In this study, we investigated the most suitable extensive cultivation management cycle for conserving floral diversity in a fallow paddy field. The following three studies were made for this purpose: (1) review of the examples of paddy restoration (2) vegetation survey of fallow paddy fields and (3)rhizome study of Phragmites australis. The paddy restoration works involve those aboveground and underground i.e. mowing and plowing. The following two types of plants were found to interfere with mowing: tall-stem plants (e.g. Phragmites australis and Miscanthus sacchariflorus) and rhizome and erect-stem plants (e.g. Isachne globosa and Leersia sayanuka). These plants increased greatly during the second year in fallow. In plowing, plants with strong and long rhizome (e.g. P. australis and M. sacchariflorus) were found to interfere. The weight of their rhizome increased greatly during the forth year in fallow. Plowing is four-times laborious compared to mowing in restoration work. Therefore it is suggested that cultivation of once every four years is effective in restoration from the labor point of view.
雑誌名
ランドスケープ研究
巻
65
号
4
ページ
290 - 293
発行年
2002
ISSN
13408984
書誌レコードID
AN10455955
日本十進分類法
629
290.13
出版者
日本造園学会
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多摩丘陵の湿性休耕田における農的粗放管理について
land65_4.pdf
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