Macro element content in fertilized forest soils in spruce (Picea Abies (L.) H. Karst.) stands in Latvia | Makroelementu saturs mēslotā egļu (Picea abies (L.) H. Karst.) audzes augsnē Latvijā
2012
Ermane, E., University of Latvia, Riga (Latvia). Dept. of Analytical Chemistry | Bardule, A., Latvian State Forest Research Inst. Silava, Salaspils (Latvia) | Balcerbule, Z., University of Latvia, Riga (Latvia). Dept. of Analytical Chemistry | Gigele, R., University of Latvia, Riga (Latvia). Dept. of Analytical Chemistry
anglais. The present paper provides an overview of analysis conducted with soil samples from depths up to 80 cm, obtained in the Klive area from a spruce stand owned by JSC “Latvijas Valsts meži”. Also test fertilization attempts were made with the use of ash- and potassium-based artificial fertilizers (K2SO4). The content of macro elements (K, Ca, N, and C) was determined in the soil samples in the course of the analysis. The obtained results indicate that the content of K and Ca decreases at greater horizontal depths of the soil. Nutrients are subsequently being leached away from the soil. A higher C/N ratio at the horizontal depth of up to 10 cm in the soil means a higher content of organic substances in the aforementionned depth of the soil. The stability of nutrients in this horizon is higher.
Afficher plus [+] Moins [-]letton. Darbā analizēti augsnes paraugi (augsnes horizonta dziļumā līdz 80 cm), kas iegūti no AS “Latvijas Valsts meži” Zemgales mežsaimniecības Klīves iecirkņa egļu audzes. Egļu audzē izmēģināti mēslojumi – pelni un kāliju saturoši minerālmēsli (K2SO4). Meža augsnes paraugos noteikts makroelementu (K, Ca, N, C) saturs. Iegūtie rezultāti liecina, ka K un Ca saturs palielinās visos augsnes horizonta dziļumos. Taču notiek arī barības elementu izskalošanās no augsnes. Augstāka C/N attiecība augsnes horizonta dziļumā līdz 10 cm liecina par augstāku organisko vielu saturu šajā augsnes slānī.
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