秋植サツマイモに対するカリ肥料の効果(農芸化学科)", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Effects of Potassium Fertilization on the Yields of Sweet Potato Autumn Crop Grown on a Calcareous Soil of Okinawa(Department of Agricultural Chemistry)", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "大屋, 一弘", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "渡嘉敷, 義浩", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "石嶺, 行男", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Oya, Kazuhiro", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tokashiki, Yoshihiro", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Ishimine, Yukio", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "粘土鉱物にモンモリロナイトを含む石灰質土壌にサツマイモの秋作を1975年9月から1976年3月までと, 1976年9月から1977年2月までの2回にわたって栽培しカリ肥料の効果を試験した。栽培は琉球大学石嶺農場で行ない, 窒素(N)とりん酸(P_2O_5)はそれぞれヘクタール当たり150kgと75kgの割合で施用した。カリ(K_2O)施用量はヘクタール当たり0,150,300,450kgの割合とした。第1作と第2作のいずれについても塊根収量およびかずら収量に対するカリ施用の効果は認められなかった。ただし第1作で栽培期間が4か月のものと6か月のものを比較した場合に4か月のものがヘクタール当たり塊根収量20.1トン\u0026acd;20.9トンであるのに対し, 6か月のものは28.4トン\u0026acd;29.0トンであり明らかに栽培期間の長い場合に高い収量が示された。かずらの収量について同様な比較をすると逆の関係がみられた。栽培前と栽培後の土壌の置換性カリを測定した結果は栽培前と栽培後の対照区では置換性カリのレベルに大差はみられなかった。カリ施用区においては栽培後の置換性カリのレベルはカリ肥料の施用量と比例して高くなっていることが認められた。このようなことからこの実験に使用した土壌はカリ供給力が大きく, そのために施用カリ肥料に対するサツマイモの収量応答が得られなかったものと考えられる。", "subitem_description_type": "Other"}, {"subitem_description": "Two autumn crops of sweet potato were grown on a calcareous soil in the duration of September, 1975 to March, 1976 and September, 1976 to February, 1977. Potassium was applied to each crop at rates equivalent to 0,150,300 and 450kg/ha of K_2O, while nitrogen and phosphorus were applied at constant rates, 150kg/ha of N and 75kg/ha of P_2O_5,respectively. The yield response to applied potassium was not obtained neither from the first crop nor from the second crop. It, however, was proved in the first crop that the root tuber yields of 6-month growth period which ranged from 28.4 to 29.0 tons per hectare were much higher than those of 4-month growth period which ranged from 20.1 to 20.9 tons per hectare. From the obtained results, assumed was that a longer duration of growth is necessary for the sweet potato autumn crop to produce a higher yield of root tuber. The yields of vine did not show response to applied potassium but decreased as the duration of growth prolonged from 4 to 6 months. There was little difference between the levels of exchangeable potassium before and after cropping in the control plot. In the potassium treated plots, exchangeable potassium after cropping increased proportionally with the applied amounts. It was concluded that the soil used for the present experiment has a good capacity of suppling potassium, from which the poor response of the sweet potato to potassium fertilization resulted.", "subitem_description_type": "Other"}, {"subitem_description": "紀要論文", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "琉球大学農学部"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "eng"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/4236"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0370-4246"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250548"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "琉球大学農学部学術報告"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1977-12-01", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "24", "bibliographicPageEnd": "197", "bibliographicPageStart": "191"}]}, "item_1617258105262": {"attribute_name": "Resource Type", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_1617265215918": {"attribute_name": "Version Type", "attribute_value_mlt": [{"subitem_1522305645492": "VoR", "subitem_1600292170262": "http://purl.org/coar/version/c_970fb48d4fbd8a85"}]}, "item_1617605131499": {"attribute_name": "File", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "download_preview_message": "", "file_order": 0, "filename": "KJ00000162594.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2003250/files/KJ00000162594.pdf"}, "version_id": "9bb89dda-22d1-402c-b7f3-bef43d8a7efa"}]}, "item_title": "沖縄の石灰質土壌で栽培された秋植サツマイモに対するカリ肥料の効果(農芸化学科)", "item_type_id": "15", "owner": "1", "path": ["1642837910423", "1642838407312"], "permalink_uri": "http://hdl.handle.net/20.500.12000/4236", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2008-02-14"}, "publish_date": "2008-02-14", "publish_status": "0", "recid": "2003250", "relation": {}, "relation_version_is_last": true, "title": ["沖縄の石灰質土壌で栽培された秋植サツマイモに対するカリ肥料の効果(農芸化学科)"], "weko_shared_id": -1}