ダウンロード数 : ?
言語
英語
著者
KAMIDOHZONO, Akira Project Rice-based Agriculture Development in Afghanistan
NEZAM, Abdul Waris Sheshambagh Agricultural Experiment Station
SADAT, Sayed Azmar Sheshambagh Agricultural Experiment Station
内容記述(抄録等)
Paddy soil properties in 20 villages in Nangarhar province, East Afghanistan were investigated. The soils, which were mostly classified as sandy loam or loam, were alkaline and contained carbonate ranging from 4.9 to 16.9 g C kg–1. The average total N and organic C, (0.36 N and 6.2 C g kg–1) was low compared to the average values in tropical Asian paddy soils. Calcium was the predominant exchangeable cation followed by Mg, K and Na in that order. The available P (Olsen-P) content was 20.7 mg P2O5 kg–1 on average and did not vary significantly throughout the study area, while the available Si content, (261 mg SiO2 kg–1) was comparable with the level in tropical Asia. The available micronutrients (DTPA-TEA extraction) Fe, Mn, Cu and Zn, were 35.9, 9.6, 4.75 and 0.33 mg kg–1 on average. The paddy soil properties were generally low in fertility compared to those in tropical Asia, while the available P and Zn contents were deficient for rice growth. Paddy fields in Nagarhar province could be divided into groups according to the location. The paddy soil properties varied in Kabul and Kunar watersheds and were influenced by spot distribution of different types of parent materials such as limestone, dolomite and lava.
主題
available Zn
micronutrients
掲載誌名
Japan Agricultural Research Quarterly: JARQ
48
3
開始ページ
299
終了ページ
306
ISSN
0021-3551
ISSN(Online)
2185-8896
発行日
2014-07-01
DOI
出版者
JARQ編集委員会
出版者ヨミ
JARQ ヘンシュウ イインカイ
出版者別表記
Japan International Research Center for Agricultural Sciences
資料タイプ
学術雑誌論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e26112
部局
生物資源科学部
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