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对密度为 2 2 5株 /hm2 ,375株 /hm2 ,6 0 0株 /hm2 的 3种近熟杉木林套种毛竹、裸地种竹和原近熟杉木林 (现杉木已采伐 )套种毛竹等 5种林分的成活率、新竹及竹鞭生长指标分析研究表明 :各种经营模式中 ,杉木近熟林套种有利于提高毛竹成活率及长竹率 ,但发笋长竹数以裸地种竹为最多 ;新竹的生长以原近熟杉木林套种毛竹的林分为最好 ,其次是杉木密度为 2 2 5株 /hm2 ,375株 /hm2 的近熟杉木林、裸地种竹和杉木密度为 6 0 0株 /hm2 的林分 ;单根竹鞭长和鞭节长有随林分郁闭度增大而增加的趋势 ,而总鞭长、竹鞭数及竹鞭断梢率则相反 ;鞭深的分布变化不很明显 ,但有随林分密度增大而变浅的趋势 ;从更新杉木林分看 ,近熟杉木林套种毛竹以杉木密度为 2 2 5株 /hm2 的较理想
Three species of near-mature Chinese fir (Phyllostachys pubescens) were planted in a density of 225 plants / hm2, 375 plants / hm2 and 600 plants / hm2. The survival rate of 5 kinds of forest stands, the analysis of the growth index of Hsinchu and Rhizome showed that the intercropping of Cunninghamia lanceolata forest was beneficial to improve the survival rate of bamboo and the rate of long bamboo in various management modes. However, Bamboo was the most. The growth of Hsinchu was the best with the intercropping of the mature Cunninghamia lanceolata plantation with Phyllostachys heterocycla cv. Pubescens, followed by the mature Cunninghamia lanceolata forest with density of 225 plants / hm2 and 375 plants / hm2, With a density of 600 trees / hm2 stand; single bamboo whip length and whip length with forest canopy density increases and the tendency of the total whip length, bamboo whip number and bamboo whip breakage rate On the contrary, the distribution of whip depth is not obvious, but it tends to become lighter with the increasing of the stand density. From the perspective of the regeneration of Chinese fir, the density of Chinese fir is 2255 plants / hm2 ideal