林木施肥に関する研究 (第XII報) : 施肥時期別試験

Abstract

With a view to finding out the best season or method of fertilizing on young trees at forest nurseries or planted forest stands, we made some experiments on several species and with many fertilizers. Thease experiments were carried out at the nursery of the SHIRAHAMA experimental stand of KYOTO UNIVERSITY. The season and kinds of feritilizers used are shown in the Table 2, 4, 6, 8, 10, 12, and 14. Clasification of experimental methods.〔A〕The total amount of the fertilizer applied as the initial-manuring before planting the seedlings.〔B〕A part of the fertilizer applied as the initial-manuring and the remaining fertilizer applied after planting the seedlings.〔C〕without initial-fertilizer, and the fertilizer is given one, two, or three times as aftermanuring. The amount of fertilizer and the season of manuring changed according to the kind of fertilizer and tree species.