The Relation Between Water Retentivity and Fine Pore Property of Soil

Research Project

Project/Area Number	63560234
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	農業土木
Research Institution	Tokyo University of Agriculture
Principal Investigator	TAKAHASHI Satoru Tokyo University of Agriculture Agriculture Lecturer, 農学部, 講師 (40120133)
Project Period (FY)	1988 – 1989
Project Status	Completed (Fiscal Year 1989)
Budget Amount *help	¥2,400,000 (Direct Cost: ¥2,400,000) Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000) Fiscal Year 1988: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords	Fine Pore / Water Retentivity / Soil Texture / Organic Mater Content / Origin of Soil / Total fine Pore Content / Water Constants / Organic Soil / 細孔量 / 土壌構造 / 火山灰土壌 / 非火山灰土壌
Research Abstract	Specific surface of soil and fine pore property of soil are important factor to the water retentivity of soil. In this time, I have investigated the relation between fine pore property of soil and water retentivity. The result were as follows 1. Quantity and quality of fine pore are affected by the soil texture, organic matter content and origin of soil. 2. The moisture volume percentage in each water constants has a high positive relativity to total fine pore content. 3. I have shown that the moisture volume percentage for certain pF-values <3.0 can be estimated from the value of total fine pore content of soil.