杉木毛竹混交造林效果研究

通过研究杉竹同时造林、杉木幼龄林、中龄林、近熟林套种毛竹和裸地种竹五种林分生长状况，结果表明：各林分成活率以杉木中龄林套种毛竹的为最高，杉木与毛竹同时要以及裸地种竹的为最低，有随移栽母竹时林地郁闭度的增大而增大的趋势；长竹率最高的是幼龄林种竹，为６０．５％，最低的为中龄林种竹，中有４７．６％；各年度发笋长成新竹数艰裸地种竹为最多，３年共长２７５７５株／ｈｍ＾２新竹，其次排序为竹杉同时造林的林分、幼

A Study on Phyllostachys heterocycla cv. pubescens Cultivated Under Different-age Forestes of Chinese Fir

This paper deals with growing condition of five types of bamboo forests, including bamboo cultivated under three different-age forests of Chinese fir, cultivated on bare land and bamboo cultivated simutaneously with Chinese fir. The results showed that the survival rate tended to increase with the canopy density; the growing rate of the bamboo cultivated in young Chinese fir was the highest, making 60.5 percentage, the lowest rate that of the bamboo cultivated under middle-aged Chinese fir, only making 47.6 percentage; the number order of growing bamboo were the bamboo cultivated on bare land, the bamboo cultivated simutaneously with Chinese fir, bamboo cultivated in young Chinese fir forest, the bamboo cultivated in midde-aged Chinese fir forest and bamboo cultivated in nearly ripe Chinese fir forest; the best indices of the forest were those of the bamboo cultivated in young Chinese fir forest, the next were those of the bamboo cultivated under neary ripe Chinese fir forest, bamboo cultivated on bare land, the worst indices were those of the bamboo cultivated under middle-aged Chinese fir forest; the length of rhizome tended to increase with the canopy density, but the total length of rhizome, number of rhizome and the rate of the broken tips of the rhizome were negatively related with it, the biggest diameter of the rhizome was in the forest of bamboo cultivated in young Chinese fir forest, the next was in the forest of bamboo cultivated simutaneously with Chinese fir forest, the smallest was the forest of bamboo cultivated in middle-aged Chinese fir forest.