부산대학교 도서관

Vegetation units of transitional peatlands are described. Basic draining, and fertilization with urea and NPK increased the total mushroom yield to over 500 kg/ha. The Lactarius rufus yield was over 85 % of the total dry weight and it was more than 20 times the yield of a virgin dwarf-shrub pine bog. Paxillus involutus benefitted from the same fertilizers. The fruit bodies of the saprophytic fungi formed only 1.4 % of the dry weight of the total yield, but quantitatively they formed 34.7 % of all fruit bodies collected. Omphalina ericetorum, the algae and fungus partners in association, appeared to benefit from urea and NPK-fertilizers for a short time. In all, 107 species of fungi were found in 1975—1976 on drained, fertilized and virgin peatlands in Central Finland.