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PL
Celem pracy była ocena wpływu właściwości środowiska glebowego na występowanie osobników obuwika pospolitego. Obszar badań podzielono na 3 powierzchnie badawcze, po 700 m2 każda, różniące się liczbą roślin. Na powierzchni I stwierdzono obecność 123, na powierzchni II – 28, a na powierzchni III – nie stwierdzono obecności osobników obuwi-ka pospolitego. Z wyróżnionych powierzchni badawczych pobrano próby glebowe i oznaczono w nich skład granulometryczny, wybrane parametry chemiczne (pH, zawartość CaCO3 i Corg., zawartość form przyswajalnych P, K, Mg, Mn, Cu, Zn i Fe) oraz aktywność dehydrogenaz i fosfataz. Z przeprowadzonych badań wynika, że liczba roślin obuwika pospolitego była istotnie dodatnio skorelowana z zawartością form przyswajalnych P i K oraz ujemnie z zawartością węgla organicznego i aktywnością dehydrogenaz.
EN
The aim of the study was to evaluate the influence of soil environment on lady's slipper orchid (Cypripedium calceolus) specimen appearance. The study field was divided into 3 research areas that had different numbers of plants. 123 specimens of Cypripedium calculus were found in the first area, 28 in the second, and none in the third. Soil samples were taken from the research areas and particle size distribution, selected chemical properties (pH, CaCO3 content and Corg., content of available forms of P, K, Mg, Mn, Cu, Zn and Fe) and the dehydrogenaze and phosphatase activities were assayed. The result of the study shows that the numbers of Cypripedi-um calculus depended on the soil properties. The specimen number was negatively correlated with Corg. content and the dehydrogenase activity and positively correlated with the content of available forms of P and K.
EN
In a field experiment conducted on leached brown soil in Malice, near Zamość (southeastern Poland) in 2007-08, the effect of soil tillage and nitrogen fertilization on microbiological parameters of the soil under spring Triticale cultivation was investigated. Soil tillage – conventional and simplified with double or single cultivation – was combined with different variants of nitrogen fertilization – 60, 90, and 120 kg N·ha⁻¹. The soil was sampled three times – I - end of tillering stage (BBCH 29), II - end of heading stage (BBCH 59) and III – late milk stage (BBCH 77) – and its microbiological properties were determined. Generally, the simplified soil tillage and nitrogen fertilization up to 90 kg N·ha⁻¹ favors bacteria, Actinomycetes, and fungi content, as well as dehydrogenase activity. The conventional soil tillage and nitrogen fertilization at a level of 120 kg·ha⁻¹ reduced the number of microflora. The highest numbers of micro-organisms in the soil were noted at the stage (BBCH 59) of the spring Triticale, but dehydrogenase activity was highest at that stage (BBCH 29). In formulating the biological index of soil fertility (BISF), the biological activity of the soil (M), organic carbon content (H) and soil absorbing capacity (T) were taken into account. Biological activity of the soil (M) was expressed as numbers of micro-organisms, or as dehydrogenase activity. The BISF, calculated based on dehydrogenase activity, is significantly dependent on the all factors investigated. However, BISF calculated as the sum of the numbers of bacteria and Actinomycetes in relation to fungi (B+A/F) was positively correlated with grain yield. Grain yield was highest following conventional soil tillage and nitrogen fertilization at a level of 60 kg N·ha⁻¹.
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