施設栽培土壤の塩類集積対策としてのイネ科飼料作物の利用 : 第2報 イネ科飼料作物による塩類の吸収及び収穫物の土壤中での分解   :   Cultivation of Forage Grasses as a Remedy for Excessive Salt Accumulation in Soils of Plastic Greenhouse : II. Salt Absorption by Forage Crasses from Soils and Decomposition of the Harvests in Soils 

作成者 嶋田, 典司, 佐藤, 幸夫, 芦原, 昭一, 大泉, 久一, 高崎, 康夫, 金成, 善一, 野島, 博
作成者 (ヨミ) シマダ, ノリツグ, サトウ, ユキオ, アシハラ, ショウイチ, オオイズミ, ヒサカズ, カナリ, ゼンイチ, ノジマ, ヒロシ
作成者の別表記 SHIMADA, Noritsugu, SATO, Yukio, ASHIHARA, Shoichi, OIZUMI, Hisakazu, TAKASAKI, Yasuo, KANARI, Zenichi, NOJIMA, Hiroshi
日本十進分類法 (NDC) 620
内容 施設栽培でしばしば問題となる土壤の塩類集積を防止する対策の一つとして, イネ科飼料作物の夏季短期栽培について検討した.また青刈した収穫物を有機質資材として利用するために, 土壤中における養分の無機化についてモデル実験を行なった.塩類濃度の異なる4段階の土壤を充てんしたポットに栽培されたトウモロコシ, ソルゴー, シコクビエ, ローズグラスのうちで肥料成分の吸収が最も多かったのはトウモロコシであった.シコクビエは乾物生産量は劣ったが, 各元素の含有率が高いために吸収量はトウモロコシにつぎ, ソルゴーと同程度であった.イネ科飼料作物の栽培により土壤のECは低下し, その値は作物の養分吸収量と対応していた.トウモロコシとソルゴーの地上部収穫物を土壤に添加し, 無機化に関する室内実験を行なった結果, 2草種とも20日間のインキュベーションでは土壤の無機態窒素の有機化を促進し, 30日間でもトウモロコシ添加区ではブランクの土壤よりも無機態窒素量は減少した.一方植物体のカリウムは速やかに土壤中に溶出してくることがわかった.
Cultivation of Forage Grasses as a Remedy for Excessive Salt Accumulation in Soils of Plastic Greenhouse. II. Salt Absorption by Forage Grasses from Soils, and Decomposition of the Harvests in Soils. Noritsugu SHIMADA, Yukio SATO, Shoichi ASHIHARA, Hisakazu OIZUMI, Yasuo TAKASAKI, Zenichi KANARI and Hiroshi NOJIMA. Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No.26 : 15-21, 1979. Short term cultivation of forage grasses in summer with pot experiment was examined as a countermeasure to prevent salt accumulation in soils, which frequently occured in the growth under structure. Four species of forage grasses (corn, sorgo, African millet and rhodesgrass) were cultivated on the soils in which the salt concentrations were varied into four nutrient levels. The greatest absorption of salts was observed in corn. Dry matter yields of African millet was much smaller than that of corn, but the total amount of salts absorbed by a single plant of this species was next to corn and nearly equal to that of sorgo, having relatively high concentration of each elements. EC values of soil solutions were lowered down by the cultivation of the forage grasses, corresponding to the amount of salts absorbed by the crops. Model experiments on the mineralization of the harvests in soils were carried out to evaluate them as a organic material for soil improvement. During 20 days of incubation, both corn and sorgo added into soils accelerated the organization of inorganic nitrogen which was previously contained in the soils or derived from themselves in this period. Even 30 days of incubation, the amount of inorganic nitrogen in the corn-added soil was less than that in blank soil. It was recognized that potassium contained in forage grasses was rapidly dissolved into soils after incubation.

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.26 page.15-21 (19790228)
情報源 The technical bulletin of Faculty of Horticulture, Chiba University
言語 日本語
著者版フラグ publisher

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