Available Phosphate of Arable Lands in Japan. : Changes of Soil Characteristics in Japanese Arable Lands (II)

• Obara Hiroshi

  Natl. Inst. Agro-Environ. Sci.

• Nakai Makoto

  Natl. Inst. Agro-Environ. Sci.

Bibliographic Information

Other Title

• 農耕地土壌の可給態リン酸の全国的変動 : 農耕地土壌の特性変動(II)
• 農耕地土壌の可給態リン酸の全国的変動 農耕地土壌の特性変動(2)
• ノウコウチ ドジョウ ノ カキュウタイ リンサン ノ ゼンコクテキ ヘンドウ ノウコウチ ドジョウ ノ トクセイ ヘンドウ 2

Abstract

Available phosphate is an important indicator of soil fertility. The accumulation of phosphate in cultivated soils had been pointed out before the monitoring survey. On the other hand, discharge of phosphate in crop land soils has been noticed from the view-point of eutrophication of waters. A general monitoring survey of soil properties of arable land was carried out by Ministry of Agriculture and prefectural agricultural experiment stations from 1979 to 1997. In this report, we describe the state of available phosphate and related properties from the monitoring survey data. Available phosphate in the plow layer was clearly increased during the monitoring periods. About the land uses, soils of green house and tea garden showed extremely high contents of available phosphate. Soils of paddy fields and pasture showed lower contents of phosphate and a rather small increase. About the soil groups, Andosols and soil groups that are mainly used for paddy fields show lower contents of available phosphate. The soils that are mainly used for orchard and upland crops showed high contents of phosphate. About the region, the "Seto-naikai" (Inland Sea) region to the central region, where soils derived from coarse textured and acidic rock are widely distributed, showed high contents of phosphate. Changes in the phosphate of surface soils showed a clear increase from the first-round to the third-round survey in most land uses, soil groups and regions. But from the third-round to the fourth-round surveys, some groups, especially in paddy fields, showed a decrease or almost equal level of contents of phosphate.

Journal

• Japanese Journal of Soil Science and Plant Nutrition

  Japanese Journal of Soil Science and Plant Nutrition 75 (1), 59-67, 2004

  Japanese Society of Soil Science and Plant Nutrition

Keywords

• available phosphate
• Japanese arable lands
• soil monitoring

Details

• CRID: 1390282681534334336
• NII Article ID: 110001755202
• NII Book ID: AN00195767
• DOI: 10.20710/dojo.75.1_59
• ISSN: 24240583
• ISSN: 00290610
• NDL BIB ID: 6848206
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010690140
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6848206
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • Crossref
• Abstract License Flag: Disallowed