@article{oai:sucra.repo.nii.ac.jp:00016712,
 author = {川本, 健 and 中村, 寿人},
 journal = {埼玉大学地域共同研究センター紀要, Report of Cooperative Research Center, Saitama Univerity},
 month = {},
 note = {We investigated the degree of soil water repellency (WR) in aggregated volcanic ash soils associated with organic matter content and initial water contend. A series of tests of WR, namely, Water Drop Penetration Time (WDPT) test, Ninety Degree Surface Tension (NDST) test, and capillary rise t~st were applied. Results show that the degree ofWR varied greatly with both organic matter content and initial water content, and that three distinct WR areas of 'Extremely WR area,' 'Transitional area,' and 'Wettable area' were recognized in the scatter diagram obtained from WDPT test. In three WR tests, initial water content values that yield the highest degree of WR were found to be identically between WDPT and capillary rise tests, and the value obtained from NDST test was deviated from former two tests. The degree of WR in aggregated soil was closely associated with a soil structure and morphological features
of water retention in aggregates. The degree of WR was enhanced mostly at the water content corresponding to a moisture condition at which water in intraaggregate pores was drained to a moderate extent., text, application/pdf},
 pages = {93--100},
 title = {団粒構造の発達した火山灰土壌の撥水性発現機構の解明},
 volume = {4},
 year = {2004}
}