Wpływ temperatury gleby na drobnoustroje

• Autorzy: Borowik A. , Wyszkowska J. , Kucharski M.

Warianty tytułu

EN

The effect of soil temperature on the microorganisms

• Języki publikacji: PL

Abstrakty

PL

W pracy określono wpływ temperatury na liczebność drobnoustrojów glebowych. Badania wykonano w doświadczeniu laboratoryjnym na siedmiu utworach glebowych w 5 powtórzeniach. Czynnikami zmiennymi były: 1) rodzaj utworu glebowego: piasek słabogliniasty (1 gleba), piasek gliniasty (2 gleby), glina piaszczysta (3 gleby), pył gliniasty (1 gleba); 2) temperatura inkubacji gleby: 5°C, 10°C, 15°C, 20°C, 25°C; 3) czas inkubacji gleby w tygodniach: 4, 16. Doświadczenie założono w szklanych zlewkach o pojemności 150 cm³, do których odważono po 100 g powietrznie suchej masy gleby (czynnik 1). Następnie doprowadzono wilgotność gleby do poziomu 60% kapilarnej pojemności wodnej. Tak przygotowane zlewki z glebą przykryto folią perforowaną i inkubowano w odpowiedniej temperaturze (czynnik 2). W 4. i 16. tygodniu wykonano analizy mikrobiologiczne, które polegały na oznaczeniu liczebności: bakterii organotroficznych, promieniowców i grzybów oraz określeniu współczynników rozwoju kolonii (CD) i różnorodności ekofizjologicznej (EP). Stwierdzono, że temperatura 15°C była temperaturą optymalną dla rozwoju bakterii organotroficznych, promieniowców i grzybów. Największy wskaźnik rozwoju kolonii (CD) bakterii organotroficznych notowano w glebach inkubowanych w temperaturze 25°C, natomiast promieniowców i grzybów - w temperaturze 15°C. Temperatura inkubacji gleby w niewielkim stopniu zmieniała różnorodność drobnoustrojów.

EN

The aim of study was to determine the effect of temperature on soil microbial counts. Laboratory experiment was conducted in five replications, using seven soil types. The experimental variables were: 1) soil type: slightly loamy sand (1 soil type), loamy sand (2 soil types), sandy loam (3 soil types), silt loam (1 soil type); 2) temperature of soil incubation: 5°C, 10°C, 15°C, 20°C, 25°C; 3) time of soil incubation (weeks): 4, 16. 150 cm³ glass beakers were filled with 100 g samples of air-dried soil (experimental factor 1). Soil moisture was brought to the level of 60% capillary water capacity. The beakers, covered with perforated aluminum foil, were incubated at different temperatures (factor 2). In week 4 and 16, microbiological analyses were carried out to determine the counts of organotrophic bacteria, actinomyces and fungi, and to calculate the values of the colony development (CD) index and the eco-physiological (EP) index. 15°C was the optimum temperature for the growth of organotrophic bacteria, actinomyces and fungi. The highest CD index was noted at 25°C for organotrophic bacteria, and at 15°C for actinomyces and fungi. Incubation temperature had an insignificant effect on soil microbial diversity.

Słowa kluczowe

PL

gleby; temperatura gleb; wlasciwosci fizykochemiczne; wlasciwosci chemiczne; mikroorganizmy glebowe; liczebnosc mikroorganizmow; roznorodnosc gatunkowa; metabolizm mikroorganizmow; aktywnosc mikrobiologiczna

EN

soil; soil temperature; physicochemical property; chemical property; soil microorganism; microorganism number; species diversity; microorganism; metabolism; microbiological activity

• Wydawca: -
• Czasopismo: Zeszyty Problemowe Postępów Nauk Rolniczych
• Rocznik: 2011
• Tom: 567
• Opis fizyczny: s.55-67,rys.,tab.,bibliogr.

Twórcy

autor

Borowik A.

• Katedra Mikrobiologii, Uniwersytet Warmińsko-Mazurski w Olsztynie, pl.Łódzki 3, 10-727 Olsztyn

autor

Wyszkowska J.

• Katedra Mikrobiologii, Uniwersytet Warmińsko-Mazurski w Olsztynie, pl.Łódzki 3, 10-727 Olsztyn

autor

Kucharski M.

• Katedra Mikrobiologii, Uniwersytet Warmińsko-Mazurski w Olsztynie, pl.Łódzki 3, 10-727 Olsztyn

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