@article{oai:kpu.repo.nii.ac.jp:00004822,
 author = {石田, 雅士 and Ishida, Masashi and 傍島, 善次 and Sobajima, Yoshitsugu and 山本, 喜啓 and Yamamoto, Yoshihira},
 journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture},
 month = {Oct},
 note = {温州ミカンの異常落葉に関する基礎的な資料を得るために, 1965年から1967年にかけて砂耕試験により, 温州ミカン苗木を供試して, NならびにCa施用濃度の相違がMnの吸収におよぼす影響を調査した。1)生体重はN施用濃度が増すにしたがって減少する傾向が認められ, とくに細根重において顕著であった。Mn高濃度施用により生体重は減少したが, Ca高濃度の施用により, この傾向は軽減された。2)葉内Mn含量はMn施用濃度が高まるにしたがって増加し, N施用濃度が減少するにしたがって著しく増加した。しかしCa施用濃度の多少による相違は認められなかった。3)葉内P含量はMnおよびN施用濃度にあまり影響されず, Ca, Mg含量はMn施用濃度よりもN施用濃度に影響され, Mn施用濃度が高い場合, K, Ca含量はやや低下し, Mg含量だけが増加した。4)台木, pHの相違によるMn吸収の差異は認められなかった。5) Mnの部位別含量は細根に最も多く, 葉, 新梢, 中根, 幹の順であった。6)葉内Mn含量の多少による葉内Ni, Zn, CoおよびFe含量の相違は認められなかった。7) Mn施用濃度が高い場合, 根の呼吸活性は低下し, 葉内N組成は蛋白態Nが減少し, アミノ態Nおよびアマイド態Nが増加する傾向が認められた。, In order to investigate "Abnormal defoliation" of Satsuma orange trees, the experients were carried out from 1965 to 1967 on manganese absorption of Satsuma orange trees under sand culture. The results were as follows : 1) The plant growth decreased with high level of N concentration. Particularly, this tendency was recognized remarkably in the fibrous roots growth. With increasing Mn concentration, the growth decreased, whereas this tendency was depressed with high level of Ca. 2) The Mn content in the leaves increased with high level of Mn and greatly increased with decreasing level of N. This trend, however, was not noticed under Ca concentration. 3) The P content in the leaves was not affected by N or Mn concentration. The content of Ca and Mg was more affected by N concentration than Mn. The content of K and Ca reduced with high level of Mn concentration, but in this case only Mg content increased. 4) Under the various kinds of root stock and PH of solution, the Mn content in the leaves was not changed. 5) It was recognized that the fibrous roots in all parts of the trees involved the relative abundance of Mn and Mn content decreased in the order : leaves, shoots, middle roots and trunks. 6) The content of Ni, Zn and Cu in the leaves was not changed by Mn content. 7) With increasing Mn concentration, respiratory activity in the roots reduced. In this case, the content of protain-N in the leaves reduced, but Amino-N and Amide-N increased. It has been suggested that "Abnormal defoliation" of Satsuma orange trees is caused by excessive Mn absorption. From the above observations, however, "Abnormal defoliation" was not always caused by the simple factor. It is, therefore, presumed that various factors as declining of tree vigor will affect during a long period on "Abnormal defoliation" of Satsuma orange trees.},
 pages = {12--20},
 title = {砂耕試験による温州ミカンの異常落葉に関する研究(農学部門)},
 volume = {20},
 year = {1968},
 yomi = {イシダ, マサシ and ソバジマ, ヨシツグ and ヤマモト, ヨシヒラ}
}