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タイトルヨミ
リツジュ ノ コングン ブンプ ト ヨウブン キュウシュウ リョウ ニツイテ
日本語以外のタイトル
Distribution of Root System of a Chestnut Tree and Amounts of Manure Elements Absorbed by the Tree
ファイル
言語
日本語
著者
高馬 進
松岡 広
篠原 玄三
内容記述(抄録等)
In order to estimate the amounts of the manure elements absorbed by chestnut trees, all parts of a 8 years old tree in the orchard of Shimane Agricultural college were separated, weighed and analysed. The root system was separated by the brock method-depth 30, 60, 100cm and radius 1,2m. New and old tissues of trunk, branches and roots were divided.
i) The dry matter weights of these parts of the tree were as follows;
Leaves 6.39kg, fruits 2.64kg, burs 2.10kg, one year old branches 1.25kg, larger branches and trunk 22.80kg, fine roots 3.70kg, other roots 15.61kg and total 54.49kg. All the new tissues formed in the current year amounted to 26.22kg.ii) 98% of all roots were found within 60 cm from the soil surface and roots elongated horizontally above 2m were recognized more than 10%.
iii) The amount of these new tissues was about 48.1% of total weight of the tree and sum of leaves, fruits, one year old branches and fine roots was about 61.3% of total new tissues.
iv) The analytical data of each part showed that N content in leaves and fruits, P_2O_5 content in fine roots and burs, K_2O content in leaves, burs and fruits, CaO content in leaves, one year old branches and other branches and MgO content in leaves, one year old branches and fine roots were higher than that of the other parts.
v) Total amounts of manure elements contained in this tree were 361.9g of N, 148.5g of P_2O_5, 181.7g of K_2O, 431.5g of CaO and 114.6g of MgO and amounts of these elements in the new tissues were 232.0g of N, 87.9g of P_2O_5, 129.1g of K_2O, 221.0g of CaO and 64.4g of MgO. Sum of these elements in fruits, leaves, one year old branches and fine roots was N 78%, P_2O_5 73%, K_2O 85%, CaO 64% and MgO 71% of each total amount of these elements in the new tissues.
vi) From these data, amounts per 10a of the manure elements absorbed by chestnut trees were 7.66kg of N, 2.90kg of P_2O_5, 4.26kg of K_2O, 7.29kg of CaO and 2.12kg of MgO based on those trees were planted at the rate of 33 trees per 10a and produced 220kg fruits.
掲載誌名
島根農科大学研究報告
9
開始ページ
(A-1)27-32
ISSN
05598311
発行日
1961-03-31
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
開学十周年記念号(Commemoration Number for the 10th Anniversary)
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