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鉢栽培における培養土と施肥に関する研究 : 第3報 かん水方法が肥料成分の溶脱に及ぼす影響   :   Studies on Composts and Fertilization in Pot-Plant Cultivation. : III. Effects of Irrigation Methods on the Leaching of Fertilized Nutrients through the Composts. 

作成者 佐藤, 幸夫, 嶋田, 典司, 浅香, 裕, 小島, 道也
作成者 (ヨミ) サトウ, ユキオ, シマダ, ノリツグ, アサカ, ヒロシ
作成者の別表記 SATO, Yukio, SHIMADA, Noritsugu, ASAKA, Hiroshi, KOJIMA, Michiya
日本十進分類法 (NDC) 613
内容 同一用土(田土:腐葉=7:3混合土)を用いてかん水方法, かん水間隔の相違による施肥成分の動向を検討した.pHは全体として実験開始後1ヵ月まで低下しその後上昇する傾向を示した.かん水間隔によって大差はなく, 肥料間では速効性肥料区より緩効性肥料区で高く, 有機質肥料区は高いpH値を維持した.窒素は全溶脱水量が一定の場合, 速効性肥料および緩効性肥料でも全期間中に100%溶脱されたが, かん水間隔がせまい程前期(1ヵ月)に溶脱する割合が多くなった.かん水時の溶脱水量一定の処理も同様の傾向であったが, 溶脱量は全溶脱水量一定処理よりも少なかった.NH_4-Nは40日目でほぼ出つくし, その後はNO_3-Nが主体となり, 緩効性肥料区では約70%がこの形態で溶脱した.有機質肥料の場合はいずれの場合も溶脱率は5割に達しなかった.リン酸は大部分土壌に吸着され, ほとんど溶脱しなかった.カリの溶脱は窒素溶脱量に比較し施肥に対する溶脱比が小さく, かん水間隔を広げるほど溶脱率は減少した.溶脱水のカチオン・アニオンのバランスはかん水方法のいかんにかかわらず一定で, その値は1:1(r=+0.994)であった.
Studies On Composts and Fertilization in Pot-Plant Cultivation. III. Effects of Irrigation Methods on the Leaching of Fertilized Nutrients through the Composts. Yukio SATO, Noritugu SHIMADA, Hiroshi ASAKA and Michiya KOJIMA. Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No.22: 33-39, 1974. The specific objectives of study was to elucidate the nutrient movement by different irrigation quantity and interval in the same constituent composts. PH values of leached solution tended to decrease during 30 days from the beginning of this experiment, while afterward increased considerably. In each cases of fertilizer form, the irrgigation intervals had no significant effect on pH value. PH value of leached solution through the compost added quickly available fertilizer, and higher value of pH was observed in the case of applying organic fertilizer. When the total amount of leached soluiton was kept constant throughout this experiment, the rate of leached nitrogen was high in both cases of quickly and slowly available fertilizers, the rate of early leached nitrogen, however, was increased with shortening irrigation interval. When the amount of leached solution was kept constant in every irrigation time, total leached nitrogen was less than that in constant total leached solution. NH_4-N increased during 40 days from the beginning of this experiment in the leached solution, and then NO_3-N increased instead of NH_4-N. Despite of differencies of the irrigation method, the leached amount of phosphorus was very little as compared with the fertilized amount. Leached potassium was increased remarkably with shortening irrigation interval, but the total amount was less than that of nitrogen. In spite of the different irrigation methods, ion balance of cations and anions was constant in the leached solution.

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
ハンドルURL http://mitizane.ll.chiba-u.jp/meta-bin/mt-pdetail.cgi?cd=00026044
ISSN 0069-3227
NCID AN00142658
掲載誌情報 千葉大学園芸学部学術報告 Vol.22 page.33-39 (19750315)
フルテキストへのリンク http://mitizane.ll.chiba-u.jp/metadb/up/AN00142658/KJ00004280577.pdf
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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