千葉大学熱川暖地農場の土壌の諸性質について : 第2報 有機物と微生物特性   :   Properties of Soil in Chiba University's Atagawa Farm. : II: Soil Organic Matter and Microbiological Properties 

作成者 犬伏, 和之, 岡崎, 正規, 豊田, 剛己, 手嶋, さぎり, 鈴木, 悠一, 秀島, 裕, 松島, 未和, 飯塚, 麻里代, 吉村, 英郎, 古市, 寛, 山口, 典子
作成者 (ヨミ) トヨタ, コウキ, テシマ, サギリ, スズキ, ユウイチ, ヒデシマ, ユタカ, マツシマ, ミワ, イイヅカ, マリヨ, ヨシムラ, ヒデオ, フルイチ, ヒロシ, ヤマグチ, ノリコ
作成者の別表記 Inubushi, Kazuyuki, Okazaki, Masanori, Toyota, Koki, Teshima, Sagiri, Suzuki, Yuuichi, Hideshima, Yutaka, Matsushima, Miwa, Iidzuka, Mariyo, Yosimura, Hideo, Furuichi, Hiroshi, Yamaguchi, Noriko
日本十進分類法 (NDC) 613.5
内容 The analysis of humic acid and microbiological characteristics of soils in Atagawa Subtropical Farm, Chiba University, was performed in 2000 by the five laboratories of Chiba University, Nihon University, Tokyo University of Agriculture and Technology and Meiji University. Soil samples were taken from the Site 2 and Site 4 of the Farm. Site 2 under evergreen broad leaf forest was located on the gentle slope, from a small ridge to valley, and soil materials were moved from the upper part of the site. The volcanic products at the Site 2 were affected by the upper horizons. The Site 4 consisted of volcanic products in the whole profile and utilized for the orchard (orange). Based on the humic acid analysis, such as the absorption curve of humic acid, Δlog K, RF and PQ, the humic acid from A horizon of the Site 2 and A1 horizon of the Site 4 were classified as B_+ type (B type humic acid showing specific peaks of P type humic acid) and A type, respectively. Total number of microorganisms, biomass nitrogen content, respiration amount and qCO_2 of the Site 4 sample were determined. Fungi in A horizon were highest, and they were lower in the deeper layers. Bacteria in Bw1 and BC horizon were higher than in shallower layers. Biomass C and N showed the highest values in A1 horizon, and lowered but there was no tendency in deeper layers. The qCO_2 in A2 horizon seemed relatively to be low. The factors influencing the activities of microorganisms in Site 4 were considered as following; 1) Site 4 was a part of slope. 2) Site 4 remained influence caused by the land-creation of this farm. 3) There was little water permeability in Bw horizon that was sticky. Both nitrate and ammonium were detected in deeper layers, not in A1 and A2, indicating that ammonium fixation by clay minerals takes places in subsurface layers.
公開者 千葉大学園芸学部
コンテンツの種類 紀要論文 Departmental Bulletin Paper
DCMI資源タイプ text
ファイル形式 application/pdf
ISSN 0069-3227
NCID AN00142658
掲載誌情報 千葉大学園芸学部学術報告 Vol.56 page.19-25 (20020329)
情報源 The technical bulletin of Faculty of Horticulture, Chiba University
言語 日本語
著者版フラグ publisher

Total Access Count:

636 times.

Related Materials in