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[Текст] / J. Stockfors, S. Linder, A. Aronsson ; Swedish University of Agricultural Sciences Faculty of Forestry. - Uppsal : Swedish University of Agricultural Sciences Faculty of Forestry, 1997. - 15 с. : ill. - (Studia Forestalia Suecica, ISSN 0039-3150 ; 202). - Библиогр: p. 13-15%ISBN 91-576-5399-2. - 2-00 р.

УДК

06

Аннотация: Effects of fertilisation treatments (amounts and composition) on needle concentrations of micronutrients (boron, copper, iron, manganese and zinc), were studied in a long-term fertilisation experiment with young Norway spruce in Central Sweden. Stored current-year's needles (1967-1989), and material from a biomass sampling in 1989, were used to determine changes in micronutrient status with stand development, and to estimate total amounts of micronutrients, in all aboveground organs for a wide range of nutrient regimes and stand productivities. Fertilisation resulted in a wide range of growth rates: the most optimal treatments grew more than three times as fast as the control stands.


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Aronsson, A.; Linder, S.
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[Text] = Effect of fertilization on the nutrient status and growth of Scots pine on drained peatlands in northern Ostrobothnia and Kainuu : научное издание / M. Moilanen. - Helsinki : Metsantutkimuslaitos, 1993. - 36 с. : рис., табл. - (Folia Forestalia ; № 820). - fin. - Библиогр.: с. 27-29. - ISSN 0015-5543. - ISBN 951-40-1341-7 : 800.00 р.

УДК

06

Аннотация: The effect of single and repeated fertilization on the nutrient status and stemwood growth of Scots pine on drained peatlands was investigated in the study. The magnitude of the growth increment obtained with single fertilization depended on the nitrogen content of the substrate. On nitrogen-poor peatlands (N content of the surface peat below 1.75 %) P- fertilization increased the volume growth of pine during the 7-year period by only 0.2-0.3 m3/ha/a. The effect of NPK was at its greatest 3-5 years after fertilization, and gave a measurable stand growth increase for about 10 years. The effect of fertilization was reflected in the needles as slightly elevated P and K concentrations.

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