搜索结果: 1-4 共查到“农学总论 structural properties”相关记录4条 . 查询时间(0.062 秒)
Effects of land use on some structural properties of an Ultisol in south-eastern Nigeria
structure sustainability porosity aggregate stability soil conservation
2008/11/24
0.25 mm, volumetric moisture content at field capacity (FC) and organic matter content. Structural properties which are affected by land use are total porosity, bulk density, and organic matter.
...
Influence of humic acid on the structural properties of kaolin mercury porosimetry studies
clay mineral kaolin humic acid mercury porosimetry technique structure
2008/11/24
The influence of the coverage of the kaolin surface with humic acid on its structural properties has been investigated. Humic acid (HA) was extracted with water from Ah horizon of an acid forest soil....
Effect of management of a volcanic ash soil on structural properties
soil management structural properties volcanic ash soi
2008/11/21
In Hapludand, Southern Chile with different types of land use and differentiated time periods after clear-cutting of the native forest by fire, the following parameters: pore size distribution, beari...
Field scale heterogeneity of soil structural properties in a moraine landscape of north-eastern germany
spatial variability soil structure soil physical properties
2008/11/21
abstract200 |im were determined for samples taken from the topsoil layer (15 cm average soil depth), a layer compacted by wheel traffic (30 cm) and the subsoil (55 cm). For macropore determinations po...