不同岩性上马尾松、杉木生长的比较

采用实验生态学的方法,并通过方差分析,对6类不同岩性发育的土体上11年生马尾松、杉木生长和生物量研究,以揭示岩性-土壤与马尾松、杉木生产力的关系,为系统培育马尾松、杉木速生丰产林奠定基础。研究结果表明:6类不同岩性发育的土体对马尾松、杉木的高、胸径生长及单株生物量效应影响不同,但有类似的变化规律,即高生长和单株生物量均为长石石英砂岩>玄武岩>石英砂岩>变余砂岩>第四纪红色黏土>煤系硅质砂页岩,胸径生长为长石石英砂岩>玄武岩>石英砂岩>变余砂岩>煤系硅质砂页岩>第四纪红色黏土,马尾松的生长略好于杉木;马尾松、杉木各自的高生长、胸径生长以及去皮干、干皮、叶、根、和全株的生物量差异极显著(P<0.01),带皮枝的生物量差异显著(P<0.05),而在两树种之间则均差异不显著。

Comparation of growth of masson pine and Chinese fir in different lithological characters

Methods of experimental ecology and variance analysis were adopted to study the biomass and growth of planting eleven years' masson pine and Chinese fir on the soils from six lithological characters in order to reveal relationship of lithological character,soil and productivity of masson pine and Chinese fir,and to lay a foundation of systemic management for fast-growth and high yield of masson pine and Chinese fir.The main results were as follows: The soil effects from six lithological characters on height,diameter at breast height(DBH) growth and individual biomass of masson pine and Chinese fir were different,but had similar change rules.The height and individual biomss were feldspathic quartzy sandstone>basalt>quartzy sandstone>blastopsammite>quarternary period red clay>coal-series siliceous sand-shale.The DBH was feldspathic quartzy sandstone>basalt>quartzy sandstone>blastopsammite>coal-series siliceous sand-shale>quarternary period red clay.Masson pine growth was better than Chinese fir growth.The respective height growth,DBH growth and biomass of flaying trunk,husk of trunk,leaf,root,plant of masson pine and Chinese fir had significant differences(P<0.01).Biomass of branch had significant differences(P<0.05).But masson pine and Chinese fir had no significant differences.