File:37. Определување на содржина на влага во почва.ogg
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English: Soil water content
Procedures: 1. Two aluminium containers (of determined weight) are filled with fresh soil. The containers are weighed again and their mass is noted. The containers are then to be dryed at 105 degrees centigrade for 24 hours. 2. After the initial drying process, the soils must stabilize in a desiccator while cooling, before being measured once more. 3. The gravimetric water content of the soil is extrapolated from the mass of the containers, the mass of fresh soil and the mass of dried soil. RESULTS: Soil water content is usually expressed as gravimetric water content; Ɵg, which as the term suggests, represents how many grams of water are present in a gram of soil based on the weight of a gram of dry soil. Planned and performed by Sofija Kostandinovska, Institute of Biology, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.Македонски: Определување на содржина на влага во почва
Постапки: 1. Се полнат по два алуминиумски садови (се забележува тежината на садовите) со свежа влажна почва. Се мерат садовите повторно и се забележува тежината на влажната почва и садот. Почвата и садовите се сушат во печка најмалку 24 часа/105 °С. 2. Садовите се вадат од печката, се ладат во ексикатор и се мерат. Се забележува тежината на сувата почва и садот. 3. Се пресметува гравиметриската содржина на влага за секој примерок почва. РЕЗУЛТАТ: Содржината на влага во почва обично се претставува како гравиметриска содржина на влага, Ɵg, која, како што кажува името, претставува количина вода на единица маса на сушена почва во печка. Осмислено и изведено од Софија Костандиновска, Институт за биологија, ПМФ, УКИМ, Скопје. |
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| Source | Own work |
| Author | Deni Ingilizovski |
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This biology experiment video was made within the Wikiexperiments 2022 set up by Shared Knowledge.
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| current | 19:13, 9 October 2022 | 2 min 2 s, 1,920 × 1,080 (87.17 MB) | Dandarmkd (talk | contribs) | Uploaded own work with UploadWizard |
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