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Wyszukujesz frazę "bobr" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Physical properties of the soil formed as a result of recultivation of sand-pits in the Bobr River valley
Autorzy:
Greinert, H
Drab, M.
Powiązania:
https://bibliotekanauki.pl/articles/1401929.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
gravel exploitation
sand exploitation
soil formation
Bobr River
recultivation
physical property
soil
sandpit
alluvial soil
Opis:
Quite large areas of the alluvial soils in the valley of the river Bobr were destructed by the sand and gravel exploitation. After the recultivation measures, which consisted of backfilling of the open-castwith waste aggregate, levelling the surface and putting on such prepared surface 50-200 cm of the stripping material,the yield was very low.The field and laboratory experiments have shown that during the technical operations the soil was compacted to such degree, that the root growth and water permeability was restricted to large extent.The soil compaction was noted in the whole soil profile.The evidences of this process were the high bulk density( often over 1,8 Mg m-3), very low water permeability values and low air capacity. The situation during the 12 years from the finishing of the recultivation has not changed.
Źródło:
Acta Agrophysica; 2000, 35
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The pH changes of the soils formed as a result of reclamation of the sand-pits
Autorzy:
Drab, M
Greinert, H.
Powiązania:
https://bibliotekanauki.pl/articles/1450179.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
Bobr River
agricultural reclamation
pH change
soil
soil acidification
soil property
sandpit
degraded ecosystem
recultivated soil
reclamation
anthropogenic ecosystem
alluvial soil
Opis:
The alluvial soils in the Bóbr river valley, devastated by sand and gravel exploitation, were reclaimed for agricultural use. After reclamation treatment, the newly formed soil was very acid. Application of 5 Mg/ha lime elevated soil pH to 6-7, but during the following years, soil pH dropped again by about one half of the pH unit a year. Rapid drop in the pH level can result both from geological and soil-forming processes. Efficiency of mineral fertilizers applied in various combinations did not give the expected results and the yield of cultivated plants was not satisfactory. Mineral fertilization in various combinations did not result in the expected yield levels.
Źródło:
Acta Agrophysica; 2001, 51; 37-43
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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